Adsorption of antimony(V) on kaolinite as a function of pH, ionic strength and humic acid

The present work investigated the adsorption and mobility (desorption) of Sb(V) on kaolinite using batch experiments. The adsorption of Sb(V) on kaolinite was studied as a function of contact time, pH, ionic strength, humic acid (HA), initial Sb(V) concentration and temperature. Kinetic studies suggest that the equilibrium is achieved within 24 h. The adsorption of Sb(V) was strongly affected by changes in I at low ionic strength and unaffected at high ionic strength. The adsorption is weakly dependent on the presence of humic acid, but is strongly dependent on pH. Within the range tested, the optimal pH for Sb(V) adsorption is 3.6, and close to 75% removal can be achieved. Desorption is dependent on the original suspension pH. The addition sequence of Sb(V)/HA do not influence the adsorption of Sb(V) on kaolinite. The adsorption data fit both the Freundlich and Langmuir isotherm. The thermodynamic parameters (ΔH0, ΔS0 and ΔG0) were calculated from the temperature dependence, and the results suggest the endothermic and spontaneous nature of the process.

[1]  Montserrat Filella,et al.  Antimony in the environment: a review focused on natural waters: II. Relevant solution chemistry , 2002 .

[2]  M. He.  Distribution and phytoavailability of antimony at an antimony mining and smelting area, Hunan, China , 2007, Environmental geochemistry and health.

[3]  D. Mcconchie,et al.  Adsorption of arsenic from water using activated neutralized red mud. , 2004, Environmental science & technology.

[4]  M. Gräfe,et al.  Adsorption of Arsenate (V) and Arsenite (III) on Goethite in the Presence and Absence of Dissolved Organic Carbon , 2001 .

[5]  M. J. Kelley,et al.  Applications of X-ray Absorption Fine Structure Spectroscopy to Soils , 1994 .

[6]  W. Pickering,et al.  Specific sorption of antimony (III) by the hydrous oxides of Mn, Fe, and Al , 1990 .

[7]  Xiangke Wang,et al.  Influence of pH, soil humic/fulvic acid, ionic strength and foreign ions on sorption of thorium(IV) onto γ-Al2O3 , 2007 .

[8]  S. Ambe.  Adsorption kinetics of antimony(V) ions onto α-ferric oxide surfaces from an aqueous solution , 1987 .

[9]  Xiangqin Lin,et al.  Electrochemical hydride generation atomic fluorescence spectrometry for the simultaneous determination of arsenic and antimony in Chinese medicine samples , 2005 .

[10]  S. Uchida,et al.  Antimony mobility in Japanese agricultural soils and the factors affecting antimony sorption behavior. , 2006, Environmental pollution.

[11]  Cong-Qiang Liu,et al.  The effect of humic acid on the adsorption of REEs on kaolin , 2006 .

[12]  A. Saada,et al.  Adsorption of arsenic (V) on kaolinite and on kaolinite-humic acid complexes. Role of humic acid nitrogen groups. , 2003, Chemosphere.

[13]  Y. Minai,et al.  Simultaneous determination of stability constants of humate complexes with various metal ions using multitracer technique , 1997 .

[14]  M. He,et al.  Effects of different forms of antimony on rice during the period of germination and growth and antimony concentration in rice tissue , 1999 .

[15]  S. Canonica,et al.  Photoinduced oxidation of antimony(III) in the presence of humic acid. , 2005, Environmental science & technology.

[16]  Ruben Kretzschmar,et al.  Quantitative Antimony Speciation in Shooting-Range Soils by EXAFS Spectroscopy , 2006 .

[17]  D. Sparks,et al.  X-ray Absorption Spectroscopic Investigation of Arsenite and Arsenate Adsorption at the Aluminum Oxide-Water Interface. , 2001, Journal of colloid and interface science.

[18]  J. Leckie,et al.  Modeling ionic strength effects on cation adsorption at hydrous oxide/solution interfaces , 1987 .

[19]  Xiao Tang-fu.  SUPERGENE GEOCHEMICAL BEHAVIOR AND ENVIRONMENTAL RISK OF ANTIMONY , 2007 .

[20]  D. Craw,et al.  Antimony distribution and environmental mobility at an historic antimony smelter site, New Zealand. , 2004, Environmental pollution.

[21]  Anderson,et al.  Experimental and Theoretical Diffusivities of Cd and Sr in Hydrous Ferric Oxide , 1997, Journal of colloid and interface science.

[22]  B. Xing,et al.  An investigation of inorganic antimony species and antimony associated with soil humic acid molar mass fractions in contaminated soils. , 2007, Environmental pollution.

[23]  K. Adebowale,et al.  Adsorption of Pb(II) and Cd(II) from aqueous solutions onto sodium tetraborate-modified Kaolinite clay: Equilibrium and thermodynamic studies , 2008 .

[24]  Johanna Buschmann,et al.  Antimony(III) binding to humic substances: influence of pH and type of humic acid. , 2004, Environmental science & technology.

[25]  T. Strathmann,et al.  Effect of soil fulvic acid on nickel(II) sorption and bonding at the aqueous-boehmite (gamma-AIOOH) interface. , 2005, Environmental science & technology.

[26]  Yoshio Takahashi,et al.  Comparison of antimony behavior with that of arsenic under various soil redox conditions. , 2006, Environmental science & technology.

[27]  Z. Lin,et al.  Adsorption, desorption and oxidation of arsenic affected by clay minerals and aging process , 2000 .

[28]  J. Martin,et al.  Antimony cycling in the western Mediterranean , 1996 .

[29]  C. A. Johnson,et al.  Sorption of Sb(III) and Sb(V) to goethite: influence on Sb(III) oxidation and mobilization. , 2006, Environmental science & technology.

[30]  D. Craw,et al.  ATR-IR spectroscopic study of antimonate adsorption to iron oxide. , 2007, Langmuir : the ACS journal of surfaces and colloids.

[31]  Montserrat Filella,et al.  Antimony in the environment: a review focused on natural waters: I. Occurrence , 2002 .

[32]  W. Pickering,et al.  Sorption of antimony species by humic acid , 1995 .

[33]  A. Violante,et al.  Competitive Sorption of Arsenate and Phosphate on Different Clay Minerals and Soils , 2002 .

[34]  Jian Zheng,et al.  Studies on the speciation of inorganic and organic antimony compounds in airborne particulate matter by HPLC-ICP-MS , 2000 .

[35]  S. Goldberg,et al.  Adsorption and stability of arsenic(III) at the clay mineral-water interface , 1997 .

[36]  T Gebel,et al.  Arsenic and antimony: comparative approach on mechanistic toxicology. , 1997, Chemico-biological interactions.

[37]  W. Dubbin,et al.  Investigations into the kinetics and thermodynamics of Sb(III) adsorption on goethite (α-FeOOH) , 2006 .

[38]  Bin Chen,et al.  Antimony: global environmental contaminant. , 2005, Journal of environmental monitoring : JEM.

[39]  G. Paton,et al.  Antimony bioavailability in mine soils. , 2003, Environmental pollution.

[40]  Peter Lockwood,et al.  Adsorption of antimony(V) by floodplain soils, amorphous iron(III) hydroxide and humic acid. , 2005, Journal of environmental monitoring : JEM.