title: The use of concentrated monosodium glutamate wastewater as a conditioning agent for adjusting acidity and minimizing ammonia volatilization in livestock manure composting.
abstract: In this study, concentrated monosodium glutamate waste (CMGW) was proposed as a conditioning agent to adjust acidity and decrease ammonia (NH3) volatilization in thermophilic aerobic composting based on two incubation experiments. The results showed that with the addition of CMGW, NH3 volatilization of compost mixture under high temperature phase decreased significantly and pH met the current national standard within 5.5-8.5. When CMGW dosage increased to 2% (v/w), the decrease in NH3 volatilization was as high as 78.9%. This effect was enhanced by repeated application of CMGW. Furthermore, although the electrical conductivity increased with the application of CMGW, both the germination index and the microbial respiration of compost mixture implied that CMGW had no negative effects on the maturity of compost, instead, a comprehensive maturity might be accelerated. It was concluded that CMGW was an optional conditioning agent for thermophilic aerobic composting of livestock manure in regards to adjusting acidity and preventing nitrogen loss from NH3 volatilization.
authors.affiliation: Ministry of Education Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, PR China.
authors.forename: Li
authors.initials: L
authors.lastname: Liu
authors.affiliation: Ministry of Education Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, PR China; Agricultural Technology Popularization Center of Zhejiang Province, Hangzhou 310020, PR China.
authors.forename: Haimin
authors.initials: H
authors.lastname: Kong
authors.affiliation: Zhejiang Key Laboratory of Subtropical Soil Science and Plant Nutrition, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, PR China.
authors.forename: Beibei
authors.initials: B
authors.lastname: Lu
authors.affiliation: Zhejiang Key Laboratory of Subtropical Soil Science and Plant Nutrition, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, PR China.
authors.forename: Jibing
authors.initials: J
authors.lastname: Wang
authors.affiliation: College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, PR China.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Xie
authors.affiliation: Ministry of Education Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, PR China; Zhejiang Key Laboratory of Subtropical Soil Science and Plant Nutrition, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, PR China. Electronic address: pfang@zju.edu.cn.
authors.forename: Ping
authors.initials: P
authors.lastname: Fang
mesh_terms: D000641:Ammonia / Q000737:chemistry*; D000818:Animals; D058751:Livestock / Q000378:metabolism*; D008372:Manure; D009584:Nitrogen / Q000032:analysis; D012970:Sodium Glutamate / Q000737:chemistry*; D012987:Soil / Q000737:chemistry*; D014835:Volatilization; D062065:Wastewater / Q000737:chemistry*
chemical_list: D000641:Ammonia; D008372:Manure; D009584:Nitrogen; D012970:Sodium Glutamate; D012987:Soil; D062065:Wastewater
keywords: Concentrated monosodium glutamate waste (CMGW); Microbial respiration; Nitrogen loss; Thermophilic aerobic composting; pH