2020
DOI: 10.1080/17458080.2020.1810240
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Interaction of metal ions with humic acids of brown coals of Kazakhstan

Abstract: This paper investigates interaction processes of the Fe 3þ , Cu 2þ , Ni 2þ , and Co 2þ cations with humic acids isolated from brown coals of Ekibastuz basin. It was demonstrated that the sorption of heavy metal ions by humic acids (HA) depends on the concentration and nature of cations and decreases in the order of Fe 3þ > Cu 2þ > Ni 2þ > Co 2þ ; while increase in the concentration of humic acids (HA) results in the higher yield of ions and metals. The occurrence of ion exchange and complexation reactions in m… Show more

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Cited by 6 publications
(2 citation statements)
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“…The complex and heterogeneous coal matrix is created by amorphous polymers containing double-or triple-substituted aromatic rings which makes LRC highly suitable for immobilizing di-and trivalent metals in soil, consequently reducing their uptake by plants. Brown coal-derived HA has been used already multiple times for the environmentally beneficial adsorption of metal ions (Al 3+ , Pb 2+ , Fe 3+ , Ca 2+ , Mn 2+ , Mg 2+ , Cu 2+ , Ni 2+ , Co 2+ , Cd 2+ ), that strongly reduced their mobility, bioavailability and phytotoxicity [69][70][71][72][73].…”
Section: Effects Of Lrc On Soil Heavy Metals and Other Pollutantsmentioning
confidence: 99%
“…The complex and heterogeneous coal matrix is created by amorphous polymers containing double-or triple-substituted aromatic rings which makes LRC highly suitable for immobilizing di-and trivalent metals in soil, consequently reducing their uptake by plants. Brown coal-derived HA has been used already multiple times for the environmentally beneficial adsorption of metal ions (Al 3+ , Pb 2+ , Fe 3+ , Ca 2+ , Mn 2+ , Mg 2+ , Cu 2+ , Ni 2+ , Co 2+ , Cd 2+ ), that strongly reduced their mobility, bioavailability and phytotoxicity [69][70][71][72][73].…”
Section: Effects Of Lrc On Soil Heavy Metals and Other Pollutantsmentioning
confidence: 99%
“…In the case of the presence of iron, as Fe 3+ , in liquid medium, several technologies are being using in the separation or elimination of the element from the aqueous solutions containing it. These technologies included solvent extraction with organic derivatives of phosphoric acid (Wang et al, 2020) or mixtures of alcohols and octadecanamide (Zhu et al, 2021), ion exchange using humic acids isolated from brown coals of Ekibastuz basin (Dauletbay et al, 2020) or ion exchange resins (El-Hamid et al, 2020;Zhang et al, 2020), adsorption onto zeolite and bentonite (Bakalár et al, 2020), natural or synthetic aluminosilicates (Flieger et al, 2020), and hydroxyapatite (Hamad et al, 2020), also solar technology was used to investigate its application on the removal of iron(III) from solutions (Arzate et al, 2020).…”
Section: Introductionmentioning
confidence: 99%