Comparison Study of Biogas Upgrading Removal of H2S by Using Adsorption, Absorption and Bio-filtration Techniques
Energy is a critical need for our planet, and as the population and demand grow, it will be important to find new renewable energy sources. Biogas is a by-product of the decomposition of organic waste materials under anaerobic condition by using a digester, since all biogas streams commonly contain harmful impurities, such as Hydrogen Sulfide (H2S), a chemical compound that is widely referred to as extremely poisonous to humans, corrosive, and very flammable. This study demonstrates how to purify biogas by removing the H2S concentration. The H2S was removed by means of Absorption, Adsorption and Biological filtration unit which converts H2S into elemental Sulphur (S). These results are compared with those three H2S removal techniques and the results demonstrate that, a larger percentage age of H2S eliminated by adsorption technique have better removal efficiency (94%) the second one is Bio-trickling filter (85%) and the third one that have lowest efficiency is absorption technique (82.7%). Further research may be conducted to improve or enhance the efficiency of these techniques.
