Preparation, characterization, and performance evaluation of LTA zeolite–ceramic composite membrane by separation of BSA from aqueous solution. Issue 4 (4th March 2017)

• Record Type: Journal Article
• Authors: Vasanth, D.; Pugazhenthi, G.; Uppaluri, R.
• Is Part Of: Separation science and technology. Volume 52:Issue 4(2017)
• Page Start: 767
• Page End: 777
• Publication Date: 2017-03-04
• Subjects: BSA separation -- composite membrane -- low-cost support -- LTA zeolite membrane; Separation (Technology) -- Periodicals; 660.284205
• DOI: 10.1080/01496395.2016.1260142
• Languages: English
• ISSNs: 0149-6395

Abstract

ABSTRACT: Using low-cost clay supports as substrates, ceramic–LTA zeolite composite membranes (Z1–Z4) were fabricated with hydrothermal crystallization. The composite membranes were achieved with variations in the sequential zeolite depositional steps. For Z1–Z4 membranes, various characterization techniques such as thermogravimetric (TG), particle size distribution (PSD), X-ray diffraction (XRD), and field emission scanning electron microscopic (FE-SEM) analysis were applied. For the Z1–Z4 membranes, the pure water permeability, porosity, and average pore size varied from 1.22 × 10 −7 to 1.19 × 10 −8 m 3 /m 2 s kPa, 30–23%, and 215–76 nm, respectively. For the Z4 membrane, ultrafiltration experiments were conducted at a pH of 2.5 and transmembrane pressure differential of 207 kPa using aqueous bovine serum albumin (BSA) solutions. The optimal flux and rejection correspond to 4.54 × 10 −7 m 3 /m 2 s and 80%, respectively.