Biodesulfurization of Consortia Immobilized on Oil Palm Frond Biochar in Biotrickling Filters under Anoxic Conditions

Biodesulfurization using biotrickling filters (BTFs) under anoxic conditions is a cost-effective method for biogas clean-up. To improve the performance of BTFs, microbial consortia from anaerobic pond swine farm (SW), denitrification tuna factory (DN), and UASB concentrated latex industry (LW) were immobilized on BTFs. In this study, efficiency BTFs with reduction H2S gas combined nitrate contained in wastewater was investigated. The results showed that completely removed at inlet concentration 207.8–1476 ppmv circulation conditions. However, only DN-BTF achieved removal 95.2% an 2500 ppmv. An increase N/S ratio (0.356–2.07 mol/mol) improved SW-BTF, LW-BTF, but not BTF-C. Moreover, had highest rate (71.1%) 2.07 mol/mol. When oxygen supplied DO = 3.60 ± 0.41 mg/L, sulfate generated higher rate, nitrite production lower than DO~0. After community analysis, Proteobacteria main phyla involved biodesulfurization process.