Strategic Water Infrastructure Lab, School of Civil, Mining and Environmental Engineering, University of Wollongong, Wollongong, NSW 2522, Australia.
Smart Water Research Centre, Australian Rivers Institute, School of Environment, Griffith University, QLD 4222, Australia.
Bioresour Technol. 2016 Jan;200:477-84. doi: 10.1016/j.biortech.2015.10.054. Epub 2015 Oct 19.
Redox-mediators such as syringaldehyde (SA) can improve laccase-catalyzed degradation of trace organic contaminants (TrOCs) but may increase effluent toxicity. The degradation performance of 14 phenolic and 17 non-phenolic TrOCs by a continuous flow enzymatic membrane reactor (EMR) at different TrOC and SA loadings was assessed. A specific emphasis was placed on the investigation of the toxicity of the enzyme (laccase), SA, TrOCs and the treated effluent. Batch tests demonstrated significant individual and interactive toxicity of the laccase and SA preparations. Reduced removal of resistant TrOCs by the EMR was observed for dosages over 50μg/L. SA addition at a concentration of 10μM significantly improved TrOC removal, but no removal improvement was observed at the elevated SA concentrations of 50 and 100μM. The treated effluent showed significant toxicity at SA concentrations beyond 10μM, providing further evidence that higher dosage of SA must be avoided.
氧化还原介质如丁香醛 (SA) 可以提高漆酶催化的痕量有机污染物 (TrOC) 的降解，但可能会增加出水毒性。在不同的 TrOC 和 SA 负荷下，通过连续流动酶膜反应器 (EMR) 评估了 14 种酚类和 17 种非酚类 TrOC 的降解性能。特别强调了对酶 (漆酶)、SA、TrOC 和处理出水毒性的研究。批次测试表明，酶和 SA 制剂具有显著的单独和交互毒性。当剂量超过 50μg/L 时，观察到 EMR 对抗性 TrOC 的去除率降低。添加浓度为 10μM 的 SA 可显著提高 TrOC 的去除率，但在 50 和 100μM 升高的 SA 浓度下未观察到去除率的提高。处理后的废水在 SA 浓度超过 10μM 时表现出显著的毒性，进一步证明必须避免更高剂量的 SA。
