UASFF start-up for biohydrogen and biomethane production from treatment of Palm Oil Mill Effluent. (2nd August 2019)

• Record Type: Journal Article
• Authors: Zainal, Bidattul Syirat; Akhbari, Azam; Zinatizadeh, Ali Akbar; Mohammadi, Parviz; Danaee, Mahmoud; Mohd, Nuruol Syuhadaa; Ibrahim, Shaliza
• Is Part Of: International journal of hydrogen energy. Volume 44:Number 37(2019)
• Page Start: 20725
• Page End: 20737
• Publication Date: 2019-08-02
• Subjects: Biohydrogen -- Biomethane -- Palm Oil Mill Effluent -- UASFF; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2018.07.037
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: A start-up study was conducted to produce biohydrogen and biomethane from Palm Oil Mill Effluent (POME) using a two-stage up-flow anaerobic sludge fixed-film (UASFF) bioreactor. 100% molasses was used to start the system, and POME was added at 10% increments until it reached 100% after 59 days. During this period of continuous operation, the HRT and temperature were adjusted in order to optimize the condition for biogas production. Hydrogen and methane gas production fluctuated between 53–70% and 90–95%, respectively, in the last four days of operation (days 56–59), with POME percentage being increased from 70% to 100% (30%–0% molasses). Using 100% raw POME led to a total COD removal of 83.70%, average gas production rates of 5.29 L H2 d −1 (57.11% H2 ) and 9.60 L CH4 d −1 (94.08% CH4 ), in their respective units. This output is comparable to, if not better than using 100% molasses as substrate. This work concludes that based on the relative consistency of biogas production on days 56–59, the two-stage UASFF bioreactor operating at a final HRT of 4 h and temperature of 43 °C has taken a period of two months for start-up. Graphical abstract: Image 1 Highlights: A total COD removal efficiency of 83.70% was achieved using raw POME in two-stage UASFF reactor. Short-term and stable H2 and CH4 production were established in thermophilic UASFF bioreactor. Highest H2 percentage and HPR was 57.11% and 5.29 L d −1 using 100% raw POME. Highest CH4 percentage and MPR was 94.08% and 9.60 L d −1 using 100% raw POME.