School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Wuxi 214122, China; Jiangsu Collaborative Innovation Center of Water Treatment Technology and Material, Suzhou 215011, China.
School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China.
Bioresour Technol. 2019 Jan;272:194-201. doi: 10.1016/j.biortech.2018.10.004. Epub 2018 Oct 4.
This study investigated the feasibility and performance of simultaneous in-situ CO sequestration and CH production promotion by wollastonite addition in sludge AD. A maximum CH yield increment of 30.8% and maximum methane production rate increment of 64.9% with wollastonite addition at dosage of 16.25 g/L were achieved. CO was efficient sequestered by wollastonite addition and resulted in a higher CH content of 81.7%-82.4%. The mechanism of CO sequestration by wollastonite was confirmed as Ca release and subsequently carbonation based on cation and precipitates analysis. The results demonstrated that wollastonite could be applied as an effective additive for simultaneous in-situ CO sequestration and CH production promotion of sludge AD.
本研究探讨了添加硅灰石原位同时 CO2 捕集和促进 CH4 生成在污泥 AD 中的可行性和性能。添加硅灰石在 16.25 g/L 剂量下，CH4 产量增加了 30.8%，最大甲烷生成速率增加了 64.9%。CO2 通过添加硅灰石有效捕集，导致 CH4 含量达到 81.7%-82.4%。基于阳离子和沉淀物分析，证实了硅灰石通过 Ca 释放和随后的碳酸化来实现 CO2 捕集的机制。结果表明，硅灰石可用作污泥 AD 中同时原位 CO2 捕集和促进 CH4 生成的有效添加剂。
