大叶五甲底(油豆)豆荚生物质废弃物纤维素的分离、理化及BET分析

O. P. Nsude, kingsley John Orie, P. I. Udeozo, O. Ogbobe, C. Chime
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引用次数: 1

摘要

生物质系统基于广泛的原料,如食物和农业废弃物。寻找对环境无害的生物吸附剂是本研究的基本原理。因此,本研究旨在对大叶五甲底荚(Pentaclethra macrophylla Benth Pod, PMBP)生物质废弃物中纤维素的分离、理化和BET分析进行研究。粉末状PMBP用甲苯和乙醇(2:1)脱蜡,然后用次氯酸钠水溶液(70oC时7.5%)和氢氧化钠水溶液(80oC时17.5%w/v)处理,得到分离的纤维素。近似、终极和化学成分分析显示纤维素(42.7%)、半纤维素(7.8%)、木质素(38.5%)、硅(40.72%)、铝(17.10%)和元素的存在。FTIR和拉曼光谱分析揭示了与分离纤维素和原料PMBP相关的一些官能团。在分离的纤维素中存在半纤维素和木质素,这意味着分离过程没有去除所有的杂质。BET分析表明,分离的纤维素具有更好的比表面积、孔隙体积和平均孔径或大小,可以作为比原料更好的吸附剂。由于PMBP中增加的表面积和高比例的分离纤维素,它可以作为一种可持续的能源,也可以用于重金属的环境修复。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Isolation, Physicochemical and BET Analysis of Cellulose from Pentaclethra macrophylla Benth (Oil Bean) Pod Biomass Wastes
Biomass systems are based on a wide range of feedstock, like food and agricultural waste. The quest for bio-adsorbents that are environmentally benign is the rationale for this study. Thus, the research is aimed at the isolation, physicochemical, and BET analysis of cellulose obtained from Pentaclethra macrophylla Benth Pod (PMBP) biomass waste. The powdered PMBP was dewaxed with toluene and ethanol (2:1) and, thereafter, treated with aqueous sodium hypochlorite (7.5% at 70oC) and sodium hydroxide (17.5%w/v at 80oC) to obtain isolated cellulose. Proximate, ultimate, and chemical composition analysis reveals the presence of cellulose (42.7%), hemicelluloses (7.8%), lignin (38.5%), silicon (40.72%), aluminium (17.10%) and elements. The FTIR and Raman spectroscopic analysis revealed some of the functional groups associated with isolated cellulose and raw PMBP. The presence of hemicelluloses and lignin in the isolated cellulose implies that the isolation process did not remove all the impurities. The BET analysis reveals a better specific surface area, pore volume, and average pore diameter or size of the isolated cellulose, and could serve as a better adsorbent than the raw. As a result of the increased surface area and high percentage of isolated cellulose in PMBP, it can be used as a sustainable energy source as well as for the environmental remediation of heavy metals.
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