Lithium Adsorption on Magnetite, Lepidocrocite, and Maghemite at Elevated Temperatures

Qiu, Liyan; Snaglewski, Anthony

doi:10.13182/nse13-93

Cited by 6 publications

(1 citation statement)

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“…The great practical importance of MCs causes a constant interest in researching their properties and developing new methods of synthesis. Magnetite has catalytic properties [4], it can be used in the creation of materials intended for diagnosis and therapy [5], in the printing and in devices for magnetic recording of information [6], [7], [8], for wastewater treatment [9], in the neutralization of wastes in the oil and gas industry, for adsorption desulfurization [10], in the production of feed additives, in machine building, in the food industry, in the production of composites, anodes, in the separation and purification of inorganic and organic compounds [11].…”

Section: Introductionmentioning

confidence: 99%

Influence of lignosulfonic acids on the formation of magnetoactive compound in the redox reaction of iron(II) with chromate-anion

Kuzyakov¹,

Veshnyakov²,

Khabarov³

et al. 2018

IJET

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Chromium and its compounds are widely used in various industries. Wastewater from industrial enterprises using chromium compounds are subject to complete disposal at treatment facilities. The possibility of synthesizing a magnetoactive compound by oxidizing part of Fe(II) cations with chromate-anions in the presence of lignosulfonates was investigated. The magnetic activity was measured on Gouy balance, magnetic characteristics were determined by the magnetic granulometry method. It has been shown that the interaction of Fe(II) cations with chromate-anions passes with the formation of an water soluble intermediate without redox transformations at pH 3.4. Using method of the isomolar series, it was determined that the ratio of chromate-ions and Fe(II) cations in the intermediate is 1:2.33. The intermediate solution is stable for a long time. Synthesized magnetoactive compound samples are ferrimagnets. The use of lignosulfonate and the synthesis with heating can achieve a higher magnetic activity of magnetoactive compound. The optimal lignosulfonate consumption is 0.7 g/g Fe.

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