Photocatalytic process by immobilized carbon black/ZnO nanocomposite for dye removal from aqueous medium: Optimization by response surface methodology

R. Darvishi Cheshmeh Soltani, A. Rezaee, A. R. Khataee*, M. Safari

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

123 Citations (Scopus)

Abstract

A rectangular photo-reactor equipped with carbon black (CB)/ZnO nanocomposite film was used for photodegradation of methyl orange. Central composite design was used for evaluation of the effects of initial dye concentration, reaction time, CB/ZnO ratio and initial pH. The high correlation coefficients (R2=0.954 and adjusted R2=0.912) obtained by analysis of variance (ANOVA) demonstrated close fit between the predicted and experimental values. The initial dye concentration, reaction time, CB/ZnO ratio and initial pH were 13mg/L, 95min, 0.05 and 5, respectively for 80% decolorization efficiency. The result of TOC analysis showed that the process allowed 55.79% mineralization under optimized conditions.

Original languageEnglish
Pages (from-to)1861-1868
Number of pages8
JournalJournal of Industrial and Engineering Chemistry
Volume20
Issue number4
DOIs
Publication statusPublished - 25 Jul 2014
Externally publishedYes

Keywords

  • Carbon black
  • Experimental design
  • Photocatalysis
  • ZnO nanoparticles

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