Diltz Robert A, Marolla Theodore V, Henley Michael V, Li Lixiong
Air Force Research Laboratory, Tyndall Air Force Base, FL 32403, USA.
Bioresour Technol. 2007 Feb;98(3):686-95. doi: 10.1016/j.biortech.2006.01.022. Epub 2006 Apr 4.
Post-treatment of an anaerobic fermentation broth was evaluated using a 150 gal/day, single cartridge prototype reverse osmosis (RO) system. Baseline tests were conducted at 25 degrees C using six organic model compounds representing key species found in the fermentation broth: ethanol, butanol, acetic acid, oxalic acid, lactic acid, and butyric acid. Correlations of the rejection and recovery efficiencies for these organic species, individually and in simulated mixtures, were obtained as a function of feed pressure with and without recirculation of the retentate. The actual fermentation broth obtained from a continuous-flow biohydrogen process was treated by the RO system under the operating conditions similar to those used in the baseline tests, resulting in greater than 95% removal of total organic carbon. These results are encouraging and useful for further studies on the feasibility of incorporating the RO technology into an integrated and field deployable wastewater management and water recovery system.
使用一个每天处理量为150加仑的单滤芯反渗透（RO）系统原型对厌氧发酵液进行了后处理评估。在25摄氏度下进行了基线测试，使用了六种有机模型化合物，它们代表了发酵液中发现的关键物质：乙醇、丁醇、乙酸、草酸、乳酸和丁酸。分别以及在模拟混合物中，获得了这些有机物质的截留率和回收率与进料压力的关系，同时考虑了截留液再循环和不进行再循环的情况。在与基线测试相似的操作条件下，用RO系统处理了从连续流生物制氢过程中获得的实际发酵液，总有机碳的去除率超过了95%。这些结果令人鼓舞，对于进一步研究将RO技术纳入集成且可现场部署的废水管理和水回收系统的可行性很有帮助。
