Skip navigation
Please use this identifier to cite or link to this item:
Title: Comparative assessment and multivariate optimization of commercially available small scale reverse osmosis membranes
Authors: Garg M.C.
Joshi, Himanshu
Published in: Journal of Environmental Informatics
Abstract: Requirement of reverse osmosis (RO) process at places facing energy and water quality problem makes its assessment and optimization vital while considering recovery, rejection as well as specific energy consumption. In the present paper, three thin film composite (TFC) RO membranes (make: CSM, Dow and Vontron) in spiral wound (SW) configuration have been chosen to study their relative performance. Comparative study of RO membranes was conducted using experimental observations supported by membrane characterization. Optimization experiments were performed using central composite design (CCD) of response surface methodology (RSM). Four input variables viz. feed water pH, temperature, pressure and concentration were optimized and interaction between them was observed, while, recovery, rejection and specific energy consumption (SEC) were taken as response attributes. The experiments conducted employing the optimized input values validated the developed RSM model. Predictive model using multiple response optimization revealed the optimal efficiency of CSM RO membrane at 6.53 pH, 1500 mg/L concentration, 0.78 MPa pressure and 31.94°C temperature producing 19.25% water recovery, 89.21% salt rejection and 17.60 kWh/m3 SEC, respectively. Membrane surface characterization was carried out by FE-SEM, AFM, contact angle measurement and FTIR. The lesser contact angle and smoother surface apparently contributed to the better performance of CSM RO membrane. This paper may demonstrate a simple method for optimizing the commercially available small scale RO membranes. © 2017 ISEIS All rights reserved.
Citation: Journal of Environmental Informatics, 29(1): 39-52
Issue Date: 2017
Publisher: International Society for Environmental Information Sciences
Keywords: Brackish groundwater treatment
Multivariate optimization
Small scale reverse osmosis membranes
Specific energy consumption
ISSN: 17262135
Author Scopus IDs: 56222136700
Author Affiliations: Garg, M.C., Amity Institute of Environmental Sciences (AIES), Amity University Uttar Pradesh, Sector-125, Noida, Uttar Pradesh 201313, India
Joshi, H., Department of Hydrology, Indian Institute of Technology Roorkee, Roorkee, Uttrakhand 247667, India
Corresponding Author: Garg, M.C.; Amity Institute of Environmental Sciences (AIES), Sector-125, India; email:
Appears in Collections:Journal Publications [HY]

Files in This Item:
There are no files associated with this item.
Show full item record

Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.