含有鲁米纳的生物炭补充剂,以增强大米的生物甲化:专注于生物炭表征和剂量优化
Sachin Krushna Bhujbal1, Pooja Ghosh1, Virendra Kumar Vijay1
1Centre for Rural Development and Technology, Indian Institute of Technology Delhi, India.
The Science of the total environment
|September 23, 2023
概括
补充无氧消化与从反动物废物中获得的生物炭,可以显著增加从米草中的生物甲生产. 这种方法通过改善基质消化性和微生物活性来增强能量回收和废物管理.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 生物技术是生物技术.
背景情况:
- 无氧消化 (AD) 可以从农业废物中回收能量,但它面临着与林氏纤维素复合性 (lignocellulosic recalcitrance) 的挑战,限制生物甲产量.
- 已知生物炭补充剂可以提高具有挑战性的基质的消化性和生物甲化,如纤维素基材料.
研究的目的:
- 为了研究不同热解温度对生物炭性质的影响.
- 为了评估食原料含量生物炭 (RUCB) 补充剂对米的无氧消化的影响.
主要方法:
- 生物炭是从 450°C, 550°C 和 650°C 的热解温度下生产的.
- 米被 subjected to无氧消化不同百分比 (1%, 2%, 3%) 的RUCB补充剂,使用液作为注射剂.
- 监测了生物甲产量,挥发性固体 (VS) 减少,pH值和微生物生物膜的形成.
主要成果:
- 与控制反应堆相比,RUCB补充显著增加了生物甲产量,最高产量 (243.11 mL/g VS) 为2%的RUCB.
- 生物甲产量增加了1.88倍,1.76倍和1.26倍,其中RUCB补充分别为2%,1%和3%.
- 生物甲产量与VS减少有很强的正相关性 (R2 = 0.9852),归因于pH稳定和增强的微生物生物膜形成.
结论:
- 用食动物的废物来生产生物炭是一种可行的策略.
- RUCB的应用有效地增强了草的无氧消化,加速了生物甲化,增加了能量回收.
- 本研究提出了一种可持续的废物利用方法,并改进了生物气生产.
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