Equilibrium isotherm studies for the sorption of benzene, toluene, and phenol onto organo-zeolites and as-synthesized MCM-41

被引:202
作者
Ghiaci, M [1 ]
Abbaspur, A
Kia, R
Seyedeyn-Azad, F
机构
[1] Isfahan Univ Technol, Dept Chem, Esfahan 84156, Iran
[2] Univ Isfahan, Dept Chem Engn, Esfahan 81744, Iran
关键词
adsorption; benzene; toluene; phenol; ZSM-5; MCM-41; natural clinoptilolite; HDTMA bromide; CPB;
D O I
10.1016/j.seppur.2004.03.001
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Nonionic organic contaminants (NOCs) such as benzene, toluene, and phenol from contaminated wastewater can be effectively adsorbed by organo-zeolites. Organo-zeolites were prepared from synthetic ZSM-5 and natural zeolites, by exchanging the quaternary amines, i.e. hexadecyltrimethylammonium (HDTMA) bromide and n-cetylpyridinium bromide (CPB). The maximum adsorption of CPB onto these zeolites is in the order of clinoptilolite >ZSM-5-88 (SiO2/Al2O3 = 88) > ZSM-5-31 (SiO2/Al2O3 = 3 1) which is mainly dependent on the external cation exchange capacity (ECEC) of each zeolite. Batch adsorption experiment was carried out to remove benzene, toluene, and phenol from aqueous solution using the above-mentioned organo-zeolites. In addition, as-synthesized MCM-41 molecular sieve was employed for removal of organic contaminants from aqueous solution. The experimental results were fitted to the Langmuir, Freundlich, Redlich-Peterson and linear equation isotherms to obtain the characteristic parameters of each model. Our resultant data showed that nonlinear form of Langmuir, the Freundlich and Redlich-Peterson could be fitted well with sorption data in most cases. According to the evaluation using the Langmuir equation, the maximum organics adsorption by synthesized MCM-41 was much greater than that of the natural clinoptilolite and ZSM-5 zeolites. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:217 / 229
页数:13
相关论文
共 33 条
  • [1] Barrer RM, 1978, ZEOLITES CLAY MINERA, P5
  • [2] A NEW FAMILY OF MESOPOROUS MOLECULAR-SIEVES PREPARED WITH LIQUID-CRYSTAL TEMPLATES
    BECK, JS
    VARTULI, JC
    ROTH, WJ
    LEONOWICZ, ME
    KRESGE, CT
    SCHMITT, KD
    CHU, CTW
    OLSON, DH
    SHEPPARD, EW
    MCCULLEN, SB
    HIGGINS, JB
    SCHLENKER, JL
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1992, 114 (27) : 10834 - 10843
  • [3] SORPTION CHARACTERISTICS OF ORGANIC-COMPOUNDS ON HEXADECYLTRIMETHYLAMMONIUM-SMECTITE
    BOYD, SA
    MORTLAND, MM
    CHIOU, CT
    [J]. SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1988, 52 (03) : 652 - 657
  • [4] ATTENUATING ORGANIC CONTAMINANT MOBILITY BY SOIL MODIFICATION
    BOYD, SA
    LEE, JF
    MORTLAND, MM
    [J]. NATURE, 1988, 333 (6171) : 345 - 347
  • [5] Breck D. W., 1973, Zeolite Molecular Sieves: Structure, Chemistry, and Use
  • [6] Controlling the channel diameter of the mesoporous molecular sieve MCM-41
    Cheng, CF
    Zhou, WZ
    Park, DH
    Klinowski, J
    Hargreaves, M
    Gladden, LF
    [J]. JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1997, 93 (02): : 359 - 363
  • [7] PHYSICAL CONCEPT OF SOIL-WATER EQUILIBRIA FOR NON-IONIC ORGANIC-COMPOUNDS
    CHIOU, CT
    PETERS, LJ
    FREED, VH
    [J]. SCIENCE, 1979, 206 (4420) : 831 - 832
  • [8] PARTITION EQUILIBRIA OF NON-IONIC ORGANIC-COMPOUNDS BETWEEN SOIL ORGANIC-MATTER AND WATER
    CHIOU, CT
    PORTER, PE
    SCHMEDDING, DW
    [J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1983, 17 (04) : 227 - 231
  • [9] Freundlich H, 1906, Z PHYS CHEM-STOCH VE, V57, P385
  • [10] Investigation of thermodynamic parameters of cetyl pyridinium bromide sorption onto ZSM-5 and natural clinoptilolite
    Ghiaci, M
    Kia, R
    Kalbasi, RJ
    [J]. JOURNAL OF CHEMICAL THERMODYNAMICS, 2004, 36 (02) : 95 - 100