Adsorption of cadmium by activated carbon cloth: influence of surface oxidation and solution pH

Water Research
J R Rangel-Mendez, M Streat

Abstract

The surface of activated carbon cloth (ACC), based on polyacrylonitrile fibre as a precursor, was oxidised using nitric acid, ozone and electrochemical oxidation to enhance cadmium ion exchange capacity. Modified adsorbents were physically and chemically characterised by pH titration, direct titration, X-ray photoelectron spectroscopy, elemental analysis, surface area and porosimetry, and scanning electron microscopy. BET surface area decreased after oxidation, however, the total ion exchange capacity increased by a factor of approximately 3.5 compared to the commercial as-received ACC. A very significant increase in cadmium uptake, by a factor of 13, was observed for the electrochemically oxidised ACC. Equilibrium sorption isotherms were determined at pH 4, 5 and 6 and these showed that cadmium uptake increased with increasing pH. There was clear evidence of physical damage to ozone-oxidised fibre, however, acid and electrochemically oxidised samples were completely stable.

Citations

Feb 8, 2003·Journal of Hazardous Materials·Sandhya Babel, Tonni Agustiono Kurniawan
Dec 1, 2011·Journal of Environmental Sciences (China)·Hai YanHao Chen
Nov 12, 2013·Journal of Environmental Management·Paripurnanda LoganathanJaya Kandasamy
Feb 24, 2016·Environmental Science and Pollution Research International·Carlos E Flores-ChaparroJose Rene Rangel-Mendez
Jan 17, 2012·Journal of Environmental Management·Debora NabarlatzAna Lea Cukierman
Feb 11, 2011·Journal of Hazardous Materials·J Rivera-UtrillaJ M Dias
Nov 10, 2009·Journal of Hazardous Materials·Chen-Chia Huang, Yu-Jhih Su
Sep 22, 2007·Journal of Environmental Management·Joana M DiasManuel Sánchez-Polo
Nov 23, 2005·The Science of the Total Environment·Tonni Agustiono KurniawanSandhya Babel
Aug 25, 2005·Journal of Hazardous Materials·Wenming Wang, Vasilis Fthenakis
Jun 2, 2005·Journal of Colloid and Interface Science·Miguel A Alvarez-MerinoCarlos Moreno-Castilla
Jul 31, 2013·Journal of Hazardous Materials·E Emilia Rios-Del ToroJ Rene Rangel-Mendez
Jun 12, 2019·Royal Society Open Science·Zhongjun XueLinchuan Zhan
Dec 20, 2020·Water Science and Technology : a Journal of the International Association on Water Pollution Research·N BoudrahemL Favier
May 29, 2019·Water Research·Junias Adusei-GyamfiJustine Criquet
Jul 4, 2021·Journal of Hazardous Materials·Hyuck Soo KimJae E Yang
Dec 13, 2016·ACS Applied Materials & Interfaces·Qichuan PengGuohong Qiu

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