Equilibrium and kinetic studies in adsorption of heavy metals using biosorbent: A summary of recent studies

Febrianto, Jonathan; Kosasih, Aline Natasia; Sunarso, Jaka; Ju, Yi‐Hsu; Indraswati, Nani; Ismadji, Suryadi

doi:10.1016/j.jhazmat.2008.06.042

Cited by 1,440 publications

(797 citation statements)

References 123 publications

(279 reference statements)

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“…They include models of pseudo-first, secondorder kinetic model, model intra-particle diffusion and sorption model Weber and Morris, the relationship of Adam-Bohart Thomas, etc [24]. The adsorption kinetics data of MB using the geopolymer were analyzed with pseudo-first-order [25], pseudo-second-order [26] and intraparticle diffusion kinetic models [27].…”

Section: Adsorption Kineticsmentioning

confidence: 99%

Adsorption of cationic dye onto fly ash-based geopolymer: Batch and fixed bed column studies

et al. 2018

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Abstract. Cationic dye adsorption from aqueous solution onto synthesized geopolymer was investigated by batch and fixed bed column experiments. The geopolymer material was elaborated by alkali solution and fly ash supplied by Jorf Lasfar power plant of Morocco. Physical and chemical characteristics of samples were determined by FX, DRX, SEM, 29 Si MAS NMR and Zeta potential methods. The Brunauer, Emmett and Teller (BET) technique is used to determine the surface area. The Barrett-Joyner-Halenda (BJH) method was performed to obtain pore size distribution curves and average pore diameter. Kinetics data were analyzed using pseudo-first-order, pseudo-second-order and intraparticle diffusion models. To predict the breakthrough curves and determine the main fixed bed column parameters, three kinetic models; Tomas, Bohart-Adams and YoonNelson models are applied to fitting the experimental data. The kinetic study showed that the pseudo-secondorder can be used to describe the methylene blue (MB) adsorption process on the geopolymer matrix. The kinetic models of the adsorption in dynamic column are suitable to describe the continuous adsorption process of dyestuff by the geopolymer. The results of this study indicated that geopolymer derived from fly ash can be used as a low cost effective adsorbent for cationic dye removal from industrial aqueous effluent.

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Section: Adsorption Kineticsmentioning

confidence: 99%

Adsorption of cationic dye onto fly ash-based geopolymer: Batch and fixed bed column studies

et al. 2018

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“…Its value determines how fast the equilibrium in the system can be reached [37]. This parameter usually decreases with increasing of initial solute concentration in the bulk liquid phase [37][38][39][40][41]. Obviously, the higher the initial concentration of solute in bulk liquid phase, the longer time is needed for that system to reach equilibrium state [37].…”

Section: Adsorption Kineticsmentioning

confidence: 99%

Utilization of rarasaponin natural surfactant for organo-bentonite preparation: Application for methylene blue removal from aqueous effluent

Kurniawan

Sutiono

et al. 2011

Microporous and Mesoporous Materials

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“…The results of sorption experiments often are compared with theoretical sorption models such as Langmuir, Freundlich, Dubinin-Radushkevich, Redlich-Peterson model and others [22][23][24][25]. Obtained sorption isotherms for arsenic, antimony and tellurium were compared using Langmuir and Freundlich sorption isotherm models.…”

Section: Sorption Efficiencymentioning

confidence: 99%

Sorption of V and VI group metalloids (As, Sb, Te) on modified peat sorbents

Ansone-Bertina

Kļaviņš

2016

Open Chemistry

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Abstract:The present work investigates arsenic, antimony and tellurium sorption using iron modified peat. The results were obtained using batch tests and the sorption was studied as a function of initial metalloid concentration, pH and sorption time, as well as the presence of competing substances. The obtained results indicate that modification of peat with Fe compounds significantly enhances the sorption capacity of the sorbents used for sorption of arsenic, antimony and tellurium. The optimal pH interval for the sorption of Sb(III) is 6.5-9 and for As(V) and Sb(V) -3-6, while As(III) and tellurium sorption using Fe-modified peat is favourable in a wider interval of 3-9. The presence of competing ions as well as HA affect sorption of metalloids on Fe-modified peat. A minor impact on the reduction of metalloid sorption was detected in the presence of nitrate, sulphate, carbonate and tartrate ions, while in the presence of phosphate and HA the sorption ability of metalloids can be considerably reduced. The obtained results of kinetic experiments indicate that sorption of metalloids on Fe-modified peat mainly occurs relying on mechanisms of physical sorption processes.Keywords: peat, sorbents, arsenic, antimony, tellurium, metalloids Environmental contextGrowing attention is being paid to environmental pollution with metalloids (As, Sb, Te) requiring new approaches for removal of these elements from water. The present work investigates arsenic, antimony and tellurium sorption using iron modified peat. Iron modified peat has high sorption capacity in respect to all environmentally relevant metalloid speciation forms [As(V), As(III), As(org.), Sb(III), Sb(V), Te(IV) and Te(VI)]. The sorption takes place according to mechanisms of physical sorption and is affected by pH of a solution as well as competing ions.

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Equilibrium and kinetic studies in adsorption of heavy metals using biosorbent: A summary of recent studies

Cited by 1,440 publications

References 123 publications

Adsorption of cationic dye onto fly ash-based geopolymer: Batch and fixed bed column studies

Adsorption of cationic dye onto fly ash-based geopolymer: Batch and fixed bed column studies

Utilization of rarasaponin natural surfactant for organo-bentonite preparation: Application for methylene blue removal from aqueous effluent

Sorption of V and VI group metalloids (As, Sb, Te) on modified peat sorbents

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