fulltext.study @t Gmail

Effect of activated carbon surface chemistry on the activity of ZVI/AC catalysts for Fenton-like oxidation of phenol

Paper ID Volume ID Publish Year Pages File Format Full-Text
54430 47009 2015 7 PDF Available
Title
Effect of activated carbon surface chemistry on the activity of ZVI/AC catalysts for Fenton-like oxidation of phenol
Abstract

•Activated carbons with different amounts of surface oxygenated groups were prepared.•The presence of acidic oxygenated surface groups is not favorable for the catalytic activity of ZVI.•ZVI supported on AC having higher basicity yields the best phenol removal efficiency.

Activated carbons with different amounts of surface oxygenated groups were used as adsorbents or supports for zero-valent iron (ZVI) catalyst and tested in phenol adsorption and catalytic wet peroxide oxidation, respectively. The results revealed that the surface chemistry of the support plays an important role in phenol adsorption and in the catalytic performance of the respective iron-supported catalysts. ZVI is active when the support has only a limited amount of oxygenated groups on the surface. The presence of acidic oxygenated surface groups is not favorable for the catalytic activity of ZVI in phenol oxidation as well as for phenol adsorption. ZVI supported on activated carbon heat-treated at 900 °C yields the best phenol removal, reaching over 85% after 3 h, under the conditions tested: 150 mg L−1 of initial phenol concentration, initial pH set at 3, 30 °C, and the stoichiometric amount of hydrogen peroxide for achieving complete mineralization.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (112 K)Download as PowerPoint slide

Keywords
Activated carbons; Surface chemistry; Zero-valent iron; Phenol; Catalytic wet peroxide oxidation
First Page Preview
Effect of activated carbon surface chemistry on the activity of ZVI/AC catalysts for Fenton-like oxidation of phenol
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 240, Part A, 1 February 2015, Pages 73–79
Authors
, , , , , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis