Research and Scientific Studies Unit, College of Nursing and Allied Health Sciences, Jazan University, Jazan, 45142, Saudi Arabia.
Department of Environmental Studies, Satyawati College, University of Delhi, Delhi, 110052, India.
Chemosphere. 2022 Nov;307(Pt 4):136120. doi: 10.1016/j.chemosphere.2022.136120. Epub 2022 Aug 19.
Continuously increasing wastes management issues and the high demand of fuels to fulfill the current societal requirements is not satisfactory. In addition, severe environmental pollution caused by generated wastes and the massive consumption of fossil fuels are the main causes of global warming. In this scenario, production of hydrogen from organic wastes is a potential and one of the most feasible alternatives to resolve these issues. However, sensitivity of H production at higher temperature and lack of potential substrates are the main issues which are strongly associated with such kinds of biofuels. Therefore, the present review is targeted towards the evaluation and enhancement of thermophilic biohydrogen production using organic, cellulosic wastes as promising bioresources. This review discusses about the current status, development in the area of thermophilic biohydrogen production wherein organic wastes as key substrate are being employed. The combinations of suitable organic and cellulose rich substrates, thermo-tolerant microbes, high enzymes stability may support to enhance the biohydrogen production, significantly. Further, various factors which may significantly contribute to enhance biohydrogen production have been discussed thoroughly in reference to the thermophilic biohydrogen production technology. Additionally, existing obstacles such as unfavorable thermophilic biohydrogen pathways, inefficiency of thermophilic microbiomes, genetic modifications, enzymes stability have been discussed in context to the possible limitations of thermophilic biohydrogen production strategy. Structural and functional microbiome analysis, fermentation pathway modifications via genetic engineering and the application of nanotechnology to enhance the thermophilic biohydrogen production have been discussed as the future prospective.
不断增加的废物管理问题和满足当前社会需求的燃料高需求并不令人满意。此外，废物产生的严重环境污染和化石燃料的大量消耗是全球变暖的主要原因。在这种情况下，从有机废物中生产氢气是一种潜在的、最可行的替代方案之一，可以解决这些问题。然而，高温下 H 生产的敏感性和潜在底物的缺乏是与这类生物燃料密切相关的主要问题。因此，本综述旨在评估和提高使用有机、纤维素废物作为有前途的生物资源的高温生物制氢。本文综述了目前利用有机废物作为关键底物的高温生物制氢的现状和发展。合适的有机和富含纤维素的底物的组合、耐热微生物、高酶稳定性可以显著提高生物制氢的产量。此外，还详细讨论了可能显著有助于提高生物制氢的各种因素，参考了高温生物制氢技术。此外，还讨论了存在的障碍，如不利的高温生物制氢途径、高温微生物群落的效率低下、遗传修饰、酶稳定性，以了解高温生物制氢策略的可能限制。结构和功能微生物组分析、通过遗传工程修改发酵途径以及应用纳米技术来提高高温生物制氢的产量，被认为是未来的前景。
