Removal of methylene blue from aqueous solution by adsorption onto pineapple leaf powder

Weng, Chih‐Huang; Lin, Yu-Hsiang; Tzeng, Tai-Wei

doi:10.1016/j.jhazmat.2009.04.080

Cited by 331 publications

(136 citation statements)

References 37 publications

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“…With increasing solution ionic strength, the suspension final pH also decreased. Therefore, positive ions increase at the montmorillonite surface, screening electrostatic interactions between charges and decreasing adsorption (Dogan et al, 2009;Weng et al, 2009).…”

Section: Effect Of Ionic Strengthmentioning

confidence: 99%

Investigation of adsorption of the dyestuff astrazon red violet 3rn (basic violet 16) on montmorillonite clay

Fìl

Yılmaz

Bayar

et al. 2014

Braz. J. Chem. Eng.

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-In this study, color removal by absorption from synthetically prepared wastewater was investigated using montmorillonite clay by adsorption. As dyestuff Astrazon Red Violet 3RN (Basic Violet 16) was used. Experimental parameters selected were pH, temperature, agitation speed, initial dyestuff concentration, adsorbent dosage and ionic strength. It was established that adsorption rate increased with increasing pH, temperature, dye concentration and agitation speed, but decreased with increased ionic strength and adsorbent dosage. Adsorption equilibrium data obtained by a series of experiments carried out in a water bath were employed with common isotherm equations such as Langmuir, Freundlich, Temkin, Elovich and Dubinin-Radushkevich. It was found that the Langmuir equation appears to fit the equilibrium data better than the other models. Furthermore, the fit of the kinetic data to common kinetic models such as the pseudofirst-order, second-order, Elovich and intraparticle diffusion models was tested to elucidate the adsorption mechanism. Kinetic data conformed to the pseudo-second-order model, indicating chemisorptions. In addition, the thermodynamic parameters activation energy, Ea, enthalpy ΔH*, entropy, ΔS*, and free energy change, ΔG*, were calculated. The values of the calculated parameters indicated that physical adsorption of ARV on the clay was dominant and that the adsorption process was endothermic.

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Section: Effect Of Ionic Strengthmentioning

confidence: 99%

Investigation of adsorption of the dyestuff astrazon red violet 3rn (basic violet 16) on montmorillonite clay

Fìl

Yılmaz

Bayar

et al. 2014

Braz. J. Chem. Eng.

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“…The pKa of MB is 0.04 hence, MB is completely ionized at pH greater than 0.04 and serves as a cationic species with charge positive (24). Reactive Black 5 has pKa values lower than zero due to their two sulfonate groups and another two sulfato-ethyl-sulfone groups, with negative charges even in highly acidic solutions (25).…”

Section: Effect Of Initial Phmentioning

confidence: 99%

Improvement in the Adsorption of Anionic and Cationic Dyes from Aqueous Solutions: A Comparative Study using Aluminium Pillared Clays and Activated Carbon

Aguiar

Bezerra

Siqueira

et al. 2014

Separation Science and Technology

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The aim of this work was evaluate the adsorption properties of anionic dye Reactive Black 5 (RB5) and cationic dye Methylene Blue (MB) from salted aqueous solution using natural clay, aluminum pillared clay (Al-PILC) and activated carbon. The textural properties of the materials were obtained by N 2 adsorption at 77 K and structural properties of natural and pillared clays were determined by Xray diffraction. The effect of pH, contact time, initial concentration of dye and influence of the addition of NaCl were evaluated by batch adsorption. Adsorption isotherms of Al-PILC, in different salt concentration, were compared with natural clay and activated carbon. The adsorption isotherms were well fitted by Langmuir and Langmuir-Freundlich models. The process of pillaring only improved the adsorption of the anionic dye RB5. Depending on the system adsorbent/adsorbate analyzed, the salt concentration can either help or hinder dye adsorption. We found that a special morphology formed during the process of pillaring greatly increased adsorption of the MB cationic dye in the range of high salt concentrations. This unexpected result may help in developing new pillarization strategies to treat effluents with high salt content.

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“…Protonation of these functional groups at low pH values renders a net negative charge to the biosorbent surface while deprotonation of the functional groups at high pH values render it positively charged. The pK a of MB is 0.04 (Weng et al 2009); hence, it is completely ionized at pH [0.04 and exists as cationic species. At low pH values, there exists a strong electronegative repulsion between the positively charged dye ions and the negatively charged HF surface resulting in low dye uptake capacity.…”

Section: Effect Of Phmentioning

confidence: 99%

“…Biosorption in environmental engineering is now an aesthetic attention and consideration in all nations, owing to its low initial cost, simplicity of design, ease of operation, insensitivity to toxic substances and complete removal of pollutants even from dilute solutions (Foo and Hameed 2010). A huge number of low-cost biosorbents based on natural materials or agro-industrial wastes such as rice husk (Saha 2009), tamarind fruit shell (Saha 2010), wheat shell (Bulut and Aydin 2006), orange peel (Annadurai et al 2002), banana peel (Annadurai et al 2002), pineapple leaves (Weng et al 2009), pineapple stem ), peanut hull (Gong et al 2005), garlic peel (Hameed and Ahmad 2009), rejected tea (Nasuha et al 2010), Luffa cylindrical fibers (Demir et al 2008), yellow passion fruit waste (Pavan et al 2008), neem leaf powder (Bhattacharyya and Sharma 2005) etc. have been investigated intensively by researchers worldwide for the removal of MB from aqueous solutions.…”

Section: Introductionmentioning

confidence: 99%

Biosorption of methylene blue from aqueous solutions by a waste biomaterial: hen feathers

Chowdhury

Das

2012

Appl Water Sci

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Biosorption potential of hen feathers (HFs) to remove methylene blue (MB) from aqueous solutions was investigated. Batch experiments were carried out as function of different process parameters such as pH, initial dye concentration, biosorbent dose and temperature. The optimum conditions for removal of MB were found to be pH 7.0, biosorbent dose = 1.0 g, and initial dye concentration = 50 mg L -1 . The temperature had a strong influence on the biosorption process. Experimental biosorption data were modeled by Langmuir, Freundlich and DubininRadushkevich (D-R) isotherms with the Langmuir isotherm showing the best fit at all temperatures studied. The maximum monolayer sorption capacity was determined as 134.76 mg g -1 at 303 K. According to the mean free energy values of sorption (E) calculated using the D-R isotherm model, biosorption of MB onto HFs was chemisorption. Kinetic studies showed that the biosorption of MB followed pseudo second-order kinetics. The activation energy (E a ) determined using the Arrhenius equation confirmed that the biosorption involved chemical ion-exchange. Thermodynamic studies showed that the biosorption process was spontaneous and exothermic. To conclude, HFs is a promising biosorbent for MB removal from aqueous solutions.

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Removal of methylene blue from aqueous solution by adsorption onto pineapple leaf powder

Cited by 331 publications

References 37 publications

Investigation of adsorption of the dyestuff astrazon red violet 3rn (basic violet 16) on montmorillonite clay

Investigation of adsorption of the dyestuff astrazon red violet 3rn (basic violet 16) on montmorillonite clay

Improvement in the Adsorption of Anionic and Cationic Dyes from Aqueous Solutions: A Comparative Study using Aluminium Pillared Clays and Activated Carbon

Biosorption of methylene blue from aqueous solutions by a waste biomaterial: hen feathers

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