Department of Environmental Health Engineering, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
Department of Environmental Health Engineering, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
Bioelectrochemistry. 2019 Dec;130:107200. doi: 10.1016/j.bioelechem.2018.08.004. Epub 2018 Aug 28.
In this study, a microbial electrochemical system (MES) was employed to investigate the effect of isoelectric point (IEP) on cheese whey wastewater treatment. The experiments were carried out in a bioreactor equipped with a semicircular carbon cloth and stainless steel electrodes as anode and cathode, respectively. The effects of IEP, whey protein concentration, electrical current, and time were studied. The IEP of the whey protein was determined at pH 5.9. The optimum electrical current was obtained at 6 mA for synthetic cheese whey wastewater. The results of rotary exponential doping showed that the third structure of proteins chenges to the second structure at the IEP. The highest protein removal (98%) was obtained at pH 6. The results showed that 76%, 83%, and 98% protein removal were achieved at 2, 4, and 8 h, respectively.
在这项研究中，采用微生物电化学系统（MES）研究等电点（IEP）对奶酪乳清废水处理的影响。实验在装有半圆形碳纤维布和不锈钢电极的生物反应器中进行，分别作为阳极和阴极。研究了 IEP、乳清蛋白浓度、电流和时间的影响。乳清蛋白的 IEP 在 pH 5.9 时确定。对于合成奶酪乳清废水，最佳电流在 6 mA 时获得。旋转指数掺杂的结果表明，蛋白质的第三结构在 IEP 时变为第二结构。在 pH 6 时获得最高的蛋白质去除率（98%）。结果表明，分别在 2、4 和 8 小时时实现了 76%、83%和 98%的蛋白质去除率。
