Department of Environmental Sciences, Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia; Jožef Stefan International Postgraduate School, Jamova cesta 39, 1000 Ljubljana, Slovenia.
Faculty of Health Sciences, University of Ljubljana, Zdravstvena pot 5, 1000 Ljubljana, Slovenia.
Sci Total Environ. 2022 Jan 15;804:149878. doi: 10.1016/j.scitotenv.2021.149878. Epub 2021 Aug 25.
The removal of 18 bisphenols at wastewater relevant concentrations (μg L range) was investigated and compared between Chlorella vulgaris cultures with pH adjusted to 6.8 and pH non-adjusted cultures where pH raised to above 10. Bisphenols with a high partition coefficient (log P > 6) partitioned to biomass soon after spiking, whereas bisphenols with a low partition coefficient (log P < 4) remained largely in the aqueous phase. Hydrophobic bisphenols and BPF isomers were removed to a large degree in pH adjusted conditions, while BPS and BPAF were the most recalcitrant. The overall average removal after 13 days was similar in both experiments, with 72 ± 2% and 73 ± 5% removed in pH non-adjusted and pH adjusted series, respectively. The removal correlated with chlorophyll a concentration for most bisphenols meaning that algae played a crucial role in their removal, while culture pH also governed the removal of some compounds.
研究了在与废水相关的浓度（μg/L 范围内）下，调整 pH 值为 6.8 的小球藻培养物与 pH 值升高到 10 以上的非调整 pH 值培养物之间 18 种双酚的去除情况，并对其进行了比较。高分配系数（log P>6）的双酚很快在接种后分配到生物量中，而低分配系数（log P<4）的双酚则主要留在水相中。在调整 pH 值的条件下，疏水性双酚和 BPF 异构体被大量去除，而 BPS 和 BPAF 则最难去除。在这两种实验中，13 天后的总体平均去除率相似，非调整 pH 值和调整 pH 值系列分别去除了 72±2%和 73±5%。对于大多数双酚来说，去除率与叶绿素 a 浓度相关，这意味着藻类在去除双酚方面发挥了关键作用，而培养物 pH 值也控制了一些化合物的去除。
