The influence of citrate anion on Ni(II) removal by raw red mud from aluminum industry

Smičiklas, Ivana; Smiljanić, Slavko; Perić-Grujić, Aleksandra A.; Šljivić-Ivanović, Marija Z.; Antonović, Dušan

doi:10.1016/j.cej.2012.10.086

Cited by 35 publications

(19 citation statements)

References 41 publications

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“…Similarly, it was reported that red mud exhibits lower sorption affinity towards Ni-citrate complex than for free Ni 2C ions. [35] Sr 2C sorption by RBRM was only slightly influenced by the change in the ligands concentration, suggesting a weaker complexation. In the literature, Sr-EDTA complex was found to dissociate upon the contact with a solid phase leading to sorption of free Sr 2C ions.…”

Section: The Effect Of Initial Co 2c and Sr 2c Concentrations On Sorpmentioning

confidence: 89%

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Effect of experimental variables onto Co²⁺and Sr²⁺sorption behavior in red mud-water suspensions

Milenković

Smičiklas

Šljivić-Ivanović

et al. 2016

Journal of Environmental Science and Health, Part A

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The prospects of rinsed red mud (alumina production residue) utilization for liquid radioactive waste treatment have been investigated, with Co(2+) and Sr(2+) as model cations of radioactive elements. To evaluate the sorption effectiveness and corresponding binding mechanisms, the process was analyzed in batch conditions, by varying experimental conditions (pH, Co(2+) and Sr(2+) concentrations in single solutions and binary mixtures, contact time, and the concentration of competing cations and ligands common in liquid radioactive waste). Comparison of the Co(2+) and Sr(2+) sorption pH edges with the red mud isoelectric point has revealed that Co(2+) removal took place at both positive and negative red mud surface, while Sr(2+) sorption abruptly increased when the surface became negatively charged. The increase of initial cation content and pH resulted in increased equilibrium times and sorption capacity and decreased rate constants. From single metal solutions and various binary mixtures, Co(2+) was sorbed more efficiently and selectively than Sr(2+). While Sr(2+) sorption was reduced by coexisting cations in the order Al(3+) ≥ Ca(2+) >Na(+) ≥Cs(+), removal of Co(2+) was affected by Al(3+) species and complexing agents (EDTA and citrate). Desorption of Co(2+) was negligible in Ca(2+) and Sr(2+) containing media and in solutions with initial pH 4-7. Sr(2+) desorption was generally more pronounced, especially at low pH and in the presence of Co(2+). Collected macroscopic data signify that Co(2+) sorption by red mud minerals occurred via strong chemical bonds, while Sr(2+) was retained mainly by weaker ion-exchange or electrostatic interactions. Results indicate that the rinsed red mud represent an efficient, low-cost sorbent for Co(2+) and Sr(2+) immobilization.

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Section: The Effect Of Initial Co 2c and Sr 2c Concentrations On Sorpmentioning

confidence: 89%

“…[29] With respect to the composition of untreated sample, [35] fluctuations in mineralogical profile and oxide contents, caused by washing process, were minor. Reduced content of Na 2 O was evident in RBRM (7.76%) when compared to raw sample (8.92%).…”

Section: Properties Of Rbrm Sorbentmentioning

confidence: 97%

Effect of experimental variables onto Co²⁺and Sr²⁺sorption behavior in red mud-water suspensions

Milenković

Smičiklas

Šljivić-Ivanović

et al. 2016

Journal of Environmental Science and Health, Part A

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“…Sadržaj slobodne baze u tečnoj fazi iznosio je oko 10 g/dm 3 Na2O, što je uslovljavalo visok alalitet, kako suspenzije, tako i čvrste faze. pH vrednost čvrste faze u destilovanoj vodi se kretala u opsegu 9,78 -10,65, zа rаzličitе odnose čvrsto/rastvor [21]. Sa pоrаstоm odnosa čvrsto/rastvor do 1:5 (200 g/dm 3 ), uočen je rast pH vrеdnоsti.…”

Section: Rezultati I Diskusijaunclassified

“…Glavne mineralne faze u polaznom mulju bile su: hematit, sodalit, gipsit, bajetit, kalcit, kvarc, anatas i rutil. Nајvаžniјe hеmiјske kоmpоnеntа u BRМ bile su: Fe2O3 (42,42 %), Al2O3 (18,08 %), SiO2 (12,62 %), Na2O (8,92 %) TiO2 (4,63 %), CaO (2,86 %) [21]. Visоk sаdržај Nа2O biо је glаvni uzrоk visоkоg аlkаliteta uzоrkа.…”

Section: Rezultati I Diskusijaunclassified

Examination of the influence of treatments and mineral composition on the point of zero charge of red mud

Smiljanić¹,

Ostojic²,

Došić³

2018

Zaštita materijala

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“…Entre eles, está a lama vermelha (LV), para a adsorção de metais (GUPTA et al, 2001;LOPEZ et al, 1998;NADAROGLU et al, 2010;SAHU et al, 2011;SANTONA et al, 2006;SMIČIKLAS et al, 2013;2014;VACLAVIKOVA et al, 2005;WANG et al, 2008). Todavia, até o presente momento, não foram encontrados relatos científicos do uso da anidrita como adsorvente de metais.…”

Section: Introductionunclassified

Adsorção de Cd 2+, Ni 2+ e Zn 2+ em soluções aquosas usando anidrita e lama vermelha

Conceição

Pichinelli

Silva

et al. 2017

Eng. Sanit. Ambient.

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RESUMO Vários minerais e resíduos industriais têm sido estudados para uso como adsorvente, entre eles a lama vermelha e a anidrita. A lama vermelha é um resíduo insolúvel gerado em grande quantidade durante o processamento da bauxita. A anidrita é um sulfato de cálcio (CaSO4) cristalizado sob a forma rômbica e usada como matéria-prima na indústria. Nesta investigação, a capacidade de adsorção de Cd2+, Ni2+ e Zn2+ pela anidrita e pela lama vermelha foi avaliada usando isotermas de adsorção de Langmuir e Freundlich. Os materiais empregados apresentaram adsorção ≥75±1% para todos os metais em soluções aquosas com concentração de 0,5 mmol.25 mL-1. As isotermas baseadas no modelo de Langmuir foram as mais apropriadas para descrever o fenômeno de remoção de Cd2+, Ni2+ e Zn2+ para a anidrita e a lama vermelha, com valores de capacidade máxima de adsorção de 0,47 e 0,51 mmol.g-1 para o Cd2+, 1,18 e 1,56 mmol.g-1 para o Ni2+ e 0,84 e 1,47 mmol.g-1 para o Zn2+, respectivamente. Esses valores foram superiores a outros valores exibidos por materiais empregados como adsorventes descritos em estudos prévios.

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The influence of citrate anion on Ni(II) removal by raw red mud from aluminum industry

Cited by 35 publications

References 41 publications

Effect of experimental variables onto Co²⁺and Sr²⁺sorption behavior in red mud-water suspensions

Effect of experimental variables onto Co²⁺and Sr²⁺sorption behavior in red mud-water suspensions

Examination of the influence of treatments and mineral composition on the point of zero charge of red mud

Adsorção de Cd 2+, Ni 2+ e Zn 2+ em soluções aquosas usando anidrita e lama vermelha

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The influence of citrate anion on Ni(II) removal by raw red mud from aluminum industry

Cited by 35 publications

References 41 publications

Effect of experimental variables onto Co2+and Sr2+sorption behavior in red mud-water suspensions

Effect of experimental variables onto Co2+and Sr2+sorption behavior in red mud-water suspensions

Examination of the influence of treatments and mineral composition on the point of zero charge of red mud

Adsorção de Cd 2+, Ni 2+ e Zn 2+ em soluções aquosas usando anidrita e lama vermelha

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Effect of experimental variables onto Co²⁺and Sr²⁺sorption behavior in red mud-water suspensions

Effect of experimental variables onto Co²⁺and Sr²⁺sorption behavior in red mud-water suspensions