Conversion of sweet potato waste to solid fuel via hydrothermal carbonization

被引：176

作者：

Chen, Xinfei ^{[1
]}

Ma, Xiaoqian ^{[1
]}

Peng, Xiaowei ^{[1
]}

Lin, Yousheng ^{[1
]}

Yao, Zhongliang ^{[1
]}

机构：

[1] South China Univ Technol, Guangdong Prov Key Lab Efficient & Clean Energy U, Guangzhou 510640, Guangdong, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2018年 / 249卷

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Hydrothermal carbonization; Sweet potato waste; Hydrochars; Chemical composition; Kinetics; COMBUSTION CHARACTERISTICS; TREATMENT TEMPERATURE; PYROLYSIS BEHAVIORS; BIOFUEL PRODUCTION; BIOMASS; HYDROCHAR; WATER; LIGNIN; PRODUCTS; BIOCHAR;

D O I：

10.1016/j.biortech.2017.10.096

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Hydrothermal carbonization (HTC) of sweet potato waste was performed to investigate the effect of process parameters including reaction temperature (180-300 degrees C) and residence time (0-120 min) on the characteristics of hydrochars. The results showed that the increase of reaction temperature and residence time both decreased the yield of hydrochars. With the increase of reaction temperature and residence time, the carbon content of hydrochars increased, while the hydrogen and oxygen contents decreased. The lower H/C and O/C ratios indicated that dehydration and decarboxylation reactions occurred during HTC. The occurrence of aromatization reaction was found in FTIR spectra. Thus, the fixed carbon content, higher heating value, and energy density of hydrochars increased. SEM analysis indicated that HTC developed rough surface with crack on the hydrochars. The thermogravimetric experiments displayed the increase trend in combustion ignition temperature, burnout temperature and activation energy as reaction temperature and time increase, which showed better combustion characteristics.

引用

页码：900 / 907

页数：8

共 40 条

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