环境工程学报2013，Vol.7Issue(3)：1133-1138,6.
热解温度和时间对生物干化污泥生物炭性质的影响
Effect of temperature and duration of pyrolysis on properties of bio-dried sludge biochar
摘要
Abstract
Converting sewage sludge to biochar is one of the potential ways for sludge recycling. However, significant differences of the yields and properties of biochar were observed due to the properties of raw materials or pyrolysis conditions. The aim of this study is to systematically investigate the effect of pyrolysis conditions, such as temperature and duration, on the properties of the bio-dried sludge biochar. The results showed that the yields of biochar decreased with the increasing the temperature and duration. Biochar produced at 300℃ was acid while it was alkaline at 700℃. The content of nitrogen in biochar was found to decrease whereas P, K and the other micronutrients increased with the increasing pyrolysis temperature or duration. The result of DTPA extraction showed that the high temperature significantly reduced the bioavalability of trace element.关键词
生物干化污泥/生物炭/热解/资源化Key words
bio-dried sludge/ biochar/ pyrolysis/ recycling分类
资源环境引用本文复制引用
程国淡,黄青,张凯松..热解温度和时间对生物干化污泥生物炭性质的影响[J].环境工程学报,2013,7(3):1133-1138,6.基金项目
科技部国际科技合作项目(2009DFB90120) （2009DFB90120）
国家"水体污染控制与治理"科技重大专项(2009ZX07317-003) （2009ZX07317-003）
