Evaluation of biochar amended biosolids co-composting to improve the nutrient transformation and its correlation as a function for the production of nutrient-rich compost.
The influence of biochar amended dewatered fresh sewage sludge (DFSS)-wheat straw co-composting on nutrients transformation and end products quality was investigated. This is the first study to examine the biochar applied compost quality with different kgha-1TKN on Brassica rapa L. growth. Seven mixtures were composted over 8-weeks period in 130-L reactor using the same DFSS with different concentration of biochar (2%, 4%, 6%, 8%, 12% and 18% on dry weight basis) and without additive added treatment served as control. The results indicated that compost with 8-12% biochar became more humified within 35days of composting, and the compost maturity parameters also showed that this could be much more feasible approach to increased water-soluble nutrients including NO3, DOC, DON, PO43-, K+and Na+, but bioavailability of Cu, Zn, Ni and Pb content reduced as compared to control. Finally, results showed that 8-12% biochar was recommended for DFSS composting and 150kgha-1TKN of compost dosages for organic farming.
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.
Mukesh Kumar
MK
Awasthi
College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China.
Quan
Q
Wang
College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China.
Hongyu
H
Chen
College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China.
Meijing
M
Wang
College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China.
Xiuna
X
Ren
College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China.
Junchao
J
Zhao
College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China.
Jiao
J
Li
College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China.
Di
D
Guo
College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China.
Dong-Sheng
DS
Li
International Institute of Waste Management (IIWM), Bhopal, Madhya Pradesh, India.
Sanjeev Kumar
SK
Awasthi
College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China.
Xining
X
Sun
College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China. Electronic address: zhangzq58@126.com.
Zengqiang
Z
Zhang
D002606:Charcoal; D012722:Sewage; D012987:Soil; D014867:Water
D012722:Sewage; D012987:Soil; C540010:biochar; D014867:Water; D002606:Charcoal
Bioavailable; Biochar; Dewatered fresh sewage sludge; Maturity parameters; Water-soluble nutrients