title: Role of biochar amendment in mitigation of nitrogen loss and greenhouse gas emission during sewage sludge composting.
abstract: The objective of the present study was to mitigate the greenhouse gas (GHG) emissions during composting of dewatered fresh sewage sludge (DFSS) employing biochar combined with zeolite (B+Z) and low dosage of lime (B+L). The 12% biochar was mixed at a 10%, 15% and 30% of zeolite and 1% lime, while without any additives was used as control. The results indicated that the combine use of B+Z was significantly increased the enzymatic activities and reduced the ammonia loss 58.03-65.17% as compare to B+L amended treatment, while CH4 92.85-95.34% and N2O 95.14-97.28% decreased than control. The B+L1% amendment significantly increased the organic matter degradation but the reduction was lower than B+Z and that could reduce the CH4 and N2O emission by 55.17-63.08% and 62.24-65.53% as compare to control, respectively. Overall our results demonstrated that 12%B+Z10% addition into DFSS can be potentially used to improve the DFSS composting by mitigation of GHG emission and nitrogen loss.
authors: College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China; Department of Biotechnology, Amicable Knowledge Solution University, Satna, India.
authors: Mukesh Kumar
authors: MK
authors: Awasthi
authors: College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China.
authors: Quan
authors: Q
authors: Wang
authors: College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China.
authors: Xiuna
authors: X
authors: Ren
authors: College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China.
authors: Junchao
authors: J
authors: Zhao
authors: College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China.
authors: Hui
authors: H
authors: Huang
authors: Department of Microbiology, Barkatullah University, Bhopal, India.
authors: Sanjeev Kumar
authors: SK
authors: Awasthi
authors: College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China.
authors: Altaf Hussain
authors: AH
authors: Lahori
authors: College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China.
authors: Ronghua
authors: R
authors: Li
authors: College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China.
authors: Lina
authors: L
authors: Zhou
authors: College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China. Electronic address: zhangzq58@126.com.
authors: Zengqiang
authors: Z
authors: Zhang
mesh_terms: D000393:Air Pollutants / Q000737:chemistry / Q000378:metabolism*; D017610:Calcium Compounds / Q000378:metabolism; D002606:Charcoal / Q000378:metabolism*; D017752:Greenhouse Effect; D009584:Nitrogen / Q000378:metabolism*; D017672:Nitrogen Compounds / Q000378:metabolism; D010087:Oxides / Q000378:metabolism; D012722:Sewage; D017641:Zeolites / Q000378:metabolism
chemical_list: D000393:Air Pollutants; D017610:Calcium Compounds; D017672:Nitrogen Compounds; D010087:Oxides; D012722:Sewage; C540010:biochar; D017641:Zeolites; D002606:Charcoal; C016538:lime; D009584:Nitrogen
keywords: Biochar; Dewatered fresh sewage sludge; Greenhouse gas; Mitigation; Nitrogen conservation