Adsorption of a model anionic dye, eosin Y, from aqueous solution by chitosan hydrobeads

Chatterjee, Sudipta; Chatterjee, Sandipan; Chatterjee, Bishnu P.; Das, Anindita; Guha, Arun K.

doi:10.1016/j.jcis.2005.02.055

Cited by 249 publications

(145 citation statements)

References 29 publications

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“…Figure 8 shows the kinetic results of the chitosan adsorption process. Contrary to several similar work in the literature [13,[26][27][28][29][30][31]35], in which the best contact-time was around 100 min, the contact-time necessary for the equilibrium of the IOG chitosan adsorption is of about 5 h. In order to study the adsorption mechanism, the kinetic data was fitted according to the equations (2) and (3) [37,63], that are integrated rate laws for pseudo first-and second orders, respectively; Q e and Q t are the amount of dye adsorbed onto chitosan at equilibrium and a time t, respectively; k 1 (min -1 ) and k 2 (g mg -1 min -1…”

Section: Resultscontrasting

confidence: 61%

“…Due to its molecular structure, featuring the presence of amino (-NH 2 ) and hydroxyl (-OH) groups, chitosan displays a high affinity for many classes of compounds and has been widely used for the removal of transitions metal ions [14][15][16][17][18][19][20][21][22][23][24][25], dyes and inks [26][27][28][29][30][31][32][33][34][35][36][37], lysozime [38], proteins [39], cholesterol [40], urea [41,42] and several other organic compounds [43][44][45][46][47][48][49]. Chitosan can also be chemically modified to produce fibers, composites and supports, improving its adsorption capacity and offering potential applications in several fields [18-24, 29, 38-44, 49, 50].…”

Section: Introductionmentioning

confidence: 99%

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Kinetics and thermodynamics of indanthrene textile dye adsorption onto chitosan

Chaves¹,

Bezerra²,

Santana³

et al. 2010

E-Polymers

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Abstract:The kinetics and equilibrium of Indanthrene Olive Green (IOG) adsorption on chitosan, from aqueous solutions, have been investigated. The chitosan was characterized by XRD, average degree of deacetylation (DD), TGA/DTG, IR, SEM and specific BET surface area. Batch adsorptions experiments were carried out in different pH and dye concentration. An acidic pH condition (4.0 to 6.0) was favorable to the adsorption process. The adsorption followed secondorder rate kinetics and the experimental equilibrium data followed Langmuir isotherm, suggesting that chemisorption might be the major adsorption mode. The adsorptions also occurred on chitosan fibers, being significantly lower than that of crushed chitosan. Thermodynamic parameters ( G°, H°, and S°) were calculated. The positive values of H° (161.7 kJ mol -1 ) and S° (559.9 J mol -1 K -1 ) suggest that the adsorption is endothermic and that during this adsorption process the randomness of the system increases. A simplified adsorption model is also proposed.

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Section: Resultscontrasting

confidence: 61%

Section: Introductionmentioning

confidence: 99%

Kinetics and thermodynamics of indanthrene textile dye adsorption onto chitosan

Chaves¹,

Bezerra²,

Santana³

et al. 2010

E-Polymers

View full text Add to dashboard Cite

show abstract

“…In addition, the intensity of the positive charge on the chitosan polymeric surface can be increased by decreasing the pH value and making the sorption process pH sensitive [14]. The combined effect of (A) and (C) on RR4 removal efficiency is shown in 3-D of Figure 4.…”

Section: Resultsmentioning

confidence: 99%

Optimization of Sorption Parameters for Color Removal of Textile Dye by Cross-linked Chitosan Beads Using Box-Behnken Design

Jawad

Mubarak

Nawawi

2016

MATEC Web of Conferences

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Abstract. Cross-linked chitosan-epichlorohydrin beads (CEB) was prepared and studied for the removal of Reactive Red 4 (RR4) from textile industry. The effect of parameters such as adsorbent dosage (A: 0.5-1.5 g/L), pH (B: 4-10) and time of contact (C: 30-80 min) on the color removal of RR4 was investigated using response surface methodology (RSM) based on Box-Behnken surface statistical design at an initial RR4 concentration, Co = 100 mg/L as a fixed input parameter. The results of RSM indicated that the proposed model predicted the responses adequately within the limits of input parameters being used. Regression analysis showed good fit of the experimental data to the second-order polynomial model with coefficient of determination (R 2 ) value of 0.9958 and Fisher F-value of 185.36. Optimization of adsorbent dose (1.0 g/L), pH (4.0), and contact time (80 min) gave a maximum of 70.53% RR4 removal by CEB.

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“…Numerous methods have been evolved to decolorize wastewater, but still now none of the methods is perfectly treating dye containing wastewater as most of the dyes have complex aromatic structure of synthetic origin and thus hardly amenable to biodegradation (Chatterjee et al 2005). In chemical methods, coagulation produces high concentration of sludge which results in secondary pollution problem because excessive chemicals have to be added in treatment processes.…”

Section: Introductionmentioning

confidence: 99%

Gamma irradiation and steam pretreatment of jute stick powder for the enhancement of dye adsorption efficiency

et al. 2017

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The aim of this study is to find out the facile and effective pretreatment technique to enhance the capacity of jute stick powder (JSP) in adsorbing dye from raw textile effluent. Hence, different pretreatment techniques, i.e., radiation treatment, alkali treatment, ammonia treatment, steam treatment and CaCl 2 treatment were applied to JSP and the adsorbing performance were examined for synthetic dye solutions (Blue FCL and Red RL dye). Different gamma radiation doses were applied on JSP and optimum dye removal efficiency was found at 500 krad in removing these two dyes (50 ppm) from solutions. Among the different pretreatment techniques, gamma irradiated JSP (500 Krad) exhibits highest dye uptake capacity for RED RL dye, whereas steam-treated JSP shows highest performance in adsorbing blue FCL dye. Subsequently, we applied the gamma irradiated and steam-treated JSP on real textile effluent (RTE) and these two techniques shows potentiality in adsorbing dye from raw textile effluent and in reducing BOD 5 , COD load and TOC to some extent as well. Fourier transform infrared spectroscopy (FTIR) analysis also proved that dye has been adsorbed on pretreated JSP.

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Adsorption of a model anionic dye, eosin Y, from aqueous solution by chitosan hydrobeads

Cited by 249 publications

References 29 publications

Kinetics and thermodynamics of indanthrene textile dye adsorption onto chitosan

Kinetics and thermodynamics of indanthrene textile dye adsorption onto chitosan

Optimization of Sorption Parameters for Color Removal of Textile Dye by Cross-linked Chitosan Beads Using Box-Behnken Design

Gamma irradiation and steam pretreatment of jute stick powder for the enhancement of dye adsorption efficiency

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