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Aerobic Thermophilic Composting of Municipal Solid Waste

Composting is a natural process that turns organic material into a dark rich substance called compost. Aerobic Composting is the creation of compost that depends on bacteria that thrive in an oxygen rich environment. Aerobic bacteria manage the chemical process by converting the inputs (i.e. air, water and carbon and nitrogen rich materials) into heat, carbon dioxide and ammonium. The ammonium is further converted by bacteria into plant nourishing nitrites and nitrates through the process of nitrification. Thermophilic Composting is breaking down biological waste with thermophilic (heat loving) bacteria. A cylindrical reactor was made. Organic waste included dry vegetable waste collected from MSW ramp, Koregaon park, Pune. The characteristics of compost like pH, moisture content, temperature, C/N ratio and volume reduction were studied for the period of maturation (42days). It can be concluded that the values are within the desired limits and compost is suitable for ornamental plants. The setup of reactor is affordable and thus the compost obtained is effective and economical.