农业环境科学学报2018，Vol.37Issue(3)：567-575,9.DOI:10.11654/jaes.2017-1229
生物质炭对城市污泥堆肥温室气体排放的影响
Influences of biochar on greenhouse gas emissions during municipal sludge composting
摘要
Abstract
Effects of biochar on greenhouse gas emissions were investigated by analyzing the dynamic characteristics of municipal sludge composting with and without biochar.The results showed that adding biochar increased the pile temperature,extended the altithermal tem-perature period,increased the decomposition rate of the composting pile,and reduced total carbon(TC),total organic carbon(TOC),and ni-trogen loss(especially for NH+4-N).The TC,TOC,and total nitrogen(TN)levels showed significant differences(P<0.05)between the two treatments.CH4emissions mainly occurred during the altithermal temperature period and cooling phase in both the treatments,accounting for 76.40%~82.40% of the total emissions.Biochar increased the CH4emissions,but this increase was non-significant compared with com-posting without biochar.CO2emissions were primarily concentrated in the altithermal temperature period and cooling phase,accounting for 78.77%~78.83% of the total CO2emissions.Unlike CH4emissions,biochar reduced CO2emissions.In addition,over 84% N2O emissions oc-curred in the rotten period.Biochar significantly reduced the N2O emissions,which were 18.94% lower than the treatment without biochar. CO2emission equivalents of dry sludge were estimated to be 60.21 and 67.19 kg·t-1in the with and without biochar treatments,respectively. The significant reduction in greenhouse gas emissions of 10.39% in the biochar treatment indicated that adding biochar reduced the green-house effect during sludge composting.关键词
城市污泥/堆肥/温室气体/生物质炭/排放特征Key words
municipal sludge/composting/greenhouse gas/biochar/emission characteristics分类
资源环境引用本文复制引用
杨雨浛,易建婷,任小玉,蒋越,陈宏,张成..生物质炭对城市污泥堆肥温室气体排放的影响[J].农业环境科学学报,2018,37(3):567-575,9.基金项目
国家自然科学基金项目(51208426)Project supported:The National Science Foundation of China(51208426) （51208426）
