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Evaluation of Physiochemical, Thermal and Kinetic Properties of Wheat Straw by Demineralising with Leaching Reagents for Energy Applications
Energy ( IF 9.0 ) Pub Date : 2021-09-14 , DOI: 10.1016/j.energy.2021.122013
Muhammad Hamid Siddiqi 1 , Xiao-min Liu 1 , Muhammad Asif Hussain 2 , Tayyab Qureshi 3, 4 , Asif Nadeem Tabish 5 , Hafiz Umair Lateef 6 , Hassan Zeb 7 , Muhammad Farooq 4 , Saba Nawaz 1 , Saher Nawaz 8
Affiliation  

The augmented concerns towards greenhouse emissions have stimulated the innovative technologies to reduce the carbon footprints and lessen the usage of fossil fuel by replacing them with biomass. Wheat straw is a biowaste and has a great potential for energy-production. However, the inorganic contents in the wheat straw cause operational problems such as low heat transfer and ash-deposition in combustion chamber leading to high maintenance requirements. Demineralization of wheat straw with various basic and acidic leaching reagents (NaOH, HCl, HNO3) was investigated in this study. The concentrations of leachants was varied from 0.6, 0.4 and 0.2M to study their effect on physical, chemical, thermal and kinetic behavior of the biomass. The 0.6 M HCl solution reduced the maximum ash content up to 92.71% and raised the heating value to 3.98% than raw wheat straw. The kinetic study of the samples treated with 0.6M HCl demonstrated the superior ignition and the activation-energy than other samples. On other hand NaOH damaged the structure of the wheat straw and had adverse effects on their physical and chemical properties. The results of the current study suggested that HCl treated wheat straw can provide a cost effective and eco-friendly solution for energy generation.



中文翻译:

用能源应用浸出剂脱矿对小麦秸秆的理化、热和动力学特性的评价

对温室气体排放的日益关注刺激了创新技术,以减少碳足迹并通过用生物质替代化石燃料来减少化石燃料的使用。小麦秸秆是一种生物垃圾,具有巨大的能源生产潜力。然而,小麦秸秆中的无机成分会导致燃烧室传热低和积灰等操作问题,从而导致高维护要求。用各种碱性和酸性浸出剂(NaOH、HCl、HNO 3) 在这项研究中进行了调查。浸出剂的浓度从 0.6、0.4 和 0.2M 不等,以研究它们对生物质的物理、化学、热和动力学行为的影响。0.6 M HCl 溶液将最大灰分含量降低到92.71%,热值比生麦秸提高到3.98%。用 0.6M HCl 处理的样品的动力学研究证明了比其他样品优越的点火和活化能。另一方面,NaOH 会破坏麦秆的结构,对其理化性质产生不利影响。目前的研究结果表明,用 HCl 处理过的麦秸可以为能源生产提供一种具有成本效益和环保的解决方案。

更新日期:2021-09-14
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