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Bio- and hydrochars from rice straw and pig manure: Inter-comparison

文献类型: 外文期刊

作者: Liu, Yuxue 1 ; Yao, Shuai 3 ; Wang, Yuying 1 ; Lu, Haohao 1 ; Brar, Satinder Kaur 4 ; Yang, Shengmao 1 ;

作者机构: 1.Zhejiang Acad Agr Sci, Inst Environm Resource Soil & Fertilizer, 198 Shiqiao Rd, Hangzhou 310021, Zhejiang, Peoples R China

2.Engn Res Ctr Biochar Zhejiang Prov, Hangzhou 310021, Zhejiang, Peoples R China

3.Zhejiang Univ Technol, Coll Environm, Hangzhou 310014, Zhejiang, Peoples R China

4.Univ Quebec, INRS ETE, 490 Rue Couronne, Quebec City, PQ G1K 9A9, Canada

关键词: Biowaste;Biochar;Hydrochar;Pyrolysis;Hydrothermal carbonization

期刊名称:BIORESOURCE TECHNOLOGY ( 影响因子:9.642; 五年影响因子:9.237 )

ISSN:

年卷期:

页码:

收录情况: SCI

摘要: Conversion of rice straw (RS) and pig manure (PM) into chars is a promising disposal/recycling option. Herein, pyrolysis and hydrothermal carbonization were used to produce bio- and hydrochars from RS and PM, affording lower biochar (300-700 degrees C) and hydrochar (180-300 degrees C) yields at higher temperatures within the specified range. The C contents and C/N ratios of RS chars were higher than those of PM ones, with the opposite trend observed for yield and ash content. C and ash contents increased with increasing temperature, whereas H/C, O/C, and (O + N)/C ratios decreased. The lower H/C ratio of biochars compared to that of hydrochars indicated greater stability of the former. KCl was the main inorganic fraction in RS biochars, whereas quartz was dominant in PM biochars, and albite in PM hydrochars. Thus, RS is more suitable for carbon sequestration, while PM is more suitable for use as a soil amendment substrate. (C) 2017 Elsevier Ltd. All rights reserved.

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