title: The influences of inoculants from municipal sludge and solid waste on compost stability, maturity and enzyme activities during chicken manure composting.
abstract: The aim of this study was to investigate the influence of inoculants on compost stability, maturity and enzyme activities during composting of chicken manure and cornstalk. Two microbial inoculants (originated from aerobic municipal sludge and municipal solid waste, respectively) were used in composting at the rate of 0.3% of initial raw materials (wet weight). No microbial inoculums were added to the control. The experiment was conducted under aerobic conditions for 53 days. The results show that enzyme activity is an important index to comprehensively evaluate the composting stability and maturity. Microbes originated from sludge works best in terms of composting stability and maturity (C:N ratio decreased from 15.5 to 10, and germination index increased to 109%). Microbial inoculums originated from sludge and municipal solid waste extended the time of thermophilic phase for 11 and 7 days, respectively. Microbial inoculums originated from sludge and MSW significantly increased the average of catalase activity (by 15.0% and 12.1%, respectively), urease activity (by 21.5% and 12.2%, respectively) and cellulase activity (by 32.1% and 26.1%, respectively) during composting.
authors.affiliation: a College of Resources and Environmental Sciences , China Agricultural University , Beijing , People's Republic of China.
authors.forename: Shuyan
authors.initials: S
authors.lastname: Li
authors.affiliation: b Institute of Plant Nutrition and Resources , Beijing Academy of Agriculture and Forestry Sciences , Beijing , People's Republic of China.
authors.forename: Jijin
authors.initials: J
authors.lastname: Li
authors.affiliation: a College of Resources and Environmental Sciences , China Agricultural University , Beijing , People's Republic of China.
authors.forename: Jing
authors.initials: J
authors.lastname: Yuan
authors.affiliation: a College of Resources and Environmental Sciences , China Agricultural University , Beijing , People's Republic of China.
authors.forename: Guoxue
authors.initials: G
authors.lastname: Li
authors.affiliation: a College of Resources and Environmental Sciences , China Agricultural University , Beijing , People's Republic of China.
authors.forename: Bing
authors.initials: B
authors.lastname: Zang
authors.affiliation: a College of Resources and Environmental Sciences , China Agricultural University , Beijing , People's Republic of China.
authors.forename: Yangyang
authors.initials: Y
authors.lastname: Li
mesh_terms: D000818:Animals; D002244:Carbon / Q000032:analysis; D002374:Catalase / Q000737:chemistry; D002645:Chickens; D008372:Manure; D009584:Nitrogen / Q000032:analysis; D012037:Refuse Disposal / Q000379:methods; D012722:Sewage; D012987:Soil; D062611:Solid Waste; D013696:Temperature
chemical_list: D008372:Manure; D012722:Sewage; D012987:Soil; D062611:Solid Waste; D002244:Carbon; D002374:Catalase; D009584:Nitrogen
keywords: Microbial inoculants; catalase activity; cellulase activity; composting; urease activity