利用产气肠杆菌MTCC 2822从木薯工业废渣中加氢制氢研究。

IF 2.2 4区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES
Subash Kannan Ravichandran, Blessy Silvaster, Selvakumar Rajendran, Jonathan W C Wong, Brindha Ganesan, Davidraj Johnravindar
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引用次数: 0

摘要

氢气(H2)是一种很有前途的可再生资源,从有机废物中生产氢气作为传统能源的替代品受到了广泛的关注。本文研究了在木薯工业废渣(CWR)中加入含镍(Ni)和铁(Fe)纳米颗粒(NPs)的水负载纳米颗粒(HSNPs)制氢。采用水热炭化(HTC)法制备了Ni和Fe2O3纳米粒子,并分析了它们对生物制氢的影响。结果表明,该工艺的最大产氢速率为1013 mL/gCWR,底物降解效率为80%。结果表明,添加0.5 mol Ni-Fe2O3氢炭效果最佳,累计产氢量提高41.015%,COD去除率比未添加Ni-Fe2O3氢炭提高90%。通过细菌活力来评估NPs的毒性,细菌活力检测了葡萄糖培养基中不同负载浓度的NPs。研究结果表明,在CWR的最佳范围内添加氢负载的NiO和Fe2O3 NPs可以显著提高氢的产率。此外,HSNPs还能增强氢化酶活性和电子传递效率,有利于生物h2的进化。然而,过量的HSNP添加可能对微生物有毒,并进一步抑制H2的产生。本研究提出了一种提高氢气析出速率的有效方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Hydrochar-enhanced hydrogen production from cassava industrial waste residue using Enterobacter Aerogenes MTCC 2822.

Hydrogen gas (H2) is a promising renewable resource, and its production from organic waste has gained significant attention as an alternative to traditional energy sources. This study investigates hydrogen production from cassava industry waste residue (CWR) by incorporating hydrochar-supported nanoparticles (HSNPs) containing nickel (Ni) and iron (Fe) nanoparticles (NPs). Ni and Fe2O3 NPs were synthesised through the hydrothermal carbonisation (HTC) method and analyzed for their impact on biohydrogen production. The results indicated a maximum volumetric hydrogen production rate of 1013 mL/gCWR, with a substrate degradation efficiency of 80%. Addition of 0.5 mol Ni-Fe2O3 hydrochar was found to be optimal which enhanced the overall cumulative hydrogen production by 41.015%, and higher COD removal efficiency by 90% was obtained as compared to hydrochar without additives. The toxicity of NPs was assessed through bacterial viability, which examined various loading concentrations of NPs in a glucose medium. The findings revealed that supplementing hydrochar-supported NiO and Fe2O3 NPs within an optimal range for CWR can significantly improve hydrogen productivity. Additionally, HSNPs can enhance hydrogenase activity and electron transfer efficiency, which are beneficial to bio-H2 evolution. However, excessive HSNP addition may be toxic to microbes and further inhibit H2 production. This study presents an effective method for promoting the evolution rate of H2 gas.

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来源期刊
Environmental Technology
Environmental Technology 环境科学-环境科学
CiteScore
6.50
自引率
3.60%
发文量
0
审稿时长
4 months
期刊介绍: Environmental Technology is a leading journal for the rapid publication of science and technology papers on a wide range of topics in applied environmental studies, from environmental engineering to environmental biotechnology, the circular economy, municipal and industrial wastewater management, drinking-water treatment, air- and water-pollution control, solid-waste management, industrial hygiene and associated technologies. Environmental Technology is intended to provide rapid publication of new developments in environmental technology. The journal has an international readership with a broad scientific base. Contributions will be accepted from scientists and engineers in industry, government and universities. Accepted manuscripts are generally published within four months. Please note that Environmental Technology does not publish any review papers unless for a specified special issue which is decided by the Editor. Please do submit your review papers to our sister journal Environmental Technology Reviews at http://www.tandfonline.com/toc/tetr20/current
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