Preparation and Characterization of Biochars from Waste Camellia oleifera Shells by Different Thermochemical Processes
Preparation and Characterization of Biochars from Waste Camellia oleifera Shells by Different Thermochemical Processes
复制标题
不同热化学工艺废油茶壳生物炭的制备及表征
DOI：
10.1021/acs.energyfuels.7b00269
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发表时间：
2017-08-01
期刊：
影响因子：
5.3
通讯作者：
Zheng, Zhifeng
中科院分区：
文献类型：
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作者：
Fan, Fangyu;Zheng, Yunwu;Zheng, Zhifeng
废弃油茶壳具有生产可持续、清洁、绿色能源的潜力。本文采用水热炭化、焙烧和热解三种方法研究了三种类型的WCOSs生物炭的特性。采用元素分析、工业分析、疏水性、BET比表面积、X射线衍射（XRD）、扫描电子显微镜和傅里叶变换红外光谱（FTIR）对生物炭进行了分析。结果表明，生物质焦具有较高的热值，可以替代褐煤或半无烟煤。与未经处理的WCOS相比，经热化学处理后的生物炭的比表面积和疏水性均有所改善。FTIR和XRD分析表明，半纤维素和纤维素在不同条件下的热分解主要通过HTC、烘焙和热解进行，而木质素的降解主要通过热解进行。另外...
Waste Camellia oleifera shells (WCOSs) have potential to produce sustainable, clean, green energy sources. In this paper, hydrothermal carbonization (HTC), torrefaction, and pyrolysis were applied to investigate the characterization of three types of biochar from WCOSs. The biochars were analyzed with ultimate analysis, proximate analysis, hydrophobicity, Brunauer–Emmett–Teller (BET) surface area, X-ray diffraction (XRD), scanning electron microscopy, and Fourier transform infrared spectroscopy (FTIR). The results showed that the biochars were able to replace the lignite or semi-anthracite coal because of the higher calorific value. In comparison to raw WCOSs, the BET characteristics and hydrophobicity of the biochars were improved by thermochemical processes. Evolutions of WCOSs under different conditions, as determined by FTIR and XRD, showed that hemicelluloses and cellulose were decomposed through HTC, torrefaction, and pyrolysis, while the degradation of lignin occurred through pyrolysis. In addition...