Chemically activated carbon on a fiberglass substrate for removal of trace atrazine from water

Zhongren Yue, James Economy, Kishore Rajagopalan, Gary Bordson, Marv Piwoni, Li Ding, Vernon L. Snoeyink, Benito J. Mariñas

Research output: Contribution to journalArticle

Abstract

Chemically activated fiber (CAF) for removal of trace atrazine from water was prepared by coating fiberglass assemblies with a phenolic resin along with a chemical activation agent of ZnCl2, then stabilization and heat treatment in N2 at 500 °C. The carbon on the CAF shows similar BET surface area and volumes of narrow micropores (<10 Å), higher volumes of wide micropores (10-20 Å) and narrow mesopores (20-50 Å), as compared with a commercially available GAC F-400. Adsorption isotherm data show that the CAF has a higher adsorption capacity for atrazine than the GAC, primarily because the CAF has an increased pore (10-50 Å) volume. The breakthrough tests show that the CAF filter is ten times more effective over the GAC filter in removing the atrazine to below the current USEPA standard of 3 ppb. The CAF filter also shows a better competitive adsorption of atrazine over the GAC filter in the presence of 50 times higher concentration of humic acid. Such a filter can be regenerated to 90% of its original activity by heating at 350 °C in air.

Original languageEnglish (US)
Pages (from-to)3375-3380
Number of pages6
JournalJournal of Materials Chemistry
Volume16
Issue number33
DOIs
StatePublished - Aug 28 2006

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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