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Author:

Zhao, Shan (Zhao, Shan.) | Huang, Gordon (Huang, Gordon.) | Wei, Jia (Wei, Jia.) (Scholars:魏佳) | An, Chunjiang (An, Chunjiang.) | Zhang, Peng (Zhang, Peng.)

Indexed by:

EI Scopus SCIE

Abstract:

The effectiveness of gemini-modified palygorskite (PGS) as the novel remediation material in polycyclic aromatic hydrocarbons (PAHs)-contaminated water remediation was revealed and examined. The sorption behavior of gemini surfactants at the PGS/aqueous interface was addressed using a developed two-step adsorption and partition model (TAPM). The characterizations of gemini-modified PGS were investigated using infrared spectroscopy, cationic exchange capacity, and surface area analysis. The effects of pH, ionic strength, humic acid, and temperature on sorption of phenanthrene (PHE) to untreated and modified PGS were systematically studied. Analysis of the equilibrium data indicated that the sorption isotherms of gemini fitted TAPM well. The modification of PGS with gemini surfactants provided a favorable partition medium for PHE and enhanced PHE retention in solid particles. The solution parameters played significant effects on PHE sorption to the modified PGS. The sorption isotherms of PHE on PGS at different temperatures well fitted the Freundlich equation. Thermodynamic calculations confirmed that the sorption process of PHE on modified PGS was spontaneous and exothermic from 293 to 303 K. It is revealed that the modification with gemini surfactants probably offered some unique surface characteristics to the clay mineral as a new type of remediation material. This can provide a reference to the potential application of PGS in PAH-contaminated water remediation process.

Keyword:

Gemini surfactant Modeling Palygorskite Sorption Phenanthrene

Author Community:

  • [ 1 ] [Zhao, Shan]Univ Regina, Inst Energy Environm & Sustainabil Res, UR NCEPU, Regina, SK S4S 0A2, Canada
  • [ 2 ] [Huang, Gordon]Univ Regina, Inst Energy Environm & Sustainabil Res, UR NCEPU, Regina, SK S4S 0A2, Canada
  • [ 3 ] [An, Chunjiang]Univ Regina, Inst Energy Environm & Sustainabil Res, UR NCEPU, Regina, SK S4S 0A2, Canada
  • [ 4 ] [Zhang, Peng]Univ Regina, Inst Energy Environm & Sustainabil Res, UR NCEPU, Regina, SK S4S 0A2, Canada
  • [ 5 ] [Huang, Gordon]North China Elect Power Univ, Inst Energy Environm & Sustainabil Res, UR NCEPU, Beijing 102206, Peoples R China
  • [ 6 ] [Wei, Jia]Beijing Univ Technol, Key Lab Beijing Water Qual Sci & Water Environm R, Beijing 100124, Peoples R China

Reprint Author's Address:

  • [Huang, Gordon]Univ Regina, Inst Energy Environm & Sustainabil Res, UR NCEPU, Regina, SK S4S 0A2, Canada

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Source :

WATER AIR AND SOIL POLLUTION

ISSN: 0049-6979

Year: 2016

Issue: 1

Volume: 227

2 . 9 0 0

JCR@2022

ESI Discipline: ENVIRONMENT/ECOLOGY;

ESI HC Threshold:246

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count: 12

SCOPUS Cited Count: 19

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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