Wet peroxidation of resorcinol catalyzed by copper impregnated granular activated carbon

Vijayalakshmi Gosu, Archana Dhakar, Prerana Sikarwar, U. K.Arun Kumar, V. Subbaramaiah, Tian C Zhang

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The present article reports the treatment of resorcinol using a catalytic wet peroxidation (CWPO) process in the presence of copper impregnated granular activated carbon (Cu/GAC) with a bench-scale batch reactor. The typical physico-chemical properties of synthesized catalyst were characterized with different equipment and methods. 90% resorcinol removal and 81% of TOC removal was achieved at optimum conditions (pH = 6, the stoichiometric ratio of H2O2/resorcinol = 1.2, catalyst dose = 0.5 g/L, initial concentration of resorcinol = 100 mg/L, temperature = 70 °C and time t = 4 h). Fourier-transform infrared spectroscopy (FTIR) measurements revealed that GAC posses various conjugated hydrocarbon groups including aromatic hydrocarbons, carboxylic groups, carboxyl and carbonate. Cu/GAC catalyst has a surface smoother than that of pristine GAC. At neutral or natural pH (∼6.4) of resorcinol, CWPO of resorcinol is favorable by Cu/GAC catalyst. Catalyst stability study revealed that Cu/GAC sustain its catalytic reactivity to over 76% in the five cycles without any regeneration. The thermogravimetric analysis confirmed that 350 °C temperature found to be optimum for calcination of Cu/GAC without any major losses. The mineralization mechanism was proposed based on intermediates identified during CWPO reaction.

Original languageEnglish (US)
Pages (from-to)825-833
Number of pages9
JournalJournal of Environmental Management
Volume223
DOIs
StatePublished - Oct 1 2018

Fingerprint

Activated carbon
activated carbon
catalyst
copper
Copper
Catalysts
Aromatic hydrocarbons
Batch reactors
aromatic hydrocarbon
FTIR spectroscopy
Calcination
Chemical properties
Fourier transform infrared spectroscopy
Thermogravimetric analysis
chemical property
Carbonates
regeneration
temperature
Hydrocarbons
hydrocarbon

Keywords

  • Catalytic wet peroxidation (CWPO)
  • Cu/GAC
  • Mineralization
  • Resorcinol

ASJC Scopus subject areas

  • Environmental Engineering
  • Waste Management and Disposal
  • Management, Monitoring, Policy and Law

Cite this

Wet peroxidation of resorcinol catalyzed by copper impregnated granular activated carbon. / Gosu, Vijayalakshmi; Dhakar, Archana; Sikarwar, Prerana; Kumar, U. K.Arun; Subbaramaiah, V.; Zhang, Tian C.

In: Journal of Environmental Management, Vol. 223, 01.10.2018, p. 825-833.

Research output: Contribution to journalArticle

Gosu, Vijayalakshmi ; Dhakar, Archana ; Sikarwar, Prerana ; Kumar, U. K.Arun ; Subbaramaiah, V. ; Zhang, Tian C. / Wet peroxidation of resorcinol catalyzed by copper impregnated granular activated carbon. In: Journal of Environmental Management. 2018 ; Vol. 223. pp. 825-833.
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