Microbial consortium for efficient composting of biosolid waste

Shilpa P., Girija D.

Abstract


Evaluation of formulated microbial consortium was carried out for validating the effectiveness of composting biosolid waste along with cow dung and uninoculated treatments. The newly developed microbial consortium was inoculated on biosolid waste in Thumburmuzhi composting units. Observations on volume reduction of biosolid waste and daily variation in temperature were recorded and microbial population in compost was assessed after maturation period. The maximum temperature during composting was recorded in inoculated treatment on the third day of composting and the temperature became stable after 13 days. The volume reduction of biosolid waste in Thumburmuzhi unit was recorded at different time intervals such as 15, 30, 45 and 80 days after inoculation. The results indicated that per cent volume reduction was non-significant among the treatments. However, numerically maximum per cent volume reduction was recorded in inoculated treatment over other treatments. After 80 days of composting, all the compost samples were assessed for microbial population. Significantly higher populations of bacteria and fungi were recorded in inoculated treatment. The results proved that composting of biosolid waste using microbial consortium is more efficient than cow dung and uninoculated method of composting. This investigation highlights the possibility of enhancing degradation of biosolid waste using microbial consortium in aerobic composting.


Keywords


Microbial consortium, Aerobic composting, Biodegradation, Biosolid Waste

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References


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