Adsorption of some heavy metal ions on sulfate- and phosphate-modified kaolin
作者： K.O. Adebowale , I.E. Unuabonah , B.I. Olu-Owolabi
DOI: 10.1016/J.CLAY.2004.10.003
关键词:
摘要: Abstract Kaolin (bright white lumps) from Ubulu-Ukwu in Delta State of Nigeria was modified with 200 μg mL −1 phosphate and sulphate anions to give phosphate- sulfate-modified adsorbents, respectively. The adsorption four metal ions (Pb 2+ , Cd Zn Cu ) studied as a function concentration. showed stronger affinity for the phosphate-modified adsorbent Pb giving an average 93.28%, 80.94%, 68.99%, 61.44% uptake capacity. order preference various adsorbents shown by follows: >Cu >Zn >Cd Desorption studies that adsobent had highest ions, followed clay while unmodified least affinity. experimental data were fitted both Langmuir Freundlich models.
elsevier.com
sci-hub.se 参考文章(15)
Gaston Charlot, Denise Bézier, Quantitative inorganic analysis Methuen , Wiley. ,(1957)
The Importance of Chemical “Speciation” in Environmental Processes Springer Berlin Heidelberg. ,(1986) , 10.1007/978-3-642-70441-3
Jaco Vangronsveld, Scott D. Cunningham, Metal-contaminated soils : In situ inactivation and phytorestoration Springer , R.G. Landes. ,(1998)
Ronald Fuge, Fiona M. Pearce, Nicholas J.G. Pearce, William T. Perkins, Geochemistry of Cd in the secondary environment near abandoned metalliferous mines, Wales Applied Geochemistry. ,vol. 8, pp. 29- 35 ,(1993) , 10.1016/S0883-2927(09)80006-1
YB Ma, NC Uren, None, Dehydration, Diffusion and Entrapment of Zinc in Bentonite Clays and Clay Minerals. ,vol. 46, pp. 132- 138 ,(1998) , 10.1346/CCMN.1998.0460202
Stuart S. Barton, The adsorption of methylene blue by active carbon Carbon. ,vol. 25, pp. 343- 350 ,(1987) , 10.1016/0008-6223(87)90005-4
Alois Lottaz, André Lavanchy, X-ray computer-tomography, a new experimental method for the study of dynamic sorption processes on activated carbon Carbon. ,vol. 25, pp. 533- 539 ,(1987) , 10.1016/0008-6223(87)90194-1
A.S.R. Juo, S.A. Ayanlaja, J.A. Ogunwale, An evaluation of cation exchange capacity measurements for soils in the tropics Communications in Soil Science and Plant Analysis. ,vol. 7, pp. 751- 761 ,(1976) , 10.1080/00103627609366684
S. P. Singh, L. Q. Ma, W. G. Harris, Heavy metal interactions with phosphatic clay: sorption and desorption behavior. Journal of Environmental Quality. ,vol. 30, pp. 1961- 1968 ,(2001) , 10.2134/JEQ2001.1961
Anthony J. Paulson, The transport and fate of Fe, Mn, Cu, Zn, Cd, Pb and SO4 in a groundwater plume and in downstream surface waters in the Coeur d'Alene Mining District, Idaho, U.S.A. Applied Geochemistry. ,vol. 12, pp. 447- 464 ,(1997) , 10.1016/S0883-2927(97)00013-9