Oxalate ion sorption on ferrogels

Authors

  • Sofia I. Pechenyuk The Professor, Doctor of chemical Sciences, the main scientific employee of Institute of Chemistry and Technology of rare Elements and mineral raw Materials of the Name of I.V.Tananaev, E-mail: pechenyuk@chemy.kolasc.net.ru
  • Lubov P. Kuz’mich research fellow of Institute of Chemistry and Technology of rare Elements and mineral raw Materials of the Name of I.V.Tananaev
  • Julia P. Semushina junior research fellow of Institute of Chemistry and Technology of rare Elements and mineral raw Materials of the Name of I.V.Tananaev

Keywords:

sorption, oxalate-ion, iron(III) oxyhydroxide gel, isotherm, pH-dependence.

Abstract

Oxalate-ion sorption on freshly prepared iron(III) oxyhydroxide gels in the range of precipitation
pH 4-9 and initial concentrations (1-60)х10-3 mole per l at background electrolytes NaCl and Na2SO4 by
ionic strength 0.1-0.5 has been investigated. It was found that background electrolyte does not prevent
from the sorption and does not influence greatly on the uptake. Sorption isotherms and pH dependences
have been obtained. Sorption isotherms follow Langmuir equation. The uptake depends on pH strongly
and at pH>9 the sorption breaks. Sorbed oxalate desorbs with chloride- and sulphate-ions insignificanly ,
but desorbs with alkaline and phosphate-ion very strongly. The assumptions about sorption mechanism
are applied. References – 14

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Published

2019-11-27

Issue

Vol. 10 No. 1 (2010): Sorbtsionnye i Khromatograficheskie Protsessy

Section

Статьи

How to Cite

Oxalate ion sorption on ferrogels. (2019). Sorbtsionnye I Khromatograficheskie Protsessy, 10(1). https://journals.vsu.ru/sorpchrom/article/view/2021

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