Article: Fabrication of industrially feasible zeolite membrane for the removal of hexavalent chromium Journal: International Journal of Environment and Sustainable Development (IJESD) 2023 Vol.22 No.4 pp.375 - 392 Abstract: The present study proposed fabricating an industrially feasible zeolite membrane on an indigenously developed inexpensive tubular ceramic substrate. A type of zeolite framework, Faujasite, was deposited on the substrate using source materials, such as alumina and silica, by hydrothermal treatment. The membrane was characterised by XRD, FESEM, zeta potential, and contact angle analyses. Distinguishable physical and structural characteristics of the zeolite membrane from ceramic substrate substantiated a formation of the composite membrane. Further, the potentiality of the membrane was assessed on the removal of hexavalent chromium from synthetic wastewater at various operating parameters in a crossflow system. The prepared membrane offered a maximum chromium removal of 82% with a flux of 5.05 × 10-5 m3m-2s-1 at the operating conditions of 1,000 ppm concentration, 345 kPa pressure, and 1.11 × 10-6 m3s-1 crossflow rate. The membrane revealed its essential employment by providing a higher flux with better rejection than other membranes applied in chromium removal. Inderscience Publishers - linking academia, business and industry through research

Title: Fabrication of industrially feasible zeolite membrane for the removal of hexavalent chromium

Authors: R. Vinoth Kumar; Ashim Kumar Basumatary; G. Pugazhenthi

Addresses: Department of Chemical Engineering, National Institute of Technology Andhra Pradesh, Tadepalligudem, Andhra Pradesh – 534101, India ' Department of Chemical Engineering, Assam Engineering College, Jalukbari, Guwahati, Assam – 781013, India ' Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam – 781039, India

Abstract: The present study proposed fabricating an industrially feasible zeolite membrane on an indigenously developed inexpensive tubular ceramic substrate. A type of zeolite framework, Faujasite, was deposited on the substrate using source materials, such as alumina and silica, by hydrothermal treatment. The membrane was characterised by XRD, FESEM, zeta potential, and contact angle analyses. Distinguishable physical and structural characteristics of the zeolite membrane from ceramic substrate substantiated a formation of the composite membrane. Further, the potentiality of the membrane was assessed on the removal of hexavalent chromium from synthetic wastewater at various operating parameters in a crossflow system. The prepared membrane offered a maximum chromium removal of 82% with a flux of 5.05 × 10^-5 m³m^-2s^-1 at the operating conditions of 1,000 ppm concentration, 345 kPa pressure, and 1.11 × 10^-6 m³s^-1 crossflow rate. The membrane revealed its essential employment by providing a higher flux with better rejection than other membranes applied in chromium removal.

Keywords: Faujasite; hydrothermal treatment; zeolite membrane; chromium removal; contact angle; tubular membrane; Indian clays; low-cost membrane; zeta potential; composite membrane.

DOI: 10.1504/IJESD.2023.133822

International Journal of Environment and Sustainable Development, 2023 Vol.22 No.4, pp.375 - 392

Received: 14 Dec 2020
Accepted: 03 Mar 2022
Published online: 04 Oct 2023 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article

Title: Fabrication of industrially feasible zeolite membrane for the removal of hexavalent chromium

Keep up-to-date