Abstract
This Special Issue contains three articles and two reviews. The biological reactors used in the studies were fed with real biogas from Landfill or STPs. One research article concerns the use of a pilot scale plant with a combined process with a chemical and biological system. The other two studies concern anoxic biotrickling filters, with one study focused on the study of variable operation and its optimization through the response surface methodology, and the other focused on the selection of packing material. The reviews concern the current state of biogas desulfurization technologies, including an economic analysis, and the microbial ecology in biofiltration units. This Issue highlights some of the most relevant aspects about biogas desulfurization.
Highlights
This Special Issue contains the invited submissions to a Special Issue of ChemEngineering on the topic “Advanced Biogas Desulfurization” [1,2,3,4,5]
Biogas is a renewable energy source produced by the biodegradation of organic matter under anaerobic conditions
The H2S concentration can range from a few ppmV (0.5–700 ppmV in landfill gas) up to more than 30,000 ppmV in the plant’s pulp-making process; and biogas flow rates can be in the range from several hundred cubic meters per hour to several thousand cubic meters per hour
Summary
This Special Issue contains the invited submissions to a Special Issue of ChemEngineering on the topic “Advanced Biogas Desulfurization” [1,2,3,4,5]. In the case of upgrading (CO2 removal) biogas can be injected into the natural gas grid or used as fuel for vehicles This wide range of biogas flow rates, H2S concentrations, types of applications and purification requirements, as well as biogas sources, results in a wide variety of technologies, which can be subdivided into those that involve physicochemical phenomena and those that involve biological processes. This Special Issue aims to bring together the scientific/technical advances on physicochemical and/or biological processes for biogas desulfurization. Biogas desulfurization is considered to be essential by many stakeholders (biogas producers, suppliers of biogas upgrading devices, gas traders, researchers, etc.) around the world, as the importance of biogas desulfurization to allow its valorization is well understood
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