With the increased use of biogas generated from anaerobic digestion (AD) as a source of renewable energy, economical methods of cleaning and upgrading the gas are of growing importance. The removal of hydrogen sulfide to varying degrees is required regardless of the end biogas use, as the presence of hydrogen sulfide contributes to operations and maintenance costs and reduction in the life of gas handling equipment. Micro-aeration, or the injection of small amounts of oxygen, into anaerobic digesters has been shown to affect reduction in gaseous hydrogen sulfide concentrations and is more economical than typical sulfide scrubbing systems. This review examines the existing data on micro-aeration applications, including biological kinetics and appropriate control strategies for full-scale micro-aeration applications. Knowledge gaps in research are also noted.

随着厌氧消化（AD）产生的沼气作为可再生能源的使用增加，清洁和升级气体的经济方法变得越来越重要。无论最终使用何种沼气，都需要不同程度地去除硫化氢，因为硫化氢的存在会增加运营和维护成本，并缩短气体处理设备的使用寿命。微曝气或向厌氧消化器中注入少量氧气已被证明会影响气态硫化氢浓度的降低，并且比典型的硫化物洗涤系统更经济。本综述检查了有关微曝气应用的现有数据，包括生物动力学和全面微曝气应用的适当控制策略。