Selective adsorption of Pb(II), Cd(II), and Ni(II) ions from aqueous solution using chitosan–MAA nanoparticles

Heidari, Ava; Younesi, Habibollah; Mehraban, Zahra; Heikkinen, Hanna

doi:10.1016/j.ijbiomac.2013.06.032

Cited by 196 publications

(74 citation statements)

References 77 publications

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“…The amount of heavy metal ions adsorbed per specified amount of adsorbent (q) (4) and adsorption efficiency (5) were calculated as follows (Heidari et al 2013): where q (mg/g) is the amount (mg) of metal ions adsorbed per mg of adsorbent (adsorption capacity), Co (mg/L) the initial concentration of metal ions, Ce (mg/L) the final concentration of metal ions, v (mL) the volume of metal solution and w (g) the weight of the adsorbent.…”

Section: Adsorption Kinetics Determination Of Nickel and Cadmium Biosmentioning

confidence: 99%

“…Cadmium toxicity results in a wide range of syndromes including renal dysfunction, hypertension, hepatic injury, lung damage and teratogenic effects. Excessive exposure to nickel can significantly increase the risk of lung, cardiovascular and kidney diseases in humans (Heidari et al 2013). Chromium (Cr), cadmium (Cd) and nickel (Ni) compounds are also widely used in industries, such as leather tanning, electroplating, metal finishing, paint and pigments, and therefore discharge of these metals in large quantities into industrial effluents cannot be ruled out.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and characterization of crystalline carboxymethylated lignin–TEOS nanocomposites for metal adsorption and antibacterial activity

Kumari

Jha

2016

Bioresour. Bioprocess.

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Biodegradable carboxymethylated lignin-tetra ethoxysilane (TEOS) nanocomposites (CML-T) were synthesized using lignin extracted from rice straw (RS) followed by surface modification through carboxymethylation. Composites were characterized by UV-spectroscopy, Fourier transform infrared (FT-IR), scanning electron microscope (SEM), X-ray diffraction pattern (XRD), atomic absorption spectroscopy (AAS) and particle size distribution (PSD). The average diameter (D 50 ) of the CML-T composite particles was observed in the range of 160-560 nm. XRD spectra and SEM micrographs confirmed the high degree of crystallinity (peaks located at lower angle, 2θ = 12 and 22.0°) and porous nature of nanocomposites with increasing concentrations of TEOS. The composite exhibited nickel (Ni 2+ ) and cadmium (Cd 2+ ) adsorption up to 70.72 and 81.79 %, respectively in AAS analysis. The CML-T composite was investigated to assess their future applications as wound dressings and antimicrobial and packaging agents. Based on the antimicrobial properties and potential to remediate toxic heavy metals, the composites are proposed to be used for wastewater treatments, as packaging materials and for preparation of biofilters for environmental protection.

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Section: Adsorption Kinetics Determination Of Nickel and Cadmium Biosmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of crystalline carboxymethylated lignin–TEOS nanocomposites for metal adsorption and antibacterial activity

Kumari

Jha

2016

Bioresour. Bioprocess.

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“…The second reason is that there is a competition between the H + and Co 2+ ions [37,38]. At the high pH values, the adsorption of cobalt(II) ion reaches a plateau due to the formation of different types of cobalt(II) such as Co(OH) + and Co(OH) 2 , which inhibit the adsorption of Co 2+ ions on -MnO 2 [39]. Therefore, a range of pH values has been chosen from 2.0 to 5.5 in order to achieve the optimum adsorption of cobalt.…”

Section: Factors Affecting the Adsorption Of Cobaltmentioning

confidence: 99%

Determination of Cobalt in Seawater Using Neutron Activation Analysis after Preconcentration by Adsorption ontoγ-MnO₂Nanomaterial

Dinh

Nguyen³

et al. 2018

Journal of Chemistry

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The -MnO 2 nanomaterial has been used to adsorb cobalt in the seawater at Phan Thiet City, Binh Thuan Province, Vietnam. Its concentration is determined by using the neutron activation analysis (NAA) method at the Dalat nuclear research reactor. Factors affecting the uptake of cobalt on the -MnO 2 material such as the pH, adsorption time, and initial cobalt(II) concentration are investigated. The irradiated experiment data are calculated using the K0-Dalat program. The results obtained show that the trace dissolved cobalt in Phan Thiet seawater is found equal to 0.25 ± 0.04 g/L ( = 5, = 95%) with the adsorption efficiency being higher than 95% ( = 4, = 95%).

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“…The pH value of the solution has a significant impact on the removal of heavy metals, because it determines degree of ionization of metal ions in aqueous solution and the charge on the surface of adsorbents [25]. Table 4 is an indication of the change in pH after adsorption.…”

Section: Ph Dependence Of Pb Adsorptionmentioning

confidence: 99%

pH Dependence of Lead Adsorption on Zeolites

Kabwadza-Corner¹,

Johan²,

Matsue³

2015

JEP

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The adsorption of Pb on zeolites A4, X, Y and mordenite was studied at various initial pH with the purpose of assessing the pH dependence of Pb adsorption. The adsorption was conducted using 0 -0.6 mM Pb(NO3)2 in the presence of 100 mM NH4NO3 and pH adjustment done using HNO3. The coexisting NH4NO3 served as a representative of other cations available in nature. The study was conducted at initial solution pH ranging from 3 -5. Adsorption results were analyzed using Langmuir isotherm analysis. Adsorption was noted to be dependent on pH with increasing adsorption as pH increased from 3 -5 for zeolites A4, X and Y. The adsorption of Pb on mordenite on the other hand did not show any dependence on pH since it was almost constant within the studied pH range. The adsorptive capacities were 2500, 2000, 588 and 179 mmol•kg −1 for A4, X, Y and mordenite, respectively. The results of this study can be used in designing or planning for the clean-up of polluted water using adsorption techniques. An important attribute of these findings was that the samples studied were shown to have the capacity of removing even very low concentration of Pb, a property which is hardly achievable by most adsorbents.

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Selective adsorption of Pb(II), Cd(II), and Ni(II) ions from aqueous solution using chitosan–MAA nanoparticles

Cited by 196 publications

References 77 publications

Synthesis and characterization of crystalline carboxymethylated lignin–TEOS nanocomposites for metal adsorption and antibacterial activity

Synthesis and characterization of crystalline carboxymethylated lignin–TEOS nanocomposites for metal adsorption and antibacterial activity

Determination of Cobalt in Seawater Using Neutron Activation Analysis after Preconcentration by Adsorption ontoγ-MnO₂Nanomaterial

pH Dependence of Lead Adsorption on Zeolites

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Selective adsorption of Pb(II), Cd(II), and Ni(II) ions from aqueous solution using chitosan–MAA nanoparticles

Cited by 196 publications

References 77 publications

Synthesis and characterization of crystalline carboxymethylated lignin–TEOS nanocomposites for metal adsorption and antibacterial activity

Synthesis and characterization of crystalline carboxymethylated lignin–TEOS nanocomposites for metal adsorption and antibacterial activity

Determination of Cobalt in Seawater Using Neutron Activation Analysis after Preconcentration by Adsorption ontoγ-MnO2Nanomaterial

pH Dependence of Lead Adsorption on Zeolites

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Determination of Cobalt in Seawater Using Neutron Activation Analysis after Preconcentration by Adsorption ontoγ-MnO₂Nanomaterial