Removal of Cu(II) from aqueous solution by adsorption onto functionalized SBA-16 mesoporous silica

Xue, Xiaoming; Li, Fengting

doi:10.1016/j.micromeso.2008.03.023

Cited by 184 publications

(100 citation statements)

References 40 publications

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“…The enhancement in intensity may be due to heating of the PPCM to dry the sample and the shift in peak is attributed to the adsorption of the metal on to the surface of the adsorbent. Similar results were also reported by Xue et al in their studies on Removal of Cu(II) from aqueous solution by adsorption onto functionalized SBA-16 mesoporous silica [21].…”

Section: Powder X-ray Diffraction Studiessupporting

confidence: 90%

Adsorption of Cr(VI) from Aqueous Solution onto a Mesoporous Carbonaceous Material Prepared from Naturally Occurring Pongamia pinnata Seeds

Kv¹,

BM²,

RS³

2015

J Environ Anal Toxicol

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Section: Powder X-ray Diffraction Studiessupporting

confidence: 90%

Adsorption of Cr(VI) from Aqueous Solution onto a Mesoporous Carbonaceous Material Prepared from Naturally Occurring Pongamia pinnata Seeds

Kv¹,

BM²,

RS³

2015

J Environ Anal Toxicol

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“…This biosorption feature of the three studied biopolymers (40B, 32A, and 38A) varies unlike those obtained from dried Cephalosporiuma phidicola cells 37 and acid-treated biomass of brown seaweed Laminaria sp. 48 , but in agreement with those gained from Azadirachta indica leaf powder and Posidonia oceanica (L.) fibres 34 .…”

Section: Effect Of Dye Solution Phsupporting

confidence: 84%

“…The acidity degree of wastewater polluted with dye is one of the primary parameters controlling the sorption process due to its impact on both the surface binding sites of the biosorbent and the ionization process of the dye molecule 34 . Change in pH affects the adsorptive process through dissociation of functional groups on the biosorbent surface active sites.…”

Section: Effect Of Dye Solution Phmentioning

confidence: 99%

“…This may be attributed to the presence of hydrogen ions (H + ) at lower pH (acidic dye solution) that compete with dye molecules and reduce the quantity of the adsorbed basic yellow dye by the biopolymers 36 . However, as the pH value of the dye solution approaches 7, the biopolymers surfaces become negatively charged (Figure 3) due to the ionization of functional groups, such as hydroxyl and carboxyl groups present in the three biosorbents, which enhances the sorption of the positively charged dye cations through electrostatic forces of attraction 34 . The maximum adsorption of the dye onto the three biopolymers is recorded at pH range of 5-7.…”

Section: Effect Of Dye Solution Phmentioning

confidence: 99%

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Bioflocculation of Basic Dye onto Isolated Microbial Biopolymers

Elkady¹

2017

Chem.Biochem.Eng.Q.

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Three purified biopolymers isolated from Bacillus velezensis (40B), Bacillus mojavensis (32A) and Pseudomonas (38A) strains were evaluated for dye decolourization as bioflocculants. The decolourization capacity of the three polymers was inspected using C.I 28 basic yellow dye as hazardous pollutant. The chemical compositions of these purified biopolymers were considered by HPLC and FTIR spectrum. The decolourization efficiency of the three purified biopolymers was determined using both real dye polluted wastewater (discharged from AKSA EGYPT acrylic fibres industry) and simulated synthetic wastewater. The maximum decolourization efficiencies of the purified biopolymers of the three studied strains (40B), (32A) and (38A) were 91, 89 and 88 %, respectively. The equilibrium of dye sorption process onto biopolymers was described using Langmuir isotherm equation. However, its kinetics follows the pseudo second order model. The thermodynamic examination investigated the exothermic and spontaneous nature of the decolourization process using the purified biopolymers.

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“…In recent years, the modification of adsorbents with organic functional groups has received great attention due to its high adsorption capacity, high selectivity, and easy regeneration (Chakraborty and Tare, 2006;Kumar et al, 2007;Xue et al, 2008). The functional groups on the surfaces of the adsorbents play important roles in the adsorption performance.…”

Section: Introductionmentioning

confidence: 99%

Preparation of organically functionalized silica gel as adsorbent for copper ion adsorption

Wang

Kang

Liu

et al. 2009

Journal of Environmental Sciences

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A novel adsorbent (AMPS-silica) was synthesized by bounding AMPS (2-acrylamido-2-methylpropanesulfonic acid) onto silica surface, which functioned with γ-methacryloxypropyltrimethoxysilane reagent. The adsorbent was characterized by nitrogen adsorption/desorption measurement, thermogravimetric analysis (TGA) and potentiometric titration analysis. The TGA result indicated that the surface modification reactions introduced some organic functional groups onto the surface of silica. The surface area of AMPSsilica was 389.7 m 2 /g. The adsorbent was examined for copper ion removal in series of batch adsorption experiments. Results showed that the adsorption of Cu 2+ onto AMPS-silica was pH dependent, and the adsorption capacity increased with increasing pH from 2 to 6. The adsorption kinetics showed that Cu 2+ adsorption was fast and the data fitted well with a pseudo second-order kinetic model. The adsorption of Cu 2+ onto AMPS-silica obeyed both Freundlich and Langmuir isotherms, with r 2 = 0.993 and r 2 = 0.984, respectively. The maximum Cu 2+ adsorption capacity was 19.9 mg/g. The involved mechanism might be the adsorption through metal binding with organic functional groups such as carboxyl, amino and sulfonic groups. Cu 2+ loaded on AMPS-silica could be desorbed in HNO 3 solution, and the adsorption properties remain stable after three adsorption-desorption cycles.

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Removal of Cu(II) from aqueous solution by adsorption onto functionalized SBA-16 mesoporous silica

Cited by 184 publications

References 40 publications

Adsorption of Cr(VI) from Aqueous Solution onto a Mesoporous Carbonaceous Material Prepared from Naturally Occurring Pongamia pinnata Seeds

Adsorption of Cr(VI) from Aqueous Solution onto a Mesoporous Carbonaceous Material Prepared from Naturally Occurring Pongamia pinnata Seeds

Bioflocculation of Basic Dye onto Isolated Microbial Biopolymers

Preparation of organically functionalized silica gel as adsorbent for copper ion adsorption

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