Optimizing the grass bio methanation in lab scale reactor utilizing response surface methodology

IF 2.1 4区工程技术 Q3 ENERGY & FUELS

Biofuels-Uk Pub Date : 2023-01-28 DOI:10.1080/17597269.2023.2170034

Harshal Warade, K. Ansari, Kul Bhaskar, Zeba Naaz, Mohammad Amir Khan, N. Khan, S. Zahmatkesh, M. Hajiaghaei-Keshteli

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引用次数: 8

Abstract

Abstract Assessment of biogas production from Napier Grass (NG) in co-digestion with cattle dung (CD) was carried out in laboratory scale reactors and optimization using response surface methodology (RSM) and Box-Behnken design of the experiment. The effects of total alkalinity (TA), volatile solids (VS), pH, and volatile fatty acids (VFA) at three levels were investigated along with gas production. In this study, we determined the optimal ratio for biogas generation from NG and CD co-digestion. The three blending ratios were adopted as NG:CD (50:50), NG:CD (65:35), and NG:CD (75:25). The optimized result revealed that the highest generation of biogas was achieved at the blending ratio NG: CD (65:35) up to 0.4813 m3/kg VS. However, the significant value of R2 (0.9825) during RSM optimization highlighted that, the model might be effectively used to forecast the generation of biogas from the blending of CD and NG. The result shows that TA, VS, pH and VFA are essential for biogas production and the model algorithm could be applied extensively to estimate biogas generation from the co-blending of various organic biomasses. There is a good correlation between each parameter and the overall generation of biogas in the ANOVA results.

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响应面法优化实验室规模反应器中的草生物甲烷化反应

摘要采用实验室规模反应器对纳皮草(NG)与牛粪(CD)共消化产气量进行了评价，并采用响应面法(RSM)和Box-Behnken设计对试验进行了优化。考察了总碱度(TA)、挥发性固形物(VS)、pH和挥发性脂肪酸(VFA)在三个水平上对产气的影响。在本研究中，我们确定了NG和CD共消化产沼气的最佳比例。三种配比分别为:NG:CD(50:50)、NG:CD(65:35)和NG:CD(75:25)。优化结果表明，当混合比例为NG: CD(65:35)为0.4813 m3/kg时，沼气产生量最高，但RSM优化时R2(0.9825)的显著值表明，该模型可以有效地用于预测CD与NG混合的沼气产生量。结果表明，TA、VS、pH和VFA是产生沼气的必要条件，该模型算法可广泛应用于估算各种有机生物质共混产生的沼气。在方差分析结果中，每个参数与沼气的总体生成之间存在良好的相关性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.