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.
| Original language | English |
|---|---|
| Pages (from-to) | 272-282 |
| Number of pages | 11 |
| Journal | Applied Energy |
| Volume | 149 |
| DOIs | |
| State | Published - 1 Jul 2015 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2015 Elsevier Ltd.
Keywords
- Dry anaerobic digestion
- Hydrogen
- Organic fraction of municipal solid waste
- Polyethylene glycol 6000
- Tween 80
ASJC Scopus subject areas
- Building and Construction
- Renewable Energy, Sustainability and the Environment
- Mechanical Engineering
- General Energy
- Management, Monitoring, Policy and Law