The study evaluated removal efficiency of 43 pesticides from water by thin-film composite polyamide membrane indigenously prepared by interfacial polymerization of 1,3-phenylenediamine and 1,3,5 trimesoyl chloride coated on asymmetric polysulfone support. Membrane performance was evaluated by gas and liquid chromatography mass spectroscopy determination of multiple pesticides remaining in feed and permeated water following the application of pesticides each @ 0.02, 0.05, and 0.10 mg/L in de-ionized water. The membrane was most efficient in the rejection of persistent organochlorine insecticides, viz. endosulfans (100%), dichlorodiphenyltrichloroethane (95%), and hexachlorocyclohexane (92%). Out of 43 selected pesticides, 33 were removed by > 80%. Size exclusion mass transfer played a significant role for molecules to pass through the membrane as observed for endosulfan isomers, endosulfan sulphate, and difenoconazole with molecular weight > 400. Pesticide rejection was also related to hydrophobicity (Log P). Hydrophobic pesticides with log P > 4.5 were rejected by > 80%, while monocrotophos with less hydrophobicity (log P = − 0.22) exhibited poor rejection (38%). Water flux decreased with an increase in pesticide concentration. The process of pesticide filtration was optimized at 200 psi. The results indicated the potential of the membrane to remove pesticides from water.

该研究评估了通过在不对称聚砜载体上涂覆1,3-苯二胺和1,3,5苯三甲酰氯的界面聚合本机制备的薄膜复合聚酰胺膜从水中去除43种农药的效率。通过在去离子水中分别施用0.02、0.05和0.10 mg / L的农药后，通过气相色谱和液相色谱质谱分析法测定进水和渗透水中残留的多种农药，从而评价膜的性能。膜对持久性有机氯杀虫剂的排斥最有效。硫丹（100％），二氯二苯基三氯乙烷（95％）和六氯环己烷（92％）。在43种选定的农药中，有33种的去除率> 80％。P）。log P  > 4.5的疏水性农药被> 80％的污染物排斥，而疏水性较低的久效磷（log P  = − 0.22）的排斥性很差（38％）。随着农药浓度的增加，水通量下降。农药过滤过程在200 psi下进行了优化。结果表明该膜具有从水中去除农药的潜力。