Performance of chemically resistant polyurea reverse osmosis membrane in the treatment of highly alkaline industrial wastewater containing sodium aluminate

The goal of the present study is to treat industrial wastewater containing sodium aluminate using a chemically inert polyurea (PU) based thin film composite (TFC) reverse osmosis (RO) membrane to promote water reclamation and zero liquid discharge (ZLD). Pretreatment was carried out to reduce the pH...

Full description

Saved in:
Bibliographic Details
Published in:Water science and technology 2020-12, Vol.82 (11), p.2259-2270
Main Authors: Nazia, Shaik, Sekhar, Sugali Chandra, Jegatheesan, Veeriah, Bhargava, Suresh K, Sridhar, Sundergopal
Format: Article
Language:English
Subjects:
Alkaline wastes
Aluminum Compounds
Chemical oxygen demand
Colour
Cross-Sectional Studies
Electrical conductivity
Electrical resistivity
Electron microscopy
Experiments
Feed composition
Industrial effluents
Industrial pollution
Industrial wastes
Industrial wastewater
Membrane separation
Membranes
Membranes, Artificial
Morphology
Osmosis
Pollutants
Pollution effects
Polyethersulfones
Polymerization
Polymers
Polyureas
Pretreatment
Pretreatment of water
Reclamation
Reverse osmosis
Scanning electron microscopy
Sedimentation & deposition
Sodium
Sodium aluminate
Sodium Compounds
Substrates
Thin films
Total dissolved solids
Waste Water
Wastewater
Wastewater treatment
Water pollution
Water Purification
Water reclamation
Water treatment
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The goal of the present study is to treat industrial wastewater containing sodium aluminate using a chemically inert polyurea (PU) based thin film composite (TFC) reverse osmosis (RO) membrane to promote water reclamation and zero liquid discharge (ZLD). Pretreatment was carried out to reduce the pH of the effluent from 12.5 to 7.1. The TFC RO membrane was fabricated by coating PU on Polyethersulfone (PES) substrate by interfacial polymerization (IP). The surface and cross-sectional morphologies of the membrane were characterized using scanning electron microscopy (SEM). The indigenously synthesized membrane was effective in the removal of total dissolved solids (TDS), chemical oxygen demand (COD), colour and electrical conductivity. The experiments were conducted by varying the feed composition of the wastewater. The maximum water recovery and flux were found to be 74% and 73.9 L/m h. RO process using PU membrane exhibited significant potential for cost effective, safe and pollution-free treatment of sodium aluminate industrial effluent.
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.2020.495