Bisphenol A (BPA) is an endocrine-disrupting chemical that has caught a lot of attention recently due to its toxicity and ubiquitous presence in the environment. Therefore, removal of BPA from contaminated environments such as water is of high importance. In this study, an alginate/pectin anode containing immobilized laccase is prepared, and the anode is applied in an electroenzymatic oxidation system for BPA degradation. After 4 h, the laccase–alginate/pectin system demonstrates a much higher BPA removal efficiency (95%) than the similar system without immobilized laccase (50%, control system). The effects of humic acids (HA) on BPA degradation are also observed. HA may have accelerated the laccase-catalyzed coupling reaction between BPA and reactive radical intermediates, which results in increased BPA removal efficiency (92% after 150 min). It is demonstrated that laccase immobilization on an alginate/pectin electrode can greatly enhance BPA removal via electrooxidation. Humic acids which are abundantly present in nature can also make this removal process faster. Overall, this study highlights the great application potential of laccase-immobilized bioelectrodes for BPA removal in conditions close to real-life scenarios.

中文翻译：

---

腐植酸存在下漆酶催化电氧化去除双酚 A

双酚 A (BPA) 是一种内分泌干扰化学物质，由于其毒性和在环境中无处不在的存在，最近引起了广泛关注。因此，从受污染的环境（如水）中去除 BPA 非常重要。在这项研究中，制备了一种含有固定化漆酶的藻酸盐/果胶阳极，并将该阳极应用于电酶氧化系统中用于降解 BPA。4 小时后，漆酶-藻酸盐/果胶系统表现出比没有固定漆酶的类似系统（50%，对照系统）高得多的 BPA 去除效率（95%）。还观察到腐植酸 (HA) 对 BPA 降解的影响。HA 可能加速了 BPA 和活性自由基中间体之间的漆酶催化偶联反应，从而提高了 BPA 去除效率（150 分钟后达到 92%）。已经证明，在藻酸盐/果胶电极上固定漆酶可以通过电氧化大大提高 BPA 的去除率。自然界中大量存在的腐植酸也可以使这种去除过程更快。总体而言，这项研究突出了漆酶固定生物电极在接近现实生活场景的条件下去除 BPA 的巨大应用潜力。