Abstract—In this research, we focused on the recycling of food waste using sodium hydroxide (NaOH). Pyrolysis of rice, one of the major elements of food waste in Japan, was carried out to obtain carbon material with adsorption ability, together with fuel gases (H
2, CH
4). As a result, it was possible to convert rice into carbon material while generating fuel gas. With increasing the NaOH addition and temperature, the contents of CO and CO
2 decreases, those of H
2 and CH
4 increased in the generated gas, and the mass of the residue after pyrolysis with NaOH decreases to one-tenth weight of raw rice. The residue after pyrolysis is a carbonaceous material with approximately 80% carbon content, and the residue after pyrolysis with NaOH ( rice sample : NaOH = 1 : 1 ) has smooth porous surface with higher specific surface area (901 m
2/g) than that after pyrolysis without NaOH (72 m
2/g).
Index Terms—Food waste, sodium hydroxide, fuel gas, pyrolysis, porous carbon material.
Masami Nakayasu and Takaaki Wajima are with Department of Urban Environment Systems, Graduate .School of Engineering, Chiba University, Japan (e-mail: mamihimu@gmail.com).
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Cite: M. Nakayasu and T. Wajima, "Development of Food Waste Disposal Technology Using Sodium Hydroxide," International Journal of Chemical Engineering and Applications vol. 10, no. 3, pp. 64-68, 2019.
