Skip navigation
Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/26799
Title: Optimization and economic analysis of small scale nanofiltration and reverse osmosis brackish water system powered by photovoltaics
Authors: Garg M.C.
Joshi, Himanshu
Published in: Desalination
Abstract: Integration of renewable energy with desalination technologies is a strongly emerging field in many regions of the world having drinking water and energy crisis. This study presents the results of a techno-economical investigation of a small scale, photovoltaic (PV) powered hybrid nanofiltration (NF) and reverse osmosis (RO) membrane system for the brackish water treatment. Optimization experiments of six commercially available small scale RO and NF membranes were carried out using central composite design (CCD) of response surface methodology (RSM). Experiments employing optimized input conditions validate the developed RSM model. Predictive model, using multiple response optimizations, revealed that CSM RO and NF250 membranes showed the optimal efficiency with 20.24% and 18.98% water recovery, 90.22% and 70.64% salt rejection and 17.87 and 9.35kWh/m3 of SEC respectively. Comparison of membranes was also carried out by membrane characterization duly supported by experimental observations. Membrane surface was characterized by AFM, contact angle measurement and FTIR. Hybrid experiments were performed with NF and RO membranes in concentrate and permeate staging configurations. Results also suggested that techno-economic performance of the hybrid PV-NF/RO system was affected by factors like mode of integration of NF and RO membranes, recovery ratio, daily average operating hours and government subsidy. © 2014 Elsevier B.V.
Citation: Desalination, 353: 57-74
URI: https://doi.org/10.1016/j.desal.2014.09.005
http://repository.iitr.ac.in/handle/123456789/26799
Issue Date: 2014
Publisher: Elsevier
Keywords: Brackish groundwater treatment
Cost analysis
Multivariate optimization
Photovoltaic
Small scale RO-NF membranes
ISSN: 119164
Author Scopus IDs: 56222136700
7103239839
Author Affiliations: Garg, M.C., Department of Hydrology, Indian Institute of Technology Roorkee, Roorkee, Uttrakhand, 247667, India
Joshi, H., Department of Hydrology, Indian Institute of Technology Roorkee, Roorkee, Uttrakhand, 247667, India
Funding Details: This work was carried out with the financial support provided by Ministry of Drinking Water and Sanitation, New Delhi, India . We would like to thank all those involved in this project.
Corresponding Author: Garg, M.C.; Department of Hydrology, Indian Institute of Technology RoorkeeIndia
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.