Polyamide thin film composite membranes have dominated current reverse osmosis market on account of their excellent separation performances compared to the integrally skinned counterparts.Despite their very promis-ing separation performance,chlorine-induced degradation resulted from the susceptibility of polyamide toward chlorine attack has been regarded as the Achilles's heel of polyamide thin film composite.The free chlorine species present during chlorine treatment can impair membrane performance through chlorination and depoly-merization of the polyamide selective layer.From material point of view,a chemically stable membrane is crucial for the sustainable application of membrane separation process as it warrants a longer membrane lifespan and reduces the cost involved in membrane replacement.Various strategies,particularly those involved membrane material optimization and surface modifications,have been established to address this issue.This review discusses membrane degradation by free chlorine attack and its correlation with the surface chemistry of polyamide.The advancement in the development of chlorine resistant polyamide thin film composite membranes is reviewed based on the state-of-the-art surface modifications and tailoring approaches which include the in situ and post-fabrication membrane modifications using a broad range of functional materials.The challenges and future directions in this field are also highlighted.

Pei Sean Goh;Kar Chun Wong;Tuck Whye Wong;Ahmad Fauzi Ismail

Advanced Membrane Technology Research Centre(AMTEC),School of Chemical and Energy Engineering,Faculty of Engineering,Universiti Teknologi Malaysia,81310 Johor Bahru,Malaysia

化学科学与工程前沿

[1]Pei Sean Goh;Kar Chun Wong;Tuck Whye Wong;Ahmad Fauzi Ismail-.Surface-tailoring chlorine resistant materials and strategies for polyamide thin film composite reverse osmosis membranes)[J].化学科学与工程前沿,2022(05):564-591

integrally,depoly

Surface,tailoring,chlorine,resistant,materials,strategies,polyamide,thin,film,composite,reverse,osmosis,membranes,Polyamide,have,dominated,current,market,account,their,excellent,separation,performances,compared,skinned,counterparts,Despite,very,promis,induced,degradation,resulted,from,susceptibility,toward,attack,has,been,regarded,Achilles,heel,free,species,present,during,treatment,can,impair,through,chlorination,merization,selective,layer,From,point,chemically,stable,crucial,sustainable,application,process,warrants,longer,lifespan,reduces,cost,involved,replacement,Various,particularly,those,optimization,surface,modifications,established,address,this,issue,This,discusses,by,its,correlation,chemistry,advancement,development,reviewed,state,approaches,which,include,situ,post,fabrication,using,broad,range,functional,challenges,future,directions,field,also,highlighted

0.540542