Effects of molecular oxygen and pH on the adsorption of aniline to activated carbon

Peter Fox, Kamalesh Pinisetti

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper examines the influence of molecular oxygen and pH on the adsorption of aniline to F-300 Calgon Carbon. Molecular oxygen increased the adsorptive capacity of GAC for anilines by 250-400% at pH 3, 30-83% at pH 5, 17-42% at pH 9, and 8-45% at pH 11 (higher than those obtained in the absence of molecular oxygen). At pH 7, some of the products formed are poorly adsorbed as evidenced by an increase in UV absorbance in the oxic isotherms as compared to the other isotherms. Oxygen uptake measurements revealed significant consumption of molecular oxygen during the adsorption of aniline compounds. It is speculated that the increase in the GAC adsorptive capacity under oxic conditions was due to the polymerization of these adsorbates on the carbon surface.

Original languageEnglish (US)
Title of host publicationCritical Issues in Water and Wastewater Treatment
EditorsJoseph N. Ryan, Marc Edwards
PublisherPubl by ASCE
Pages617-623
Number of pages7
ISBN (Print)0784400318
StatePublished - Jan 1 1994
EventProceedings of the 1994 National Conference on Environmental Engineering - Boulder, CO, USA
Duration: Jul 11 1994Jul 13 1994

Publication series

NameNational Conference on Environmental Engineering
ISSN (Print)0731-1516

Other

OtherProceedings of the 1994 National Conference on Environmental Engineering
CityBoulder, CO, USA
Period7/11/947/13/94

ASJC Scopus subject areas

  • Environmental Engineering

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  • Cite this

    Fox, P., & Pinisetti, K. (1994). Effects of molecular oxygen and pH on the adsorption of aniline to activated carbon. In J. N. Ryan, & M. Edwards (Eds.), Critical Issues in Water and Wastewater Treatment (pp. 617-623). (National Conference on Environmental Engineering). Publ by ASCE.