Scholarly record
THE INTERACTION OF IRON(II) CATIONS WITH CHROMATE ANIONS IN THE PRESENCE OF LIGNOSULFONATES
Abstract
Chromium is widely used in the form of metal and in the form of compounds. The compounds of Cr(VI) are highly toxic. Therefore, the wastewater containing chromium must be thoroughly cleaned by sorption, extraction, electrochemical and biochemicals methods. Methods based on the reduction of Cr(VI) occupy an important place. A large number of reducing agents, including FeSO4, has been proposed for this. Studies carried out earlier showed that during this reaction a magnetoactive compound is formed. Lignosulfonic acids have unique properties that other types of technical lignins do not have. By using them water-based ferrofluids can be synthesized. Therefore, the influence of lignosulfonates on the interaction of Fe(II) cations and K2CrO4 was studied. During the reaction, a complex is formed first. Potentiometry showed that at pH 3.5 the oxidation-reduction potential varies little. For condensation, alkali is added to the reaction mixture. Under these conditions, an insoluble compound precipitates, which falls within a few minutes, and the formation of magnetic activity occurs within 1-1.5 hours. That is, the redox reaction and ferritization occur mainly in the solid phase, and not in solution. Lignosulfonic acids accelerate ferritization. Magnetic activity is formed faster, and in addition its magnitude is greater than in the synthesis of a magnetoactive compound without lignosulfonates. Magnetoactive compound refers to ferrimagnetic compounds. An important result of the research is practically complete deposition of chromium compounds in the form of magnetoactive compound that are easily separated by magnetic separation.
Publication Impact Profile
Publication details
References14
Iglesias D., Sabater S., Azua A., Mata J.A., Catalytic applications of magnetic nanoparticles functionalized using iridium N-heterocyclic carbene complexes, New Journal of Chemistry, United Kingdom, vol. 39/issue 8, pp 6437-6444, 2015.
Kempe H., Kempe M., The use of magnetite nanoparticles for implant-assisted magnetic drug targeting in thrombolytic therapy, Biomaterials, United Kingdom, vol. 31/issue 36, pp 9499-9510, 2010.
Mendoza M.E., Donado F., Silva R., Perez M.A., Magnetite microcrystals for magneto-rheological fluids, Journal of Physics and Chemistry of Solids, United Kingdom, vol. 66, pp 927-931, 2005.
Sun X., Sun K., Liang Y., Hydrothermal synthesis of magnetite: investigation of influence of aging time and mechanism, Micro & Nano Letters, United Kingdom, vol. 10/issue 2, pp 99-104, 2015.
Hariani P.L., Faizal M., Marsi R., Setiabudidaya D., Synthesis and Properties of Fe3O4 Nanoparticles by Co-precipitation Method to Removal Procion Dye, International Journal of Environmental Science and Development, Iran, vol. 4/issue 3, pp 336-340, 2013.
Hyeon T., Chemical synthesis of magnetic nanoparticles, Chemical Communications, United Kingdom, no 8, pp 927-934, 2003.
Shen L., Laibinis P.E., Hatton T.A., Bilayer Surfactant Stabilized Magnetic Fluids: Synthesis and Interactions at Interfaces, Langmuir, United States, vol. 15/issue 2, pp 447-453, 1998.
Massart R., Preparation of aqueous magnetic liquids in alkaline and acidic media, IEEE Transactions on Magnetics, United States, vol. 17/issue 2, pp 1247-1248, 1981.
Subbotin K.A., Mikhailichenko A.I., Nefedova N.V., Effect of synthesis conditions on magnetic properties of magnetite, Russian Journal of Applied Chemistry, Russia, vol. 73/issue 10, pp 1671-1675, 2000.
Hosseini-Monfared H., Parchegani F., Alavi S., Carboxylic acid effects on the size and catalytic activity of magnetite nanoparticles, Journal of Colloid and Interface Science, United States, vol. 437/issue 1, pp 1-9, 2015.
Sarkanen K.V., Ludwig C.H., Lignins: Occurrence, Formation, Structure and Reactions, John Wiley & Sons, Inc., New York, United States, pp 916, 1971.
Babkin I., Brovko O., Iakovlev M., Khabarov Yu., Ferrofluid Synthesis Using Nitrosated Lignosulfonates, Industrial & Engineering Chemistry Research, United States, vol. 52/issue 23, pp 7746-7751, 2013.
Kákay A., Gutowski M.W., Takacs L., Franco V., Varga L.K., Langevin granulometry of the particle size distribution, Journal of Physics A: Mathematical and General, United Kingdom, vol. 37/issue 23, pp 6027-6041, 2004
Lide D.R., CRC Handbook of Chemistry and Physics, 88th. Edition, CRC Press (Taylor & Francis), Boca Raton, FL, United States, pp 2640, 2007.
View or Download full articleAccess options
SWS access login
Login as SWS Scientific CommitteeLogin as SWS Scientific PartnerLogin as SWS AuthorAuthors and approved SWS contributors will read and export their own linked papers after identity matching by SWS profile, email and SGEM GlobalID.
For librarian assistance: [email protected]
Purchase Instant Access
- Article can be downloaded after successful payment.
- Article may be used according to SWS library access terms.
- Article cannot be redistributed.
