Adsorption of Alizarin Red S onto Biosorbent of Lantana camara: Kinetic, Equilibrium Modeling and Thermodynamic Studies

Gautam, Ravindra Kumar; Gautam, Pavan Kumar; Chattopadhyaya, M. C.; Pandey, J. D.

doi:10.1007/s40010-014-0154-4

Cited by 34 publications

(15 citation statements)

References 30 publications

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“…In other words, the number of dye molecules in the solution will be higher than active sites available on the adsorbent surface for higher initial dye concentrations. In contrast, at the case of lower initial dye concentrations, the ratio of initial number of dye molecules in the solution to the available adsorption active sites on the surface of the adsorbent is low and subsequently the fractional adsorption becomes independent of initial concentration (Gautam et al 2014a). Figure 5 shows the adsorption equilibrium vs. temperature at initial TZ concentrations 100 ppm.…”

Section: Adsorbent Characterizationmentioning

confidence: 99%

Batch and fixed-bed adsorption of tartrazine azo-dye onto activated carbon prepared from apricot stones

et al. 2016

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This work describes the potential of utilizing prepared activated carbon from apricot stones as an efficient adsorbent material for tartrazine (TZ) azo-dye removal in a batch and dynamic adsorption system. The results revealed that activated carbons with well-developed surface area (774 m 2 /g) and pore volume (1.26 cm 3 /g) can be manufactured from apricot stones by H 3 PO 4 activation. In batch experiments, effects of the parameters such as initial dye concentration and temperature on the removal of the dye were studied. Equilibrium was achieved in 120 min. Adsorption capacity was found to be dependent on the initial concentration of dye solution, and maximum adsorption was found to be 76 mg/g at 100 mg/L of TZ. The adsorption capacity at equilibrium (q e) increased from 22.6 to 76 mg/g with an increase in the initial dye concentrations from 25 to 100 mg/L. The thermodynamic parameters such as change in free energy (DG 0), enthalpy (DH 0) and entropy (DS 0) were determined and the positive value of (DH) 78.1 (K J mol-1) revealed that adsorption efficiency increased with an increase in the process temperature. In fixed-bed column experiments, the effect of selected operating parameters such as bed depth, flow rate and initial dye concentration on the adsorption capacity was evaluated. Increase in bed height of adsorption columns leads to an extension of breakthrough point as well as the exhaustion time of adsorbent. However, the maximum adsorption capacities decrease with increases of flow rate. The breakthrough data fitted well to bed depth service time and Thomas models with high coefficient of determination, R 2 C 94.

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Section: Adsorbent Characterizationmentioning

confidence: 99%

Batch and fixed-bed adsorption of tartrazine azo-dye onto activated carbon prepared from apricot stones

et al. 2016

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“…The pH of the solution influences the solubility of adsorbate molecules as well as the surface chemistry of the adsorbent by causing dissociation of functional groups . Alizarin red S and tartrazine are anionic dyes and upon dissolution, they release colored anions in the aqueous media . As charged moieties, their sorption is predominantly governed by the charge at the surface of the adsorbent.…”

Section: Resultsmentioning

confidence: 99%

“…52 Alizarin red S and tartrazine are anionic dyes and upon dissolution, they release colored anions in the aqueous media. 35,53 As charged moieties, their sorption is predomi-…”

Section: Dependence On Phmentioning

confidence: 99%

Biogenic fabrication of iron nanoadsorbents from mixed waste biomass for aqueous phase removal of alizarin red S and tartrazine: Kinetics, isotherm, and thermodynamic investigation

Gautam

Shivapriya

Banerjee

et al. 2019

Env Prog and Sustain Energy

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Present work deals with the facile and ecologically viable production of iron nanoadsorbents by utilizing different waste plant biomass, orange peel, flower waste, and environmentally harmful Alligator weed. The as‐prepared nanoadsorbents were applied for the aqueous phase minimization of toxic dyes, alizarin red S and tartrazine. Different techniques, namely, X‐ray diffraction, Fourier transform infra‐red spectroscopy, scanning electron microscopy, dynamic light scattering and magnetic properties measurement system, were applied to characterize the synthesized material. Impact of various experimental conditions like pH, adsorbent dose, contact time, and temperature on removal trend was examined. The acidic medium positively favored the process of sorption. Kinetic analysis revealed that the adsorption of both the dyes followed pseudo‐second‐order kinetic model. Equilibrium sorption data were fitted better to Freundlich model as compared with Langmuir model. The maximum adsorption capacities at 50°C were 42.58 and 68.78 mg g–1 for alizarin red S and tartrazine at pH 4.0 and 2.0, respectively. Thermodynamic parameters exhibited that the sorption of both the dyes onto nanoadsorbent was spontaneous and endothermic with increased randomness at the solid–liquid interface. Desorption experiment demonstrated that the regenerated adsorbent can be recycled efficiently up to three times. Overall, the prepared nanomaterials exhibit remarkable removal competency for both dyes tested like alizarin red S and tartrazine.

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“…ARS is applied as an acid-base indicator, 8 a red textile dye, 9 for staining in histology 10 and as a chromogenic agent for selective spectroscopic determination of some compounds. 11 For removing ARS from wastewaters, various kinds of adsorbents were used, such as activated carbon/γ-Fe 2 O 3 nano-composite, 12 modified nano-sized silica, 13 magnetic chitosan, 14 lantana camara, 15 coconut shell activated carbon, 16 activated clay modified by iron oxide, 17 Fe 3 O 4 /CeO 2 nanocomposite, 18 calcined [Mg/Al, Zn/Al and MgZn/Al]-LDH, 19 nanocrystalline Cu 0.5 Zn 0.5 Ce 3 O 5 , 20 activated carbon engrafted with Ag nanoparticles, 21 nano-Fe 3 O 4 and corn cover composite 22 and chitosan/ZnO nanorod composite. 23 The q e,max value values of these adsorbents are tabulated in Table 1.…”

Section: Introductionmentioning

confidence: 99%

GO/PAMAM as a High Capacity Adsorbent for Removal of Alizarin Red S: Selective Separation of Dyes

Rafi

Samiey

Cheng

2020

ACSi

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Adsorption of Alizarin Red S (ARS) on graphene oxide/poly(amidoamine) (GO/PAMAM) was studied at different ARS initial concentrations, temperatures, pHs, shaking rates and contact times. Adsorption sites of GO/PAMAM were phenolic –OH (Ph) group of GO and amine groups (–NH2, –NH+ 3 and –NHR+2) of PAMAM dendrimer moieties of GO/PAMAM. At pH = 2 and 318 K, maximum adsorption capacity (qe,max) of the adsorbent was 1275.2 mg g–1 which is one of the highest capacity in the literature. Thus, GO/PAMAM in this work acted as a superadsorbent for ARS. At the incipient of adsorption, ARS– molecules were adsorbed on Ph sites that was reaction-controlled step, (Ea = 114.5 kJ mol–1). Adsorption of ARS–on the remaining sites was diffusion–controlled. In alkaline media, two other types of ARS molecules were identified during that were adsorbed on Ph and –NH+ 3 sites. Further increasing the pH of the solution, decreased the number these two sites and yielded a reduced adsorption capacity (qe,max). Methylene blue (MB), thionine (Th), pyronin Y (PY), acridine orange (AO), methyl blue (MEB) and janus green (JG) dyes were selectively separated from their mixtures with ARS molecules using GO/PAMAM at pH of 2. The used adsorbent was recycled fficiently by using ethylenediamine very fast.

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Adsorption of Alizarin Red S onto Biosorbent of Lantana camara: Kinetic, Equilibrium Modeling and Thermodynamic Studies

Cited by 34 publications

References 30 publications

Batch and fixed-bed adsorption of tartrazine azo-dye onto activated carbon prepared from apricot stones

Batch and fixed-bed adsorption of tartrazine azo-dye onto activated carbon prepared from apricot stones

Biogenic fabrication of iron nanoadsorbents from mixed waste biomass for aqueous phase removal of alizarin red S and tartrazine: Kinetics, isotherm, and thermodynamic investigation

GO/PAMAM as a High Capacity Adsorbent for Removal of Alizarin Red S: Selective Separation of Dyes

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