Temperature, pH and loading rate effect on biogas generation from domestic waste

Abstract

Biogas typically refers to a gas produced by the biological breakdown of organic matter in the absence of oxygen. Anaerobic digestion is a microbial process for production of biogas, which consists of primarily methane (CH4) & carbon dioxide (CO2). In this paper the various factors affecting biogas generation rate such as temperature, pH, and organic loading rate are studied. An Organic Processing Facility has been created for generation of the biogas which will cut down on landfill waste, be more cost effective, eco-friendly, generate a high-quality renewable fuel and reduce carbon dioxide & methane emissions. From the results and graphs we can conclude that biogas generration rate increases with increase in temperature (i.e. thermophilic range) and loading rate at neutral pH value. We can achieve higher biogas yield from the organic waste and which is equals to 1900l from 2.2kg of domestic waste. Biogas generation rate increases with decrease in methane content but with neglegible amount i. e. 2%. But operating cost of the setup is increases for heating purpose and additives so this may useful for the higher wastage.