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通过热解、动力学、热力学参数以及衍生气体的 TG-FTIR-MS 研究评估满江红的生物能源潜力。

Bioenergy potential of Wolffia arrhiza appraised through pyrolysis, kinetics, thermodynamics parameters and TG-FTIR-MS study of the evolved gases.

机构信息

Bioenergy Research Center, Department of Bioinformatics and Biotechnology, Government College University Faisalabad, Faisalabad 38000, Pakistan.

College of Bioengineering, Sichuan University of Science and Engineering, Zigong 643000, China; Bioenergy Research Center, Department of Bioinformatics and Biotechnology, Government College University Faisalabad, Faisalabad 38000, Pakistan.

出版信息

Bioresour Technol. 2018 Apr;253:297-303. doi: 10.1016/j.biortech.2018.01.033. Epub 2018 Jan 13.

DOI:10.1016/j.biortech.2018.01.033
PMID:29413995
Abstract

This study evaluated the bioenergy potential of Wolffia arrhiza via pyrolysis. The biomass was collected from the pond receiving city wastewater. Oven dried powdered biomass was exposed to thermal degradation at three heating rates (10, 30 and 50° C min) using Thermogravimetry-Differential Scanning Calorimetry analyzer in an inert environment. Data obtained were subjected to the isoconversional models of Kissenger-Akahira-Sunose (KSA) and Flynn-Wall-Ozawa (FWO) to elucidate the reaction chemistry. Kinetic parameters including, E (136-172 kJmol) and Gibb's free energy (171 kJmol) showed the remarkable bioenergy potential of the biomass. The average enthalpies indicated that the product formation is favored during pyrolysis. Advanced coupled TG-FTIR-MS analyses showed the evolved gases to contain the compounds containing CO functional groups (aldehydes, ketones), aromatic and aliphatic hydrocarbons as major pyrolytic products. This low-cost abundant biomass may be used to produce energy and chemicals in a cost-efficient and environmentally friendly way.

摘要

本研究通过热解评估了无根萍的生物能源潜力。生物量是从接收城市废水的池塘中收集的。在惰性环境中,使用热重-差示扫描量热分析仪,将在烘箱中干燥并研磨成粉末的生物质在三种加热速率(10、30 和 50°C/min)下进行热降解。对获得的数据进行 Kissenger-Akahira-Sunose (KSA) 和 Flynn-Wall-Ozawa (FWO) 的等转化率模型处理,以阐明反应化学。动力学参数包括 E(136-172 kJmol)和吉布斯自由能(171 kJmol)表明生物质具有显著的生物能源潜力。平均焓值表明,在热解过程中有利于产物的形成。先进的耦合 TG-FTIR-MS 分析表明,释放的气体中含有含有 CO 官能团(醛、酮)、芳香烃和脂肪烃的化合物,这些是主要的热解产物。这种低成本、丰富的生物质可以以经济高效和环保的方式用于生产能源和化学品。

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