Adsorbed solution theory based modeling of binary adsorption of nitrobenzene, aniline and phenol onto granulated activated carbon

Jadhav, Ananda J.; Srivastava, Vimal Chandra

doi:10.1016/j.cej.2013.06.021

Cited by 78 publications

(47 citation statements)

References 33 publications

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“…These are higher than that of previously reported porous carbons [1,[14][15][16][17][18][19][20], and the comparisons are shown in Table 3. This illustrates that ACUF-700 possesses very strong adsorption ability and high affinity for anilines, and can be used to remove anilines.…”

Section: Adsorption Properties Of Acuf-700 Towards Anilinescontrasting

confidence: 57%

“…Various methods, such as degradation [2][3][4][5], oxidation [6][7][8][9], membrane separation [10], and adsorption [1,[11][12][13][14][15][16][17][18][19][20], have been established and developed to remove anilines from wastewater. Among these methods, adsorption is effective and widely used due to its higher adsorption capability and relatively simple operability.…”

Section: Introductionmentioning

confidence: 99%

“…Porous activated carbon is an efficient adsorbent because of its high surface area, well-developed internal pore structure and controllable surface functional groups [1,[14][15][16][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effective removal of anilines using porous activated carbon based on ureaformaldehyde resin

Zhang

Xiao-xia

et al. 2015

Korean J. Chem. Eng.

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The effective removal of aniline and its derivatives from wastewater is very important due to the high toxicity. Adsorption with a high-performance adsorbent is an efficient pathway. A novel activated carbon, ACUF-700, was synthesized using homemade ureaformaldehyde resin as the major carbon source carbonized at 700 o C. ACUF-700 is characterized by surface area analyzer, FTIR, elemental analyzer, and SEM. The adsorption properties of ACUF-700 towards anilines are also investigated by using batch methods. The test results showed that the ACUF-700 possesses higher specific surface area and narrower pore size distribution. In virtue of its developed pore structure and nitrogencontaining chemical groups, the adsorption capacities towards aniline, p-toluidine and p-chloroaniline could reach 95.6, 108.1 and 128.9 mg/g, respectively. The adsorption process could be well described by the intra-particle mass transfer diffusion model and Sips model. Besides, ACUF700 was regenerated easily using diluted hydrochloric acid solution as eluent and ACUF700 possesses better reusability.

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Section: Adsorption Properties Of Acuf-700 Towards Anilinescontrasting

confidence: 57%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effective removal of anilines using porous activated carbon based on ureaformaldehyde resin

Zhang

Xiao-xia

et al. 2015

Korean J. Chem. Eng.

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“…The Wilson (see Equation (S1), Supporting information), three-parameter NRTL (NRTL3) and four-parameter NRTL (NRTL4) activity coefficient models were fitted to generated activity coefficient data using the non-linear least square minimisation routine of Matlab with a tolerance of 10 -8 . For a binary system, the parameters of the NRTL3 model (see Equation (S2), Supporting information) are t 12 ; t 21 and a ¼ a 12 ¼ a 21 . In the NRTL4 model, a 12 and a 21 are not equal.…”

Section: Testing Of Adsorbed-phase Activity Coefficient Models Using mentioning

confidence: 99%

“…Erto et al [18] used the Wilson model [19] for calculating adsorbed phase activity coefficients and accounted for the spreading pressure dependency by using an empirical equation proposed by Kopatsis et al [20]. The same model is used in the work published recently by Jadhav and Srivastava [21].…”

Section: Introductionmentioning

confidence: 97%

Evaluating adsorbed-phase activity coefficient models using a 2D-lattice model

Brunchi

Englebienne

Kramer

et al. 2014

Molecular Simulation

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Despite the wide use of the real adsorbed solution theory to predict multicomponent adsorption equilibrium, the models used for the adsorbed phase activity coefficients are usually borrowed from the gas -liquid phase equilibria. In this work, the accuracy of the Wilson and NRTL models for evaluating adsorbed phase activity coefficients is tested using a 2D-lattice model. An accurate model for adsorbed-phase activity coefficients should have no problem in fitting adsorption data obtained using this simple lattice model. The results, however, show that the commonly used Wilson and NRTL models cannot describe the adsorbed phase activity coefficients for slightly non-ideal to strong non-ideal mixtures. Therefore, until new models for adsorbed phase activity coefficients are developed, we should use existing models for liquids with care. In the second part of this work, the use of Monte Carlo simulations on a segregated 2D-lattice model, for predicting adsorption of mixtures is investigated. The segregated model assumes that the competition for adsorption occurs at isolated adsorption sites, and that the molecules from each adsorption site interact with the bulk phase independently. Two binary mixtures in two adsorbent materials were used as case studies for testing the predictions of the segregated 2D-lattice model: the binary system CO 2 -N 2 in the hypothetical pure silica zeolite PCOD8200029, with isolated adsorption sites and normal preference for adsorption, and the binary system CO 2 -C 3 H 8 in pure silica mordenite (MOR), with isolated adsorption sites and inverse site preference. The segregated 2D-lattice model provides accurate predictions for the system CO 2 -N 2 in PCOD8200029 but fails in predicting the adsorption behaviour of CO 2 -C 3 H 8 in pure silica MOR. The predictions of the segregated ideal adsorbed solution theory model are superior to those of the 2D-lattice model.

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