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M.A. Arkhilin, N.I. Bogdanovich Complete text of the article:Download article (pdf, 0.9MB )UDС661.183.3DOI:10.17238/issn0536-1036.2016.2.131AbstractAdsorption processes are widely used in industry by recovery for removing various substancesand purification of solutions. Most common commercial adsorbents are active carbon materials. However modern carbon adsorbents have disadvantages that are absent at magneto susceptible organomineral adsorbents. The development of adsorbents possessing magnetic susceptibility is actively pursued in the world. The use of such adsorbents in technology makes it easy to separate them from the treated liquid phase by applying a magnetic field and to intensify the technological process. Magneto susceptible adsorbents were prepared by chemical activation of hydrolytic lignin with iron hydroxide (III). Fe(OH)3 was reduced to magnetic forms of Fe and promoted to burn-off carbon from hydrolytic lignin that led to activation of a carbon matrix. Synthesis of adsorbents was performed by the planned experiment. The central rotatable second-order uniform plan for the three factors was used. The effect of pyrolysis temperature, iron hydroxide dosage and pH of the end point of Fe(OH)3 precipitation were investigated. The resulting adsorbents were characterized by the adsorption and magnetic properties, the nature of properties dependence on the synthesis conditions of adsorbents was established. On the basis of experimental data the regression equations with significant coefficients are calculated. They are the mathematic models of properties dependence on the varied factors. The models allow us to predict the properties of adsorbents in the investigated range of variation of parameters. The obtained adsorbents have high adsorption properties towards either iodine or methylene blue. Some samples have magnetic susceptibility value closed to magnetite, but the best conditions for high adsorption and magnetic properties are situated in different areas. We found the areas of conditional optimum in the investigated interval of varied parameters. AuthorsM.A. Arkhilin, Postgraduate Student N.I. Bogdanovich, Doctor of Engibeering Sciences, ProfessorAffiliationNorthern (Arctic) Federal University named after M.V. Lomonosov, NaberezhnayaSevernoy Dviny, 17, Arkhangelsk, 163002, Russian Federation; е-mail: m.arhilin@narfu.ru, n.bogdanovich@narfu.ru Keywordshydrolytic lignin, adsorbent organo-mineral, carbon-mineral, magneto susceptible, ferromagnetic.References1. Khabarov Yu.G., Babkin I.M. Sposob polucheniya magnitoaktivnogo soedineniya [A Method for Producing Magnetically Active Compound]. Patent RF 2476382, 2011. 2. Khabarov Yu.G., Babkin I.M., Veshnyakov V.A. Sintez magnitoaktivnogo soedineniya na osnove sul'fata zheleza (II) [Synthesis of Magneto Active Compound Based on Iron Sulphate (II)]. Zhurnal prikladnoy khimii [Russian Journal of Applied Chemistry], 2012, vol. 85, no. 6, pp. 900–905. 3. Shevchenko R.S., Bogdanovich N.I., Kuznetsova L.N., Dobele G.V. Formirovanie sorbtsionnykh i magnitnykh svoystv ferromagnitnykh adsorbentov pri pirolize otkhodov pererabotki drevesiny v prisutstvii gidroksida zheleza (III) [Formation of Adsorption and Magnetic Properties of Ferromagnetic Adsorbents by Pyrolysis of Wood Processing Wastes with Iron Hydroxide (III)]. Lesnoy zhurnal, 1999, no. 2–3, pp. 142–150. 4. Asuha S., Gao Y.W., Deligeer W., Yu M., Suyala B., Zhao S. Adsorptive Removal of Methyl Orange Using Mesoporous Maghemite. J. Porous Mater., 2011, no. 18, pp. 58–587. 10.1007/s10934-010-9412-2. 5. Dai M, Vogt B.D. High Capacity Magnetic Mesoporous Carbon-Cobalt Composite Adsorbents for Removal of Methylene Green From Aqueous Solutions. J. Of Colloid and Interface Sc., 2012, no. 387, pp. 127–134. 10.1016/j.jcis.20120.06.062. 6. Kim B.C., Lee J., Um W., Kim J., Joo J., Lee J.H., Kwak J.H., Kim J.H., Lee C., Lee H., Addleman R.S., Hyeon T., Gu M.B., Kim J. Magnetic Mesoporous Materials for Removal of Environmental Wastes. J. of Hazardous Materials., 2011, no. 192, pp. 1140–1147. 10.1016/j.hazmat.2011.06.022. 7. Wang X., Dai S. A Simple Method to Ordered Mesoporous Carbons Containing Nickel Nanoparticles. Adsorption, 2009, no. 15, pp. 138–144. 10.1007/s10450-009- 9164-y. 8. Wang T., Liang L., Wang R., Jiang Y., Lin K., Sun J. Magnetic Mesoporous Carbon for Efficient Removal of Organic Pollutants. Adsorption, 2012, vol. 18, no. 5–6, pp. 439–444. 10.1007/s10450-012-9430-2. 9. Yin Y., Zhou S., Min C., Wu L. Preparation of Rattle-Type Magnetic Mesoporous Carbon Spheres and Their Highly Efficient Adsorption and Separation. J. Colloid and Interface Sc., 2011, no. 361, pp. 527–533. 10.1016/j.jcis.2011.05.014. 10. Yu J.-X., Wang L.-Y., Chi R.-A., Zhang Y.-F., Xu Z.-G., Guo J. A Simple Method to Prepare Magnetic Modified Beer Yeast and Its Application for Cationic Dye Adsorption. Envir Sci Pollut Res., 2013, no. 20, pp. 543–551. 10.1007/s11356-012-0903-3. Received on March 20, 2015 Adsorption and Magnetic Properties of Magneto Susceptible Adsorbents, Obtained on the Basis of Hydrolytic Lignin |
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