Adsorption of cadmium ions from aqueous solutions using nano-montmorillonite: kinetics, isotherm and mechanism evaluations

Liu, Wei; Zhao, Chenchen; Wang, Shutao; Niu, Lin; Wang, Yunli; Liang, Shan; Cui, Zhe

doi:10.1007/s11164-017-3178-y

Cited by 33 publications

(17 citation statements)

References 33 publications

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“…The mechanism of the pseudo 2nd order adsorption process is described by assuming that the determinant of the reaction rate is a chemical entrapment process including the electron exchange between adsorbate and adsorbent or inter-valence force. This finding is in accordance with the results of other studies [ 34 ]. Furthermore, the occurrence of chemical adsorption was mostly related to presence of amine groups on the adsorbent.…”

Section: Resultssupporting

confidence: 94%

The Amine Functionalized Sugarcane Bagasse Biocomposites as Magnetically Adsorbent for Contaminants Removal in Aqueous Solution

et al. 2021

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The method of solvothermal by one-step operation has been performed to synthesize of magnetic amine-functionalized sugarcane bagasse biocomposites (SB-MH). The obtained SB-MH contains 62.34% of Fe, 17.8 mmol/g of amine, and a magnetic property of 19.46 emu/g. The biocomposite surface area increased significantly from 1.617 to 25.789 m2/g after amine functionalization. The optimum condition of SB-MH used for Pb(II) ion removal was achieved at pH 5 for 360 min with adsorption capacity of 203.522 mg/g. The pseudo 2nd order was well-fitted to the model of Pb(II) ion adsorption. Meanwhile, other contaminant parameters number of Chemical Oxygen Demand (COD), Total Suspended Solid (TSS), and dye in wastewater were also remarkably reduced by about 74.4%, 88.0%, and 96.7%, respectively. The reusability of SB-MH with 4th repetitions showed only a slight decrease in performance of 5%. Therefore, the proposed magnetic amine-functionalized sugarcane bagasse biocomposites lead to a very potential adsorbent implemented in high scale due to high surface area, easy separation, stable materials and capability to adsorb contaminants from aqueous solution.

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Section: Resultssupporting

confidence: 94%

The Amine Functionalized Sugarcane Bagasse Biocomposites as Magnetically Adsorbent for Contaminants Removal in Aqueous Solution

et al. 2021

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“…Its sources mainly come from exceeding the standard discharge of industrial wastewater containing heavy metals. The emission of heavy metals will cause serious harm to the biological environment and human health because of their toxicity and difficult biodegradability . Heavy metal materials are chemically stable and cannot be decomposed.…”

Section: Introductionmentioning

confidence: 99%

Microstructural modification of organo‐montmorillonite with Gemini surfactant containing four ammonium cations: molecular dynamics (MD) simulations and adsorption capacity for copper ions

Chu

Khan

Xia

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND: Copper is a heavy metal that is widely available in nature and has attracted people's attention because of its toxicity and difficult biodegradability. Using modified montmorillonite to adsorb copper ions (Cu 2+ ) was widely adopted because of its simple operation, high efficiency, and easy availability. RESULTS: Na-montmorillonite (Na-Mt) was modified through a Gemini surfactant (containing four ammonium cations) to explore the adsorption capacity for Cu 2+ in aqueous media. The resulting product is called G-Mt. FT-IR XRDBET results indicated that Gemini surfactant has significantly intercalated into the montmorillonite interlayers. The results ofbatch adsorption experiments presented that the amount of adsorbed (qe) depend on pH value and qe (G-Mt) can reach to 29.30 mg/g, which was greater than that of Na-Mt (25.30 mg/g) when pH is 6.0 and initial Cu 2+ concentration is 75 mg/L. The experimental data matched well with Langmuir isotherm. The thermodynamic analysis implied that adsorption of Cu 2+ was endothermic and a spontaneous process. Molecular dynamics (MD) models were carried out to investigate the microstructure and kinetic information of Gemini cations in the interlayer of G-Mt. The results elucidated that the distribution and interaction characteristic of ammonium cations of Gemini surfactant including four ammonium cations were completely different from that of the quaternary ammonium salts containing asingle ammonium cation. CONCLUSION: Generally, considering the comprehensive performances, polyamine Gemini surfactant to modify montmorillonite can improve its ability to adsorb Cu 2+ . The micro environment in the interlayer space and adsorption properties of G-Mt on Cu 2+ , which will improve the potential utilization of G-Mt in soil remediation or wastewater treatment. Y Chu et al.with the original clay. 10,11 Luo et al. 12 used butane-1,4-bis(dodecyl dimethyl ammonium bromide) (gBDDA)-and dodecyl trimethyl ammonium bromide (DTMA)-modified montmorillonite (Mt) to adsorb chromate and phenol. The study revealed that using a Gemini surfactant such as gBDDA to modify Mt would significantly reduce or even have the potential to eradicate the secondary pollution by modifier release during the adsorption process. Li et al. 13 used propyl bis(hexadecyl dimethyl ammonium) chloride (16-3-16)-modified calcium montmorillonite (Ca-Mt) to obtain organo-montmorillonite (G-Mt). The material was used to adsorb a class of emerging contaminants (ECs) such as 1-hydroxybenzotriazole (HOBT), 1H-benzotriazole (BTA) and 5-methyl-1H-benzotriazole (TTA) from wastewater. The maximum adsorption capacities at equilibrium were 25.93, 18.31 and 16.24 mg g −1 for HOBT, BTA and TTA respectively, greater than that of Ca-Mt.Recently, dimeric Gemini surfactant-modified organo-Mts have been of interest to researchers for their applications for adsorbing organic pollutants. 14,15 These dimeric Gemini surfactants generally contain two hydrophilic head groups and two hydrophobic chains linked by a spacer and are expected to ex...

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“…The stretching of OH groups and angular deformation of H-O-H bands in the interlayer water molecules occur at 3468 and 1648 cm −1 , respectively [33]. Bands at near 1031 and 795 cm −1 are assigned to the Si-O vibrations of tetrahedral layers [2,34]. The pair of bands at 525 and 464 cm −1 result from Si-O-Al and Si-O-Si bending vibrations, respectively [2,32].…”

Section: Resultsmentioning

confidence: 99%

“…Bands at near 1031 and 795 cm −1 are assigned to the Si-O vibrations of tetrahedral layers [2,34]. The pair of bands at 525 and 464 cm −1 result from Si-O-Al and Si-O-Si bending vibrations, respectively [2,32]. The FTIR spectrum of CTBC shows a band at near 1645 cm −1 indicating the bending vibration of water.…”

Section: Resultsmentioning

confidence: 99%

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Adsorption characteristics of Cu (II) onto CaCl₂ pretreated algerian bentonite

Ouakouak

Rihani

Youcef

et al. 2020

Mater. Res. Express

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Calcium treated bentonite clay (CTBC) was prepared by CaCl 2 impregnation of Algerian bentonite clay. The prepared adsorbent was characterized and successfully used to remove Cu (II) ions from aqueous solutions at different conditions (pH, stirring time and initial copper concentration). Results showed that the raw bentonite was changed completely into Ca-bentonite, which exhibits a high adsorption capacity (qt=19.98 mg g −1 ) at pH=5.0. It appeared that the sorption mechanisms are simultaneous and strongly depend on pH value. In the pH range from 3-10, the removal of copper occurs mainly by ion exchange, surface metal complexation and precipitation of Cu (OH) 2 . It was also found that the experimental data of kinetic adsorption are well fitted by the pseudo-first order model. Equilibrium data obeyed the Langmuir isotherm with maximum adsorption capacity of 55.48 mg g −1 .The mean adsorption energy predicted by Dubinin-Radushkevich model (E=1.55 Kj/mol) shows the physical nature of the adsorption interactions. Results of this study suggest the potential of the prepared CTBC which can be used easily for fast decontamination of wastewater containing toxic metal ions.

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Adsorption of cadmium ions from aqueous solutions using nano-montmorillonite: kinetics, isotherm and mechanism evaluations

Cited by 33 publications

References 33 publications

The Amine Functionalized Sugarcane Bagasse Biocomposites as Magnetically Adsorbent for Contaminants Removal in Aqueous Solution

The Amine Functionalized Sugarcane Bagasse Biocomposites as Magnetically Adsorbent for Contaminants Removal in Aqueous Solution

Microstructural modification of organo‐montmorillonite with Gemini surfactant containing four ammonium cations: molecular dynamics (MD) simulations and adsorption capacity for copper ions

Adsorption characteristics of Cu (II) onto CaCl₂ pretreated algerian bentonite

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Adsorption of cadmium ions from aqueous solutions using nano-montmorillonite: kinetics, isotherm and mechanism evaluations

Cited by 33 publications

References 33 publications

The Amine Functionalized Sugarcane Bagasse Biocomposites as Magnetically Adsorbent for Contaminants Removal in Aqueous Solution

The Amine Functionalized Sugarcane Bagasse Biocomposites as Magnetically Adsorbent for Contaminants Removal in Aqueous Solution

Microstructural modification of organo‐montmorillonite with Gemini surfactant containing four ammonium cations: molecular dynamics (MD) simulations and adsorption capacity for copper ions

Adsorption characteristics of Cu (II) onto CaCl2 pretreated algerian bentonite

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Adsorption characteristics of Cu (II) onto CaCl₂ pretreated algerian bentonite