Utilizing Food Waste as a Valuable Feedstock for Clean Energy

R.N. Singh¹ , Tashmeer Khan² , Shravan Yadav³

Section:Research Paper, Product Type: Journal-Paper
Vol.6 , Issue.6 , pp.21-27, Jun-2020

Online published on Jun 30, 2020

Copyright © R.N. Singh, Tashmeer Khan, Shravan Yadav . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
 

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Abstract :
On an average in India food waste of about 67 million tons is created, which is worth about 92,000 crore Indian rupees. Proper treatment of this waste will reduce adverse impacts on land, soil, water and atmosphere. According to one of the studies, India wastes about 40% of their food prepared every year. This waste is a very rich source of protein, carbohydrate, oil, mineral and fat, which could be converted into value added products such as compost, bio-ethanol etc by using well-defined technologies. Considering the characteristics of food waste a compost bin was designed and developed, which would be suitable for an Indian household kitchen to provide odor free, ergonomic in nature and visually appealing compost. Studies have revealed that about 30 days are required to convert food waste into compost using bio-culture. Concentrations of bio-culture in Food waste plays a very important role in deciding the composting period. By maintaining 1: 100 ratio of bio-culture and Food waste, good quality compost could be prepared through anaerobic composting. Although, food waste could be converted into compost either by aerobic system or anaerobic process, the anaerobic process gives better conversion efficiency (83.33%) and consumes less time compared to the aerobic process. About 10 kg of good quality compost could be obtained from 12 kg food waste. It is also observed that leachate obtained from food waste could be successfully converted into bio-ethanol with 95% purity. The generated bio-ethanol had energy content of about 28.263 MJ/kg.

Key-Words / Index Term :
Food waste, Bio-culture, Composting, Bio-ethanol, Clean Energy

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