| Title |
Enhancing biogas production from cattle manure: A circular economy approach with solar thermal pretreatment and soil conditioning |
| ID_Doc |
28835 |
| Authors |
Samadamaeng, N; Sawatdeenarunat, C; Charnnok, B |
| Title |
Enhancing biogas production from cattle manure: A circular economy approach with solar thermal pretreatment and soil conditioning |
| Year |
2024 |
| Published |
|
| DOI |
10.1016/j.jenvman.2024.122086 |
| Abstract |
Biogas production from cattle manure, pivotal for sustainable waste and energy management, encounters challenges from its low digestibility linked to lignocellulosic structures. This study investigates biogas efficiency enhancement through anaerobic digestion coupled with solar thermal (ST) pretreatment and digestate application in Napier grass cultivation (STAD-G). ST pretreatment at 40-60 degrees C for 20 h markedly increases methane yield, validated by pilot-scale trials that exhibited a 3.9-fold surge in methane production, attributed to improved acidification. Untreated manure's structure, however, impedes acidification, slowing methanogenesis as shown by lower volatile fatty acid concentration in effluents. In addition, utilizing digestate as soil conditioner notably improves grass yield (19.3 +/- 0.8 ton dry/ha/year) and protein content, akin to urea fertilizer. Furthermore, the STAD-G system incurs higher upfront costs, it yields superior biogas efficiency and enhanced long-term financial returns. This integrated approach, by boosting economic and environmental sustainability, advocates for ST pretreatment as a key strategy in advancing sustainable agriculture and energy solutions. |
| Author Keywords |
Solar thermal pretreatment; Anaerobic digestion; Soil conditioner; Cattle manure management; Circular economy |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:001291785200001 |
| WoS Category |
Environmental Sciences |
| Research Area |
Environmental Sciences & Ecology |
| PDF |
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