Bhowmick, Krishanu and Roy, Sanjukta and Bhowmick, Subhamoy and Jain, Rachna and Majumdar, Swachchha and Sahoo, Ganesh C and Mondal, Priyanka (2022) Fabrication of robust ceramic supported polymeric composite nanofiltration membrane for heavy metal contaminated wastewater treatment. Journal of Water Process Engineering, 50. Art No-103287. ISSN 2214-7144

Full text not available from this repository. (Request a copy)

Abstract

Nanofiltration (NF) membranes with positive charge are essential for efficient removal of heavy metals and salts from waste water. In this work surface modified positively charged novel `ceramic-supported-polymeric' (CSP) composite NF membranes were fabricated with the copper ions embedded crosslinked polyethyleneimine polymer matrix over tubular ceramic substrate using facile dipcoating method. EDX, ATR-FTIR, XPS, FESEM, AFM and contact angle analyses were performed to characterize the chemical structures and morphologies of the prepared membranes. The composite NF membrane exhibited satisfactory pure water permeability (PWP) of 8.1 L.m(-2).h(-1).bar(-1) and promising salt (87.19 % and 74.41 % for Mg2+ and Ca2+, respectively) and heavy metal ion rejections (91.73 %, 83.15 % and 75.50 % for Zn2+, Ni2+ and Cd2+, respectively). Activation energy and overall size-exclusion-dehydration phenomena along with steric hindrance and Donnan electrostatic exclusion plays an important role for heavy metals and salts rejection. In addition, the membrane showed excellent antifouling properties (>99 % humic acid removal) with high flux recovery ratio (77.6 %) and low flux decline ratio (33 %) for 5 h operations (3rd cycle) together with outstanding antibiofouling ability towards Brevibacillusagri and Leclerciaadecarboxylata. Furthermore, excellent chemical stability of the membrane suggests its potential appli-cation for waste water treatment under critical conditions.

Item Type:	Article
Subjects:	Environment and Pollution
Divisions:	UNSPECIFIED
Depositing User:	Bidhan Chaudhuri
Date Deposited:	29 Aug 2023 06:26
Last Modified:	29 Aug 2023 06:26
URI:	http://cgcri.csircentral.net/id/eprint/5425

Actions (login required)

View Item