Cellulose degradation in municipal solid waste composting with sequential addition of sewage sludge

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" Cellulose degradation in municipal solid waste composting with sequential addition of sewage sludge "
M. W. Lau R. J. McClimans

Document Type	:	Latin Dissertation
Language of Document	:	English
Record Number	:	1112737
Doc. No	:	TLpq304028291
Main Entry	:	M. W. Lau
	:	R. J. McClimans
Title & Author	:	Cellulose degradation in municipal solid waste composting with sequential addition of sewage sludge\ M. W. LauR. J. McClimans
College	:	State University of New York College of Environmental Science and Forestry
Date	:	1992
student score	:	1992
Degree	:	M.S.
Page No	:	168
Abstract	:	The increasing cellulose content of solid waste has been identified as an obstacle in municipal solid waste (MSW) composting. Restricted carbon in cellulose delays the decomposition process, and enhances the loss of nitrogen with the production of odor. Compost stocks were established by mixing cafeteria waste and municipal sewage sludge. Sequential addition of sludge, a nitrogen source, in MSW composting was practiced. Compost was generated in a 10-week process. Cellulolytic fungal activity in compost was assessed and major decomposing fungi were identified. Major decomposition activity occurred in the thermophilic temperature range, but extreme temperatures (above 65C) impeded it. Decomposition was also found sensitive to the source and timing of sludge input. Sequential addition of sewage sludge into compost improved cellulose degradation and conserved nitrogen. The drawback in doing this may be the difficulty in meeting compliance with New York State Department of Environmental Conservation regulations for pathogen control in Class I compost. Extreme temperatures (above 65C) were found detrimental to the population of cellulolytic fungi. Some fungi were isolated from the compost: Aspergillus spp., Absidia sp., and Corynascus sepedonium (Emmons) v.Arx from both cellulose and starch media; Aspergillus niger, Mucor sp., and Humicola sp. from the starch medium.
Subject	:	Applied sciences
	:	Environmental science
	:	Health and environmental sciences
	:	Sanitation