title: Changes in physical, chemical, and microbiological properties during the two-stage co-composting of green waste with spent mushroom compost and biochar.
abstract: This research determined whether the two-stage co-composting can be used to convert green waste (GW) into a useful compost. The GW was co-composted with spent mushroom compost (SMC) (at 0%, 35%, and 55%) and biochar (BC) (at 0%, 20%, and 30%). The combined addition of SMC and BC greatly increased the nutrient contents of the compost product and also improved the compost quality in terms of composting temperature, particle-size distribution, free air space, cation exchange capacity, nitrogen transformation, organic matter degradation, humification, element contents, abundance of aerobic heterotrophs, dehydrogenase activity, and toxicity to germinating seeds. The addition of 35% SMC and 20% BC to GW (dry weight % of initial GW) and the two-stage co-composting technology resulted in the production of the highest quality compost product in only 24 days rather than the 90-270 days required with traditional composting.
authors.affiliation: College of Forestry, Beijing Forestry University, Beijing 100083, PR China. Electronic address: zhanglu1211@gmail.com.
authors.forename: Lu
authors.initials: L
authors.lastname: Zhang
authors.affiliation: College of Forestry, Beijing Forestry University, Beijing 100083, PR China. Electronic address: sunxy@bjfu.edu.cn.
authors.forename: Xiangyang
authors.initials: X
authors.lastname: Sun
mesh_terms: D000363:Agaricales / Q000378:metabolism*; D000704:Analysis of Variance; D019149:Bioreactors; D002606:Charcoal / Q000378:metabolism*; D006812:Humic Substances / Q000382:microbiology; D010316:Particle Size; D010944:Plants / Q000737:chemistry*; D012987:Soil / Q000737:chemistry*; D012988:Soil Microbiology; D014866:Waste Products
chemical_list: D006812:Humic Substances; D012987:Soil; D014866:Waste Products; C540010:biochar; D002606:Charcoal
keywords: Biochar; Compost; Green waste; Spent mushroom compost; Two-stage co-composting