Congo red adsorption from aqueous solutions by using chitosan hydrogel beads impregnated with nonionic or anionic surfactant

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

doi:10.1016/j.biortech.2009.03.023

Cited by 163 publications

(59 citation statements)

References 34 publications

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“…Indeed, adsorbents produced by intercalation by Cationic surfactants improved the adsorption capacity of the adsorbents. This is consistent with the results of other researchers [25][26][27][28]. According Figure 3, the surfactant is a modified adsorption capacity slightly higher compared to the surfactant that can be attributed to the higher value of CEC clay.…”

Section: Initial Considerationssupporting

confidence: 92%

Study of the Adsorption of Bright Green by a Natural Clay and Modified

Ltifi¹,

Ayari²,

Db³

et al. 2016

J Material Sci Eng

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The adsorption of Bright Green (BG), a cationic dye, was studied by clay treatment experiments by modification with an aqueous solution of a cationic surfactant. Hexadecyltrimethylammonium bromide (HDTMA) and Cetylpyridinium chloride (CPC) were used for the modification of the clay. Clay modified HDTMA showed the greatest adsorption capacity compared to the other adsorbents studied. The adsorption of HDTMA on BG depended on the adsorbent dose, the pH of the solution, the contact time and the initial dye concentration studied.The adsorption data to correspond to the HDTMA experiments have been better described by the Langmuir isotherm model. The isothermal adsorption capacity of BG on HDTMA modified clay was found to be 45.5 mg/g (for an initial BG concentration of 50 mg/L), which is significantly higher than that of other adsorbents. The kinetics of adsorption of BG on clay modified by HDTMA has been described more precisely by the pseudo-second order kinetics model. The adsorbent was characterized by analysis of the Brunauer-Emmett-Teller surface (BET), Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). The BG adsorption mechanism on the surfactant-modified clay may comprise a hydrophobic interaction or van der Waals interaction or a combination of the two.

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Section: Initial Considerationssupporting

confidence: 92%

Study of the Adsorption of Bright Green by a Natural Clay and Modified

Ltifi¹,

Ayari²,

Db³

et al. 2016

J Material Sci Eng

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show abstract

“…More than 10×10 5 commercially available dyes with over 7×10 5 tons of dyestuff are produced per year (Pearce 2003), and about 10 to 15% of the used dye is lost in the effluent of textile units (Dod et al 2012;Husain 2006). Many dyes have toxic, carcinogenic, mutagenic, and teratogenic effects on aquatic life and also on humans (Bhattacharyya and Sharma 2005;Chatterjee et al 2009). Additionally, dyes persist in water systems, causing aesthetic and environmental problems that affect water transparency and gas solubility (Papinutti and Forchiassin 2011).…”

Section: Introductionmentioning

confidence: 99%

Adsorptive Removal of Methylene Blue from Aqueous Solution by Spent Mushroom Substrate: Equilibrium, Kinetics, and Thermodynamics

Yan¹,

Lijuan²

2013

BioResources

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Spent mushroom substrate (SMS), a renewable bio-waste from the mushroom-growing industry, was used as an adsorbent to remove methylene blue (MB) from aqueous solution. SMS was characterized using scanning electron microscopy (SEM) and Fourier-transform infrared spectroscopy (FTIR). Adsorption experiments with the SMS adsorbent were performed based on various parameters, such as adsorbent dose, initial MB dye concentration, initial pH, contact time, and temperature. The Langmuir, Freundlich, and Temkin isotherm models were employed to interpret the adsorption behavior. The results indicated that the equilibrium data were perfectly represented by the Temkin isotherm. The maximum adsorption capacity of SMS reached 63.5 mg g -1 at 303 K. The kinetics studies indicated that the pseudo-second-order model best described the adsorption of MB on SMS. The activation energy of the adsorption was 5.64 kJ mol -1 . Thermodynamic parameters suggested that the adsorption was an exothermic and spontaneous physical process. The results imply that SMS is a potentially low-cost adsorbent for treating wastewater containing cationic dyes.

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“…The common Rhodamine B removal processes include: physical-chemical, chemical, and biological methods, such as coagulant sedimentation (Sadri Moghaddam, Alavi Moghaddam, & Arami, 2010), membrane separation (Sachdeva & Kumar, 2009), adsorption(D. Karadag, Turan, Akgul, Tok, & Faki, 2007), chemical oxidation (El-Desoky, Ghoneim, El-Sheikh, & Zidan, 2010), ion exchange method (Labanda, Sabaté, & Llorens, 2009), and aerobe and anaerobe degradation methods (Li, Zhang, Lin, Han, & Lei, 2010). Among these, the adsorption method is regarded to be an effective method for the removal of dyes from water (Chatterjee, Lee, Lee, & Woo, 2009).…”

Section: Introductionmentioning

confidence: 99%

The Adsorption of Rhodamine B in Water by Modified Zeolites

Wang¹,

Li²,

Pan³

et al. 2016

MAS

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In this study, modified zeolites were prepared through the modification of raw zeolites, using hydrochloric acid (HCl) and cetyl trimethyl ammonium bromide (CTAB), whose properties were then characterized by a Zeta Potential Meter and an X-ray diffractometer. Also, the adsorption mechanisms were investigated in depth. The experimental results indicated that, in terms of the adsorption capacity of Rhodamine B in water, the modified zeolites were more favorable than the raw zeolites. As the dosage of adsorbent increased, the removal percentage of Rhodamine B in the water increased, while the unit adsorption capacity decreased. The pH value of the solution, and reaction temperature imposed little effects on the adsorption of the Rhodamine B. In accordance with the adsorption thermodynamic results, Langmuir and Freundlich isothermal adsorption models were able to accurately describe the adsorption of Rhodamine B in water by the modified zeolites. The fitting results had a higher correlation when using a Freundlich isothermal model. At 303 K, the static saturated adsorption capacity was 4.41 mg/g. The kinetic results demonstrated that the adsorption of Rhodamine B in water using modified zeolites fit well with the pseudo-second-order kinetic model.

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Congo red adsorption from aqueous solutions by using chitosan hydrogel beads impregnated with nonionic or anionic surfactant

Cited by 163 publications

References 34 publications

Study of the Adsorption of Bright Green by a Natural Clay and Modified

Study of the Adsorption of Bright Green by a Natural Clay and Modified

Adsorptive Removal of Methylene Blue from Aqueous Solution by Spent Mushroom Substrate: Equilibrium, Kinetics, and Thermodynamics

The Adsorption of Rhodamine B in Water by Modified Zeolites

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