| 초록 |
A desulfurization process has gained a lot of attention recently because it is extensively used in many industry fields such as petroleum, petrochemical, landfill gas (LFG), and wastewater industries to remove the sulfur. Traditionally, Claus process, a chemical desulfurization method, has been employed to both remove H2S and produce elemental sulfur, which can be further utilized for sulfuric acid, fertilizers, pesticides, batteries, polymeric materials, etc. However, a THIOPAQ® process is considered as an eco-friendly process using sulfur bacteria called Thiobacilli to convert H2S into elemental sulfur compared with the Claus process requiring high pressure and costs. In this work, we report process simulation studies using Aspen Plus® for a biological desulfurization process and parametric studies for the effect of operating conditions such as a NaOH flow rate, NaOH concentration, and H2S concentration. In addition, economic analysis was conducted for a biological desulfurization process to obtain operating and capital costs for different capacities of LFG using Aspen process economic analyzer (APEA). |
