College of Resources and Environment, Shandong Agricultural University, Taian, Shandong, China.
J Hazard Mater. 2010 Sep 15;181(1-3):413-8. doi: 10.1016/j.jhazmat.2010.05.026. Epub 2010 May 12.
This paper presents a novel electroenzymatic method for the treatment of bisphenol A (BPA) in a membraneless electrochemical reactor. The electrochemical reactor was arranged with a stainless steel and an enzymatic film as anode and cathode, respectively. The enzymatic film was formed by immobilizing hemoglobin (Hb) on carbon fiber. In the membraneless electrochemical reactor, hydrogen peroxide (H(2)O(2)) was generated in situ in cathode and BPA was oxidated and removed by the combining Hb with H(2)O(2). The experimental conditions for electrogeneration of H(2)O(2) and electroremoval of BPA were optimized. Experimental results showed that in supplied voltage 2.4 V, pH 5.0 and oxygen flow rate 25 mL/min, the electrogeneration of H(2)O(2) and the electroenzymatic removal of BPA were highest. Under optimal operation conditions, the removal efficiency of BPA reached 50.7% in 120 min and then kept constant when further prolonging the period of reaction. Compared with electrochemical and biochemical methods, the removal of BPA through electroenzymatic method was comparatively favorable.
本文提出了一种新颖的无膜电化学方法用于处理双酚 A（BPA）在无膜电化学反应器。电化学反应器由不锈钢和酶膜分别作为阳极和阴极。酶膜是通过将血红蛋白（Hb）固定在碳纤维上形成的。在无膜电化学反应器中，过氧化氢（H 2 O 2 ）在阴极原位生成，BPA 被氧化并通过与 H 2 O 2 结合而被去除。优化了电生成 H 2 O 2 和电去除 BPA 的实验条件。实验结果表明，在提供的电压 2.4 V、pH 值 5.0 和氧气流速 25 mL/min 的条件下，H 2 O 2 的电生成和 BPA 的电酶去除达到最高。在最佳操作条件下，BPA 的去除效率在 120 分钟内达到 50.7%，并且在进一步延长反应时间时保持恒定。与电化学和生化方法相比，通过电酶方法去除 BPA 更有利。
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