Enhanced adsorption of congo red from aqueous solutions by chitosan hydrogel beads impregnated with cetyl trimethyl ammonium bromide

Chatterjee, Sudipta; Lee, Dae S.; Lee, Min Won; Woo, Seung Han

doi:10.1016/j.biortech.2008.12.035

Cited by 307 publications

(113 citation statements)

References 32 publications

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“…Wastewater effluents from many industries, including paper, leather, textiles, rubber, plastics, printing, cosmetics, pharmaceuticals and food, contain several kinds of synthetic dyestuffs [1]. Dye-bearing wastewaters exhibit high chemical and biochemical oxygen demands [2].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of methylene blue from aqueous solution using untreated and treated (Metroxylon spp.) waste adsorbent: equilibrium and kinetics studies

et al. 2016

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Background (Metroxylon spp.) waste is an inexpensive and abundantly available material with the characteristics of a good adsorbent for treating dye from wastewater. We studied the effectiveness of alkali and acid modification in enhancing the adsorption capacity of sago waste. The untreated and treated adsorbent was characterized by FTIR, elemental analysis and BET surface area. The capacity of each adsorbent to adsorb MB was evaluated at different pH values, adsorbent dosage and initial dye concentrations and contact time. Results According to the results obtained, alkali treatment more than doubled the sorption capacity of sago waste by increasing the porosity, surface area and number of adsorption sites. The alkali-treated material also adsorbed significantly more than many known biosorbents. The effects of the initial concentration of methylene blue, solution pH and adsorbent dosage on methylene blue removal are reported. Equilibrium data were best represented by the Langmuir isotherm model with adsorption capacities of 83.5, 212.8 and 36.82 mg/g for untreated, potassium hydroxide-treated and phosphoric acid-treated sago wastes, respectively. The kinetics of adsorption were best described by a pseudo-second-order model (R 2 = 0.999). Conclusions The alkali treatment of sago waste demonstrates the use of a low-cost agricultural waste and a simple modification process to produce an effective adsorbent for removing cationic dye from wastewater.

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Section: Introductionmentioning

confidence: 99%

Adsorption of methylene blue from aqueous solution using untreated and treated (Metroxylon spp.) waste adsorbent: equilibrium and kinetics studies

et al. 2016

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“…But, it is still widely used in several countries. Synthetic dyes, such as CR, are difficult to biodegrade due to their complex aromatic structures, which provide them physicochemical, thermal and optical stability [18]. In the present paper, attempt has been made to employ ultrasonic cavitation for the degradation of azo dye Congo red that is widely used in textile dyeing plants and the effects of dye concentration, temperature, Fe 2+ and Fenton reagent addition on the degradation rate of Congo red were also investigated.…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic cavitation induced degradation of Congo red in aqueous solutions

Meshram¹,

Tayade²,

Ingle

et al. 2010

Chem. Eng. Res. Bull.

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Ultrasonic cavitation induced degradation of Congo red in aqueous solution was investigated for a variety of operating conditions. It is found that the degradation of Congo red in aqueous solution follows pseudo-first-order reaction kinetics and the degradation rate is dependent on the initial concentration of Congo red, the temperature and pH of the aqueous medium. The effects of Fe 2+ and Fenton reagent addition on the sonochemical degradation of Congo red were also investigated. The results obtained here indicate that the degradation rate of Congo red in aqueous solution was substantially accelerated by Fe 2+ , NaCl or Fenton reagent addition.

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“…This model does not consider surface heterogeneity of the sorbent. It assumes adsorption will take place only at specific site on the adsorbent (Chatterjee et al 2009). The Langmuir equation is given as:…”

Section: Langmuir Isothermmentioning

confidence: 99%

“…K F and (1/ n) can be determined from the linear plot of ln q e versus ln C e . The essential characteristics of Langmuir isotherm can be expressed by a dimensionless constant called equilibrium parameter (R L ) that is defined by the following equation (Chatterjee et al 2009;Afkhami et al 2009):…”

Section: Freundlich Isothermmentioning

confidence: 99%

“…Many researchers used various adsorbent for removal of CR from aqueous solution such as fly ash (Dizge et al 2008), bentonite (Lian et al 2009), montmorillonite (Wang and Wang 2008), chitosan (Chatterjee et al 2009), organoattapulgite (Chen and Zhao 2009), activated carbon (Lorenc-Grabowska and Gryglewicz 2007; Namasivayam and Kavitha 2002;Purkait et al 2007), bottom ash and deoiled soya (Mittal et al 2009), Azadirachta indica leaf powder (Bhattacharyya and Sharma 2004), Trametes versicolor (Binupriya et al 2008), jute stick powder (Panda et al 2009), Aspergillus niger (Fu and Viraraghavan 2002), cattail root (Hu et al 2010a, b), anilinepropylsilica xerogel (Pavan et al 2008), perlite (Vijayakumar et al 2009), sawdust (Jain and Sikarwar 2008), rice husk ash (Chowdhury et al 2009), mesoporous hematite (a-Fe 2 O 3 ) (Yu et al 2008) and CNTs/b-FeOOH (Song et al 2012). However, some of these adsorbents do not have good adsorption capacities for anionic dyes.…”

Section: Introductionmentioning

confidence: 99%

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Ferrous oxalate, maghemite and hematite nanorods as efficient adsorbents for decontamination of Congo red dye from aqueous system

Dhal

Mishra

Hota

2014

Int. J. Environ. Sci. Technol.

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In this present study, we have synthesized ferrous oxalate nanorods by a modified co-precipitation methods. The obtained nanomaterial (ferrous oxalate nanorod) was calcined at higher temperatures to form both maghemite and hematite nanorods. The morphology, size, crystalline phases, formation and surface area of the nanorods were characterized by scanning electron microscope, transmission electron microscope, X-ray diffraction, Fourier transform infrared spectroscope, ultraviolet-visible diffuse reflectance spectroscope and Brunauer-Emmett-Teller surface area analytical techniques. The results showed that high-yield aligned nanorods with a typical diameter of 100-200 nm and length up to micrometers were formed. The obtained rod-shaped nanomaterials (i.e., ferrous oxalate, maghemite and hematite) were used as adsorbents and were applied to remove Congo red (CR) dye molecules, which was used as a model of organic pollutants in aqueous solution. The adsorption isotherms and kinetics of removal of CR were studied. It was found that the adsorption capacity of maghemite nanorod is highest among the three adsorbents and can be regarded as an effective adsorbent for removal of CR from aqueous solution.

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Enhanced adsorption of congo red from aqueous solutions by chitosan hydrogel beads impregnated with cetyl trimethyl ammonium bromide

Cited by 307 publications

References 32 publications

Adsorption of methylene blue from aqueous solution using untreated and treated (Metroxylon spp.) waste adsorbent: equilibrium and kinetics studies

Adsorption of methylene blue from aqueous solution using untreated and treated (Metroxylon spp.) waste adsorbent: equilibrium and kinetics studies

Ultrasonic cavitation induced degradation of Congo red in aqueous solutions

Ferrous oxalate, maghemite and hematite nanorods as efficient adsorbents for decontamination of Congo red dye from aqueous system

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