Competitive adsorption of benzoic acid and p -nitrophenol onto activated carbon: Isotherm and breakthrough curves

Jia Ming Chern, Yi Wen Chien

研究成果: 雜誌貢獻文章同行評審

81 引文 斯高帕斯(Scopus)

摘要

Three series of batch tests at 25°C were performed to determine the benzoic acid and p-nitrophenol (PNP) binary adsorption isotherms onto GAC in the aqueous solutions and the experimental data were fitted to the extended Langmuir isotherm model successfully. The experimental data and the isotherm model parameters showed that the GAC used in this study had a higher affinity to PNP than benzoic acid. Three column tests were performed to determine the breakthrough curves and effluent solution pH with varying feed compositions. According to the experimental results, the weakly adsorbed BA exhibited an intermediate zone of effluent concentration higher than its feed one; the effluent solution pH could serve as a good indicator for breakthrough. The breakthrough curves with varying feed compositions could be predicted by the non-linear wave propagation theory satisfactorily. Only the adsorption isotherm models were required to construct the composition path diagram with which the breakthrough curves could be predicted.

原文英語
頁(從 - 到)2347-2356
頁數10
期刊Water Research
37
發行號10
DOIs
出版狀態已發佈 - 1月 1 2003
對外發佈

ASJC Scopus subject areas

  • 生態建模
  • 水科學與技術
  • 廢物管理和處置
  • 污染

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