Comparative evaluation for the sorption capacity of four carbonaceous sorbents to phenol

Ding Feng Jin, Yuan Yuan Xu, Ming Zhang, Yeong Sang Jung, Yong Sik Ok

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Sorption kinetics and isotherms of phenol by four carbonaceous sorbents (activated carbon (AC), mesoporous carbon (MPC), bamboo biochar (BBC) and oak wood biochar (OBC)) were compared in this study. MPC has the fastest sorption rate and initial sorption potential, which were indicated by sorption rate constants and initial sorption rate "h" in a pseudo-second-order kinetic model. The ordered and straight pore structure of MPC facilitated the accessibility of phenol. The AC showed the greatest sorption capacity towards phenol with maximum sorption of 123 mg/g as calculated by the Langmuir model. High surface area, complexity of pore structure, and the strong binding force of the π-π electron-donor-acceptor interaction between phenol molecules and AC were the main mechanisms. The BBC and OBC had much slower sorption and lower sorption capacity (33.04 and 29.86 mg/g, respectively), compared to MPC (73.00 mg/g) and AC, indicating an ineffective potential for phenol removal from water.

Original languageEnglish
Pages (from-to)18-25
Number of pages8
JournalChemical Speciation and Bioavailability
Volume28
Issue number1-4
DOIs
Publication statusPublished - 2016 Jan 12
Externally publishedYes

Keywords

  • Black carbon
  • Carbonaceous sorbents
  • Isotherms
  • Kinetics
  • Phenol
  • Sorption

ASJC Scopus subject areas

  • Toxicology
  • Health, Toxicology and Mutagenesis
  • Chemical Health and Safety

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