ADSORPTION OF SELENITE AND SELENATE BY A HIGH- AND LOW-PRESSURE AGED MANGANESE OXIDE NANOMATERIAL

This study investigated the effects of pH, reaction time, competitive anions, and adsorption capacity through the use of Langmuir isotherms of selenite and selenate binding to engineered Mn3O4 nanomaterials aged using two different techniques through use of dynamic reaction cell inductively coupled plasma–mass spectrometry (DRC-ICP-MS). The phases and average grain sizes of the synthesized materials were determined through x-ray diffraction and Scherrer's equation. The optimal binding occurred at pH 4 within 10 min of contact time for both materials. The addition of Cl−, , and all decreased selenate binding, while only decreased selenite binding. The binding capacities were found to be 507 and 800 mg Se/kg of non-microwave-assisted Mn3O4 for selenite and selenate, respectively. The microwave-assisted Mn3O4 displayed binding capacities of 1000 and 934.5 mg Se/kg of nanomaterial for selenite and selenate, respectively.

[1]  C. Amrhein,et al.  Removal of selenate from water by zerovalent iron. , 2005, Journal of environmental quality.

[2]  R. Frost,et al.  Absorption of the selenite anion from aqueous solutions by thermally activated layered double hydroxide. , 2009, Water research.

[3]  S. Apte,et al.  Nanosize Mn3O4 (Hausmannite) by microwave irradiation method , 2006 .

[4]  M. Salavati‐Niasari,et al.  Synthesis of Mn3O4 nanoparticles by thermal decomposition of a [bis(salicylidiminato)manganese(II)] complex , 2008 .

[5]  E. I. El-Shafey,et al.  Sorption of Cd(II) and Se(IV) from aqueous solution using modified rice husk. , 2007, Journal of hazardous materials.

[6]  D. Peak.  Adsorption mechanisms of selenium oxyanions at the aluminum oxide/water interface. , 2006, Journal of colloid and interface science.

[7]  D. Hoffman.  Role of selenium toxicity and oxidative stress in aquatic birds. , 2002, Aquatic toxicology.

[8]  G. Bañuelos,et al.  Phytoremediation of Selenium-Contaminated Soils and Waters: Fundamentals and Future Prospects , 2002, Reviews on environmental health.

[9]  M. Ike,et al.  Factors affecting soluble selenium removal by a selenate-reducing bacterium Bacillus sp. SF-1. , 2000, Journal of bioscience and bioengineering.

[10]  A. Sabarudin,et al.  Synthesis of chitosan resin possessing 3,4-diamino benzoic acid moiety for the collection/concentration of arsenic and selenium in water samples and their measurement by inductively coupled plasma-mass spectrometry , 2005 .

[11]  H. Wijnja,et al.  Vibrational Spectroscopy Study of Selenate and Sulfate Adsorption Mechanisms on Fe and Al (Hydr)oxide Surfaces. , 2000, Journal of colloid and interface science.

[12]  M. Miller.  Agency , 2010 .

[13]  Guohua Chen,et al.  Fast removal and recovery of Cr(VI) using surface-modified jacobsite (MnFe2O4) nanoparticles. , 2005, Langmuir : the ACS journal of surfaces and colloids.

[14]  K. Parida,et al.  Studies on selenite adsorption using manganese nodule leached residues. , 2007, Journal of colloid and interface science.

[15]  Ning Zhang,et al.  Adsorptive Removal of Parts per Million Level Selenate Using Iron-Coated GAC Adsorbents , 2010 .

[16]  H. Chmiel,et al.  New hybrid electrocoagulation membrane process for removing selenium from industrial wastewater , 2006 .

[17]  M. I. Zaman,et al.  Temperature effect on the mechanism of phosphate anions sorption by β-MnO2 , 2008 .

[18]  K. Parida,et al.  Studies on ferric oxide hydroxides , 1996, Journal of Materials Science.

[19]  M. Toprak,et al.  A novel synthetic route to Mn3O4 nanoparticles and their magnetic evaluation , 2008 .

[20]  C. Su,et al.  Selenate and selenite sorption on iron oxides : An infrared and electrophoretic study , 2000 .

[21]  J. Peralta-Videa,et al.  Determination of arsenic(III) and arsenic(V) binding to microwave assisted hydrothermal synthetically prepared Fe3O4, Mn3O4, and MnFe2O4 nanoadsorbents , 2009 .

[22]  M. Fan,et al.  Effect of competing solutes on arsenic(V) adsorption using iron and aluminum oxides. , 2007, Journal of environmental sciences.

[23]  U. Saha,et al.  Selenite Adsorption Mechanisms on Pure and Coated Montmorillonite: An EXAFS and XANES Spectroscopic Study , 2006 .

[24]  C. A. Johnson,et al.  Uptake of Se(IV/VI) oxyanions by hardened cement paste and cement minerals: An X-ray absorption spectroscopy study , 2006 .

[25]  K. Scheckel,et al.  Selenium adsorption to aluminum-based water treatment residuals. , 2009, Journal of colloid and interface science.

[26]  Lijun Yang,et al.  Sorption behavior of nano-TiO2 for the removal of selenium ions from aqueous solution. , 2009, Journal of hazardous materials.

[27]  G. A. Parks,et al.  X-ray absorption fine structure study of As(V) and Se(IV) sorption complexes on hydrous Mn oxides , 2003 .

[28]  W. Frankenberger,et al.  Bioremediation of selenium‐contaminated sediments and water , 2001, BioFactors.

[29]  J. Catalano,et al.  Inner-sphere adsorption geometry of Se(IV) at the hematite (100)-water interface. , 2006, Journal of colloid and interface science.

[30]  Ning Zhang,et al.  Adsorptive selenite removal from water using iron-coated GAC adsorbents. , 2008, Water research.

[31]  J. Caruso,et al.  Selenium speciation analysis using inductively coupled plasma-mass spectrometry. , 2006, Journal of chromatography. A.

[32]  A. Sharma,et al.  Manganese-oxide-coated alumina: a promising sorbent for defluoridation of water. , 2006, Water research.

[33]  L. Philip,et al.  As(III) removal from drinking water using manganese oxide-coated-alumina: Performance evaluation and mechanistic details of surface binding , 2009 .

[34]  S. Matsumoto,et al.  SELENITE ADSORPTION BY MANGANESE OXIDES , 1995 .