Environmental Life Cycle Assessments of Chicken Manure Compost Using Tobacco Residue, Mushroom Bran, and Biochar as Additives
Journal
Sustainability (Switzerland)
Journal Volume
14
Journal Issue
9
Date Issued
2022
Author(s)
Zhang, Bangxi
Fu, Tianhong
Cui, Shihao
Fan, Beibei
Tan, Yi
Luo, Wenhai
Wei, Quanquan
Li, Guoxue
Peng, Yutao
Abstract
As an environmental management method, the (life cycle assessment) LCA method can be used to compare the differences between various waste treatment processes in order to provide an environmentally friendly and economically feasible method for waste management. This study focused on the reutilization of typical organic waste to produce organic fertilizer in southwest China and used the life cycle assessment method to evaluate three aerobic chicken manure composting scenarios modified with three additives (biochar, mushroom bran, and tobacco residue) from an environmental and economic perspective. The results show that the total environmental loads of the optimized treatments using mushroom bran and biochar mixed with mushroom bran as additives were reduced by 30.0% and 35.1%, respectively, compared to the control treatment (viz. chicken manure composted with tobacco residue). Compared to the control treatment, the optimized composting treatment modified by mushroom bran with and without biochar improved the profit by 23.9% and 35.4%, respectively. This work reflected that the combined composting mode of chicken manure, tobacco residue, mushroom bran, and biochar is an environmentally friendly and economically feasible composting process, which is more suitable for the resource utilization of the typical organic waste in southwest China. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
Subjects
biochar
compost
life cycle assessments
mushroom bran
organic waste
tobacco residue
SDGs
Type
journal article