Kinetics of cadmium adsorption on aluminum precipitation products formed under the influence of tannate

Yu, Ge; Saha, Uttam Kumar; Kozak, L. M.; Huang, P. M.

doi:10.1016/j.gca.2006.06.1567

Cited by 25 publications

(38 citation statements)

References 68 publications

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“…This multi-phasic behaviour of arsenate adsorption has been observed in several studies on pure Al and Fe oxides Raven et al 1998;O'Reilly et al 2001;Arai and Sparks 2002) and soils (Livesey and Huang 1981;Zhang and Selim 2005). The multi-step rate processes have also been reported for the adsorption kinetics of different anions such as phosphate and selenite (Liu and Huang 2000;Saha et al 2004) and cations, such as Pb and Cd (Liu and Huang 2003;Yu et al 2006) and is generally attributed to the heterogeneity at the adsorption sites with different binding strength and different accessibility to the interior pores.…”

Section: Arsenite Adsorption Kineticssupporting

confidence: 52%

“…The pre-exponential factor values, which give an indication of the accessibility of the adsorbate ions to the surfaces and the frequency of collision of adsorbate ions with the adsorbent surface (Liu and Huang 2000;Yu et al 2006), were lower when the HA coating was present, indicating the reduction of the reaction sites and/or the hindering effect of the humic molecules toward arsenite approaching the surfaces.…”

Section: Arsenite Adsorption Kineticsmentioning

confidence: 99%

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Effect of humic acid coating on arsenic adsorption on ferrihydrite-kaolinite mixed systems

Martín¹,

Celi²,

Barberis³

et al. 2009

Can. J. Soil. Sci.

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. 2009. Effect of humic acid coating on arsenic adsorption on ferrihydrite-kaolinite mixed systems. Can. J. Soil Sci. 89: 421Á434. The reactivity of the colloids formed in soil environments results from complex interactions between clay minerals, (oxy)hydroxides and organic matter of soils. The adsorption/desorption equilibria and kinetics of anionic and cationic species on/from natural colloids could substantially differ compared with their interaction with pure minerals. The objective of this study was to investigate the arsenite and arsenate equilibria and the kinetics of arsenite adsorption on ferrihydrite-coated kaolinite as influenced by the presence of humic acid coverage. The Langmuir adsorption maximum and affinity of arsenite and arsenate adsorption on the kaolinite-ferrihydrite system was reduced by the presence of the humic acid. The enthalpy of adsorption on the kaolinite-ferrihydrite system, measured with isothermal titration calorimetry, was (24.4 kJ mol(1 for arsenite and (39.9 kJ mol(1 for arsenate, and was only slightly decreased by the humic acid coating. The kinetics of arsenite adsorption was substantially influenced by the presence of the humic coverage, resulting in the decrease in the rate constant, the Arrhenius heat of activation, and the pre-exponential factor (indicative of the collision frequency of the sorbate and the sorbent). The hampering effect of the humic acid on arsenic adsorption was attributable to the blocking by the organic ligand of the adsorbing sites, coupled with the steric hindrance of the large organic molecules, which restricted the arsenic to approach the surfaces.Key words: Arsenic, adsorption, kinetics, kaolinite, ferrihydrite, humic acid Martin, M., Celi, L., Barberis, E., Violante, A., Kozak, L. M. et Huang, P. M. 2009. Incidence de l'acide humique sur l'adsorption de l'arsenic dans les syste`mes mixtes ferrihydrite-kaolinite. Can. J. Soil Sci. 89: 421Á434. La re´activite´des colloı¨des forme´s dans le sol de´pend des interactions complexes entre les mine´raux pre´sents dans l'argile, les (oxy)hydroxydes et la matie`re organique du sol. L'e´quilibre entre adsorption et de´sorption, et la cine´tique des anions et des cations sur les colloı¨des naturels ou qui en e´manent pourraient sensiblement diffe´rer face a`ce qu'on observe dans les interactions avec les mine´raux purs. La pre´sente e´tude devait pre´ciser l'e´quilibre entre les arse´nites et les arse´niates ainsi que la cine´tique de l'adsorption des arse´nites sur de la kaolinite enduite de ferrihydrite en pre´sence d'une couche d'acide humique. L'acide humique re´duit le maximum d'adsorption de Langmuir et l'affinite´des arse´nites ainsi que l'adsorption des arse´niates dans le syste`me kaolinite-ferrihydrite. Mesure´e par calorime´trie a`titrage isotherme, l'enthalpie de l'adsorption dans le syste`me kaolinite-ferrihydrite s'e´tablit a`(24.4 kJ par mole pour les arse´nites et a`(39,9 kJ par mole pour les arse´niates; la couche d'acide humique ne la re´duit que le´ge`rement. La cine´tique de l'adsorption...

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Section: Arsenite Adsorption Kineticssupporting

confidence: 52%

Section: Arsenite Adsorption Kineticsmentioning

confidence: 99%

Effect of humic acid coating on arsenic adsorption on ferrihydrite-kaolinite mixed systems

Martín¹,

Celi²,

Barberis³

et al. 2009

Can. J. Soil. Sci.

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show abstract

“…A change in the rate constant is not unusual in the case of surface reactions, such as the reactions of specific adsorption or desorption of anions and cations on/from the surfaces of iron or aluminum oxides (Liu and Huang, 2003), (Saha et al, 2004(Saha et al, , 2005, (Yu et al, 2006) and (Martin et al, 2009). …”

Section: Abiotic Nitrate Reduction By Zerovalent Iron: Effect Of Intementioning

confidence: 99%

Reduction of Nitrate and Ammonium Adsorption Using Microscale Iron Particles and Zeolitite

Comba

Martín

Marchisio

et al. 2011

Water Air Soil Pollut

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“…This SRO Al consists of the precipitated Al -humus complexes and SRO -Al -OH species within interlayers and on edges and external planar surfaces of soil mineral colloids. Short -range ordered Al species possess considerable reactive surface area and microporosity that may contribute to adsorption of organic matter and physical protection within micropore structures Yu et al, 2006 ) and also promote aggregation and occlusion of organic matter in aggregate structures . The results of Rasmussen et al (2005) are similar to those of Percival et al (2000) , who found that the pyrophosphate -extractable Al (Alp) is the best predictor of New Zealand C stocks in grassland soils and Veldkamp (1994) , who found a high correlation between soil C mean residence time (MRT) and Alp and SRO aluminosilicates.…”

Section: Physical and Chemical Protectionmentioning

confidence: 99%

Formation Mechanisms of Humic Substances in the Environment

Huang

Hardie

2009

Biophysico‐Chemical Processes Involving Natural Nonliving Organic Matter in Environmental Systems

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Kinetics of cadmium adsorption on aluminum precipitation products formed under the influence of tannate

Cited by 25 publications

References 68 publications

Effect of humic acid coating on arsenic adsorption on ferrihydrite-kaolinite mixed systems

Effect of humic acid coating on arsenic adsorption on ferrihydrite-kaolinite mixed systems

Reduction of Nitrate and Ammonium Adsorption Using Microscale Iron Particles and Zeolitite

Formation Mechanisms of Humic Substances in the Environment

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