Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Viet Nam; Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Viet Nam.
VNU Key Laboratory of Analytical Technology for Environmental Quality and Food Safety Control (KLATEFOS), University of Science, Vietnam National University, Hanoi, 334 Nguyen Trai, Hanoi, Viet Nam; Center for Environmental Technology and Sustainable Development (CETASD), University of Science, Vietnam National University, Hanoi, 334 Nguyen Trai, Hanoi, Viet Nam.
Chemosphere. 2021 Aug;276:130163. doi: 10.1016/j.chemosphere.2021.130163. Epub 2021 Mar 3.
Parabens are a class of compounds primarily used as antimicrobial preservatives in pharmaceutical products, cosmetics, and foodstuff. Their widely used field leads to increasing concentrations detected in various environmental matrices like water, soil, and sludges, even detected in human tissue, blood, and milk. Treatment techniques, including chemical advanced oxidation, biological degradation, and physical adsorption processes, have been widely used to complete mineralization or to degrade parabens into less complicated byproducts. All kinds of processes were reviewed to give a completed picture of parabens removal. In light of these treatment techniques, advanced photocatalysis, which is emerging rapidly and widely as an economical, efficient, and environmentally-friendly technique, has received considerable attention. TiO-based and non-TiO-based photocatalysts play an essential role in parabens degradation. The effect of experimental parameters, such as the concentration of targeted parabens, concentration of photocatalyst, reaction time, and initial solution pH, even the presence of radical scavengers, are surveyed and compared from the literature. Some representative parabens such as methylparaben, propylparaben, and benzylparaben have been successfully studied the reaction pathways and their intermediates in their degradation process. As reported in the literature, the degradation of parabens involves the production of highly reactive species, mainly hydroxyl radicals. These reactive radicals would attack the paraben preservatives, break, and finally mineralize them into simpler inorganic and nontoxic molecules. Concluding perspectives on the challenges and opportunities for photocatalysis toward parabens remediation are also intensively highlighted.
对羟基苯甲酸酯是一类化合物，主要用作药物制品、化妆品和食品中的抗菌防腐剂。由于其应用广泛，在水、土壤和淤泥等各种环境基质中，甚至在人体组织、血液和牛奶中都检测到了对羟基苯甲酸酯的浓度不断增加。处理技术，包括化学高级氧化、生物降解和物理吸附过程，已被广泛用于完成矿化或将对羟基苯甲酸酯降解为更简单的副产物。各种工艺都被用来全面去除对羟基苯甲酸酯。鉴于这些处理技术，作为一种经济、高效和环保的新技术，先进的光催化技术正在迅速广泛地得到应用，引起了人们的极大关注。基于 TiO 的和非 TiO 的光催化剂在对羟基苯甲酸酯的降解中起着重要作用。从文献中调查和比较了实验参数（如目标对羟基苯甲酸酯的浓度、光催化剂的浓度、反应时间和初始溶液 pH 值，甚至自由基清除剂的存在）的影响。一些代表性的对羟基苯甲酸酯，如甲基对羟基苯甲酸酯、丙基对羟基苯甲酸酯和苄基对羟基苯甲酸酯，已成功研究了它们在降解过程中的反应途径和中间产物。正如文献中所报道的，对羟基苯甲酸酯的降解涉及到产生高反应性物质，主要是羟基自由基。这些活性自由基会攻击对羟基苯甲酸酯防腐剂，将其分解，最终将其矿化为更简单的无机和无毒分子。还深入强调了光催化技术在修复对羟基苯甲酸酯方面面临的挑战和机遇。
