The removal of acid dye from effluent using natural adsorbents—I peat

Poots, V.J.P.; McKay, Gordon; Healy, Julie

doi:10.1016/0043-1354(76)90036-1

Cited by 398 publications

(152 citation statements)

References 4 publications

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“…If intraparticle diffusion is assumed to be the sole rate-controlling step, the plot passes through the origin. 23 However, the plot for all the adsorbent did not pass through the origin. Three stages were observed for the adsorption of Cu(II) on the adsorbents carob and grape seed (Figure 6d).…”

Section: Kinetic Studiesmentioning

confidence: 99%

Adsorption of Cu(II) on three adsorbents, Fe$_{3}$O$_{4}$/Ni/Ni$_{x}$B nanocomposite, carob (Ceratonia siliqua), and grape seeds: a comparative study

Çiftçi¹

2017

Turk J Chem

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Abstract:A novel adsorbent Fe 3 O 4 /Ni/Ni x B nanocomposite was synthesized and used for the adsorption of copper.Moreover, natural adsorbents carob and grape seeds were used for this purpose. The surfaces and the elemental compositions of the adsorbents were characterized by SEM-EDX. The zero point charges of pH of Fe 3 O 4 /Ni/Ni x B nanocomposite, carob, and grape seeds were found as 8.4, 6.0, and 5.6, respectively. The Langmuir, Freundlich, and Dubinin-Radushkevich isotherm models were used for the identification of the mechanism of the adsorption. The adsorptions of Cu(II) on the three adsorbents were well fitted to the Langmuir isotherm. The maximum adsorption capacities obtained from the Langmuir isotherm were 106.4, 15.6, and 15.9 mg/g for Fe 3 O 4 /Ni/Ni x B nanocomposite, carob, and grape seeds, respectively. The equilibrium data of the isotherm models indicated that the Cu(II) adsorptions were favorable for all the adsorbents. The pseudo-first-order, pseudo-second-order, and Weber-Morris intraparticle diffusion models were used for the validation of the adsorption kinetics. The kinetic data were better fitted to the pseudo-second-order kinetic model for all the adsorbents. Fe 3 O 4 /Ni/Ni x B nanocomposite, carob, and grape seeds are promising adsorbents for the adsorption of Cu(II) from water samples. The removal efficiencies were all about 100%.

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Section: Kinetic Studiesmentioning

confidence: 99%

Adsorption of Cu(II) on three adsorbents, Fe$_{3}$O$_{4}$/Ni/Ni$_{x}$B nanocomposite, carob (Ceratonia siliqua), and grape seeds: a comparative study

Çiftçi¹

2017

Turk J Chem

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“…The synthetic dyes have complex molecular structures, which make them more stable and diffi cult to biodegrade 4, 5 . The dyes are designed to be resistant to fading by chemicals and light 6 . They are stable to high temperatures and enzyme degradation resulting from the detergent washing.…”

Section: Introductionmentioning

confidence: 99%

Modeling of experimental data for the adsorption of methyl orange from aqueous solution using a low cost activated carbon prepared from Prosopis juliflora

Kumar

Tamilarasan

2013

Polish Journal of Chemical Technology

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This paper presents the feasibility for the removal of methyl orange (MO) dye from aqueous solution using an activated carbon prepared from Prosopis julifl ora bark. Batch adsorption experiments were carried out as a function of pH, contact time, adsorbate concentration, adsorbent dosage and temperature. The commonly applicable isotherms namely Freundlich and Langmuir equations are used for the prediction of isotherm parameters. A comparison of linear least-square method and a trial-and-error non-linear method are examined in Freundlich and Langmuir (Four forms) isotherms. The nature of adsorption isotherm feasibility was evaluated with dimensionless separation factors (R L ). The dynamics of adsorption process was analyzed with Lagergren's Pseudo-fi rst order and Pseudo-second order kinetic equations. Thermodynamic parameters like the change in enthalpy (∆H o ), change in entropy (∆S o ) and change in Gibbs free energy (∆G o ) were evaluated and ΔG o shows a negative value whereas ΔH o shows the positive value indicating that the adsorption process was spontaneous and endothermic in nature. The functional group characterization of the adsorbent was done using Fourier transform infrared spectroscopy (FTIR). The thermal stability of activated carbon was analyzed using Thermo gravimetric analysis (TGA) and Differential thermal analysis (DTA).

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“…8 Investigations have recently been directed to alternative sorbents, also known as low-cost or unconventional, based on both the environmental and the economical points of view. [9][10][11][12][13][14][15][16][17][18][19][20] In order to overcome high cost problems, an increasing interest in producing new alternative sorbent materials to replace the most used activated carbon has been raised, also taking into account local availability, since these new materials are frequently constituted of residues from agricultural activity or sea food processing. 21 Brazil has a high potential for lignocellulosic fiber production.…”

Section: Introductionmentioning

confidence: 99%

Epicarp and mesocarp of babassu (Orbignya speciosa): characterization and application in copper phtalocyanine dye removal

Vieira¹,

Santana²,

Bezerra³

et al. 2011

J. Braz. Chem. Soc.

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Os componentes mesocarpo e epicarpo do coco babaçu foram utilizados como novos biossorventes alternativos para remoção do corante têxtil ftalocianina de cobre de soluções aquosas. Esses biopolímeros foram caracterizados por análise elementar, RMN de 13 C no estado sólido, espectroscopia de absorção na região do infravermelho, análise termogravimétrica e difratometria de raios X. Os resultados mostraram que a composição do mesocarpo e do epicarpo é similar à de outros materiais lignocelulósicos e que ambos os componentes são efetivos na remoção do corante têxtil Turqueza Remazol. O modelo cinético de pseudo-segunda ordem resultou no melhor coeficiente de correlação tanto para o epicarpo quanto para o mesocarpo (R 2 = 0,999), com constantes de velocidade de sorção, k 2 , de 0,31 e 1,43 g mg -1 min -1 , respectivamente. Os modelos de Langmuir e Freundlich foram empregados para analisar os dados experimentais em sua forma linearizada. O segundo modelo apresentou melhor adequação para a adsorção do corante Turqueza Remazol com sorção máxima de 1,44 e 2,38 mg g -1 a pH 6,0 para mesocarpo e epicarpo, respectivamente.The mesocarp and epicarp components of the babassu palm tree were applied as novel alternative biosorbents for copper phtalocyanine textile dye removal from aqueous solutions. The natural biopolymers were characterized by elemental analyses, solid state 13 C NMR, infrared spectroscopy, thermogravimetric analysis and X-ray diffractometry. Results demonstrated that the compositions of the mesocarp and epicarp are similar to those of other lignocellulosic materials, and that they were very effective for removal of the textile dye Turquoise Remazol. A pseudo second-order kinetic model resulted in the best fit with experimental data for both epicarp and mesocarp (R 2 = 0.999), providing rate constants of sorption, k 2 , of 0.31 and 1.43 g mg -1 min -1 , respectively. The Langmuir and Freundlich isotherm models were employed for adsorption analysis of the experimental data in their linearized forms. The second model resulted in the better fit for Turquoise Remazol dye, which presented maximum adsorption of 1.44 and 2.38 mg g -1 at pH 6.0 for mesocarp and epicarp, respectively.

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The removal of acid dye from effluent using natural adsorbents—I peat

Cited by 398 publications

References 4 publications

Adsorption of Cu(II) on three adsorbents, Fe$_{3}$O$_{4}$/Ni/Ni$_{x}$B nanocomposite, carob (Ceratonia siliqua), and grape seeds: a comparative study

Adsorption of Cu(II) on three adsorbents, Fe$_{3}$O$_{4}$/Ni/Ni$_{x}$B nanocomposite, carob (Ceratonia siliqua), and grape seeds: a comparative study

Modeling of experimental data for the adsorption of methyl orange from aqueous solution using a low cost activated carbon prepared from Prosopis juliflora

Epicarp and mesocarp of babassu (Orbignya speciosa): characterization and application in copper phtalocyanine dye removal

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