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可持续生物质残基用于生物燃料应用的开发。

Development of sustainable biomass residues for biofuels applications.

机构信息

Institute of Energy Infrastructure (IEI), Universiti Tenaga Nasional (UNITEN), 43000, Kajang, Malaysia.

Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India.

出版信息

Sci Rep. 2023 Aug 30;13(1):14248. doi: 10.1038/s41598-023-41446-1.

DOI:10.1038/s41598-023-41446-1
PMID:37648719
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10469211/
Abstract

A comprehensive understanding of physiochemical properties, thermal degradation behavior and chemical composition is significant for biomass residues before their thermochemical conversion for energy production. In this investigation, teff straw (TS), coffee husk (CH), corn cob (CC), and sweet sorghum stalk (SSS) residues were characterized to assess their potential applications as value-added bioenergy and chemical products. The thermal degradation behavior of CC, CH, TS and SSS samples is calculated using four different heating rates. The activation energy values ranged from 81.919 to 262.238 and 85.737-212.349 kJ mol and were generated by the KAS and FWO models and aided in understanding the biomass conversion process into bio-products. The cellulose, hemicellulose, and lignin contents of CC, CH, TS, and SSS were found to be in the ranges of 31.56-41.15%, 23.9-32.02%, and 19.85-25.07%, respectively. The calorific values of the residues ranged from 17.3 to 19.7 MJ/kg, comparable to crude biomass. Scanning electron micrographs revealed agglomerated, irregular, and rough textures, with parallel lines providing nutrient and water transport pathways in all biomass samples. Energy Dispersive X-ray spectra and X-ray diffraction analysis indicated the presence of high carbonaceous material and crystalline nature. FTIR analysis identified prominent band peaks at specific wave numbers. Based on these findings, it can be concluded that these residues hold potential as energy sources for various applications, such as the textile, plastics, paints, automobile, and food additive industries.

摘要

全面了解物理化学性质、热降解行为和化学成分对于生物质残渣在进行热化学转化以生产能源之前是非常重要的。在这项研究中，对埃塞俄比亚画眉草秸秆（TS）、咖啡壳（CH）、玉米芯（CC）和甜高粱秸秆（SSS）残渣进行了特性分析，以评估它们作为增值生物能源和化工产品的潜在应用。使用四种不同的加热速率计算了 CC、CH、TS 和 SSS 样品的热降解行为。通过 KAS 和 FWO 模型计算出的活化能值范围分别为 81.919-262.238 和 85.737-212.349 kJ/mol，这些值有助于理解生物质转化为生物制品的过程。CC、CH、TS 和 SSS 的纤维素、半纤维素和木质素含量分别在 31.56-41.15%、23.9-32.02%和 19.85-25.07%之间。残渣的热值范围为 17.3-19.7 MJ/kg，与粗生物质相当。扫描电子显微镜照片显示，所有生物质样品都具有团聚的、不规则的和粗糙的纹理，平行线条提供了养分和水分的运输途径。能谱和 X 射线衍射分析表明存在高碳质材料和结晶性质。傅里叶变换红外光谱分析确定了在特定波数处存在显著的带峰。根据这些发现，可以得出结论，这些残渣具有作为各种应用的能源的潜力，例如纺织、塑料、油漆、汽车和食品添加剂行业。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/de4a/10469211/bf9959efa973/41598_2023_41446_Fig9_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/de4a/10469211/7f6e2b83fdf5/41598_2023_41446_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/de4a/10469211/ab3854297001/41598_2023_41446_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/de4a/10469211/739227478910/41598_2023_41446_Fig7a_HTML.jpg
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