Department of Environmental Engineering, Erciyes University, Kayseri, Turkey.
Department of Civil Engineering, Abdullah Gul University, Kayseri, Turkey.
Environ Sci Pollut Res Int. 2023 Jan;30(4):8732-8745. doi: 10.1007/s11356-022-20077-5. Epub 2022 Apr 11.
The residues of pesticides that reach water resources from agricultural activities in several ways contaminate drinking water resources and threaten aquatic life. This study aimed to investigate the performance of three reverse osmosis (RO) membranes (BW30-LE, SW30-XLE, and GE-AD) in rejecting four different pesticides (tributyl phosphate, flutriafol, dicofol, and irgarol) from secondary treated urban wastewater and also to elucidate the mechanisms underlying the rejection of these pesticides. RO experiments were conducted using pesticide-spiked wastewater samples under 10 and 20 bar transmembrane pressures (TMP) and membrane performances were evaluated. Overall, all the membranes tested exhibited over 95% rejection performances for all pesticides at both TMPs. The highest rejections for tributyl phosphate (99.0%) and irgarol (98.3%) were obtained with the BW30-LE membrane, while for flutriafol (99.9%) and dicofol (99.1%) with the GE-AD membrane. The increase in TMP from 10 to 20 bar did not significantly affect the rejections of all pesticides. The rejection performances of RO membranes were found to be governed by projection area as well as molecular weight and hydrophobicity/hydrophilicity of pesticides. Among the membranes tested, the SW30-XLE membrane was the most prone to fouling due to the higher roughness.
农业活动中残留的农药通过多种途径进入水资源，污染饮用水资源并威胁水生生物。本研究旨在考察三种反渗透（RO）膜（BW30-LE、SW30-XLE 和 GE-AD）对二级处理城市废水中四种不同农药（磷酸三丁酯、氟啶胺、三氯杀螨醇和敌草隆）的截留性能，同时阐明这些农药截留的机理。在 10 和 20 巴跨膜压力（TMP）下，用农药污染的废水样品进行 RO 实验，并评估膜性能。总体而言，所有测试的膜在两种 TMP 下对所有农药的截留率均超过 95%。BW30-LE 膜对磷酸三丁酯（99.0%）和敌草隆（98.3%）的截留率最高，而 GE-AD 膜对氟啶胺（99.9%）和三氯杀螨醇（99.1%）的截留率最高。TMP 从 10 巴增加到 20 巴，对所有农药的截留率没有显著影响。RO 膜的截留性能受农药的投影面积、分子量以及疏水性/亲水性的影响。在测试的膜中，SW30-XLE 膜由于粗糙度较高，最容易受到污染。
