Batch biosorption of lead(II) from aqueous solutions by olive tree pruning waste: Equilibrium, kinetics and thermodynamic study

Blázquez, G.; Martín-Lara, M.A.; Tenorio, G.; Calero, M.

doi:10.1016/j.cej.2010.12.059

Cited by 141 publications

(54 citation statements)

References 46 publications

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“…It is very likely that precipitation of Pb 2+ (in the form of Pb(OH) 2 ) began at pH 5, which perhaps explains why less Pb 2+ was sorbed after pH 5 [19,26]. This observation was consistent with results obtained in [2], [3], [22] and [25] and in contrast with findings observed in [5] and the most probable reason for this is the presence of -NH 2 and -NH linkages in the modifier used. …”

Section: Effect Of Phsupporting

confidence: 83%

Adsorption Studies of Pb2+ From Aqueous Solutions Using Unmodified and Citric Acid – Modified Plantain (Musa paradisiaca) Peels

Aderibigbe¹,

O.U²,

Oluwasina³

et al. 2017

IOSR JAC

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Section: Effect Of Phsupporting

confidence: 83%

Adsorption Studies of Pb2+ From Aqueous Solutions Using Unmodified and Citric Acid – Modified Plantain (Musa paradisiaca) Peels

Aderibigbe¹,

O.U²,

Oluwasina³

et al. 2017

IOSR JAC

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“…A change within the range of absorption bands of certain functional groups, resulting from the adsorption of Ni(II) and Zn(II) on the surface of Y. lipolytica cells, Unauthenticated Download Date | 5/13/18 9:09 AM suggests that these groups are responsible for binding metal ions. A broad band of 3376 cm -1 is indicative of the stretching vibration of the hydroxyl groups of alcohols and carboxylic acids 13 . Band shifts after the biosorption process suggest a signifi cant role of the hydroxyl groups in the adsorption of Ni(II) (change +19) and Zn(II) (change +35 ) on the biosorbent's surface.…”

Section: Ftir Analysismentioning

confidence: 99%

“…The free energy change indicates the degree of spontaneity of the biosorption process, and a higher negative value refl ects more energetically favorable adsorption 13 .…”

Section: Thermodynamic Parametersmentioning

confidence: 99%

“…Finally, it is possible to determine the sorption energy by fi tting the kinetic constant (k 2 ) from the pseudo--second order model at different temperatures to the Arrhenius equation 13 : (6) where k o is the temperature independent factor in (g/mg • min), E A is the activation energy of biosorption in (kJ/mol), R is the gas constant (8.314 J/mol • K) and T is the solution temperature in (K).…”

Section: Biosorption Kineticsmentioning

confidence: 99%

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Biosorption of nickel (II) and zinc (II) from aqueous solutions by the biomass of yeast Yarrowia lipolytica

Wierzba

2017

Polish Journal of Chemical Technology

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This study examined the biosorption process of Ni(II) and Zn(II) from an aqueous solution by dead biomass of Yarrowia lipolytica. Optimum biosorption conditions were determined as a function of pH, biomass dosage, contact time, and temperature. The biosorbent was characterized by FTIR, which indicated the participation of hydroxyl, carboxyl, amide and amine groups in the process of binding the metal ions. The results showed that the biosorption processes of both metal ions closely followed pseudo-second order kinetics. The equilibrium data of Ni(II) and Zn(II) ions at 20, 30 and 40 o C fi tted the Langmuir and Freundlich isotherm models. Langmuir isotherm provided a better fi t to the equilibrium data, with a maximum biosorption capacity of the Y. lipolytica biomass for Ni(II) and Zn(II) of 30.12 and 44.44 mg/g respectively. The calculated thermodynamic parameters demonstrated that the biosorption of Ni(II) and Zn(II) ions onto the Y. lipolytica was feasible, spontaneous and endothermic.

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“…Recentemente, diferentes materiais biológicos vêm sendo testados na remoção do Pb, tais como: resíduos de poda de oliveiras, 9 macroalgas, 10 casca de laranja, 11 bagaço de cana, 12 entre outros. Contudo, há uma busca contínua por novos biossorventes que sejam de baixo custo e eficientes para a remoção de metais.…”

Section: Introductionunclassified

BIOSSORPTION OF Pb(II) BY URUCUM SHELLS (Bixa orellana) IN AQUEOUS SOLUTIONS: KINETIC, EQUILIBRIUM AND THERMODYNAMIC STUDY

Fontana¹,

Chaves²,

Sanchez³

et al. 2016

Química Nova

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BIOSSORPTION OF Pb(II) BY URUCUM SHELLS (Bixa orellana) IN AQUEOUS SOLUTIONS: KINETIC, EQUILIBRIUMAND THERMODYNAMIC STUDY. This study describes the application of new and low cost biosorbent, shells of urucum (Bixa Orellana), for removal of lead ions (Pb(II)) from water solution. The urucum shells were characterized by Fourier transform infrared spectroscopy and scanning electron microscopy techniques. Batch adsorption experiments were performed in order to evaluate the effect of pH, agitation speed, adsorbent dosage, contact time, temperature, presence of interfering ions and matrix effect on the adsorption of process. The kinetics of biosorption followed pseudo-second-order model. Langmuir and Freundlich isotherm models were applied to describe the biosorption of Pb(II) by urucum shells. The Langmuir model showed better fit and the estimated biosorption capacity was 43.6 mg g -1. The negative Gibbs free energy, ΔG°, confirms the spontaneous nature and positive value of enthalpy, ΔH°, the endothermic character of the process. Furthermore, we also performed an evaluation of matrix and others ions effect on the biosorption process.Keywords: urucum shells, biosorption, low cost biosorbent and lead INTRODUÇÃOAtualmente, a poluição ambiental por metais potencialmente tóxi-cos é um dos principais problemas ambientais, principalmente devido ao crescimento tecnológico e industrial.1 A contaminação dos recursos hídricos com estes metais pode gerar problemas graves para o meio ambiente, para a saúde e para a qualidade de vida da população.2 O chumbo (Pb) possui ampla aplicação industrial e consequentemente, o torna um dos principais contaminantes no meio ambiente. Além disso, o Pb é um dos elementos químicos mais tóxicos para saúde humana segundo a Organização Mundial de Saúde.3 As indústrias automotivas, aeronáuticas, de revestimento e de aço geram grandes quantidades de efluentes contendo em sua composição metais potencialmente toxicos. Assim, novas tecnologias e processos alternativos para o tratamento de efluentes industriais têm sido desenvolvidos, visando à redução da concentração de metais no meio ambiente. Dentre estes processos, a biossorção tem sido amplamente estudada para a remoção de vários compostos, incluindo os metais, visado o tratamento de águas e efluentes. [4][5][6][7] O processo de biossorção emprega como adsorvente materiais de origem natural o que o torna uma alternativa, economicamente atrativa, para tratamento de águas e efluentes. Entre as caracterís-ticas dos processos de tratamento por biossorção estão os baixos custos operacionais, minimização do volume de lodos químicos e/ ou biológicos, alta eficiência, tratamento de efluentes muito diluídos e não requer utilização de nutrientes adicionais durante o processo. 8 Entretanto, a biossorção não substitui metodologias existentes, mas pode atuar como um complemento a processos que não são completamente eficientes.Recentemente, diferentes materiais biológicos vêm sendo testados na remoção do Pb, tais como: resíduos de poda de oliveiras, 9 macroalga...

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Batch biosorption of lead(II) from aqueous solutions by olive tree pruning waste: Equilibrium, kinetics and thermodynamic study

Cited by 141 publications

References 46 publications

Adsorption Studies of Pb2+ From Aqueous Solutions Using Unmodified and Citric Acid – Modified Plantain (Musa paradisiaca) Peels

Adsorption Studies of Pb2+ From Aqueous Solutions Using Unmodified and Citric Acid – Modified Plantain (Musa paradisiaca) Peels

Biosorption of nickel (II) and zinc (II) from aqueous solutions by the biomass of yeast Yarrowia lipolytica

BIOSSORPTION OF Pb(II) BY URUCUM SHELLS (Bixa orellana) IN AQUEOUS SOLUTIONS: KINETIC, EQUILIBRIUM AND THERMODYNAMIC STUDY

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