Recovery of lanthanum(III) from aqueous solution using biosorbents of plant and animal origin: Batch and column studies

Das, Devlina; Varshini, C; Das, Nilanjana

doi:10.1016/j.mineng.2014.06.013

Cited by 77 publications

(21 citation statements)

References 40 publications

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“…A decrease in column sorption capacity (N 0 ) was noticed with an increase in dilution owing to the reduction in the concentration of metal sent through the column. An increase in the rate constant (K a ) was noted with an increase in dilution (up to 50%), which indicated that a considerably shorter bed was required to avoid breakthrough [38].…”

Section: -2 Column Data Modellingmentioning

confidence: 99%

“…The model exhibited a good fit owing to an R 2 value of 0.976. The rate constant (K TH ), the parameter which identified the rate of transfer of solute from liquid to solid phase, was found to increase with an increase in dilution, which signified a higher sorption rate at a low metal concentration due to the availability of more surface functional groups [38].…”

Section: -2 Column Data Modellingmentioning

confidence: 99%

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Application of novel nanobiocomposites for removal of nickel(II) from aqueous environments: Equilibrium, kinetics, thermodynamics and ex-situ studies

Varghese

Das

2015

Korean J. Chem. Eng.

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The current study presents a novel approach for the removal of Ni(II) from aqueous environments using plant gum-based (PG) and clay-based (CL) nanobiocomposite (NBC) composed of ZnO nanoparticles and chitosan. Parameters like pH, contact time, temperature, initial metal concentration and adsorbent dosage were optimized. Under optimized conditions, maximum removal of Ni(II) was noted as 90.1% and 95.5% in the case of PG-NBC and CL-NBC, respectively. Equilibrium studies suggested a homogeneous mode of adsorption. Good linearity was observed for the pseudo-first order kinetic model, suggesting a physical mode of adsorption. Thermodynamic studies showed an endothermic and spontaneous nature of adsorption. The mechanism was further elucidated using SEM, EDX, AFM and FT-IR analysis. Ex-situ studies showed a maximum Ni(II) removal of 87.34% from electroplating wastewater using CL-NBC in column mode. Regeneration studies suggested that CL-NBC could be consistently reused up to 4 cycles.

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Section: -2 Column Data Modellingmentioning

confidence: 99%

Section: -2 Column Data Modellingmentioning

confidence: 99%

Application of novel nanobiocomposites for removal of nickel(II) from aqueous environments: Equilibrium, kinetics, thermodynamics and ex-situ studies

Varghese

Das

2015

Korean J. Chem. Eng.

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“…The column efficiency was evaluated at various bed depths, flow rates and dilutions. The data on breakthrough time and treated volume was analyzed using the bed depth service time model and Thomas models (Das et al, 2014a).…”

Section: Packed Bed Column Studiesmentioning

confidence: 99%

Removal of Ag(I) and Zn(II) ions from single and binary solution using sulfonated form of gum arabic-powdered mushroom composite hollow semispheres: Equilibrium, kinetic, thermodynamic and ex-situ studies

Das

Raghavan

Das

2015

Ecological Engineering

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“…Em alternativa aos métodos clássicos, a biossorção tem sido descrita na literatura científica como um bioprocesso com potencial para a recuperação das TRs por diferentes espécies microbianas (Andrès et al, 2000, Das, 2010, Das et al, 2014, Muraleedharan et al, 1994, Takahashi et al, 2005, Takahashi et al, 2010, Tsuruta, 2002, 2005, 2006a, 2006b, 2007. biossorção consiste num processo de adsorção que se refere a ligação passiva de íons metálicos por biomassa viva ou morta.…”

Section: Introductionunclassified

Avaliação Do Uso De Biomassa Bacteriana Imobilizada Na Biossorção De Terras-Raras Leves E Médias

Coimbra

Nascimento

Giese

2017

HOLOS

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A busca por fontes alternativas de recuperação e separação dos elementos puros de terras--raras (TRs) é vista como uma ação prioritária e estratégica por diversos países demandantes desses elementos. Em alternativa aos processos clássicos de extração de TRs, o processo de biossorção vem sendo avaliado, em uma combinação da biotecnologia e metalurgia extrativa. Sendo assim, o presente trabalho buscou avaliar a capacidade da biomassa imobilizada da bactéria Bacillussubtilis na biossorção de lantânio (TR leve) e samário (TR médio), visando seu uso na separação desses elementos. As maiores porcentagens de biossorção de lantânio (La) e samário (Sm) em sistemas mono--elementares corresponderam à 94,4% e 94,9%, respectivamente, a partir de concentrações iguais (C i ) à 15 mg/L. Em soluções com C i = 100 mg/L, 89,3% de La e 91,9% de Sm foram biossorvidos. O mesmo comportamento pode ser observado para a solução bi--elementar La+Sm, onde 79,9% de La e 88,8% de Sm foram biossorvidos em soluções com C i = 15 mg/L, e, 69,4% de La e 83,4% de Sm foram biossorvidos em C i =100 mg/L. A aplicação dos dados obtidos aos modelos de adsorção de Langmuir e Freundlich demonstrou que as isotermas de adsorção obtidas para La e Sm em ambos os sistemas avaliados foram satisfatórias para ambos os modelos, sugerindo a ocorrência da biossorção em monocamada assim como condições heterogêneas na superfície, onde ambas condições podem co--existir sob as condições experimentais testadas. PALAVRAS--CHAVE:Bacillussubtilis, imobilização celular, alginato de cálcio, biossorção, terras--raras EVALUATION OF THE USE OF BACTERIAL IMMOBILIZED BIOMASS IN LIGHT AND MEDIUM RARE--EARTH ELEMENTS BIOSORPTION ABSTRACTThe search for alternative sources of recovery and separation of pure rare earth elements (REE) is a priority and strategic action by several countries demanding these elements. As an alternative to classical processes of extraction of REE, the biosorption process has been evaluated in a combination between biotechnology and extractive metallurgy. Therefore, the present work aimed to evaluate the capacity of immobilized biomass of Bacillus subtilis to the biosorption of lanthanum (light REE) and samarium (medium REE), aiming its use in the separation of these elements. The highest percentages of lanthanum (La) and samarium (Sm) biosorption in single--element systems corresponded to 94.4% and 94.9%, respectively, from an initial concentration ( i C) of 15 mg/L. In solutions with i C= 100 mg/L, 89.3% of La and 91.9% of Sm were biosorbed. The same behavior can be observed for the bi--elemental solution La + Sm, where 79.9% of La and 88.8% of Sm were biosorbed in solutions of i C= 15 mg/L, and 69.4% of La and 83.4% of Sm were biosorbed in i C= 100 mg/L. The application of the data obtained to the adsorption models of Langmuir and Freundlich showed that the adsorption isotherms obtained for La and Sm in both systems were satisfactory for both models, suggesting the occurrence of monolayer biosorption as well as heterogeneous surface conditions, where bot...

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Recovery of lanthanum(III) from aqueous solution using biosorbents of plant and animal origin: Batch and column studies

Cited by 77 publications

References 40 publications

Application of novel nanobiocomposites for removal of nickel(II) from aqueous environments: Equilibrium, kinetics, thermodynamics and ex-situ studies

Application of novel nanobiocomposites for removal of nickel(II) from aqueous environments: Equilibrium, kinetics, thermodynamics and ex-situ studies

Removal of Ag(I) and Zn(II) ions from single and binary solution using sulfonated form of gum arabic-powdered mushroom composite hollow semispheres: Equilibrium, kinetic, thermodynamic and ex-situ studies

Avaliação Do Uso De Biomassa Bacteriana Imobilizada Na Biossorção De Terras-Raras Leves E Médias

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