Anaerobic dry-fermentation of food wastes can be utilized for the production of volatile fatty acids (VFA). However, especially for high load fermentation systems, accumulation of VFAs may result in inhibition of fermentation process. In this study, separation of VFAs from synthetic mixtures via a vapor permeation membrane contactor (VPMC) system with an air-filled polytetrafluoroethylene (PTFE) membrane was assessed at various temperatures and permeate solution concentrations. In addition, a pioneering integrated leach-bed fermentation and membrane separation system was operated with undefined mixed culture for the purpose of enhanced VFA production along with its recovery. Hybrid system resulted in 42% enhancement in total VFA production and 60% of total VFAs were recovered through the VPMC system. The results of this study revealed that integrated system can be exploited as a means of increasing organic loading to fermentation systems and increasing the value of VFA production.

食物垃圾的厌氧干发酵可用于生产挥发性脂肪酸（VFA）。但是，特别是对于高负荷发酵系统，VFA的积累可能会导致发酵过程受到抑制。在这项研究中，评估了在各种温度和渗透溶液浓度下，通过带有充气聚四氟乙烯（PTFE）膜的蒸汽渗透膜接触器（VPMC）系统从合成混合物中分离VFA的方法。此外，开创性的集成式浸出床发酵和膜分离系统在不确定的混合培养条件下运行，目的是提高VFA的生产及其回收率。混合系统使VFA的总产量提高了42％，通过VPMC系统回收了60％的VFA。