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Benzene Vapor Sorption by Organobentonites From Ambient Air

Published online by Cambridge University Press:  01 January 2024

Lizhong Zhu  and
Yuhong Su
Lizhong Zhu*
Affiliation:
Department of Environmental Science, Xixi Campus, Zhejiang University, Hangzhou, China 310028
Yuhong Su
Affiliation:
Department of Chemistry, Xinjiang University, Ulumngi, Xinjiang, China 830046
*
*E-mail address of corresponding author: lzzhu@mail.hz.zj.cn
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Abstract

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A number of organobentonites were synthesized by exchanging the metal ions in bentonite with the cationic surfactant, cetyltrimethylammonium bromide. Samples of natural bentonite and organobentonites were analyzed for their organic carbon contents, examined by X-ray diffraction (XRD) for interlayer spacings, and viewed using a scanning electron microscope (SEM) for surface morphology. The sorption isotherm of benzene vapor from ambient air (relative humidity (RH) = 45 ± 5%) on natural bentonite was nonlinear; however, the isotherms of benzene from ambient air onto organobentonites were virtually linear over a large range of relative vapor concentrations. The sorption capacities of air-dried organobentonites were far greater than that of the natural bentonite. For air-dried organobentonites, the sorption coefficients correlated positively with the sample organic carbon contents and negatively with the sample BET-N2 surface areas. The heats of benzene vapor sorption onto air-dried organobentonites were less exothermic than the heat of benzene-vapor condensation. These findings suggest that benzene vapor sorption by air-dried organobentonites occurs essentially by vapor partition into the sample organic-matter fractions. This offers a potential application of organobentonites for the removal of organic vapors from flue gases and for assessing the efficiency of vapor removal.

Keywords

BenzeneCetyltrimethylammonium bromideFlue GasOrganobentoniteVapor Sorption
Type
Research Article
Information
Clays and Clay Minerals , Volume 50 , Issue 4 , August 2002 , pp. 421 - 427
Copyright
Copyright © 2002, The Clay Minerals Society

References

Barrer, R.M. and Macleod, D.M., (1955) Activation of montmorillonite by ion exchange and sorption complexes of tetraalkyl ammonium montmorillonites Journal of the Chemical Society, Faraday Transactions I 51 1290–1300 10.1039/tf9555101290.CrossRefGoogle Scholar
Barrer, R.M. and Perry, G.S., (1961) Sorption of mixtures, and sel ectivity in alkylammonium montmorillonites. Part II. Tetramethylammonium montmorillonite Journal of the Chemical Society 57 850–858 10.1039/jr9610000850.CrossRefGoogle Scholar
Boyd, S.A. Lee, J.-F. and Mortland, M.M., (1988) Attenuating organic contaminant mobility by soil modification Nature 333 345–347 10.1038/333345a0.CrossRefGoogle Scholar
Boyd, S.A. Sun, S. Lee, J.-F. and Mortland, M.M., (1988) Pentachlorophenol sorption by organoclays Clays and Clay Minerals 36 125–130 10.1346/CCMN.1988.0360204.CrossRefGoogle Scholar
Boyd, S.A. Mortland, M.M. and Chiou, C.T., (1988) Sorption characteristics of organic compounds on hexadecyltrimethylammonium-smectite Soil Science Society of America Journal 52 652–657 10.2136/sssaj1988.03615995005200030010x.CrossRefGoogle Scholar
Chiou, C.T. and Shoup, T.D., (1985) Soil sorption of organic vapors and effects of humidity on sorptive mechanism and capacity Environmental Science and Technology 19 1196–1200 10.1021/es00142a010.CrossRefGoogle ScholarPubMed
Chiou, C.T. Peters, L.J. and Freed, V.H., (1979) A physical concept of soil-water equilibria for nonionic organic compounds Science 206 831–832 10.1126/science.206.4420.831.CrossRefGoogle ScholarPubMed
Chiou, C.T. Porter, P.E. and Schmedding, D.W., (1983) Partition equilibria of nonionic organic compounds between soil organic matter and water Environmental Science and Technology 17 227–231 10.1021/es00110a009.CrossRefGoogle Scholar
Chiou, C.T. Shoup, T.D. and Porter, P.E., (1985) Mechanistic roles of soil humus and minerals in the sorption of organic compounds from aqueous and organic solutions Organic Geochemstry 8 9–14 10.1016/0146-6380(85)90045-2.CrossRefGoogle Scholar
Holsen, T.M. Taylor, E.R. Seo, Y.-C. and Anderson, P.R., (1991) Removal of sparingly soluble organic chemicals from aqueous solutions with surfactant-coated ferrihydrite Environmental Science and Technology 25 1585–1589 10.1021/es00021a009.CrossRefGoogle Scholar
Jaynes, W.F. and Boyd, S.A., (1991) Clay mineral type and organic compound sorption by hexadecyltrimethylammonium-exchanged clays Soil Science Society of America Journal 55 43–48 10.2136/sssaj1991.03615995005500010007x.CrossRefGoogle Scholar
Karickhoff, S.W. Brown, D.S. and Scott, T., (1979) Sorption of hydrophobic pollutants on natural sediments Water Research 13 241–248 10.1016/0043-1354(79)90201-X.CrossRefGoogle Scholar
Lee, J.-F. Mortland, M.M. Boyd, S.A. and Chiou, C.T., (1989) Shape-selective adsorption of aromatic molecules from water by tetramethylammonium-smectite Journal of the Chemical Society, Faraday Transaction 1 85 2953–2962 10.1039/f19898502953.CrossRefGoogle Scholar
Lee, J.-F. Mortland, M.M. Chiou, C.T. Kile, D.E. and Boyd, S.A., (1989) Adsorption of benzene, toluene, and xylene by two tetramethylammonium-smectites having different charge densities Clays and Clay Minerals 38 113–120 10.1346/CCMN.1990.0380201.CrossRefGoogle Scholar
Lin, T.-F. Van Loy, M.D.V. and Nazaroff, W.W., (1996) Gasphase transport and sorption of benzene in soil Environmental Science and Technology 30 2178–2186 10.1021/es9505762.CrossRefGoogle Scholar
Means, J.C. Wood, S.G. Hassett, J.J. and Banwart, W.L., (1980) Sorption of polynuclear aromatic hydrocarbons by sediments and soils Environmental Science and Technology 14 1524–1528 10.1021/es60172a005.CrossRefGoogle ScholarPubMed
Park, J.-W. and Jaffe, P.R., (1993) Partitioning of three nonionic organic compounds between adsorbed surfactants, micelles, and water Environmental Science and Technology 27 2559–2565 10.1021/es00048a038.CrossRefGoogle Scholar
Pennell, K.D. Rhue, R.D. Rao, P.S.C. and Johnston, C.T., (1992) Vapor-phase sorption of p-xylene and water on soils and clay minerals Environmental Science and Technology 26 756–763 10.1021/es00028a014.CrossRefGoogle Scholar
Schwarzenbach, R.P. and Westall, J., (1981) Transport of nonpolar organic compounds from surface water to ground-water: Laboratory sorption studies Environmental Science and Technology 15 1360–1367 10.1021/es00093a009.CrossRefGoogle Scholar
Sheng, G. Xu, S. and Boyd, S.A., (1996) Mechanism(s) controlling sorption of neutral organic contaminants by surfactant-derived and natural organic matter Environmental Science and Technology 30 1553–1557 10.1021/es9505208.CrossRefGoogle Scholar
Smith, J.A. and Galán, A., (1995) Sorption of nonionic contaminants to single and dual organic cation bentonites from water Environmental Science and Technology 29 685–692 10.1021/es00003a016.CrossRefGoogle ScholarPubMed
Smith, J.A. and Jaffé, P.R., (1991) Comparison of tetrachloromethane sorption to an alkyl-ammonium-clay and an alkyldiammonium-clay Environmental Science and Technology 25 2054–2058 10.1021/es00024a010.CrossRefGoogle Scholar
Smith, J.A. Jaffé, P.R. and Chiou, C.T., (1990) Effect of ten quaternary ammonium cations on tetrachloromethane sorption to clay from water Environmental Science and Technology 24 1167–1172 10.1021/es00078a003.CrossRefGoogle Scholar
Smith, J.A. Chiou, C.T. Kammer, J.A. and Kile, D.E., (1990) Effect of moisture on the sorption of trichloroethene vapor to vadose-zone soil at Picatinny Arsenal, New Jersey Environmental Science and Technology 24 676–683 10.1021/es00075a010.CrossRefGoogle Scholar
Sun, S. and Jaffé, P.R., (1996) Sorption of phenanthrene from water onto alumina coated with dianionic surfactants Environmental Science and Technology 30 2906–2913 10.1021/es950768x.CrossRefGoogle Scholar
Xu, S. and Boyd, S.A., (1995) Cationic surfactant adsorption by swelling and non-swelling layer silicates Langmuir 11 2508–2514 10.1021/la00007a033.CrossRefGoogle Scholar
Xu, S. Sheng, G. and Boyd, S.A., (1997) Use of organoclays in pollution abatement Advances of Agronomy 59 25–62 10.1016/S0065-2113(08)60052-8.CrossRefGoogle Scholar
Zhu, L. and Chen, B., (2000) Sorption behavior of p-nitrophenol on the interface between anion-cation organobentonite and water Environmental Science and Technology 34 2997–3002 10.1021/es991460z.CrossRefGoogle ScholarPubMed
Zhu, L. Chen, B. Li, M. and Zhang, S., (1999) The characteristics and mechanisms for dual-cation organobentonites to sorb organic compounds from water Acta Scinica Circumstantiae 19 597 603.Google Scholar
Zhu, L. Chen, B. Shen, H. and Chen, X., (1999) Property of dual-cation organobentonites to remove organic compounds from water China Environmental Science 19 325 329.Google Scholar
Zhu, L. Chen, B. and Shen, X., (2000) Sorption of phenol, p-nitrophenol, and aniline to dual-cation organobentonites from water Environmental Science and Technology 34 468–475 10.1021/es990177x.CrossRefGoogle Scholar