Surfactant-enhanced biohydrogen production from organic fraction of municipal solid waste (OFMSW) via dry anaerobic digestion

M. Elsamadony, A. Tawfik and M. Suzuki

Applied Energy, 2015, vol. 149, issue C, 272-282

Abstract: The influence of surfactant addition on the hydrogen fermentative of the organic fraction of municipal solid waste was extensively investigated under thermophilic conditions (55±2°C) in batch cultures. The addition of Tween 80® (T80) and polyethylene glycol (PEG 6000®) substantially improved hydrogen yields (HYs) resulting in 109.9±7.1 and 113.8±7.7mlH2/gCarb.initial at T80 and PEG 6000® concentrations not exceeding 2.8% and 16.7g/L, respectively. A combination of 2.8% T80 with 1.7g/L PEG 6000® achieved slightly higher HYs of 116.7±5.2mlH2/gCarb.initial. An artificial neural network model reliably represented the relationship between the surfactant concentration and hydrogen production with a correlation coefficient (R2) of 0.980. Microbial community analysis of the batches supplemented with 2.8% T80 and 1.7g/L PEG 6000® showed the dominance of the hydrogen-producing bacteria Enterobacter, Escherichia, Buttiauxella, and Pantoea. The study confirms the potential of surfactant addition for H2 production from wastes containing organics in a particulate form.

Keywords: Hydrogen; Organic fraction of municipal solid waste; Dry anaerobic digestion; Tween 80; Polyethylene glycol 6000 (search for similar items in EconPapers)
Date: 2015
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Citations: View citations in EconPapers (12)

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DOI: 10.1016/j.apenergy.2015.03.127

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