Adsorption isotherms and fractal dimension of modified rectorite

Yun Huang; Xiaoyan Ma; Yahong Zhu

Adsorption isotherms and fractal dimension of modified rectorite

Yun Huang, Xiaoyan Ma, Yahong Zhu

School of Chemistry and Chemical Engineering

Northwestern Polytechnical University Xian

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Natural reclorile (REC) was modified with dodecyl benzyl dimethyl ammonium chloride [C₁₂H₂₅(CH₃)₂ (C₆H₅-CH₂)NCl, 1227], hexadecyl trimethyl ammonium brornide[C₁₆H₃₃(CH₃)₃ NBr, 1631] and octadecyl trimethyl ammonium bromide [C₁₈H₃₇(CH₃)₃ NBr, 1831], respectively. Then three kinds of organic-modified rectorite were obtained: 1.227-REC, 1631-REC, 1831-REC which were used as adsorbents for phenol or Cr(VI) ions in water. A comparison of adsorption isotherms and of the isotherm fractal model shows that the adsorption reactions for phenol and Cr(VI) are caused by static electric attraction between the cation and anion and surface complexation reaction respectively. The fractal calculation for active absorption sites of absorbents shows that the fractal dimensions of 1227-REC and 1631-REC are respectively 2.85 and 2.91 for phenol and those of 1227-REC, 1631-REC and 1831-REC are respectively 2.65, 2.86 and 2.73 for Cr(VI).

Original language	English
Pages (from-to)	1381-1384
Number of pages	4
Journal	Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society
Volume	33
Issue number	11
State	Published - Nov 2005

Keywords

Chromic ion
Fractal dimension
Phenol
Rectorite
Surfactant

Cite this

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title = "Adsorption isotherms and fractal dimension of modified rectorite",

abstract = "Natural reclorile (REC) was modified with dodecyl benzyl dimethyl ammonium chloride [C12H25(CH3)2 (C6H5-CH2)NCl, 1227], hexadecyl trimethyl ammonium brornide[C16H33(CH3)3 NBr, 1631] and octadecyl trimethyl ammonium bromide [C18H37(CH3)3 NBr, 1831], respectively. Then three kinds of organic-modified rectorite were obtained: 1.227-REC, 1631-REC, 1831-REC which were used as adsorbents for phenol or Cr(VI) ions in water. A comparison of adsorption isotherms and of the isotherm fractal model shows that the adsorption reactions for phenol and Cr(VI) are caused by static electric attraction between the cation and anion and surface complexation reaction respectively. The fractal calculation for active absorption sites of absorbents shows that the fractal dimensions of 1227-REC and 1631-REC are respectively 2.85 and 2.91 for phenol and those of 1227-REC, 1631-REC and 1831-REC are respectively 2.65, 2.86 and 2.73 for Cr(VI).",

keywords = "Chromic ion, Fractal dimension, Phenol, Rectorite, Surfactant",

author = "Yun Huang and Xiaoyan Ma and Yahong Zhu",

year = "2005",

month = nov,

language = "英语",

volume = "33",

pages = "1381--1384",

journal = "Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society",

issn = "0454-5648",

publisher = "Chinese Ceramic Society",

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TY - JOUR

T1 - Adsorption isotherms and fractal dimension of modified rectorite

AU - Huang, Yun

AU - Ma, Xiaoyan

AU - Zhu, Yahong

PY - 2005/11

Y1 - 2005/11

N2 - Natural reclorile (REC) was modified with dodecyl benzyl dimethyl ammonium chloride [C12H25(CH3)2 (C6H5-CH2)NCl, 1227], hexadecyl trimethyl ammonium brornide[C16H33(CH3)3 NBr, 1631] and octadecyl trimethyl ammonium bromide [C18H37(CH3)3 NBr, 1831], respectively. Then three kinds of organic-modified rectorite were obtained: 1.227-REC, 1631-REC, 1831-REC which were used as adsorbents for phenol or Cr(VI) ions in water. A comparison of adsorption isotherms and of the isotherm fractal model shows that the adsorption reactions for phenol and Cr(VI) are caused by static electric attraction between the cation and anion and surface complexation reaction respectively. The fractal calculation for active absorption sites of absorbents shows that the fractal dimensions of 1227-REC and 1631-REC are respectively 2.85 and 2.91 for phenol and those of 1227-REC, 1631-REC and 1831-REC are respectively 2.65, 2.86 and 2.73 for Cr(VI).

AB - Natural reclorile (REC) was modified with dodecyl benzyl dimethyl ammonium chloride [C12H25(CH3)2 (C6H5-CH2)NCl, 1227], hexadecyl trimethyl ammonium brornide[C16H33(CH3)3 NBr, 1631] and octadecyl trimethyl ammonium bromide [C18H37(CH3)3 NBr, 1831], respectively. Then three kinds of organic-modified rectorite were obtained: 1.227-REC, 1631-REC, 1831-REC which were used as adsorbents for phenol or Cr(VI) ions in water. A comparison of adsorption isotherms and of the isotherm fractal model shows that the adsorption reactions for phenol and Cr(VI) are caused by static electric attraction between the cation and anion and surface complexation reaction respectively. The fractal calculation for active absorption sites of absorbents shows that the fractal dimensions of 1227-REC and 1631-REC are respectively 2.85 and 2.91 for phenol and those of 1227-REC, 1631-REC and 1831-REC are respectively 2.65, 2.86 and 2.73 for Cr(VI).

KW - Chromic ion

KW - Fractal dimension

KW - Phenol

KW - Rectorite

KW - Surfactant

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M3 - 文章

AN - SCOPUS:30944444202

SN - 0454-5648

VL - 33

SP - 1381

EP - 1384

JO - Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society

JF - Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society

IS - 11

ER -

Adsorption isotherms and fractal dimension of modified rectorite

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