These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Anodic Surface Treatment on Activated Carbons for Removal of Chromium(VI).
    Author: Park SJ, Kim JS.
    Journal: J Colloid Interface Sci; 2001 Jul 15; 239(2):380-384. PubMed ID: 11427002.
    Abstract:
    In this work, the effect of anodic surface treatment on activated carbons and its Cr(VI) adsorption properties were investigated under reaction-treatment time conditions with 35 wt% HCl solution. The acid-base surface values were determined by Boehm's titration technique. The pore and surface characteristics were studied in terms of BET volumetric measurement with N(2) adsorption. As an experimental result, the acidic surface functional groups of activated carbons increased with increasing the HCl reaction-treatment time. It was found that the surface characteristics, including specific surface area, total pore volume, net heat of adsorption, and BET's C, slightly decrease in anodic surface treatments on activated carbons. In addition, an increase in reaction-treatment time led to increases of the first rate (K(1)) of Cr(VI) adsorption and diffusion coefficient (D). These values are evidence that adsorption is controlled more by the acid-base interactions between electron-donor substances and acidized activated carbons as electron acceptor than by the pore and surface structures of activated carbons. Copyright 2001 Academic Press.
    [Abstract] [Full Text] [Related] [New Search]