Biogas produced through anaerobic digestion not only produces methane but also other gases in small amounts such as hydrogen sulfide, nitrogen and CO2. Hydrogen sulfide should be removed from the gas before upgrading to prevent corrosion.
Depending on the specifications for RNG, excess nitrogen needs to be removed using suitable techniques. Different types of H2S removal techniques are followed that include biological removal, use of air injection, membrane separation, and adsorption.
Innovations to increase the efficiency and decrease costs of these systems could enhance the overall profitability of the biogas and RNG plant.
01-01-2020
Source: NM-AIST
01-02-2019
Source: Universiti Kebangsaan Malaysia
Core sciences & engineering
Corporate researcher
Chemicals