Principle of superposition applied to adsorption experiments to differentiate strong binding mechanisms

Research output: Contribution to journalArticle

Abstract

A series of adsorption experiments were conducted with naphthalene and 1-naphthol to quantify the processes responsible for the fraction of nonextracted test compounds (Q(NONEX)) from a sandy soil. After a 2 d adsorption period naphthalene was not susceptible to strong binding reactions, instead the nonextracted fraction was caused by rate-limited diffusive processes. The principle of superposition was then applied to the experimental results obtained with 1-naphthol to estimate the contribution of individual processes responsible for the nonextracted fraction. Mass transfer-limited processes accounted for 4.3 ± 1.7% of Q(NONEX) of 1-naphthol in this soil. Biologically mediated oxidative coupling and mineral surface-catalyzed coupling reactions accounted for 49.0 ± 7.3% and 46.7 ± 8.0% Q(NONEX) of 1-naphthol in this soil, respectively.

Original languageEnglish (US)
Pages (from-to)74-82
Number of pages9
JournalAnnals of the New York Academy of Sciences
Volume829
DOIs
StatePublished - Nov 21 1997

All Science Journal Classification (ASJC) codes

  • Neuroscience(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • History and Philosophy of Science

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