Removal of Copper and Nickel from Aqueous Solutions Using Chitosan Coated on Perlite as Biosorbent

Kalyani, Swayampakula; Priya, J. Ajitha; Rao, P. Srinivasa; Krishnaiah, A.

doi:10.1081/ss-200055940

Cited by 110 publications

(39 citation statements)

References 22 publications

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“…The physical modification was performed by embedding chitosan with bentonite which can provide physical support and increase the accessibility of binding sites (Boddu et al 2003). In previous studies, various types of solids have been coated with chitosan such as bentonite (Gecol et al 2006), perlite (Hasan et al 2006;Kalyani et al 2005), montmorillonite (Fan et al 2006;Wang and Wang 2007), alumina (Boddu et al 2003, activated clay (Chang and Juang 2004), calcium alginate (Vijaya et al 2008), and silica (Vijaya et al 2008). However, the application of chitosan-coated bentonite in the adsorption of tartrazine has not been studied.…”

Section: Introductionmentioning

confidence: 99%

Preparation, Characterization, and Environmental Application of Crosslinked Chitosan-Coated Bentonite for Tartrazine Adsorption from Aqueous Solutions

Ngah

Ariff

Hanafiah

2009

Water Air Soil Pollut

136

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The preparation, characterization, and environmental application of crosslinked chitosancoated bentonite (CCB) beads for tartrazine adsorption have been investigated. CCB beads were characterized by using Fourier transform infrared spectrophotometer (FTIR), scanning electron microscope (SEM), and Brunauer-Emmett-Teller (BET) surface area and Barrett-Joyner-Halenda (BJH) pore size distribution analyses were also determined. The values of pH of the aqueous slurry and pH of zero point charge (pH ZPC ) were almost equal. The adsorption at equilibrium of tartrazine was found to be a function of pH of the solution, stirring rate, contact time, and tartrazine concentration. The optimum conditions for tartrazine adsorption were pH 2.5, stirring rate of 400 rpm and contact time of 80 min. Pseudo-first-order and pseudo-second-order models were used to analyze the kinetics of adsorption with the latter found to agree well with the kinetics data, suggesting that the rate determining step may be chemisorption. The two most common isotherm models, Langmuir and Freundlich, were used to describe the adsorption equilibrium data. On the basis of Langmuir isotherm model, the maximum adsorption capacities were determined to be 250.0, 277.8, and 294.1 mg g −1 at 300, 310, and 320 K, respectively. Desorption studies were carried out at different concentrations of EDTA, H 2 SO 4 , and NaOH. All desorbing solutions showed poor recovery of tartrazine.

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Section: Introductionmentioning

confidence: 99%

Preparation, Characterization, and Environmental Application of Crosslinked Chitosan-Coated Bentonite for Tartrazine Adsorption from Aqueous Solutions

Ngah

Ariff

Hanafiah

2009

Water Air Soil Pollut

136

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“…Different kinds of substances have been used to form composite with chitin and chitosan such as montmorillonite [41], polyurethane [42], activated clay [43], bentonite [44], polyvinyl alcohol, polyvinyl chloride, kaolinite [45], oil palm ash [46] and perlite [47]. Chitin with bentonite composites have been proven better adsorption capacity and resistance to acidic environment [48].…”

Section: Introductionmentioning

confidence: 99%

Sorption studies on heavy metal removal using chitin/bentonite biocomposite

Saravanan

Gomathi

Sudha

2013

International Journal of Biological Macromolecules

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“…The CTS composites, one of the CTS-based materials, are economically feasible because they are easy to prepare and involve inexpensive chemical reagents. These CTS composites have been applied for the adsorption of heavy metal ions, such as CTS/ceramic alumina composites, CTS/perlite composites [7,8], CTS/magnetite composites [9][10][11][12], CTS/cotton fiber composites [13], CTS/ poly(vinyl alcohol) (PVA) composites [14], CTS/poly(vinyl chloride) (PVC) composite [15], and CTS/bentonite composites. Although some performance of CTS has been improved by adding new component, there are some problems for the CTS composites, such as the adsorption capacity which generally decreases compared with pure CTS.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Ni(II) ion on Ni(II) ion-imprinted magnetic chitosan/poly(vinyl alcohol) composite

et al. 2015

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Magnetic chitosan/poly(vinyl alcohol)/Ni(II) beads (m-CTS/PVA/Ni(II)s) were prepared by blending CTS, PVA, Ni(II), and Fe 3 O 4 . Ni(II)-imprinted m-CTS/PVA beads (Ni(II)-IMCPs) were obtained by eluting Ni(II) ions from the m-CTS/PVA/Ni(II)s. The optimal conditions for preparing Ni(II)-IMCPs are 2.0 % (w/w) for CTS, 1.5 % (w/w) for PVA, 0.8 % (w/w) for Ni (NO 3 ) 2 , and 2.0 % (w/w) for Fe 3 O 4 . The Fourier transform infrared spectroscopy (FT-IR) analysis implies that the coordinating atoms may be N atom of -NH 2 in chitosan and O atom of -OH in poly(vinyl alcohol). The X-ray diffraction (XRD) patterns indicate that there are the Fe 3 O 4 characteristic diffraction peaks and the decrease of the crystallinity for CTS. The study on the adsorptive performances of Ni(II)-IMCPs shows that the process of adsorption is good fitted to Langmuir model and the maximum adsorption capacity of Ni(II)-IMCPs for Ni(II) ions is 500.0 mg g −1 (conditions: V=20 mL, m=0.050 g, contact time=6 h, at 25°C). Kinetic models were used for interpreting data obtained from batch experiments, which show that the whole adsorption processes for Ni(II) ions on Ni(II)-IMCPs are in accordance with pseudo-second-order kinetic equation. The study of repeating and selective adsorption indicates that Ni(II)-IMCPs have good durability and selectivity for Ni(II) ions.

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Removal of Copper and Nickel from Aqueous Solutions Using Chitosan Coated on Perlite as Biosorbent

Cited by 110 publications

References 22 publications

Preparation, Characterization, and Environmental Application of Crosslinked Chitosan-Coated Bentonite for Tartrazine Adsorption from Aqueous Solutions

Preparation, Characterization, and Environmental Application of Crosslinked Chitosan-Coated Bentonite for Tartrazine Adsorption from Aqueous Solutions

Sorption studies on heavy metal removal using chitin/bentonite biocomposite

Adsorption of Ni(II) ion on Ni(II) ion-imprinted magnetic chitosan/poly(vinyl alcohol) composite

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