Department of Environmental Sciences, Jožef Stefan Institute, Jamova Cesta 39, 1000, Ljubljana, Slovenia; Jožef Stefan International Postgraduate School, Jamova Cesta 39, 1000, Ljubljana, Slovenia.
Department of Chemistry, Aristotle University of Thessaloniki, University Campus, 54124, Thessaloniki, Greece.
Environ Res. 2019 Dec;179(Pt A):108738. doi: 10.1016/j.envres.2019.108738. Epub 2019 Sep 13.
The limited knowledge on the stability, removal, and the fate of bisphenol A analogues in the aqueous environment led us to assess the removal by hydrolysis, adsorption, biological treatment and UV photolysis of eighteen common bisphenol compounds (BPs). Hydrolysis of BPs does not occur. The main factor affecting their stability in wastewater samples is storage time, and safe storage conditions were found to be -20 °C or 4 °C for up to four weeks. The results also revealed no significant reduction in the levels of BPs standards when stored in either methanol or ultrapure water. BPE was found to be the most stable, followed by BPF isomers, BPS and BPF, while BP26DM was the least stable and BPM, BPPH, BPP, BPBP and BPFL were quickly adsorbed. For most BPs, the removal efficiency of biological treatment was >85%, and there was no difference between the suspended activated sludge and moving bed bioreactors. Different adsorption affinities of the BPs to biomass were observed and reflect the differences in their K. In terms of degradability, direct UV photolysis in water produced three groups of BPs: (A) highly removable (RE > 94%), (B) moderately removable (RE 50-80%) and (C) poorly removable (RE 25-45%). In nearly all cases degradation followed pseudo-first-order kinetics.
由于对双酚 A 类似物在水环境中的稳定性、去除率和归宿知之甚少，我们评估了水解、吸附、生物处理和紫外光解 18 种常见双酚化合物（BPs）的去除率。BPs 不会发生水解。影响其在废水样品中稳定性的主要因素是储存时间，发现安全储存条件为 -20°C 或 4°C，最长可达四周。结果还表明，无论是储存在甲醇还是超纯水中，BPs 标准品的水平都没有明显降低。BPE 是最稳定的，其次是 BPF 异构体、BPS 和 BPF，而 BP26DM 最不稳定，BPM、BPPH、BPP、BPBP 和 BPFL 则迅速被吸附。对于大多数 BPs，生物处理的去除效率>85%，悬浮活性污泥和移动床生物反应器之间没有差异。观察到 BPs 对生物量的不同吸附亲和力，反映了它们 K 值的差异。就可降解性而言，水中的直接紫外光解产生了三组 BPs：（A）高度可去除（RE>94%），（B）中度可去除（RE 50-80%）和（C）低度可去除（RE 25-45%）。在几乎所有情况下，降解都遵循准一级动力学。
