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Bioenergy potential of Wolffia arrhiza appraised through pyrolysis, kinetics, thermodynamics parameters and TG-FTIR-MS study of the evolved gases
Bioresource Technology ( IF 11.4 ) Pub Date : 2018-01-13 , DOI: 10.1016/j.biortech.2018.01.033
Muhammad Sajjad Ahmad , Muhammad Aamer Mehmood , Chen-Guang Liu , Abdul Tawab , Feng-Wu Bai , Chularat Sakdaronnarong , Jianren Xu , Sawsan Abdulaziz Rahimuddin , Munazza Gull

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−1) 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, Ea (136–172 kJmol−1) and Gibb’s free energy (171 kJmol−1) 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.



中文翻译:

通过热解,动力学,热力学参数以及所产生气体的TG-FTIR-MS研究评估了太白的生物能潜力

这项研究通过热解评估了白僵菌的生物能源潜力。从接收城市废水的池塘收集生物质。烤箱干燥的粉状生物质在惰性环境中使用热重分析-差示扫描量热分析仪以三种加热速率(10、30和50°C min -1)暴露于热降解。对获得的数据进行了基辛格-赤平-Sunose(KSA)和Flynn-Wall-Ozawa(FWO)的同质转化模型,以阐明反应化学。动力学参数包括E a(136–172 kJmol -1)和吉布的自由能(171 kJmol -1)显示了生物质的显着生物能源潜力。平均焓表明在热解过程中有利于产物形成。先进的TG-FTIR-MS耦合分析显示,逸出的气体中含有作为主要热解产物的化合物,这些化合物包含C O官能团(醛,酮),芳族和脂族烃。这种低成本丰富的生物质可用于以经济高效且环保的方式生产能源和化学品。

更新日期:2018-01-13
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