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

文献类型: 外文期刊

第一作者: Liu, Yuxue

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

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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 )

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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.

分类号: Q

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