[Transformation of organic matter during thermophilic composting of pig manure].
Thermophilic composting of pig manure was studied in an attempt to elaborate upon organic matter transformation during the process and provided parameters for product maturity using chemical method. The following parameters were measured in 11 samples during the 42 days of composting: organic matter, dissolved organic carbon (DOC), degradable organic matter and humic matter (HM). Organic matter decreased during composting process constantly; DOC concentration increased to maximum at 10 days and declined thereafter; degradable organic matter decreased whole composting, but they increased in start of high-temperature stage; The increasing level of HM at various stages of composting indicate the progression of humification; H/F provide information correlating to conventional chemical parameters (organic matter, DOC) of compost maturity. Moreover, H/F has correlating to degradable organic matter and HM.
Gao
Wei
W
Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China.
Zheng
Guo-di
GD
Gao
Ding
D
Chen
Tong-bin
TB
Han
Xiao-ri
XR
Zhang
Yi-an
YA
D000818:Animals; D001673:Biodegradation, Environmental; D006812:Humic Substances / Q000032:analysis*; D008372:Manure / Q000032:analysis*; D009930:Organic Chemicals / Q000032:analysis / Q000378:metabolism*; D012037:Refuse Disposal / Q000379:methods*; D013552:Swine; D013696:Temperature
D006812:Humic Substances; D008372:Manure; D009930:Organic Chemicals