水热碳化替代生物质(Lepironia articulata)作为替代能源和吸附剂的评价

IF 0.1 Q4 ENGINEERING, CHEMICAL
A. Ullah
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引用次数: 0

摘要

广泛利用的湿地生物量成功地转化为固体煤样物质,称为碳氢化合物。水热炭化(HTC)是一种技术上具有吸引力的生物质在温和条件下转化为碳氢化合物的热转化工艺。通过在180、200、220、240℃和6、12、24 h范围内改变炭化温度和停留时间,研究了工艺参数对烃类物化性能和产率的影响。随着温度的升高,烃类产率从180℃时的68.8%迅速下降到240℃时的55.2%。此外,随着温度的升高,碳含量从10.28%(180℃)增加到38.69%(240℃)。H/C和O/C原子比分别从1.392和0.541降至1.072和0.271,主要与脱羧、脱甲烷和脱水反应有关。对所得烃类进行了表征,即:近似分析、TGA、HHV、FT-IR和BET。所得烃类的最高表面积(SBET)为72.2 m2/g。计算出的最大碘含量为220 mg/g。烃类的HHV范围为22.52 ~ 25.1 MJ/kg。总体结果表明,LA在环境修复、可持续和替代能源领域的有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Evaluation of hydrothermally carbonized alternative biomass (Lepironia articulata) as a source of alternative energy and adsorbent
Lepironia articulata (LA) widely available wetland biomass was successfully converted into a solid coal-like material called hydrochar. Hydrothermal carbonization (HTC) being a technically-attractive thermal conversion process of biomass into hydrochar at mild conditions was adopted in this study. The effect of process parameters on the physicochemical properties and the yield of hydrochar was studied by varying carbonization temperature and residence time over the range of 180, 200, 220, 240 oC and 6, 12, 24 h, respectively. With an increase in temperature, the hydrochar yield decreased rapidly from 68.8% at 180 oC to 55.2% at 240 oC. In addition, the increase in carbon percentage was observed with an increase in temperature from 10.28% (180 oC) to 38.69 %( 240 oC). The H/C and O/C atomic ratios reduced from 1.392 and 0.541 to 1.072 and 0.271, respectively, which was typically related to decarboxylation, demethanation, and dehydration reactions. Hydrochar obtained was characterized appropriately, i.e., proximate analysis, TGA, HHV, FT-IR and BET. The highest surface area (SBET) of hydrochar obtained was 72.2 m2/g. The maximum iodine number calculated was 220 mg/g. HHV of hydrochar was in the range of 22.52 to 25.1 MJ/kg. Overall results conclude the effectiveness of LA in the field of environmental remediation, sustainable and alternative energy.
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