Removal of phenolic pollutants from water utilizing mangifera indica (mango) seed waste and cement fixation

Amit Bhatnagar, A. K. Minocha, Eva Kumar, Mika Sillanpää, Byong Hun Jeon

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

A process for the removal of two chlorophenols (2-chlorophenol and 2,4-dichlorophenol) from water using surface modified mango seed waste by adsorption process followed by cement fixation of the phenols-laden adsorbent is investigated. The two main objectives of this study were to develop efficient adsorbent utilizing mango seed waste by physiochemical activation and to an environmentally-friendly disposal of phenols-laden adsorbent into cement by a fixation process. The results of the present study reveal that the modified mango seed adsorbent showed an efficient adsorption potential for chlorophenols removal from water. The maximum adsorption potential of modified mango seed adsorbent for 2-chlorophenol and 2,4-dichlorophenol was 40.6 and 72.3 mg g-1, respectively at 25°C. Adsorption kinetic data of chlorophenols adsorption on mango seed adsorbent could be described more favorably by a pseudo-second-order kinetic model. After the adsorption studies, the phenol-laden adsorbent was immobilized in cement for its ultimate disposal. Leachates from the fixed phenols-laden adsorbent exhibit phenols concentrations lower than the drinking water standards. Results from this study suggest the potential utility of agricultural wastes as one of the most promising activated carbon precursors for phenols removal from water and wastewater and the safe disposal of phenol-laden adsorbent into cement by fixation process.

Original languageEnglish
Pages (from-to)3150-3169
Number of pages20
JournalSeparation Science and Technology
Volume44
Issue number13
DOIs
Publication statusPublished - Jan 2009
Externally publishedYes

Keywords

  • Adsorption study
  • Cement fixation
  • Chlorophenols
  • Mango seed waste
  • Surface modification

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • Process Chemistry and Technology
  • Filtration and Separation

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