Kinetics of adsorption of metal ions on inorganic materials: A review

Gupta, Sanjay; Bhattacharyya, Krishna G.

doi:10.1016/j.cis.2010.12.004

Cited by 689 publications

(275 citation statements)

References 199 publications

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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]. The experimental data of MB adsorption on geopolymer were simulated with three models and the results were presented in Table 2.…”

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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“…[37] In the mixed solution, the intra-particle diffusion constants, C, for Cu(II) and Cr(VI) have the values of 9.3131 and 10.7655, respectively, which means there are more surface adsorption processes present in that mixture solution. [38] Analysis by FTIR, SEM, EDX, and BET As shown in Fig. 5, before the adsorption by carbonized Eupatorium adenophorum, the alkyne C−H bonds have a stretching vibration absorption peak around 3300 cm −1 and multiple bending vibration peaks within 600~700 cm Those results illustrate that there is no obvious change for functional groups before and after the adsorption towards Cu(II) and Cr(VI), indicating that physical adsorption is likely to dominate this adsorption process.…”

Section: Analysis By Adsorption Kinetics Modelsmentioning

confidence: 99%

Study on adsorption of Cu(II)–Cr(VI) binary system by carbonized Eupatorium adenophorum

Chen

Song

Yang

2016

Separation Science and Technology

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We first report a mechanism study on the adsorption of Cu(II)-Cr(VI) binary mixture by a novel low-cost adsorbent, carbonized Eupatorium adenophorum. The influences by pH value, dosage, initial concentration, temperature, and adsorption time on its performance to absorb copper and chromium were investigated. The experimental data were fitted according to the Langmuir and Freundlich adsorption isotherm models, the pseudo-first-order kinetics, the pseudo-second-order kinetics, and the intra-particle diffusion model. The results indicated that when the reaction system was with its pH = 5, the dosage of carbonized Eupatorium adenophorum was 0.1 g, the adsorption time was 30 min, and the temperature was 25°C; the adsorption capacities for Cu(II) and Cr(VI) reached 27.62 mg/g and 9.68 mg/g, respectively. The process of carbonized Eupatorium adenophorum to absorb Cr(VI) is also accompanied by redox reactions. The Langmuir model and the pseudo-second-order model can better fit the experimental data. Observation by fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM) found no significant change of functional groups before and after the adsorption by carbonized Eupatorium adenophorum, and this adsorption process is mainly a physical adsorption. ARTICLE HISTORY

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“…Lagergren equation is probably the first known method to estimate the adsorption speed in liquid phased systems. It is a commonly used equation for the first-order kinetics and expressed as follows [27]:…”

Section: Adsorption Kineticsmentioning

confidence: 99%

Comparison of Acid Red 114 Dye Adsorption by Fe₃O₄and Fe₃O₄Impregnated Rice Husk Ash

Kaykıoğlu

Güneş

2016

Journal of Nanomaterials

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The removal of Acid Red 114 (AR114) dye by adsorption process, using the magnetic nanoparticle (RHA-MNP) which is produced from rice husk ash burned at 300 ∘ C and the magnetic nanoparticle (MNP, Fe 3 O 4 ), was studied. Batch processes were used under different test parameters: pH (2, 4, 6, and 10) and without pH, initial dye concentration (20,40, 60, 80, and 100 mg/L), and contact time (0, 1, 5, 10, 15, 30, 45, 60, 90, and 150 min). Optimum conditions for AR114 removal were found to be at natural pH (pH without correction) for both adsorbents. Freundlich isotherm was found to be more consistent for MNP and Langmuir isotherm was found to be more consistent for RHA-MNP. The maximum adsorption capacities of MNP and RHA-MNP adsorbents for AR114 dye were equal to 111 mg/g. The kinetic experimental data fitted the pseudo-second-order model for both MNP and RHA-MNP. It can be concluded that RHA-MNP which is a waste could be used as low-cost adsorbent to remove AR114 from aqueous solution.

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Kinetics of adsorption of metal ions on inorganic materials: A review

Cited by 689 publications

References 199 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

Study on adsorption of Cu(II)–Cr(VI) binary system by carbonized Eupatorium adenophorum

Comparison of Acid Red 114 Dye Adsorption by Fe₃O₄and Fe₃O₄Impregnated Rice Husk Ash

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Kinetics of adsorption of metal ions on inorganic materials: A review

Cited by 689 publications

References 199 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

Study on adsorption of Cu(II)–Cr(VI) binary system by carbonized Eupatorium adenophorum

Comparison of Acid Red 114 Dye Adsorption by Fe3O4and Fe3O4Impregnated Rice Husk Ash

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Comparison of Acid Red 114 Dye Adsorption by Fe₃O₄and Fe₃O₄Impregnated Rice Husk Ash