title: Reducing nitrogen loss and phytotoxicity during beer vinasse composting with biochar addition.
abstract: The aim of this study was to investigate the feasibility of composting of beer vinasse generated from brewing industry, the effect of biochar amendment on beer vinasse composting was also evaluated based on the changes of different physicochemical parameters, phytotoxicity and final compost quality. Four different treatments were performed of beer vinasse with biochar addition at 0, 5%, 10%, 15% (w/w dry basis). The final product obtained from beer vinasse composting was phytotoxicity-free (GI: 120.8%), mature (C/N: 19.88, NH4+-N: 295.0mg/kg, DOC: 9.76g/kg) and nutrient-rich (especially for P: 1.92%) compost except high N loss (60.76%), which had the potential to be as soil amendment or fertilizer. Biochar addition contributed to decomposition of DOC indicating higher microbial activity and attain phytotoxicity-free standard rapidly. N loss significantly reduced by 27% with biochar at 15% addition. And 15% biochar addition ensured all parameters, which was involved in composts quality, to attain the mature standard. Therefore, it was suggested that biochar addition at 15% was optimal.
authors.affiliation: College of Life Science, Northeast Agricultural University, Harbin 150030, China.
authors.forename: Xueqin
authors.initials: X
authors.lastname: Wang
authors.affiliation: College of Life Science, Northeast Agricultural University, Harbin 150030, China.
authors.forename: Yue
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: College of Life Science, Northeast Agricultural University, Harbin 150030, China.
authors.forename: Huan
authors.initials: H
authors.lastname: Wang
authors.affiliation: College of Water Science, Beijing Normal University, Beijing 100012, China.
authors.forename: Xinyu
authors.initials: X
authors.lastname: Zhao
authors.affiliation: College of Life Science, Northeast Agricultural University, Harbin 150030, China.
authors.forename: Hongyang
authors.initials: H
authors.lastname: Cui
authors.affiliation: College of Life Science, Northeast Agricultural University, Harbin 150030, China. Electronic address: weizimin@neau.edu.cn.
authors.forename: Zimin
authors.initials: Z
authors.lastname: Wei
mesh_terms: D001515:Beer; D002606:Charcoal; D002681:China; D005308:Fertilizers; D018525:Germination / Q000187:drug effects; D007220:Industrial Waste; D059013:Microbial Consortia / Q000502:physiology; D009584:Nitrogen / Q000032:analysis / Q000378:metabolism; D012639:Seeds / Q000187:drug effects; D012987:Soil; D018675:Toxicity Tests; D018505:Waste Management / Q000379:methods
chemical_list: D005308:Fertilizers; D007220:Industrial Waste; D012987:Soil; C540010:biochar; D002606:Charcoal; D009584:Nitrogen
keywords: Beer vinasse; Biochar addition; Composting; Nitrogen