Preparation and Performance of PU/Cpsf Blend Ultrafiltration Membranes for Removal of Heavy Metal Ion Rejection Studies

S., Latha C.; LakshmiD, Shanthana; P., Maheswari; D, Mohan

doi:10.30684/etj.2022.132153.1201

	Preparation and Performance of PU/Cpsf Blend Ultrafiltration Membranes for Removal of Heavy Metal Ion Rejection Studies
Engineering and Technology Journal
Article 1, Volume 40, Issue 10, October 2022, Pages 1275-1283 PDF (638.69 K)
Document Type: Research Paper
DOI: 10.30684/etj.2022.132153.1201
Authors
Latha C. S.^* ¹; Shanthana LakshmiD²; Maheswari P.³; Mohan D⁴
¹Chemistry Engineering Dept, QuaidE Millath Government College for Women, Chennai, Tamil Nadu, India, 600 002.
²Ariviya Technologies, Chinnaya Street, Pattukkottai, India - 600017
³Department of Chemistry, SRM Valliammai Engineering College, SRM Nagar, Kattankulathur, Chennai, Tamil Nadu, India 603203
⁴Dean, Science & Humanities, Rajalakshmi Engineering College, Thandalam, Chennai, Tamil Nadu, India, 602 105
Abstract
The performance of membranes for a specific application can be determined with the help of structural properties such as molecular weight cut-off (MWCO), morphology, and pore statistics. Heavy metal ions from aqueous streams can be separated with the help of ultrafiltration membranes. In the presence and absence of the various components of the additive poly (ethylene glycol) 600, MWCOs and pore statistics of polyurethane (PU) and carboxylated polysulfone (CPSf) blend ultrafiltration (Total Polymer Concentration = 17.5 wt %) were studied with the help of dextran of different molecular weights ranging from 19 kDa to 150 kDa. The derived pore size, porosity, and the number of pores have a remarkable relationship with the MWCO, morphology, and the flux performance of the membranes. The blend membranes rejected certain toxic divalent heavy metal ions such as copper, cadmium, nickel, and zinc by complexing them into a polymeric ligand, poly(ethyleneimine) (PEI). The effect of polymer blend compositions and additive concentrations on metal ions' rejection and permeate flux are discussed
Highlights
Polymer blend membranes composed of polyurethane and carboxylated polysulfone fabricated An additive polyethylene glycol 600 is used for morphology-controlled membranes PU/CPSf (80/20 and 75/25 %) concentration was found to be optimum Toxic heavy metal ions (Cu²⁺, Ni²⁺, Zn²⁺, and Cd²⁺) were separated by complexing them with polyethyleneimine.
Keywords
Ultrafiltration; blend membrane; MWCO; pore statistics; toxic metal ion separation

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