TY - JOUR
T1 - Evaluation of microbial dynamics during post-consumption food waste composting
AU - Awasthi, Sanjeev Kumar
AU - WONG, Jonathan W C
AU - Li, Jiao
AU - Wang, Quan
AU - Zhang, Zengqiang
AU - Kumar, Sunil
AU - Awasthi, Mukesh Kumar
N1 - Funding Information:
The authors are grateful for the financial support from a Research Fund for International Young Scientists from National Natural Science Foundation of China , China (Grant No. 31750110469 ), and The National Key Research and Development Program of China , China ( 2016YFD0800606 ). We are also thanks to our all laboratory colleagues and research staff members for their constructive advice and help.
PY - 2018/3
Y1 - 2018/3
N2 - The objective of present study was to evaluate the efficacy of bacterial consortium to boost the microbial population and enzyme activities during post-consumption food waste (PCFWs) composting. Three treatments of PCFWs mixed with saw dust and 10% zeolite (dry weight basis) was design, where treatments T-2 and T-3 were applied with two distinctive bacterial consortium, respectively, while T-1 was served as control. The results showed that total aerobic proteolytic, amylolytic, cellulolytic, oil degrading and total aerobic bacteria populations were significantly higher in treatment T2 and T3 than T1. Consequently, the selected hydrolytic enzymes were also higher in T2 and T3 than T1, whose apparently gave the interesting information about rate of decomposition and end product stability. Furthermore, T2 and T3 showed significant correlations between the enzymatic activities and microbial population with other physico-chemical parameters. Based on germination assays and CO2-C evolution rate, T2 and T3 were considered phytotoxic free and highly stable final compost on day 56.
AB - The objective of present study was to evaluate the efficacy of bacterial consortium to boost the microbial population and enzyme activities during post-consumption food waste (PCFWs) composting. Three treatments of PCFWs mixed with saw dust and 10% zeolite (dry weight basis) was design, where treatments T-2 and T-3 were applied with two distinctive bacterial consortium, respectively, while T-1 was served as control. The results showed that total aerobic proteolytic, amylolytic, cellulolytic, oil degrading and total aerobic bacteria populations were significantly higher in treatment T2 and T3 than T1. Consequently, the selected hydrolytic enzymes were also higher in T2 and T3 than T1, whose apparently gave the interesting information about rate of decomposition and end product stability. Furthermore, T2 and T3 showed significant correlations between the enzymatic activities and microbial population with other physico-chemical parameters. Based on germination assays and CO2-C evolution rate, T2 and T3 were considered phytotoxic free and highly stable final compost on day 56.
KW - Bacterial consortium
KW - Compost
KW - Enzyme activity
KW - Food waste
KW - Phytotoxicity
KW - Stability
UR - http://www.scopus.com/inward/record.url?scp=85038845655&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2017.12.040
DO - 10.1016/j.biortech.2017.12.040
M3 - Journal article
C2 - 29274858
AN - SCOPUS:85038845655
SN - 0960-8524
VL - 251
SP - 181
EP - 188
JO - Bioresource Technology
JF - Bioresource Technology
ER -
