The new paper of EWAT group in collaboration with Harbin Institute of Technology, features an unconventional electro-Fenton system using tripolyphosphate (3-PP) electrolyte in order to overcome pH restrictions, which allowed a wastewater treatment process working at near-neutral pH and mineralization efficiencies of 81.5% after 2 h of treatment. If you want to read more about it, click on the following link:

https://www.sciencedirect.com/science/article/abs/pii/S0304389420306300

EWAT group is proud of women in science and congratulates Dr. Fengxia Deng for her hard work.

The removal of non-biodegradable organics from industrial wastewater through adsorption onto activated carbon (AC) is a simple, effective and inexpensive process; however, as with any separation technology there is a need to regenerate the exhausted material. The new research paper of EWAT group by Dr. Orlando Garcia et al., shows the electrochemical regeneration of AC in a single reactor with continuous flow, where the impact of saturation level was studied. Click the following link to read the paper: https://www.sciencedirect.com/science/article/abs/pii/S0008622320301871

or contact us if you want a soft copy.

Today we say goodbye to Dr. Xiaogan Wu of Yangtze University. During the past year,  Dr. Wu was working in our laboratory developing anode materials to carry out the anodic oxidation of recalcitrant compounds in wastewater, obtaining many interesting results, which will be published soon. All members of EWAT group wish him all the success in his future endeavors, hoping to have more successful collaborations in the future.

From left to right: Dr. Hugo Olvera, Riccardo Muzzi, Dr. Xiaogan Wu, Dr. Olivier Lefebvre, Dr. Zuxin Wang and Dr. Orlando Garcia

“Another project known as EWat by Dr Olivier Lefebvre, won the IES Prestigious Engineering Achievement Award 2019 at the World Engineers Summit in August. Targeting hard-to-treat industrial water, it is able to remove up to 99 per cent of impurities without producing any secondary waste, said Dr Lefebvre who has worked with industries such as chemical, electronics and farms, which produce very challenging wastewaters and sludge.

With emerging contaminants such as pharmaceuticals, pesticides and residues from a wide range of personal care and common everyday products finding their way into our water these days, Prof Hu and her team are also paying a lot of attention to this area of treatment. Working with French researchers, they have successfully turned biomass such as cut tree branches and leaves into activated carbon for removing emerging contaminants. They have also developed a novel ultraviolet advanced oxidation process (UV-AOP) to generate highly efficient oxidants for breaking down emerging organic contaminants. A pilot-testing system is in the works to further test and evaluate its long term performance.”

Full and original article at:

http://news.nus.edu.sg/research/saving-our-shores-and-water

Assistant Professor Olivier Lefebvre, leader of EWAT group, in conversation with Claressa Monteiro from Money FM 89.3 and Dr. Chew Tuan Chiong member of the awards committee from the Institution of Engineers, Singapore (IES).

Click below if you want to listen the full interview.

As every summer, EWAT group is happy to receive abroad students. This time Huong Dang (Arizona State University, USA), Zharfa Nurrachma (University of Illinois Urbana-Champaign, USA) and Rishikesh Veer (BITS Pilani University, India) realized a summer internship with our research group. We hope everyone enjoyed their stay in the beautiful red dot and return to your universities with a little more knowledge. Bon voyage, have a safe trip back home!

The school year comes to an end and with it a new batch of students graduate. EWAT group wishes the best to our students in environmental engineering who during the last 12 months were involved in projects regarding the treatment of industrial wastewater by electrochemical advanced oxidation processes, hoping all of them contribute to a better world and have a successful career in this new stage of their lives. Jiayou!

The 257th ACS National meeting was held in Orlando, Florida, from March 31 to April 4. This year more than 14,000 of chemical professionals attended. EWAT group was represented by Asst. Prof. Olivier Lefebvre and Dr. Hugo Olvera, who showed some of our latest research results with the oral presentations: “FTO-TiO2 photoelectrocatalytic degradation of triphenyltin chloride coupled to photoelectro-Fenton”, “Synthesis of a graphene-coated cathode for the electro-Fenton treatment of TMDD” and “Innovative 3D printed materials for electrochemical wastewater treatment”

The versatility of electrochemical technologies makes it possible to treat a wide variety of effluents that can not be handled by conventional methods. The new publication of EWAT group by Dr. Hugo Olvera-Vargas et alii, combines two electrochemical processes to achieve an efficient treatment of anaerobic sludge. If you are interested in more information click on the following link to read the paper (https://www.sciencedirect.com/science/article/abs/pii/S004313541930137X ) or contact us. Bravo Hugo!

Once a year, EWAT group gives a lecture in electrochemistry to undergraduate students from the faculty of Civil and Environmental Engineering at NUS.

The best way to explain electrochemistry is carrying out simple experiments during the lecture. Here, we are showing the electrolysis of water in a solution containing phenolphthalein (an indicator sensitive to pH changes). During the electrolysis of water we generate oxygen and hydrogen, can you guess what else is being generated?

The answer is: -OH and H+, causing a local change of pH in the vicinity of the electrodes, which develops a pink coloration.

If you want to do the experiment at home, you only need:

• a battery
• 2 pencils
• salt (1 spoon)
• pH indicator (few drops, get it at any aquarium shop)

Mix the salt and pH indicator in water, connect each pencil to the negative and positive terminal of the battery, immerse them in the water solution, done! electrolysis in action!