National University of Ireland Galway, University Road, H91 TK33, Galway, Ireland; Bangladesh Council of Scientific and Industrial Research (BCSIR), BCSIR Laboratories Chattogram, Chattogram, 4220, Bangladesh.
National University of Ireland Galway, University Road, H91 TK33, Galway, Ireland.
J Environ Manage. 2022 Feb 15;304:114198. doi: 10.1016/j.jenvman.2021.114198. Epub 2021 Dec 1.
Raw biogas generated in the anaerobic digestion (AD) process contains several undesired constituents such as HS, CO, NH, siloxanes and VOCs. These gases affect the direct application of biogas, and are a prime concern in biogas utilization processes. Conventional physico-chemical biogas purification methods are energy-intensive and expensive. To promote sustainable development and environmental friendly technologies, biological biogas purification technologies can be applied. This review describes biological technologies for both upstream and downstream processing in terms of pollutant removal mechanisms and efficiency, bioreactor configurations and different operating conditions. Limitations of the biological approaches and their future scope are also highlighted. A conceptual framework Driver-Pressure-Stress-Impact-Response (DPSIR) and Strengths-Weaknesses-Opportunities-Threats (SWOT) analysis have been applied to analyse the present situation and future scope of biological biogas clean-up technologies.
厌氧消化（AD）过程中产生的 raw biogas 含有多种不理想的成分，如 HS、CO、NH、硅氧烷和 VOCs。这些气体影响了 biogas 的直接应用，是沼气利用过程中的主要关注点。传统的理化沼气净化方法能耗高且成本高。为了促进可持续发展和环保技术，可以应用生物沼气净化技术。本综述从污染物去除机制和效率、生物反应器配置和不同操作条件等方面描述了上游和下游处理的生物技术。还强调了生物方法的局限性及其未来的范围。已经应用了概念框架 Driver-Pressure-Stress-Impact-Response (DPSIR) 和 Strengths-Weaknesses-Opportunities-Threats (SWOT) 分析来分析生物沼气净化技术的现状和未来范围。
