Removal of H2S from Rich Solution in Absorption Process by Utilizing Thiobacillus.sp

Abstract

The content of hydrogen sulphide in the rich solution from absorption process is a contaminant type toxic and hazardous waste which has negative impact on the environment. This study aims to reduce H 2 S in rich solution by utilizing Thiobacillus sp . The utilization of Thiobacillus sp was carried out at ambient temperature, pH ranging from 8.5 to 9.3, facultative aeration with variations in initial H 2 S concentrations (1,000, 2,000 and 3,000 ppm) and an initial microbial to H2S solution (1:5, 1:3 and 1:1). H 2 S concentration analysis was performed to determine the efficiency of H2S reduction by using iodometric titration method. Analysis of total solids (TS), volatile solids (VS), total suspended solids (TSS), volatile suspended solids (VSS), chemical oxygen demand (COD), pH, and M-Alkalinity were performed to determine water quality resulted from the reduction by Thiobacillus sp . The highest H 2 S reduction efficiency by Thiobacillus sp at 70% was obtained by initial H 2 S concentrations of 3,000 ppm and the initial microbial ratio of H 2 at 1: 3 solution with TS, VS, TSS, VSS, COD, pH and Alkalinity values were 5,040 mg/L, 2.420 mg/L, 1.030 mg/L, 690 mg/L, 126 mg/L, 8.1 - 9.6, and 750 mg/L respectively.

Access to Document

Other files and links

• Link to publication in Scopus
• Open Access Version Available

Fingerprint