The process by which progesterone in an ethanol solution is retained by four carbonaceous materials involves a reversible mechanism that conforms to a kinetic equation of unity partial order in both the progesterone concentration in solution, the coverage fraction (theta) of the adsorbing surface and (1 - theta). Over the temperature range 10-40 degreesC, the specific rate constant varies from 5.29 x 10(-4) to 44.85 x 10(-4) s(-1). The formation of the activated species involved in the adsorption process is an endothermal, exoentropic step. The rate of the adsorption-desorption process is primarily determined by diffusion of progesterone molecules in the pores of the sorbent. (C) 2003 Elsevier B.V. All rights reserved.
机构:
Beijing Normal Univ, Coll Environm, State Key Joint Lab Environm Simulat & Pollut Con, CEEER URBNU, Beijing 100875, Peoples R China
Univ Regina, Fac Engn & Appl Sci, Regina, SK S4S 0A2, CanadaBeijing Normal Univ, Coll Environm, State Key Joint Lab Environm Simulat & Pollut Con, CEEER URBNU, Beijing 100875, Peoples R China
Luo, Bin
Huang, Guohe
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Beijing Normal Univ, Coll Environm, State Key Joint Lab Environm Simulat & Pollut Con, CEEER URBNU, Beijing 100875, Peoples R China
Univ Regina, Fac Engn & Appl Sci, Regina, SK S4S 0A2, CanadaBeijing Normal Univ, Coll Environm, State Key Joint Lab Environm Simulat & Pollut Con, CEEER URBNU, Beijing 100875, Peoples R China
Huang, Guohe
Yao, Yao
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Univ Regina, Fac Engn & Appl Sci, Regina, SK S4S 0A2, CanadaBeijing Normal Univ, Coll Environm, State Key Joint Lab Environm Simulat & Pollut Con, CEEER URBNU, Beijing 100875, Peoples R China
Yao, Yao
An, Chunjiang
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Concordia Univ, Dept Bldg Civil & Environm Engn, Montreal, PQ H3G 1M8, CanadaBeijing Normal Univ, Coll Environm, State Key Joint Lab Environm Simulat & Pollut Con, CEEER URBNU, Beijing 100875, Peoples R China
An, Chunjiang
Li, Wei
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North China Elect Power Univ, MOE Key Lab Resources & Environm Syst Optimizat, Beijing 102206, Peoples R ChinaBeijing Normal Univ, Coll Environm, State Key Joint Lab Environm Simulat & Pollut Con, CEEER URBNU, Beijing 100875, Peoples R China
Li, Wei
Zheng, Rubing
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North China Elect Power Univ, MOE Key Lab Resources & Environm Syst Optimizat, Beijing 102206, Peoples R ChinaBeijing Normal Univ, Coll Environm, State Key Joint Lab Environm Simulat & Pollut Con, CEEER URBNU, Beijing 100875, Peoples R China
Zheng, Rubing
Zhao, Kai
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Univ Regina, Fac Engn & Appl Sci, Regina, SK S4S 0A2, CanadaBeijing Normal Univ, Coll Environm, State Key Joint Lab Environm Simulat & Pollut Con, CEEER URBNU, Beijing 100875, Peoples R China
机构:
Indonesian Inst Sci, Res Ctr Chem, Tangerang Selatan 15314, Banten, IndonesiaIndonesian Inst Sci, Res Ctr Chem, Tangerang Selatan 15314, Banten, Indonesia
Sari, Ajeng Arum
Amriani, Feni
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Indonesian Inst Sci, Res Ctr Chem, Tangerang Selatan 15314, Banten, IndonesiaIndonesian Inst Sci, Res Ctr Chem, Tangerang Selatan 15314, Banten, Indonesia
Amriani, Feni
Muryanto, Muryanto
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Indonesian Inst Sci, Res Ctr Chem, Tangerang Selatan 15314, Banten, IndonesiaIndonesian Inst Sci, Res Ctr Chem, Tangerang Selatan 15314, Banten, Indonesia
Muryanto, Muryanto
Triwulandari, Evi
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Indonesian Inst Sci, Res Ctr Chem, Tangerang Selatan 15314, Banten, IndonesiaIndonesian Inst Sci, Res Ctr Chem, Tangerang Selatan 15314, Banten, Indonesia
Triwulandari, Evi
Sudiyani, Yanni
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Indonesian Inst Sci, Res Ctr Chem, Tangerang Selatan 15314, Banten, IndonesiaIndonesian Inst Sci, Res Ctr Chem, Tangerang Selatan 15314, Banten, Indonesia
Sudiyani, Yanni
Barlianti, Vera
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Indonesian Inst Sci, Res Ctr Chem, Tangerang Selatan 15314, Banten, IndonesiaIndonesian Inst Sci, Res Ctr Chem, Tangerang Selatan 15314, Banten, Indonesia