Lu Zhang1, Xiangyang Sun, Yun Tian, Xiaoqiang Gong. 1. Faculty of Soil and Water Conservation, Key Laboratory of Soil and Water Conservation and Desertification Combating, Ministry of Education, Beijing Forestry University, Beijing 100083, PR China. zhanglu1211@gmail.com
Abstract
The generation of green waste is increasing rapidly with population growth in China, and green waste is commonly treated by composting. The objective of this work was to study the physical and chemical characteristics of composted green waste as affected by a two-stage composting process and by the addition of brown sugar (at 0.0%, 0.5%, and 1%) and calcium superphosphate (Ca(H2PO4)2·H2O) (at 0%, 3%, and 6%) during the second stage. With or without these additives, all the composts displayed two peaks in fermentation temperature and matured in only 30days. Compared to traditional industrial composting, the composting method described here increased the duration of high-temperature fermentation period, reduced the maturity time, and reduced costs. Addition of 0.5% brown sugar plus 6% calcium superphosphate produced the highest quality compost with respect to C/N ratio, pH, organic matter content, electrical conductivity, particle-size distribution, and other characteristics.
The generation of green waste is increasing rapidly with population growth in China, and green waste is commonly treated by composting. The objective of this work was to study the physical and chemical characteristics of composted green waste as affected by a two-stage composting process and by the addition of brown sugar (at 0.0%, 0.5%, and 1%) and n class="Chemical">calcium superphosphate (Ca(H2PO4)2·H2O) (at 0%, 3%, and 6%) during the second stage. With or without these additives, all the composts displayed two peaks in fermentation temperature and matured in only 30days. Compared to traditional industrial composting, the composting method described here increased the duration of high-temperature fermentation period, reduced the maturity time, and reduced costs. Addition of 0.5% brown sugar plus 6% calcium superphosphate produced the highest quality compost with respect to C/N ratio, pH, organic matter content, electrical conductivity, particle-size distribution, and other characteristics.
Authors: Juan Wu; Shengzhou He; Ying Liang; Guoxue Li; Song Li; Shili Chen; Faisal Nadeem; Jingwei Hu Journal: Environ Sci Pollut Res Int Date: 2017-06-11 Impact factor: 4.223
Authors: J Jara-Samaniego; M D Pérez-Murcia; M A Bustamante; C Paredes; A Pérez-Espinosa; I Gavilanes-Terán; M López; F C Marhuenda-Egea; H Brito; R Moral Journal: PLoS One Date: 2017-07-20 Impact factor: 3.240