AY1718G17.1 – “Optimising spent coffee grounds for mushroom growth”

Bai Sin Yeou, Huo Lushuang, Khoo Han Sheng, Marcus, Sew Wen Xin

Academic Advisor: Mr. Lim Cheng Puay

Singapore alone consumes about 2.1kg coffee per capita and the spent coffee grounds (SCGs) produced brings about significant waste disposal issues. By tapping on its high nutrient and energy content, SCGs can be added into composts and be used to promote plant or fungi growth. To further minimise household waste, the group investigates the idea of creating modular mushroom growth kits using SCG and growing in containers made from household wastes (plastic bottles and milk cartons). The team also plans to find out optimum conditions for mushroom growth to occur indoors and share it with households.

Keywords: Waste, Coffee grounds, Food waste, Urban farming, Recycling

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