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Diversity of Microbial Communities in Biogas Reactors

机译:沼气反应器中微生物群落的多样性

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摘要

Biomethane has gained increasing attention in the recent years as an alternative, local energy source option. Biogas is generated during the anaerobic digestion of organic materials via a multistep process catalyzed by complex microbial communities. This review aims at providing a concise summary of recent studies on the microbial communities in various biogas reactors. The effects of acid composition, C/N ratio, mixing and the geometry of the anaerobic digester on the microbial ecosystem is discussed. Recent studies demonstrated the extensive fluctuations in the biogas microbial communities in response to changes in temperature, substrate type, pH, type of volatile fatty acids, organic loading rate, etc. The goals to ensure the stability of the anaerobic degradation process and to maximize the biogas production require the better understanding of these metabolic changes, since functional stability strongly correlates with the state and composition of microbial communities. The safe and controlled intensification of biogas production would be an important step to make biogas a real competitor of fossil fuels.
机译:近年来,生物甲烷作为一种替代性的本地能源选择越来越受到关注。在有机材料的厌氧消化过程中,通过复杂微生物群落催化的多步过程产生沼气。这篇综述旨在提供有关各种沼气反应器中微生物群落的最新研究的简明摘要。讨论了酸组成,C / N比,厌氧消化池的混合和几何形状对微生物生态系统的影响。最近的研究表明,随着温度,底物类型,pH,挥发性脂肪酸类型,有机负荷率等的变化,沼气微生物群落发生了广泛的波动。目标是确保厌氧降解过程的稳定性并最大程度地提高厌氧降解过程的稳定性。沼气生产需要更好地了解这些代谢变化,因为功能稳定性与微生物群落的状态和组成密切相关。安全,受控地生产沼气将是使沼气成为化石燃料的真正竞争对手的重要一步。

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