Capacity of adsorption of Pb2+ and Ni2+ from aqueous solutions by chitosan produced from silkworm chrysalides in different degrees of deacetylation

Paulino, Alexandre Tadeu; Guilherme, Marcos R.; Reis, Adriano V.; Tambourgi, Elias Basile; Nozaki, Jorge; Muniz, Edvani C.

doi:10.1016/j.jhazmat.2006.12.059

Cited by 104 publications

(43 citation statements)

References 28 publications

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“…Up till now, there has been a focus of various studies about the removal of heavy metal ions from high concentration solution (10-7000 mg/L) [12]. However, wastewater typically contains metals such as copper and cadmium at microgram levels and the most contaminated leachates may contain up to 3 mg/L of heavy metals, except Zn that may achieve 100 mg/L [13].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…The higher adsorption capacity and removal percentage of Cu(II) ascribe to its excellent affinity with adsorbent with Cu(II)[38]. Equilibrium isotherms are used to determine the capacity for metal ions[12]. Therefore, three common absorption isotherms models (Langmuir,Freundlich and Temkin) which are applied to understand the absorbate distributing in liquid/solid phase have been used to simulate the experiment data.…”

mentioning

confidence: 99%

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Synthesis and adsorption behavior of magnetic microspheres based on chitosan/organic rectorite for low-concentration heavy metal removal

Xie

Zeng

Zhang

et al. 2015

Journal of Alloys and Compounds

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Section: Accepted Manuscriptmentioning

confidence: 99%

mentioning

confidence: 99%

Synthesis and adsorption behavior of magnetic microspheres based on chitosan/organic rectorite for low-concentration heavy metal removal

Xie

Zeng

Zhang

et al. 2015

Journal of Alloys and Compounds

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“…Nevertheless, they must be determined quantitatively. [24][25][26][27] In the last years, we have studied the toxic effects of various heavy metals on fish. 1 Therefore, the methods developed here have been widely applied to the determination of metals in ecotoxicological investigations conducted by Universidade Estadual de Maringá and Universidade Estadual de Campinas.…”

Section: Parameters For the Determination Of Al 3+ By Swvmentioning

confidence: 99%

Square Wave Voltammetry in the Determination of Ni2+ and Al3+ in Biological Samples

et al. 2008

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In this contribution, the amounts of Ni (nickel) and Al (aluminum) in tilapias (Oreochromis niloticus) were determined using square wave voltammetry (SWV) with glassy carbon working microelectrode with a mercury thin film, platinum counter electrode, and Ag/AgCl reference electrode. Ni was studied through the formation of the dimethylglyoxime-Ni (Ni-DMG) complex, while Al was studied through the formation of the Alizarin R-Al complex. The detection limit found for Ni-DMG and Alizarin R-Al complexes were 1.70 ¥ 10 -7 and 1.0 ¥ 10 -8 mol L -1 , respectively. The voltammetric anodic curves for the Alizarin R-Al complex were recorded over the potential range from -0.8 to -0.05 V while the voltammetric cathodic curve for the Ni-DMG complex was recorded over the potential range from -0.7 to -1.2 V. These methods detected low concentrations of Ni and Al in biological samples efficiently.

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“…The efficiency of this technique depends on nature of adsorbent. The adsorbent such as activated carbon [12], clay [13], activated alumina [14], chitosan [15], silica [16], zeolite [17] and Hydroxyapatite [18] were used for heavy metal removal.…”

Section: Introductionmentioning

confidence: 99%

Removal of Nickel from Aqueous Solution by Nano Hydroxyapatite Originated from Persian Gulf Corals

Zamani¹,

Salahi²,

Mobasherpour³

2013

Can Chem Trans

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A novel adsorbent, nano crystalline Hydroxyapatite (nano HAp), was synthesized from Persian Gulf coral by a hydrothermal method in order to remove nickel ions from aqueous solutions. Primary powder was characterized using XRD, FTIR and SEM. Also the powder surface area was determined by BET. The influence of different adsorption parameters, such as initial concentration of metal ion, contact time, adsorbent dosage and the temperature on the adsorption amounts of Ni 2+ ions were studied. Nickel uptake was quantitatively evaluated using the Langmuir, Freundlich and Dubinin-Kaganer-Radushkevich (DKR) models. In addition, the equilibrium removal process of nickel ions by the nano HAp was described well with the Langmuir isotherm model, resulting in the maximum adsorption capacity of 2.278 mg/g of Ni 2+ ions on nano HAp. The results of the thermodynamic and kinetic investigations indicated that the adsorption reactions were spontaneous (ΔG• < 0), endothermic (ΔH• > 0) and the pseudo second order model fitted better the adsorption kinetics of Ni 2+ on HAp.

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Capacity of adsorption of Pb2+ and Ni2+ from aqueous solutions by chitosan produced from silkworm chrysalides in different degrees of deacetylation

Cited by 104 publications

References 28 publications

Synthesis and adsorption behavior of magnetic microspheres based on chitosan/organic rectorite for low-concentration heavy metal removal

Synthesis and adsorption behavior of magnetic microspheres based on chitosan/organic rectorite for low-concentration heavy metal removal

Square Wave Voltammetry in the Determination of Ni2+ and Al3+ in Biological Samples

Removal of Nickel from Aqueous Solution by Nano Hydroxyapatite Originated from Persian Gulf Corals

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