Lab-scale biogas production from co-digestion of super-intensive shrimp sludge and potential biomass feedstocks
| Autor: | Nam TRAN, Thao HUYNH VAN, Khanh HUYNH, Luan NGUYEN, Ngan NGUYEN, Diem HUYNH, Danh DİNH, Cong NGUYEN |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Batch anaerobic digestion
Biogas production Biomass feeding Co-digestion Shrimp sludge Super-intensive shrimp cultivation Renewable Energy Sustainability and the Environment Energy Engineering and Power Technology Engineering Multidisciplinary Mühendislik Ortak Disiplinler Management Monitoring Policy and Law |
| Zdroj: | Volume: 6, Issue: 1 131-142 Journal of Energy Systems |
| ISSN: | 2602-2052 |
| Popis: | This study evaluated biogas production potentials from local biomass feedstocks comprising of rice straw (RS), steamed lemongrass (SL), bagasse (BA) and desiccated coconut (DC) on super-intensive shrimp sludge (SS) anaerobic digestion. A series of batch anaerobic digestion experiments was conducted at an organic loading rate of 50 g-VS L-1 and a C/N ratio of 25 under mesophilic conditions. The results indicate that co-digested biomass substrates are more suitable than single sludge except for DC supplementation, which exhibited a severe pH inhibition for methanogenesis activities. A reactor supplemented with BA achieved the highest overall biogas production (126.78 L kg-VSadded-1), which increased biogas yields 53.70% compared to a mono-sludge reactor. Furthermore, reactors with RS and SL increased biogas yields by 26.40% and 29.21%, respectively. Irrespective of initial materials, the H2S concentration in biogas compositions was measured at very high levels (23,710 - 65,040 ppm) after 10-15 days of digestion, while a decreasing trend was recorded for the remaining digestion period (16 - 60 days), yet still maintained relatively high levels (5,873 - 9,155 ppm). The study suggests that future works should focus on pH neutralization within the reactor with DC substrates and H2S removal in biogas composition. |
| Databáze: | OpenAIRE |
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