Influence of pyrolysis temperature on biochar stability and leaching properties of nutrients contained in biochar

被引：0

作者：

Lu, Tao ^{[1
,2
,3
]}

Yuan, Haoran ^{[1
,2
]}

Wang, Yazhuo ^{[1
,2
]}

Huhetaoli ^{[1
,2
]}

Chen, Yong ^{[1
,2
]}

机构：

[1] Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, 510640, Guangdong

[2] Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou, 510640, Guangdong

[3] University of Chinese Academy of Sciences, Beijing

来源：

Huagong Xuebao/CIESC Journal | 2015年 / 66卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Biochar; Degradation; Nutritive element; Pyrolysis; Sewage sludge;

D O I：

10.11949/j.issn.0438-1157.20150253

中图分类号：

学科分类号：

摘要：

The biochar was produced from sewage sludge by pyrolysis at 300, 500 and 700 ℃. In this study the biochar degradation rate represented by CO2 release rate through alkali absorption method in microbial incubation was investigated and the half-life using a recommended prediction method was predicted. In addition, deionized water was used to investigate the content and leaching properties of the water-soluble nutrients contained in biochar. During the temperature range of 300-700℃, the biochar produced at higher temperature was degraded slowly and had longer half-life, which may exist in soil for a longer time span and then perform a better effect on carbon sequestration than that produced at lower temperature. However, biochar produced at lower temperature contained more water-soluble N and K but less water-soluble P, which was agreed with the concentration of leaching nutrients. The leaching water of biochar produced at lower temperature also contained more much water-soluble N and K but less water-soluble P. ©, 2015, Chemical Industry Press. All right reserved.

引用

页码：2664 / 2669

页数：5

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