Sustainable Environment Research Centre, University of South Wales, Llantwit Road, Pontypridd, Rhondda Cynon Taff, CF37 1DL, UK.
Sustainable Environment Research Centre, University of South Wales, Llantwit Road, Pontypridd, Rhondda Cynon Taff, CF37 1DL, UK.
Bioresour Technol. 2021 Dec;342:125926. doi: 10.1016/j.biortech.2021.125926. Epub 2021 Sep 13.
A novel combination of solids screening, centrifugation, microfiltration, pervaporation, and electrodialysis were used for the targeted and exclusive recovery of volatile fatty acids (VFAs) from an 80L bioreactor. The bioreactor was continually-fed with grass waste, containing 40gL total solids, over three, seven-day, hydraulic retention times. A VFA solution with a concentration up to 4,500 mgL was recovered. VFA yields were also increased from 707 to 875 mg of VFA per gram of volatile solids by alleviating end-product inhibition. Both these accomplishments are significant step-changes in adding value to waste, and increased substrate utilisation rates will be attractive from a waste remediation perspective.
采用固液分离、离心、微滤、渗透蒸发和电渗析的新组合，从 80L 生物反应器中靶向、专一地回收挥发性脂肪酸 (VFA)。生物反应器连续进料，含有 40gL 总固体，水力停留时间为三个 7 天。回收了浓度高达 4500mg/L 的 VFA 溶液。通过缓解末端产物抑制，VFA 产率也从每克挥发性固体 707mg 增加到 875mg。这两个成就都显著提高了废物的附加值，从废物修复的角度来看，提高基质利用率将具有吸引力。
