Department of Civil and Environmental Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, United States.
Department of Civil and Environmental Engineering, University of Wisconsin-Platteville, Platteville, WI 53818, United States.
Bioresour Technol. 2016 Jan;200:485-92. doi: 10.1016/j.biortech.2015.10.066. Epub 2015 Oct 23.
A microbial electrolysis cell (MEC)-forward osmosis (FO) system was previously reported for recovering ammonium and water from synthetic solutions, and here it has been advanced with treating landfill leachate. In the MEC, 65.7±9.1% of ammonium could be recovered in the presence of cathode aeration. Without aeration, the MEC could remove 54.1±10.9% of ammonium from the leachate, but little ammonia was recovered. With 2M NH4HCO3 as the draw solution, the FO process achieved 51% water recovery from the MEC anode effluent in 3.5-h operation, higher than that from the raw leachate. The recovered ammonia was used as a draw solute in the FO for successful water recovery from the treated leachate. Despite the challenges with treating returning solution from the FO, this MEC-FO system has demonstrated the potential for resource recovery from wastes, and provide a new solution for sustainable leachate management.
先前有研究报道了一种微生物电解池（MEC）-正向渗透（FO）系统，用于从合成溶液中回收氨和水，在此基础上，本研究将其应用于处理垃圾渗滤液。在 MEC 中，阴极曝气可回收 65.7±9.1%的氨。不曝气时，MEC 可从渗滤液中去除 54.1±10.9%的氨，但氨的回收率较低。以 2M NH4HCO3 为汲取液，FO 过程可在 3.5 小时的运行时间内从 MEC 阳极流出液中回收 51%的水，高于从原始渗滤液中的回收率。回收的氨被用作 FO 的汲取溶质，成功地从处理后的渗滤液中回收了水。尽管从 FO 中回收返回溶液存在挑战，但该 MEC-FO 系统已证明了从废物中回收资源的潜力，并为可持续的渗滤液管理提供了新的解决方案。
