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Articles

Separation of atrazine from water through thin-film composite membranes: influence of salts and surfactants

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Pages 575-586 | Received 12 Nov 2013, Accepted 24 Apr 2014, Published online: 13 May 2014
 

Abstract

The thin-film composite membrane is aptly named as thin polyamide layer on the asymmetric polysulfone membrane. These membranes have salt rejection abilities, and the order is NaCl > CaCl2. Addition of NaCl increases (17.39% for 500 mg/L for Memb-II), whereas CaCl2 decreases (5.94% for 500 mg/L for Memb-II) atrazine separation. Surfactant-mediated filtrations showed mixed results. Sodium lauryl sulfate (SLS) results better atrazine separation. SLS (200 mg/L) increases 29.72% separation for Memb-II. Contrary to SLS, Cetyl trimethyl ammonium bromide shows little negative influence (10.91%) and for Triton-X-100 (19.3%) it shows more deterioration effect for the same membrane, keeping the same concentration.

Acknowledgments

Authors are grateful to SERB, Department of Science and Technology, India for research funding and Council of Scientific Industrial Research, New Delhi for support. Authors also wish to thank V.K. Agarwal and Jayesh Chaudhuri, Analytical Chemistry Discipline, CSMCRI, Bhavnagar for their technical support.

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