Spent mushroom substrate biochar as a potential amendment in pig manure and rice straw composting processes.
Spent mushroom substrate (SMS) is a bulky waste byproduct of commercial mushroom production, which can cause serious environmental problems and, therefore, poses a significant barrier to future expansion of the mushroom industry. In the present study, we explored the use of SMS as a biochar to improve the quality of bio-fertilizer. Specifically, we performed a series of experiments using composting reactors to investigate the effects of SMS biochar on the physio-chemical properties of bio-fertilizer. Biochar was derived from dry SMS pyrolysed at 500°C and mixed with pig manure and rice straw. Results from this study demonstrate that the addition of biochar significantly reduced electrical conductivity and loss of organic matter in compost material. Nutrient analysis revealed that the SMS-derived biochar is rich in fertilizer nutrients such as P, K, Na, and N. All of these findings suggest that SMS biochar could be an excellent medium for compost.
a School of Environmental Science and Engineering and Institute of Environmental Health and Pollution Control , Guangdong University of Technology , Guangzhou , People's Republic of China.|b Chinese Academy of Sciences , Institute of Urban Environment , Xiamen , People's Republic of China.
Ken-Lin
KL
Chang
a School of Environmental Science and Engineering and Institute of Environmental Health and Pollution Control , Guangdong University of Technology , Guangzhou , People's Republic of China.
Xi-Mei
XM
Chen
a School of Environmental Science and Engineering and Institute of Environmental Health and Pollution Control , Guangdong University of Technology , Guangzhou , People's Republic of China.
Jian
J
Sun
a School of Environmental Science and Engineering and Institute of Environmental Health and Pollution Control , Guangdong University of Technology , Guangzhou , People's Republic of China.
Jing-Yong
JY
Liu
a School of Environmental Science and Engineering and Institute of Environmental Health and Pollution Control , Guangdong University of Technology , Guangzhou , People's Republic of China.
Shui-Yu
SY
Sun
a School of Environmental Science and Engineering and Institute of Environmental Health and Pollution Control , Guangdong University of Technology , Guangzhou , People's Republic of China.
Zuo-Yi
ZY
Yang
b Chinese Academy of Sciences , Institute of Urban Environment , Xiamen , People's Republic of China.
Yin
Y
Wang
D000363:Agaricales; D000818:Animals; D002606:Charcoal; D004553:Electric Conductivity; D005308:Fertilizers / Q000032:analysis; D008372:Manure; D009584:Nitrogen / Q000032:analysis; D012275:Oryza; D010758:Phosphorus / Q000032:analysis; D011188:Potassium / Q000032:analysis; D012964:Sodium / Q000032:analysis; D012987:Soil / Q000737:chemistry; D013552:Swine; D014866:Waste Products
D005308:Fertilizers; D008372:Manure; D012987:Soil; D014866:Waste Products; C540010:biochar; D002606:Charcoal; D010758:Phosphorus; D012964:Sodium; D009584:Nitrogen; D011188:Potassium
Spent mushroom substrate; biochar; composting; nutrient; physico-chemical property