Microbial dynamics and enzyme activities during rapid composting of municipal solid waste – A compost maturity analysis perspective

An investigation was carried out in the laboratory to find out the microbial dynamics and enzyme activities during rapid composting of municipal solid waste (MSW). Various treatments such as aeration (A), addition of chemical agents (glucose (G) and acetic acid (AA) and application of cellulolytic m...

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Bibliographic Details
Published in:	Bioresource technology Vol. 99; no. 14; pp. 6512 - 6519
Main Authors:	Raut, M.P., Prince William, S.P.M., Bhattacharyya, J.K., Chakrabarti, T., Devotta, S.
Format:	Journal Article
Language:	English
Published:	Kidlington Elsevier Ltd 01-09-2008 Elsevier
Subjects:	Agronomy. Soil science and plant productions Amylases - metabolism Applied sciences Biological and medical sciences Biological treatment of sewage sludges and wastes Biomass Biotechnology Compost Environment and pollution Enzyme activities Exact sciences and technology Facilitated aeration Fundamental and applied biological sciences. Psychology General agronomy. Plant production Hypocrea jecorina Industrial applications and implications. Economical aspects Microbial biomass Municipal solid waste Other nutrients. Amendments. Solid and liquid wastes. Sludges and slurries Peptide Hydrolases - metabolism Phanerochaete chrysosporium Phosphoric Monoester Hydrolases - metabolism Pollution Refuse Disposal - methods Soil Soil-plant relationships. Soil fertility. Fertilization. Amendments Wastes Facilitated aeration Enzyme activities Compost Microbial biomass Municipal solid waste Facilitation Microbial activity Urban waste Aeration Composting Enzymatic activity Solid waste Maturity
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Summary:	An investigation was carried out in the laboratory to find out the microbial dynamics and enzyme activities during rapid composting of municipal solid waste (MSW). Various treatments such as aeration (A), addition of chemical agents (glucose (G) and acetic acid (AA) and application of cellulolytic microbial (M) inoculum ( Phanerochaete chrysosporium and Trichoderma reesei) were used to facilitate the decomposition of MSW. The result of the present investigation revealed that the degradation of organic substrates were quick (within 9–12 days) in case of rapid composting as indicated by the reduction (below 20) in C/N ratio. Whereas, normal composting took more than 20 days to attain C/N ratio of below 20. Estimation of selected enzymes (amylase, protease, phosphatase and cellulase) provided information on the substrate specific degradation profiles of various labile substrates contained in organic waste.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0960-8524 1873-2976
DOI:	10.1016/j.biortech.2007.11.030