Dr. Wang Bo

WANG Bo

Research Fellow

Office:

NUS Environmental Research Institute,

1 CREATE Way, #15-02 CREATE Tower,

Singapore, 138602

Phone: (65)91400062

Email: bo.wang@nus.edu.sg

ORCID: https://orcid.org/0000-0001-8087-918X

 

Education Background

Ph.D. (under review), Solar Thermal Technology, The Australian National University, 2015–2021.

M.Sc., Erasmus Mundus Joint Program in Energy Engineering, Eindhoven University of Technology (TUE), Netherlands & Royal Institute of Technology (KTH), Sweden, 2012–2015.

B.Eng., Energy and Environment System Engineering, Zhejiang University, China, 2008–2012.

 

Research Interests

High-temperature solar thermochemical technology

Energy storage and CO2 capture based on solar-driven chemical looping

Multiphase solar reactor design and modelling

 

Research Highlight

Design and optimization of a high-temperature packed-bed solar thermochemical reactor for solar energy storage

An indirectly irradiated solar thermochemical packed-bed reactor has been designed to achieve the endothermic reduction step of a two-step metal oxide-based chemical looping, which is a promising pathway for solar energy storage and water splitting. The novel reactive medium consists of binary Fe/Mn oxide particles was tested in the reactor under concentrated solar irradiation generated by a high-flux solar simulator. Leveraging commercial software and in-house developed programs, a numerical model was developed to simulate the chemically reactive and radiatively participative gas–solid flow for performance evaluation and operation optimization of the reactor. The solar-to-chemical efficiency reached 11.4% in the optimal case.

Schematic of the experiment set-up of a high-temperature packed-bed solar thermochemical reactor.

 

Publication list

  1. Wang, L. Li, F. Schaefer, J.J. Pottas, A. Kumar, V.M. Wheeler, W. Lipiński, Thermal reduction of iron–manganese oxide particles in a high-temperature packed-bed solar thermochemical reactor, Chemical Engineering Journal 412 (2021) 128255.
  2. Yang, L. Li, B. Wang, S. Li, J. Wang, P. Lund, W. Lipiński, Thermodynamic analysis of a novel solar thermochemical system with a rotating tower reflector and a fixed-bed receiver–reactor array, Frontiers in Energy Research 9 (2021) 253.
  3. Wang, L. Li, J.J. Pottas, R. Bader, P.B. Kreider, V.M. Wheeler, W. Lipiński, Journal of Solar Energy Engineering 142 (5) (2020).
  4. Li, B. Wang, J. Pye, R. Bader, W. Wang, W. Lipiński, Optical analysis of a multi-aperture solar central receiver system for high-temperature concentrating solar applications, Optics Express 28 (25) (2020) 37654-37668.
  5. Lipiński, E. Abbasi-Shavazi, J. Chen, J. Coventry, M. Hangi, S. Iyer, A. Kumar, L. Li, S. Li, J. Pye, J.F. Torres, B. Wang, Ye.Wang, V.M. Wheeler, Progress in heat transfer research for high-temperature solar thermal applications, Applied Thermal Engineering (2020) 116137.
  6. Li, B. Wang, J. Pye, W. Lipiński, Temperature-based optical design, optimization and economics of solar polar-field central receiver systems with an optional compound parabolic concentrator, Solar Energy 206 (2020) 1018-1032.
  7. Li, S. Yang, B. Wang, J. Pye, W. Lipiński, Optical analysis of a solar thermochemical system with a rotating tower reflector and a receiver–reactor array, Optics Express 28 (13) (2020) 19429-19445.
  8. Li, B. Wang, R. Bader, J. Zapata, W. Lipiński, Reflective optics for redirecting convergent radiative beams in concentrating solar applications, Solar Energy 191(2019) 707-718.
  9. Li, B. Wang, J. Pottas, W. Lipiński, Design of a compound parabolic concentrator for a multi-source high-flux solar simulator, Solar Energy 183 (2020) 805-811.
  10. Wang, B. Wang, L. Li, B. Laumert, T. Strand, The effect of the cooling nozzle arrangement to the thermal performance of a solar impinging receiver, Solar Energy 131, 222-234.

 

 

Liu Ming

Liu Ming  

Personal Particulars
Doctoral candidate
Department of Chemical and Biomolecular Engineering

National University of Singapore,

4 Engineering Drive 4, Singapore 117576

Office: E5 01-01-04
Phone: (65) 94467741
Email: lm@mail.ecust.edu.cn

 

Education

Ph.D, Thermal Engineering, East China University of Science and Technology, China, 2016-2021.

B.Eng., Energy and Power Engineering, East China University of Science and Technology, China, 2012-2016.

Research Interests

Gas-solid flow;

Gasification\ combustion;

Research highlights

Ø  To raise diffusion questions in present gasification/combustion reaction kinetics measurements. A novel experimental method is applied to compare the diffusion and reaction characteristics in different particle swarms and TGA experiments. It is revealed that the diffusion conditions and temperature effects should be reconsidered in previous kinetics measurements of coal and petcoke gasification and combustion reactions. (Fuel 2019, 241: 973-984; AIChE J 2018, 64 (11): 4009-4018; Energy & Fuels 2019, 33 (4): 3057-3067.)

Ø  To raise a reaction mode of high ash content coal char gasification regarding to the residual carbon in slag. The novel reaction mode indicated that the increase of reaction temperature not only increase the reaction rate but also decrease the residual carbon in molten slag. (Energy & Fuels 2018, 32 (11): 11335-11343; Energy Fuel 2018, 32 (2): 1550-1557)
Ø  Investigation of the reaction kinetics of single petcoke particle at high temperatures. It is revealed that the reaction rate increased with the conversion. The pore development demonstrated the increase of surface area. What’s more, the pore development is related to the non-uniform distribution of reactive sites and the high graphitization of carbon. Reaction mode of single petcoke particle is developed.(in press, Chinese J. Chem. Eng. DOI: 10.1016/j.cjche.2019.02.025.)

Ø  Particle fluctuating motions induced by chemical reactions. A novel particle fluctuating motions induced by chemical reaction are investigated. The fluctuating velocity of particles increased with the combustion temperature. It is revealed that the irregular micro-structure of particles and nonuniform distribution of active sites on particle surface account for the particle fluctuations.

Publications

  1. M. Liu, F. Li, H. Liu, C.H. Wang, “Synergistic effect on co-gasification of chicken manure and petroleum coke: an investigation of sustainable waste management”, Chem. Eng. Journal, 128008 (2020).
  2. Arora, J. Jung, M. Liu, X. Li, A. Goel, J. Chen, S. Song, C. Anderson, D. Chen, K. Leong, S. H. Lim, S. L. Fong, S. Ghosh, A. Lin, H.W. Kua, H.T.W. Tan, Y. Dai, C.H. Wang, “Gasification biochar from horticultural waste: An exemplar of the circular economy in Singapore”, Science of the Total Environment 781, 146573 (2021).

Chen Jialing

Chen Jialing  

Personal Particulars
PhD Student
Department of Chemical & Biomolecular,

National University of Singapore, 4 Engineering Drive 4,

Singapore, 117576

Office: #15-02 CREATE Tower
Phone: (65) 84272236
Email: E0427817@u.nus.edu

 

Education

B.Eng., Thermal Energy and Power Engineering, Shanghai Jiao Tong University, China, 2012-2016.

 

Research Interests

  • Food waste gasification
  • CCHP systems

 Journal Publications

  • J. Chen, X. Li, Y. Dai, C.H. Wang, “Energetic, economic, and environmental assessment of a Stirling engine based gasification CCHP system”, Applied Energy, 281, 116067 (2021).
  • X.Y. Sun, J.L. Chen, Y. Zhao, X. Li, T.S. Ge, C.H. Wang, Y.J. Dai, “Experimental investigation on a dehumidification unit with heat recovery using desiccant coated heat exchanger in waste to energy system”, Applied Thermal Engineering, 185, 116342 (2021).
  • Arora, J. Jung, M. Liu, X. Li, A. Goel, J. Chen, S. Song, C. Anderson, D. Chen, K. Leong, S. H. Lim, S. L. Fong, S. Ghosh, A. Lin, H.W. Kua, H.T.W. Tan, Y. Dai, C.H. Wang, “Gasification biochar from horticultural waste: An exemplar of the circular economy in Singapore”, Science of the Total Environment 781, 146573 (2021).
  • Li, J. Chen, X. Sun, Y. Zhao, C. Chong, Y. Dai, C.H. Wang, “Multi-criteria decision making of biomass gasification-based cogeneration systems with heat storage and solid dehumidification of desiccant coated heat exchangers”, Energy 233, 121122 (2021).

Conference Publications/ Presentations

  • Jialing Chen, Xian Li, Yanjun Dai, Chi-Hwa Wang. Theoretical Analysis of Energy Recovery from Food Waste Based on an Integrated Gasification and Stirling Engine System. 18th International Conference on Sustainable Energy Technologies, Kuala Lumpur, Malaysia, 20-22 August 2018.

Vishnu Sunil

Vishnu Sunil  

Personal Particulars
PhD student
Department of Chemical and Biomolecular Engineering,

National University of Singapore, 4 Engineering Drive 4,

Singapore, 117576

Office: WS2-06-17
Phone: (65) 91678814
Email: Vishnu.s@u.nus.edu

 

Education

  • Master of Engineering (MEng), Chemical and Biomolecular Engineering, National University of Singapore, Singapore (2017-Present)
  • Bachelor of Technology (Tech), Chemical Engineering, Anna University (2013-2017)

Research Interests

  • Drug delivery systems
  • Medical devices

Publications

  1. V. Sunil, A. Mozhi, W. Zhan, J.H. Teoh, C.H. Wang,Convection enhanced delivery of light responsive antigen capturing oxygen generators for chemo-phototherapy triggered adaptive immunity”, Biomaterials, in press (2021).
  2. Mozhi A*, Sunil V*, Zhan W, Ghode PB, Thakor NV, Wang C-H. Enhanced penetration of pro-apoptotic and anti-angiogenic micellar nanoprobe in 3D multicellular spheroids for chemophototherapy. Journal of Controlled Release. 2020. *Authors contributed equally to this work
  3. Davoodi, L.Y. Lee, Lee, Q.Xu, V. Sunil, Y. Sun, S. Soh, C.H. Wang, “Drug Delivery Systems for Programmed and On-demand Release”, Advanced Drug Delivery Reviews, 132, 104-138 (2018).
  4. Kaleekkal, N. J., Radhakrishnan, R., Sunil, V., Kamalanathan, G., Sengupta, A., & Wickramasinghe, R. (2018). Performance evaluation of novel nanostructured modified mesoporous silica/polyetherimide composite membranes for the treatment of oil/water emulsion. Separation and Purification Technology, 205, 32-47.

Conference Presentations

  1. Vishnu Sunil, Vijay Kumar Sharma, Chi-Hwa Wang. Ultrasound triggered synergistic thrombolysis using tPA loaded microbubbles for the treatment of acute ischemic stroke. Poster presentation delivered at the American Institute of Chemical Engineers (AICHE) Annual Meeting, Pittsburgh, Oct 2018.
  2. Vishnu Sunil, Vijay Kumar Sharma, Chi-Hwa Wang. Biofabrication of ultrasound responsive tPA loaded microbubbles with narrow size distribution and enhanced stability for the treatment of acute ischemic stroke. Poster presentation delivered at the International Society of Pharmaceutical Engineers (ISPE) Annual Meeting, Philadelphia, Nov 2018.
  3. Vishnu Sunil, Anbu Mozhi, Chi-Hwa Wang.Glutathione modified Pro-Apoptotic and Anti-Angiogenic Micellar Nanoprobe for Chemophototherapy of High-grade Glioma. Poster presentation delivered at the Controlled Release Society Annual Meeting, Valencia, July 2019.

Teoh Jia Heng

Teoh Jia Heng  

Personal Particulars
PhD student
Department of Chemical and Biomolecular Engineering,

National University of Singapore,

4 Engineering Drive 4,

Singapore 117585.

Office: E5-01-01; WS2-06-15
Phone: (65) 8301 5011
Email: jiahengteoh93@u.nus.edu

 Education

Ph.D student, Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 2017 – present.

B.Eng., Chemical and Biomolecular Engineering, Nanyang Technological University, Singapore, 2017.

Research Interests

  • Application of 3D printing on hydrogels in regenerative medicine.
  • Application of bioreactor systems in the post-processing step of 3D bioprinting.

Journal Publications

  • Ramasamy, P. Davoodi, S. Vijayavenkataraman, J. H. Teoh, A. M.Thamizhchelvan, K. S. Robinson, B. Wu, J. Y.H. Fuh, T. DiColandrea, H. Zhao, E. B. Lane, C.H. Wang, “Optimized construction of a full thickness human skin equivalent using 3D bioprinting and a PCL/collagen dermal scaffold”, Bioprinting 21 e00123 (2021).
  • Sunil, A. Mozhi, W. Zhan, J.H. Teoh, C.H. Wang,Convection enhanced delivery of light responsive antigen capturing oxygen generators for chemo-phototherapy triggered adaptive immunity”, Biomaterials, in press (2021).
  • J. H. Teoh, A. M. Thamizhchelvan, P. Davoodi, S. Ramasamy, S. Vijayvenkataraman, Q. Yang, T. Dicolandrea, H. Zhao, J. Y. H. Fuh, C. H. Wang , “Investigation of the Application of a Taylor-Couette Bioreactor in the Post-Processing of Bioprinted Human Dermal Tissue,” Biochem. Eng. J., 151, 107317 (2019)
  • Qiao, W. C. Yan, J. H. Teoh, Y. W. Tong, C. H. Wang, “Experimental and Computational Studies of Oxygen Transport in a Taylor-Couette Bioreactor, Chem. Eng. J., 334, 1954 – 1964 (2017).

Conference Publications/Presentations

  • H. Teoh, A. M. Thamizhchelvan, C. H. Wang, “Post-Processing of 3D Bioprinted Human Dermal Tissue in the Dynamic Culture Environment of a Taylor-Couette Device,” 2019 AIChE Annual Meeting, Orlando, Florida, U.S.A., 10 – 15 November 2019
  • H. Teoh, C. H. Wang, “Production of Skin Tissue via 3D Bioprinting,” 2019 Controlled Release Society Annual Meeting, Valencia, Spain, 21 – 24 July 2019.
  • H. Teoh, R. Deng, C. H. Wang, “Computational and Experimental Investigations of the Interplay of Interactions between Gas, Solid and Liquid Phases in the Taylor-Couette Flow”, The 14th International Conference on Gas-Liquid and Gas-Liquid-Solid Reactor Engineering (GLS-14), Guilin, China, 31 May – 3 June, 2019.
  • H. Teoh, R. Deng, C. H. Wang, “From Bubbles to Cells: A decade of investigation into the phenomenon of object motion in the Taylor-Couette flow,” 20th International Couette-Taylor Workshop , Marseilles, France, 11 – 13 July 2018.

LI He

LI He  

Personal Particulars
PhD student
Department of Chemical & Biomolecular Engineering,

National University of Singapore, 1 Engineering Drive 2,

Singapore, 117576

Office: E1A-04-01
Phone: (65) 98301370
Email: E0225080@u.nus.edu

 

Education

Ph.D., Chemical and Biomolecular Engineering, National University of Singapore, Singapore (2017-Present)

B.S., Chemistry, Nanjing University, China, 2013-2017.

Research Interests

Waste-to-Resource Conversion

Publications

  1. Cui, X. Q. Li, H. Yao, Z. Y. Shen, Y. He, Z. L. Yang, X. E. Ng, H. Y. Wang, C. H., et al., Removal of nitrate and phosphate by chitosan composited beads derived from crude oil refinery waste: Sorption and cost-benefit analysis. Journal of Cleaner Production 2019, 207, 846-856. DOI 10.1016/j.jclepro.2018.10.027
  2. Li, H., et al., High-Purity V2O5 Nanosheets Synthesized from Gasification Waste: Flexible Energy Storage Devices and Environmental Assessment. Acs Sustainable Chemistry & Engineering 2019, 7 (14), 12474-12484. DOI 10.1021/acssuschemeng.9b02066
  3. Zhan, G. W.,Yao, Z. Y., Ng, W. C., Li, H., Lim, M. X. Zhi, Y. W., Koh, S. N. Wang, C. H., Economic production of monoclinic bismuth vanadate from waste vanadium ions: Process design and cost-benefit analysis. Journal of Cleaner Production 2019, 240. DOI 10.1016/j.jclepro.2019.118188

Conference Presentations

 

He Xin

He Xin  

Personal Particulars
Research Fellow
NUS Environmental Research Institute,

National University of Singapore,

1 CREATE Way, #15-02 CREATE Tower,

Singapore, 138602

Office: E2S2 15-02-22
Phone: (65) 97167443
Email: erihex@nus.edu.sg

 

Education

Ph.D, Chemical Engineering, West Virginia University, United States, 2014-2019.

M.Eng., Thermal Engineering, Tsinghua University, China, 2011-2014.

B.Eng., Thermal Engineering, Tsinghua University, China, 2007-2011.

Research Interests

  • Simulation and optimization of energy systems;
  • Model predictive control for nonlinear processes;

Research highlights

Ø  Dynamic modeling and simulation of fixed-bed biomass gasification.

The model is a novel shrinking core kinetic model addressing the peripheral fragmentation pheonmenon

The syngas generation, biochar productions, and PM emission transients can be quantified in a single model

Ø  Numerical data driven model development

The data driven PM emission model developed for gasification solid conversion, which is a radial basis function-based response surface model and employ experimental data pretreated by discrete wavelet transforms.

The artificial neural network model developed for biomass pyrolysis process

 

 

Publications

  • Kua, H.W., He, X., Tian, H., Goel, A., Xu, T., Liu, W., Yao, D., Ramachandran, S., Liu, X., Yong, Y.W., Dai., Y., Peng, Y., Wang, C.H. Life cycle climate change mitigation through next-generation urban waste management systems in high-density Asian cities: A Singapore Case Study. Submitted to Resource Conservation and Recycling (2021).
  • X. He, Q. Hu, H. Yang, C. A. Shoemaker, C.H. Wang, “Dynamic Modeling with Experimental Calibration for the Syngas Production from Biomass Fixed-bed Gasification”, Submitted to AIChE Journal  (2021).
  • X. He, C.H. Wang, C. A.  Shoemaker, “Multi-objective Optimization of an Integrated Biomass Waste Fixed-bed Gasification System for Power and Biochar Co-production”, Submitted to Computer and Chemical Engineering (2021).
  • X. He, H. Tian, Y. W. Tong, Y. Dai, and C.H. Wang, “Sustainable decision-making analysis for energy-water-food nexus: A Singapore waste management case study”, Submitted to Applied Energy (2021).
  • Q. Hu, X. He, Z. Yao, Y. Dai, C.H. Wang, “Gaseous production kinetics and solid structure analysis during isothermal conversion of biomass pellet under different atmospheres”, Journal of Energy Institute, in press (2021).
  • Yao, Z., He, X., Hu, Q., Cheng, W., Yang, H., & Wang, C. H. (2020). A Hybrid Peripheral Fragmentation and Shrinking-core Model for Fixed-bed Biomass Gasification. Chemical Engineering Journal, 124940.
  • Li, F., He, X., Shoemaker, C. A., & Wang, C. H. (2020). Experimental and numerical study of biomass catalytic pyrolysis using Ni2P-loaded zeolite: Product distribution, characterization and overall benefit. Energy Conversion and Management, 208, 112581.
  • He, X., & Lima, F. V. (2020). A modified SQP-based model predictive control algorithm: application to supercritical coal-fired power plant cycling. Accepted for Industrial & Engineering Chemistry Research. DOI:10.1021/acs.iecr.0c01843
  • He, X., & Lima, F. V. (2019). Development and implementation of advanced control strategies for power plant cycling with carbon capture. Computers & Chemical Engineering121, 497-509.
  • He, X., Wang, Y., Bhattacharyya, D., Lima, F. V., & Turton, R. (2018). Dynamic modeling and advanced control of post-combustion CO2 capture plants. Chemical Engineering Research and Design131, 430-439.
  • Lima, F. V., He, X., Amrit, R., & Daoutidis, P. (2017). Advanced control strategies for IGCC plants with membrane reactors for CO2 capture. Process Systems and Materials for CO2 Capture: Modelling, Design, Control and Integration, 501-521.

Conference Publications/ Presentations

  • Xin He and Chi-Hwa Wang. Optimization of biomass gasification for energy and biochar production. 4th E2S2-CREATE Biochar Workshop, Singapore, January 2020.
  • Xin He, Zhiyi Yao and Chi-Hwa Wang. Optimal Design and Operation of Biomass Waste Gasification for Energy and Biochar Production. AIChE Annual Meeting, Orlando, FL, November 2019.
  • Xin He and Fernando V. Lima. A modified SQP method for MPC of a supercritical pulverized coal-fired power plant during cycling. AIChE Annual Meeting, Pittsburgh, PA, November 2018.
  • Xin He and Fernando V. Lima. Design and implementation of model predictive control strategies for IGCC power plant cycling with carbon capture. AIChE Annual Meeting, Minneapolis, MN, November 2017
  • Yifan Wang, Xin He, Sai P. Vudata, Rebecca Kim, Debangsu Bhattacharyya, Fernando V. Lima and Richard Turton. Modeling the impact of power plant cycling and develop model-based optimal mitigation strategies. U.S.-China CERC-ACTC Annual Meeting, Lexington, KY, September 2017.
  • He Jin, Xin He, Pei Liu, Fernando V. Lima, Zheng Li, Debangsu Bhattacharyya and Richard Turton. Dynamic performance of post-combustion CO2 capture plant using MEA. In Proceedings of the 2017 International Conference on Coal Science & Technology and 2017 Australia-China Symposium on Energy, September 2017.
  • Jacob Douglas, Xin He, Fernando V. Lima. Modeling, simulation and control of a supercritical coal-fired power plant for smart grid applications. AIChE Annual Meeting, San Francisco, CA, November 2016.
  • Xin He and Fernando V. Lima. Design and implementation of model predictive control strategies for IGCC power plant cycling with carbon capture. AIChE Annual Meeting, San Francisco, CA, November 2016.
  • Xin He, Rishi Amrit, Richard Turton and Fernando V. Lima. Model predictive control of integrated gasification combined cycle power plants with membrane reactors for carbon capture. AIChE Annual Meeting, Salt Lake City, Utah, November 2015.

Yao Zhiyi

Yao Zhiyi  

Personal Particulars
Research Fellow
Department of Chemical & Biomolecular Engineering,

National University of Singapore, 4 Engineering Drive 4,

Singapore, 117576

Office: E1A-04-01
Phone: (65) 9084 1445
Email: cheyaoz@nus.edu.sg

Education

Ph.D, Chemical & Biomolecular Engineering, National University of Singapore, Singapore, 2013-2018.

B.Eng., Mechanical Engineering, Shanghai Jiao Tong University, China, 2009-2013.

Research Interests

Numerical simulation and experimental study on fixed-bed downdraft gasifier;

Anaerobic digestion and gasification hybrid system for potential energy recovery from yard waste and woody biomass;

Monitoring and characterization of particulate emission from the gasification and pyrolysis of biomass;

Reutilization of carbon black waste.

Spin-off Company of NUS: https://www.cbeecosolutions.com/

Research highlights

Ø  Numerical simulation and experimental study on fixed-bed downdraft gasifier for syngas and biochar co-production
·         The gasification model has the capacity to predict the production rate and quality of both syngas and biochar.

·         Economic evaluation was conducted taking into account economic value of produced syngas and biochar.

·         A three-region approach was applied to simulate heat and mass transfer inside the reactor based on different gas velocity profiles.

·         Several factors were investigated for evaluation of gasification performance, including the moisture content of feed stock, equivalence ratio, and air inlet location.

 

Ø  Anaerobic digestion and gasification hybrid system for potential energy recovery from yard waste and woody biomass
·         The feasibility of the proposed two-stage hybrid system was validated experimentally and numerically.

·         The proposed hybrid system could effectively improve the quality of produced gas.

·         The operating parameters were optimized to improve the overall energy efficiency of the system.

·         Drying process was found to play an important role in determining overall energy efficiency.

·         Optimal moisture content of AD residue was investigated for maximizing energy efficiency.

 

Ø  Particulate Emission from the Gasification and Pyrolysis of biomass: Concentration, Size Distributions, Respiratory Deposition-based Control Measure Evaluation

·         PM emissions of gasification and pyrolysis are compared.

·         The particles emitted from gasification and pyrolysis are mainly PM0.25-1.0 and PM1.0-2.5

·         Particle respiratory deposition modelling shows that most particles penetrate deeply into the last stage of the human respiratory system

·         A particle respiratory deposition-based cyclone design scheme is proposed.

·         The cyclone vortex finder diameter is the most sensitive design parameter.

 

Patent:

 Wang CH (30%*), Babu CM (30%*), Yao Z(30%*),  Anbu MT (10%*). A Cost-effective Way of Converting Low-grade Carbon to Activated Carbon for Environmental Applications. SG Non-Provisional Application No. 10202003008X (* contribution percentage)

Journal publications:

  1. Hu, X. He, Z. Yao, Y. Dai, C.H. Wang, “Gaseous production kinetics and solid structure analysis during isothermal conversion of biomass pellet under different atmospheres”, Journal of Energy Institute, in press (2021).
  2. Yao Z, He X, Hu Q, Cheng W, Yang H, & Wang CH. A Hybrid Peripheral Fragmentation and Shrinking-core Model for Fixed-bed Biomass Gasification. Chemical Engineering Journal, 2020: 124940.

3. Yao Z, You S, Dai Y, Wang CH. Particulate emission from the gasification and pyrolysis of biomass: Concentration, size distributions, respiratory deposition-based control measure evaluation. Environmental pollution. 2018 Nov 1;242:1108-18.

4. Yao Z, You S, Ge T, Wang CH. Biomass gasification for syngas and biochar co-production: Energy application and economic evaluation. Applied Energy. 2018 Jan 1;209:43-55.

5. Yao Z, Li W, Kan X, Dai Y, Tong YW, Wang CH. Anaerobic digestion and gasification hybrid system for potential energy recovery from yard waste and woody biomass. Energy. 2017 Apr 1;124:133-45.

6. You S, Yao Z, Dai Y, Wang CH. A comparison of PM exposure related to emission hotspots in a hot and humid urban environment: Concentrations, compositions, respiratory deposition, and potential health risks. Science of the Total Environment. 2017 Dec 1;599:464-73. († Authors contribute equally to this work.)

7. Zhan G, Yao Z, Ng WC, Li H, Lim MX, Zhi Y, Koh SN, Wang CH. Economic Production of Monoclinic Bismuth Vanadate from Waste Vanadium Ions: Process Design and Cost-Benefit Analysis. Journal of Cleaner Production. 2019 Dec 10;240:118188. († Authors contribute equally to this work.)

8. Li L, Yao Z, You S, Wang CH, Chong C, Wang X. Optimal design of negative emission hybrid renewable energy systems with biochar production. Applied Energy. 2019 Jun 1;243:233-49.

9. Tong H, Yao Z, Lim JW, Mao L, Zhang J, Ge TS, Peng YH, Wang CH, Tong YW. Harvest green energy through energy recovery from waste: A technology review and an assessment of Singapore. Renewable and Sustainable Energy Reviews. 2018 Dec 1;98:163-78.

10. Ramachandran S, Yao Z, You S, Massier T, Stimming U, Wang CH. Life cycle assessment of a sewage sludge and woody biomass co-gasification system. Energy. 2017 Oct 15;137:369-76.

11. Kan X, Yao Z, Zhang J, Tong YW, Yang W, Dai Y, Wang CH. Energy performance of an integrated bio-and-thermal hybrid system for lignocellulosic biomass waste treatment. Bioresource technology. 2017 Mar 1;228:77-88.

12. Shen Y, Li X, Yao Z, Cui X, Wang CH. CO2 gasification of woody biomass: Experimental study from a lab-scale reactor to a small-scale autothermal gasifier. Energy. 2019 Mar 1;170:497-506.

13. Cui X, Li H, Yao Z, Shen Y, He Z, Yang X, Ng HY, Wang CH. Removal of nitrate and phosphate by chitosan composited beads derived from crude oil refinery waste: Sorption and cost-benefit analysis. Journal of Cleaner Production. 2019 Jan 10;207:846-56.

14. Ong Z, Cheng Y, Maneerung T, Yao Z, Tong YW, Wang CH, Dai Y. Co‐gasification of woody biomass and sewage sludge in a fixed‐bed downdraft gasifier. AIChE Journal. 2015 Aug;61(8):2508-21.

Conference Publications/ Presentations:

1. Yao, Z., Prabhakar AK., Babu CM., Wang C. H.. Treatment and Utilization of Solid Residues from Waste Combustion Facilities and Carbon Black Waste for a Sustainable Environment. PRES’19, 20 – 23 October, Agios Nikolaos, Crete, Greece.

2. Yao, Z., Uzi, A., Ge T.S., Wang C. H.. Multi-Scale Modelling of Biomass Gasification: The Effects of Intraparticle Transfer on Syngas and Biochar Production. AIChE Annual Meeting, Pittsburgh, Pennsylvania, USA, 28 October-02 November 2018.

3. Yao, Z., Li, H., Koh, S. N., Wang C. H.. Experimental Investigation and Process Design for the Conversion of Carbon Black Waste into Valuable Resources. AIChE Annual Meeting, Pittsburgh, Pennsylvania, USA, 28 October-02 November 2018.

4. Yao, Z., You, S., Yan W.C., Dai Y., Tong, Y. W., Wang C. H.. Biomass gasification in a fixed bed downdraft gasifier: experimental study & comprehensive reactor and particle modelling. AIChE Annual Meeting, San Francisco, California, USA, 13-18 November 2016.

5. Yao, Z., Li, W., Kan, X., Dai, Y., Tong, Y. W., Wang, C. H.. Experimental and numerical study on combining anaerobic digestion and gasification for potential energy recovery from biomass and sewage sludge. AIChE Annual Meeting, San Francisco, California, USA, 13-18 November 2016.

6. Yao, Z., Li, W., Kan, X., Dai, Y., Tong, Y. W., and Wang, C. H.. Experimental and numerical study on combining anaerobic digestion and gasification for potential energy recovery from biomass and sewage sludge. 15th International Conference on Sustainable Energy Technologies (SET2016), Singapore, 20-22 July 2016.

7. Kan, X., Yao, Z., Zhang, J., Tong Y. W., and Wang, C. H.. Energy performance of a two-stage treatment for waste lignocellulosic biomass: Effects of organic loading rate, hydraulic residence time and carrier gas. 15th International Conference on Sustainable Energy Technologies (SET2016), Singapore, 20-22 July 2016.

Yao Dingding

Yao Dingding  

Personal Particulars
Research Fellow

NUS Environmental Research Institute

National University of Singapore, 1 Create Way

Singapore, 138602

Office: CREATE Tower 15-#02
Phone: (65) 9661 3915
Email: eriyd@nus.edu.sg

 

Education

Ph.D, State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, 2014-2018.

Research Interests

Thermo-chemical processing of plastic/biomass with nano-catalyst

Hydrogen and carbon nanomaterials production from catalytic pyrolysis of waste plastics

Research highlights

Waste to Energy – H2-enrich syngas and liquid chemicals can be produced from plastic waste using pyrolysis and reforming process

Waste to Resource – Carbon nanomaterials production from high C-containing resources from catalytic thermal cracking of waste resources

Resource Utilization– carbon materials from waste plastic for several applications including waste water treatment; electrochemical materials

Publications

  1. Yao, H. Li, Y. Dai, C.H. Wang, “Impact of temperature on the activity of Fe-Ni catalysts for pyrolysis and decomposition processing of plastic waste”, Chem. Eng. J., 408, 127268 (2021).
  2. Dingding Yao and Chi-Hwa Wang. “Pyrolysis and in-line catalytic decomposition of polypropylene to carbon nanomaterials and hydrogen over Fe-and Ni-based catalysts.” Applied Energy. 2020, 265:114819.

Conference Presentations

Dingding Yao and Chi-Hwa Wang. Thermal chemical recycling of waste plastics for valuable products. Sustainable Waste Management Workshop. 7-9 January 2020. Singapore. (Invited talk)

LI Xian

LI Xian  

Personal Particulars
Senior Research Fellow
NUS Environmental Research Institute,

1 CREATE Way, #15-02 CREATE Tower,

Singapore, 138602

Office: #15-02 CREATE Tower
Phone: (65) 8451 8702
Email: erilx@nus.edu.sg

 

Education

Ph.D. (Power Engineering and Engineering Thermo-physics), Shanghai Jiao Tong University, China, 2015

M.Eng. (Mechanical Engineering), Hohai University, China, 2010

B.Eng. (Thermal Power Engineering), Hohai University, China, 2007

Research Interests

  • Optical and thermal engineering sciences applied in solar energy conversion
  • Enhancement of solar-to-thermal conversion employed advanced solar optics and heat/mass transfer
  • Highly efficient solar cooling and heating for low-carbon/net-zero-energy buildings
  • Solar fuel converted from carbonaceous feedstock (solid waste), water and carbon dioxide

Research highlights

  • Energy and Fuels from Sunlight, Solid Waste, CO2 and H2O

A solar-and-biomass bi-source nexus is introduced to provide a promising and sustainable approach for the synthetics of cogeneration of electrical power, fuels and cooling & heating. Biomass/waste as a promising carbonaceous feedstock could be an appropriate candidate due to its combustible form stored high-energy density.

Solar gasification uses highly concentrated solar radiation as source of high-temperature process heat to drive gasification processes. In general, improving the heat value of the product syngas, the steam/CO2 mixture serves as the gasification agent of carbonaceous feedstock. Thus, solar energy in an amount equal to the enthalpy change of the endothermic reactions. Conversion performance of thermochemical gasification of solid waste can be significantly improved, accompanied by solar energy stored as a fuel carrier.

  • Solar Fuel Laboratory at E2S2-CREATE Program

 

Publications (Selected)

  • Li X, Lin M, Dai YJ*, Wang CH. Comparison-based optical assessment of hyperboloid and ellipsoid reflectors in a beam-down solar tower system with linear Fresnel heliostats. Journal of Solar Energy Engineering (ASME). 2017;139(6):061003.
  • Li X, Shen Y, Kan X, Hardiman TK, Dai Y, Wang CH*. Thermodynamic assessment of a solar/autothermal hybrid gasification CCHP system with an indirectly radiative reactor. Energy. 2018;142:201–14.
  • Li X, Kan X, Sun X, Zhao Y, Ge T, Dai Y, Wang CH*. Performance analysis of a biomass gasification-based CCHP system integrated with variable-effect LiBr-H2O absorption cooling and desiccant dehumidification. Energy. 2019;176:961-79.
  • Li X, Lin A, Young CH, Dai Y, Wang CH*. Energetic and economic evaluation of hybrid solar energy systems in a residential net-zero energy building. Applied Energy. 2019;254:113709.
  • Li X*, Wang CH*. 2017 P.V. Danckwerts Memorial Lecture Special Issue Editorial: Advances in Emerging Technologies of Chemical Engineering towards Sustainable Energy and Environment: Solar and Biomass. Chemical Engineering Science. 2019:115384. (Guest Editor)
  • Li X, Shen Y, Wei L, He C, Lapkin AA, Lipiński W, Dai Y, Wang CH*. Hydrogen production of solar-driven steam gasification of sewage sludge in an indirectly irradiated fluidized-bed reactor. Applied Energy. 2019;261: 114229.
  • Li X, Kan X, Sun X, Zhao Y, Ge T, Dai Y, Wang CH*. Performance analysis of a biomass gasification based CCHP system with variable-effect LiBr-H2O absorption cooling and desiccant dehumidification. Energy Procedia. 2019 Feb 1;158:4729-34.
  • Maneerung T1, Li X1, Li C, Dai Y, Wang CH*. Integrated downdraft gasification with power generation system and gasification bottom ash reutilization for clean waste-to-energy and resource recovery system. Journal of Cleaner Production. 2018;188:69–79. (Co-first author)
  • Shen Y, Li X, Yao Z, Cui X, Wang CH*. CO2 gasification of woody biomass: Experimental study from a lab-scale reactor to a small-scale autothermal gasifier. Energy. 2019;170:497-506.
  • Li L, Li X, Chong C, Wang CH, Wang X. A decision support framework for the design and operation of sustainable urban farming systems. Journal of Cleaner Production. 2020;268:121928.
  • Wei L, Li X, Yang W, Dai Y, Wang CH. Optimization of operation strategies of a syngas-fueled engine in a distributed gasifier-generator system driven by horticulture waste. Energy Conversion and Management. 2020;208:112580.
  • Kan X, Wei L, Li X, Li H, Zhou D, Yang W, et al. Effects of the three dual-fuel strategies on performance and emissions of a biodiesel engine. Applied Energy. 2020;262:114542.
  • J. Chen, X. Li, Y. Dai, C.H. Wang, “Energetic, economic, and environmental assessment of a Stirling engine based gasification CCHP system”, Applied Energy, 281, 116067 (2021).
  • X. Li, J. Chen, W. Lipinsky, Y. Dai, C.H. Wang “A 28 kWe multi-source high-flux solar simulator: Design, characterization, and modeling”, Solar Energy, 211, 569-583 (2020).
  • X.Y. Sun, J.L. Chen, Y. Zhao, X. Li, T.S. Ge, C.H. Wang, Y.J. Dai, “Experimental investigation on a dehumidification unit with heat recovery using desiccant coated heat exchanger in waste to energy system”, Applied Thermal Engineering, 185, 116342 (2021).
  • X. Li, J. Chen, X. Sun, Y. Zhao, C. Chong, Y. Dai, C.H. Wang, “Multi-criteria decision making of biomass gasification-based cogeneration systems with heat storage and solid dehumidification of desiccant coated heat exchangers”, Energy 233, 121122 (2021).
  • Arora, J. Jung, M. Liu, X. Li, A. Goel, J. Chen, S. Song, C. Anderson, D. Chen, K. Leong, S. H. Lim, S. L. Fong, S. Ghosh, A. Lin, H.W. Kua, H.T.W. Tan, Y. Dai, C.H. Wang, “Gasification biochar from horticultural waste: An exemplar of the circular economy in Singapore”, Science of the Total Environment 781, 146573 (2021).
  • Wang CH*, Tong YW*, Loh KC*, Wang RZ*, Li X*, Advanced technologies on sustainable energy and environment: SET2016 virtual special issue. Energy. 2017;137:350–2. (Guest Editor)

Conference Publications/ Presentations (selected)

  • Li X, Shen Y, Lipiński W, Dai Y, Wang CH*. Gasification of Organic Solid Waste Under High-Flux Solar Irradiation: Thermodynamics, Kinetics, and Fixed-Bed Reactor Evaluation. 2019 AIChE Annual Meeting. Hyatt Regency, Orlando, USA, November 10-15, 2019.
  • Li X*, Dai, Y, Wang CH. Waste-to-energy systems towards energetic and environmental sustainability. International Young Scholar’s Symposium of Fuzhou University Green Petrochemical Engineering Innovation Center. Fuzhou, China, 31 Dec 2018. (Invited Speaker)
  • Li X, Kan X, Sun X, Zhao Y, Ge T, Dai Y, Wang CH*. Performance analysis of a biomass gasification based CCHP system with variable-effect LiBr-H2O absorption cooling and desiccant dehumidification. ICAE2018. Hong Kong, China, 22–25 August 2018.
  • Li X*, Shen Y, Kan X, Dai Y, Wang CH. Potential Evaluation of a Solar/autothermal Hybrid Gasification based Tri-generation System in Singapore. 2018 AIChE Singapore Local Section Annual Conference. Singapore, 18 May 2018. (Invited Speaker)
  • Li X*, He C, Shen Y, Dai Y, Wang CH. Syngas Production from Sewage Sludge By Solar-Driven CO2 2017 AIChE Annual Meeting. Minneapolis, MN, USA, Oct. 29–Nov. 3, 2017.