Effects of volatile fatty acids in biohydrogen effluent on biohythane production from palm oil mill effluent under thermophilic condition

• DOI: 10.1016/j.ejbt.2017.07.006
• Publication Date: 2017-08-05T10:31:55Z
• Authors: Chonticha Mamimin; Poonsuk Prasertsan; Prawit Kongjan; Sompong O-Thong
• Keywords: Biohythane; QH301-705.5; 0211 other engineering and technologies; POME hydrogenic effluent; 02 engineering and technology; Microbial fermentation from organic waste; Methanogenesis; 6. Clean water; Effluent; 13. Climate action; Acid; Hydrogen production; Thermophilic methane production; Archae community analysis; Biology (General); Methane; Microbial community analysis; TP248.13-248.65; Biotechnology

Biohydrogen effluent contains a high concentration of volatile fatty acid (VFA) mainly as butyric, acetic, lactic and propionic acids. The presence various VFAs (mixture VFAs) their cooperative effects on two-stage biohythane production need to be further studied. effect VFA concentrations in biohydrogen palm oil mill (POME) methane yield stage was investigated. obtained low loading (0.9 1.8 g/L) 15–20% times greater than that (3.6 4.7 g/L). Butyric at (8 has the individual significantly negative process (P < 0.05). Lactic, acetic butyric mixed with higher 0.5 g/L an interaction methanogenesis Inhibition condition had both bacteria archaea inhibited Geobacillus sp., Thermoanaerobacterium thermosaccharolyticum, Methanoculleus thermophilus Methanothermobacter delfuvii resulting yield. Preventing acid, hydrogenic could enhance anaerobic digestion for production.