水生松茸生物质缓慢热解制炭的动力学评价

IF 2.1 4区工程技术 Q3 ENERGY & FUELS

Biofuels-Uk Pub Date : 2023-10-16 DOI:10.1080/17597269.2023.2269735

J. S. Nascimento, E. R. Camelo, M. S. Carvalho, C. F. Virgens

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引用次数: 0

摘要

摘要人类活动引起的气候突变加剧了人们对可持续能源的探索，以减少对化石燃料的依赖。本研究采用多变量研究设计，在间歇式反应器系统中确定了Pachira aquatica Aubl果皮缓慢热解的工艺变量和动力学参数对生物炭生成的影响。运用Box Behnken规划模型的统计评价，对模型进行了较好的调整，建立了描述变量行为显著效应的模型。在氮气气氛下，温度(T) = 406°C，升温速率β = 2°C min - 1，停留时间tR = 60 min，生物炭产率最高(41.22%)。温度对工艺的影响最大，其次是加热速率，其余工艺变量的个体影响不显著。将所得经验模型应用于质量变化方程，计算出活化能(Ea)=77.10 kJ mol−1，频率因子(A0)= 6.28 × 1010 s−1。最大产炭区活化能较低，显示了水果皮热转化为生物炭的巨大潜力。致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢披露声明作者未报告潜在的利益冲突。数据可用性声明支持本研究结果的数据可根据合理要求从通讯作者Virgens, c.f.处获得。其他信息fundingfapesb和Capes是巴西著名的宣传机构。Fapesb通过基础设施赠款CNV.0076/2013(项目10.13039/501100006181)提供了财政支持，而Capes慷慨地向Juraci Nascimento和Mateus Carvalho颁发了硕士奖学金。

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Kinetic evaluation of Pachira aquatica Aubl biomass slow pyrolysis towards to biochar production

AbstractThe abrupt climate change, caused by the anthropogenic activities in the environment, intensified the search for sustainable sources of energy aiming reduce the dependence on fossil fuels. In this study, a multivariate study design was applied within a batch reactor system to determine the influence of process variables and kinetic parameters of slow pyrolysis of Pachira aquatica Aubl fruit peel towards biochar generation. The statistical evaluation of Box Behnken planning model was applied and showed good adjustment to the model establishing the model that describes the significant effect of variables behavior. The maximum biochar yield (41.22%) was observed were temperature (T) = 406 °C, heating rate β = 2 °C min−1, and residence time tR = 60 min, under nitrogen atmosphere. It is also observed that temperature was the most substantial influence on the process, followed by heating rate and the remaining process variables did not exhibit significant individual effects. The empirical model obtained was applied into mass change equation aiming calculate the activation energy (Ea)=77.10 kJ mol−1 and frequency factor (A0)= 6.28 × 1010 s−1. The low activation energy in maximum biochar yield region showed a great potential of Pachira aquatica Aubl fruit peel thermoconversion towards to biochar.Keywords: Biocharslow pyrolysiskineticsbiomassactivation energy AcknowledgmentsThe authors would like to thank Fundação de Amparo à Pesquisa do Estado da Bahia (FAPESB) for financing of the experimental pyrolysis unit (PLANT π/DCET-UNEB) through the agreement CNV.0076/2013, and Coordenação de aperfeicoamento de pessoal de nivel superior (CAPES) for financial support.Disclosure statementNo potential conflict of interest was reported by the authors.Data availability statementThe data that support the findings of this study are available from the corresponding author, Virgens, C.F., upon reasonable request.Additional informationFundingFapesb and Capes are prominent Brazilian fomentation agencies. Fapesb provided financial support through infrastructure grant CNV.0076/2013 (Project 10.13039/501100006181), while Capes generously awarded master’s scholarships to Juraci Nascimento and Mateus Carvalho.

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来源期刊

Biofuels-Uk Energy-Renewable Energy, Sustainability and the Environment

CiteScore

5.40

自引率

9.50%

发文量

期刊介绍： Current energy systems need a vast transformation to meet the key demands of the 21st century: reduced environmental impact, economic viability and efficiency. An essential part of this energy revolution is bioenergy. The movement towards widespread implementation of first generation biofuels is still in its infancy, requiring continued evaluation and improvement to be fully realised. Problems with current bioenergy strategies, for example competition over land use for food crops, do not yet have satisfactory solutions. The second generation of biofuels, based around cellulosic ethanol, are now in development and are opening up new possibilities for future energy generation. Recent advances in genetics have pioneered research into designer fuels and sources such as algae have been revealed as untapped bioenergy resources. As global energy requirements change and grow, it is crucial that all aspects of the bioenergy production process are streamlined and improved, from the design of more efficient biorefineries to research into biohydrogen as an energy carrier. Current energy infrastructures need to be adapted and changed to fulfil the promises of biomass for power generation. Biofuels provides a forum for all stakeholders in the bioenergy sector, featuring review articles, original research, commentaries, news, research and development spotlights, interviews with key opinion leaders and much more, with a view to establishing an international community of bioenergy communication. As biofuel research continues at an unprecedented rate, the development of new feedstocks and improvements in bioenergy production processes provide the key to the transformation of biomass into a global energy resource. With the twin threats of climate change and depleted fossil fuel reserves looming, it is vitally important that research communities are mobilized to fully realize the potential of bioenergy.