Equilibrium, kinetics and thermodynamics of Cadmium (II) biosorption on to composite chitosan biosorbent

Suguna, Madala; Nadavala, Siva Kumar; Sreenivasulu, Vudagandla; Boddu, Veera M.; Krishnaiah, A.

doi:10.1016/j.arabjc.2013.07.017

Cited by 121 publications

(47 citation statements)

References 37 publications

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“…Pahlavanzadeh et al using different algae biosorbents ( Cystoseria indica , Nizmuddinia zanardini , Sargassum glaucescens , and Padina australis ) indicate the spontaneous and endothermic nature of the adsorption of nickel(II) ions. Madala et al also indicate that adsorption of cadmium(II) ions onto ceramic coated by chitosan is spontaneous and endothermic.…”

Section: Resultsmentioning

confidence: 99%

Adhesive Stalks of DiatomDidymosphenia geminataas a Novel Biological Adsorbent for Hazardous Metals Removal

Wysokowski

Bartczak

Żółtowska-Aksamitowska

et al. 2017

CLEAN Soil Air Water

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The application of biomass derived from the nuisance fresh‐water diatom species Didymosphenia geminata toward the adsorption and removal of heavy‐metal ions from water is reported. The cell‐free polysaccharide‐based stalks of these diatoms are used as adsorbents to remove harmful metal ions: Pb(II), Ni(II), and Cd(II). Detailed analyses of the adsorption kinetics using both pseudo‐first‐order model and pseudo‐second‐order models are performed. The results show a strong correspondence to a pseudo‐second‐order kinetic model. The Langmuir and Freundlich models are used to describe the adsorption isotherms. The correlation coefficients (r2) of the Langmuir model are equal to 0.994 (Pb2+), 0.995 (Cd2+), and 0.995 (Ni2+), and the r2 for the Freundlich model are equal to 0.991 (Pb2+), 0.991 (Cd2+), and 0.987 (Ni2+). The experimental data for all metal ions strongly support the Langmuir isotherm model. It is shown that stalks of D. geminata exhibit exceptional sorption capacity (qm) for Pb(II) ions of 175.48 mg g−1. Additionally, a high sorption capacity for Cd(II) (145.86 mg g−1), and Ni(II) (130.27 mg g−1) is observed. The thermodynamic aspects of the adsorption process of selected metal ions are also discussed. Preliminary tests investigating applications of D. geminata stalks for sewage purification from galvanic industry and battery and accumulator production were performed. These comprehensive studies show that D. geminata can be robustly applied for the removal of harmful metal ions from wastewater.

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Section: Resultsmentioning

confidence: 99%

Adhesive Stalks of DiatomDidymosphenia geminataas a Novel Biological Adsorbent for Hazardous Metals Removal

Wysokowski

Bartczak

Żółtowska-Aksamitowska

et al. 2017

CLEAN Soil Air Water

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“…The observed XRD patterns of pristine biosorbent exhibited three halloo (2u 5 12.28, 21.88, and 29.38) corresponding to amorphous nature, which could be attributed to the presence of some polysaccharides, proteins and fatty acids in the biomass [28]. On treated with Ni (II), the appearance of two new broad peaks at around 2u 5 20.458 and 14.058 having no perfect crystal diffraction implied the strong amorphous biosorbent characteristics, which was also found in other metal biosorbent interaction [29]. In addition, the small changes in peak position and increase in the X-ray intensity in Ni (II) loaded biomass indicated that the metal ions could be easily permeated on the amorphous biosorbent surface [30].…”

Section: Xrd Studymentioning

confidence: 91%

“…In addition, the entropy change suggested increase in randomness during sorbate-sorbent interactions, as the value was found to be positive. Meanwhile, the process favored complexation and stability of sorption [29,49].…”

mentioning

confidence: 99%

Mechanistic exploration of Ni (II) removal by immobilized bacterial biomass and interactive influence of coexisting surfactants

Naskar

Bera

2017

Env Prog and Sustain Energy

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Herein, the adsorption efficiency of biomass based on mutated bacterial strain (Bacillus cereus M 1 16 ) impregnated into calcium alginate towards Ni (II) ions was investigated in batch system. Biomass was characterized by sophisticated instrumental analyses. The influencing process parameters on Ni (II) removal from monometallic system were studied and optimal conditions were ascertained. The performance of such biosorbent on exposure to different metal ions was also evaluated. Especially, this work focused on principal interest in Ni (II) removal in presence of surfactants (Sodium dodecyl sulfate and Triton X-100), where Sodium dodecyl sulfate offered synergetic effect as a function of sorption yield. The best fitted pseudo-second order and film diffusion kinetic model in presence of surfactants provided more suitable prediction reflecting rate controlling steps of Ni (II) removal process. Additionally, experimental data adequately fitted by both Redlich-Peterson and Langmuir-Freundlich dual isotherm model. Thermodynamically the process was found to be spontaneous, endothermic and entropy-driven. Regeneration studies were conducted with a series of five sequential adsorption-desorption cycles. Moreover, biomass proved its worth for effective removal of Ni (II) from simulated inorganic wastewater. Thus, this green chemical approach may have immense potential to be explored in the actual system.

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“…Salicylic acid and Cd can enter into the aquatic environment through various sources such as the pharmaceutical industry, human and veterinary drugs, paper and cosmetic industries, mining, smelting, usage of phosphate fertilizers, use of activated sludge from wastewater treatment plant for agricultural purpose, and various industries like plating, pigments, plastics, and Ni‐Cd batteries. Cadmium and SA can enter the food chain through the contaminated soil or water …”

Section: Introductionmentioning

confidence: 99%

Ion cum molecularly dual imprinted polymer for simultaneous removal of cadmium and salicylic acid

Rahangdale

Kumar

Archana

et al. 2017

J of Molecular Recognition

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Ion cum molecularly dual imprinted polymer (DMIP) was synthesized for the simultaneous removal of salicylic acid (SA) and cadmium (Cd) by suspension polymerization method using chitosan (CTS) as functional polymer, epichlorohydrin as cross-linker, and 4-hydroxy benzoic acid (4HBA) as well as Cd as organic and inorganic templates, respectively. Use of the dummy template 4HBA during the synthesis of DMIP had the advantage of creating imprinted cavities in DMIP, which depicted good uptake for SA. Scanning electron microscopy and Fourier transform reported on the removal of both organic and inorganic pollutants simultaneously. Thus, attention needs to be given on developing more efficient method for removal of organic and inorganic pollutants simultaneously. 1-5In recent years, molecularly imprinting technique has gained much attention because it is a simple and convenient method to develop synthetic polymers showing high affinity towards the targeted analyte.It involves the formation of prepolymerisation complex between the template and functional monomer through covalent or noncovalent interaction in the presence of cross-linking agent. After polymerisation, template molecule is removed using suitable extracting solvent leaving behind memory sites that are complementary to template molecule. 6-10The super cross-linked nature of molecularly imprinted polymers (MIPs)imparts it high physical and chemical stability. In addition, MIPs can be reused without remarkable decrease in their binding capacity. 10-12Ion imprinting technique is a branch of MIP, widely used for synthesizing materials that are capable of recognizing metal ions. Ion imprinted polymers are highly cross-linked polymers synthesized in the presence of metal ion as the template. The template ion is then subsequently removed to get the ion imprinted polymers showing high selectivity towards targeted metal ion. 13,14Dual template imprinting can have several advantages over the conventional technique involving single template. Conventional

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Equilibrium, kinetics and thermodynamics of Cadmium (II) biosorption on to composite chitosan biosorbent

Cited by 121 publications

References 37 publications

Adhesive Stalks of DiatomDidymosphenia geminataas a Novel Biological Adsorbent for Hazardous Metals Removal

Adhesive Stalks of DiatomDidymosphenia geminataas a Novel Biological Adsorbent for Hazardous Metals Removal

Mechanistic exploration of Ni (II) removal by immobilized bacterial biomass and interactive influence of coexisting surfactants

Ion cum molecularly dual imprinted polymer for simultaneous removal of cadmium and salicylic acid

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