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Waste Management by Anaerobic Digestion of Kitchen Waste- A Review

Abstract

Kitchen waste (food waste) collected from hostels and canteen has high calorific and rich nutritive value to microbes due to which efficiency of methane production can be enhanced. Biogas (Green energy) as an energy source is cost effective and generates a high-quality renewable fuel. Biogas contains around 55-65% of methane, 30- 40% of carbon dioxide. Methane has a calorific value of 10 kWh/Nm3. Under anaerobic digestion the organic content is reduced, cow dung slurry along with the kitchen waste is used in the bioreactor as inoculum. The digested slurry is produced at the end of this process is used as a bio fertilizer. In this paper anaerobic digestion, biogas production and challenges for management of kitchen waste and usage of biogas as alternative to kerosene or LPG has been discussed.

K Mehraj Pasha, AmiyaAkram, KNarasimhulu, GN Kodandaramaiah

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