Adsorption studies of methylene blue onto ZnCl2-activated carbon produced from buriti shells (Mauritia flexuosa L.)

Pezoti, Osvaldo; Cazetta, André L.; Souza, Isis P.A.F.; Bedin, Karen C.; Martins, Alessandro F.; Silva, Taís L.; Almeida, Vitor C.

doi:10.1016/j.jiec.2014.02.007

Cited by 194 publications

(66 citation statements)

References 40 publications

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“…The adsorption capacity considerably increased when OBP was modified into BPAC, as expected because BPAC has a very high surface area of 1,950 m 2 g -1 , which is largely due to microporous surface area ( Table 2). In order to compare the adsorption capacity of BPAC, the adsorption capacities of some other activated carbons for MB or Orange II adsorption are included: the adsorption capacity of water hyacinth activated with H 3 PO 4 for MB is 124 mg g -1 [22]; the adsorption capacity of buriti shell activated with ZnCl 2 for MB is 288.23 mg g -1 [23]; the adsorption capacity of commercial activated carbon fiber ACFT for Orange II is 230 mg g -1 [24]. These adsorption capacities are lower than the banana peel activated carbons produced in the present study.…”

Section: Adsorption Isotherms Of Dye Contaminantsmentioning

confidence: 99%

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Adsorption of methylene blue and Orange II pollutants on activated carbon prepared from banana peel

Huang

Zou

et al. 2014

J Porous Mater

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Banana peel-activated carbon (BPAC) with a very high surface area of 1,950 m 2 g -1 was prepared and investigated for the removal of methylene blue (MB) or Orange II dye molecules from aqueous solutions. Results of adsorption experiments showed that the BPAC exhibited high adsorption capacity with cationic dyes. The maximal Orange II and MB uptakes were determined to be more than 333 and 1,263 mg g -1 , respectively. The zeta-potential analysis revealed that surface charge of BPAC is negative and hence the present activated carbon is excellent for adsorption of MB cationic dye from water. The adsorption equilibrium, kinetics, and thermodynamics of MB dye were investigated and the results indicated a monolayer chemical adsorption involving electrostatic attraction. BPAC was found to be a highly promising material for the effective removal of cationic contaminants such as MB dye from water.

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Section: Adsorption Isotherms Of Dye Contaminantsmentioning

confidence: 99%

“…The DG 0 , DH 0 , and DS 0 parameters were determined using Eqs. (21)- (23) and are listed in Table 4.…”

Section: Thermodynamic Studymentioning

confidence: 99%

Adsorption of methylene blue and Orange II pollutants on activated carbon prepared from banana peel

Huang

Zou

et al. 2014

J Porous Mater

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“…The activated carbon are used in many application such as removal or adsorb of harmful gasses like CO and HC gas. The synthesis of activated carbon can be carried out through two step process that is carbonization and activation [1]. Activation step can be performed by physical or chemical process.…”

Section: Introductionmentioning

confidence: 99%

“…Activation step can be performed by physical or chemical process. In physical process, the precursor is heated at 700-1100ºC in presence of oxidizing agents [1] while in chemical process, the precursor is reacted with chemical agent including H3PO4 [2], KOH [3] and ZnCl2 [4].…”

Section: Introductionmentioning

confidence: 99%

Preparation of activated carbon from banana peel waste for reducing air pollutant from motorcycle muffler

et al. 2018

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Abstract. The exhaust gas or emission from motor vehicle contains various pollutants and some of them are toxic and very harmful for human health. In the present work, we prepared an activated carbon to reduce the toxic pollutants (via adsorption process) from the exhaust gas of the motor vehicle (particularly motorcycle in this work). The activated carbon was prepared from local banana peel which considered as an agricultural waste without economic value. To prepare the activated carbon, banana peel was carbonized using furnace at 500ºC. Then the resulted carbon was activated using chemical activation with ZnCl2 and physical activation with either microwave (300 W) or furnace (700°C). The prepared activated carbon was then characterized using Scanning Electron Microscope (SEM) and Fourier Transform Infrared (FT-IR) analysis. The SEM result showed that the pore of microwave induced ZnCl2 activated carbon (ACM) was larger than the pore of virgin char/carbon and furnace induced ZnCl2 activataed carbon (ACF). The FT-IR spectrum of ACM showed some peaks at 3408.59 cm -1 , 1589.25 cm -1 , and 1093.63 cm -1 . They are assigned to O-H stretching, C=O stretching, and C-OH stretching. Additionally, the adsorption performance of the prepared activation carbon to reduce the pollutants concentration (i.e. CO and CH) from the exhaust gas of motor vehicle was investigated. The results showed that the activated carbon induced by microwave and ZnCl2 activation (ACM) gave the best result. The adsorption or removal efficiency of gas CO reached approximately 97.64 %vol.

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“…[11][12][13][14][15][16][17] The adsorption method has many advantageous points in that it is economical, simply, and effective treatment for purification of wastewater. [18][19][20][21][22][23] Particularly, biopolymer-based materials are interested in using as adsorbents because they are biodegradable and nontoxic. Several polysaccharide materials such as chitin, chitosan, and materials derived from plants have been used as adsorbents for removal of dyes.…”

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confidence: 99%

Adsorption Capability of Cationic Dyes (Methylene Blue and Crystal Violet) onto Poly-γ-glutamic Acid

Ogata

Nagai

Kawasaki

2017

CHEMICAL & PHARMACEUTICAL BULLETIN

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In this study, the adsorption capability of cationic dyes, which were methylene blue and crystal violet, by poly-γ-glutamic acid (PGA) in a single or binary solution system was investigated. The effect of the molecular weight of PGA, initial dye concentration, solution pH, and temperature on the adsorption of dyes was evaluated. The adsorption mechanism of dyes onto PGA was the interaction between -COOH group on the PGA surface and the polarity groups of dyes. These results indicated that PGA is useful for removal of dyes and cationic organic compounds from a single or binary solution system.

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Adsorption studies of methylene blue onto ZnCl2-activated carbon produced from buriti shells (Mauritia flexuosa L.)

Cited by 194 publications

References 40 publications

Adsorption of methylene blue and Orange II pollutants on activated carbon prepared from banana peel

Adsorption of methylene blue and Orange II pollutants on activated carbon prepared from banana peel

Preparation of activated carbon from banana peel waste for reducing air pollutant from motorcycle muffler

Adsorption Capability of Cationic Dyes (Methylene Blue and Crystal Violet) onto Poly-γ-glutamic Acid

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