Removal characteristics of reactive black 5 using surfactant-modified activated carbon

Choi, Hyun-Doc; Shin, Minchul; Kim, Do-Hyung; Jeon, Choong; Baek, Kitae

doi:10.1016/j.desal.2007.01.224

Cited by 66 publications

(30 citation statements)

References 11 publications

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“…Consequently, the surface charge is important for removing ionic pollutants. The surface-modification of activated carbon has been reported to increase the surface charge and enhance its adsorption capacity for ionic pollutants [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

“…Surfactants are chemicals that have molecules with a hydrophobic tail and a hydrophilic head, and have been applied to modify the surface properties of a solid surface [8][9][10][11]. In a cationic surfactant/activated carbon/water system, the surfactant adsorbs onto the surface of the activated carbon due to hydrophobic interaction, then the hydrophilic part of the surfactant tends toward the aqueous phase [11,12].…”

Section: Introductionmentioning

confidence: 99%

“…An adsorbent containing a positive charge on the surface provides an adsorption site for the Cr(VI) because it is an anionic pollutant. Activated carbon, a representative adsorbent, has been widely used to remove diverse pollutants, including organic pollutants, reactive dyes, cationic heavy metals, and anionic metals from the aqueous phase and/or from the vapor phase, because it has huge surface area and various functional groups [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Adsorption of Cr(VI) onto cationic surfactant-modified activated carbon

Choi

Jung

Cho

et al. 2009

Journal of Hazardous Materials

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110

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Adsorption of Cr(VI) onto cationic surfactant-modified activated carbon

Choi

Jung

Cho

et al. 2009

Journal of Hazardous Materials

Self Cite

110

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“…Palm trees represent 6.32% of the fruit cultivated area in Egypt. They are mainly located in the Nile Delta, Nile Valley, and South and North Sinai [13]. Palm tree branches have the characteristic of exchange sorption properties due to the presence of some functional groups such as carboxylic, hydroxyl, and lactone which have a high affinity for metal ions.…”

Section: Isrn Environmental Chemistrymentioning

confidence: 99%

Effect of Physical and Chemical Activation on the Removal of Hexavalent Chromium Ions Using Palm Tree Branches

Khedr¹,

Shouman²,

Fathy³

et al. 2014

ISRN Environmental Chemistry

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Nowadays the removal of heavy metals from wastewater is essential due to their high toxicity and impact on human health. In the present study, branches of palm trees were converted into activated carbon by chemical and physical activation. The prepared samples were used for the removal of Cr(VI) from their aqueous solution. Chemical activation was carried out using (20 and 50%) H 3 PO 4 and K 2 CO 3 , and physical activation was performed using steam. Batch adsorption experiments were carried out to examine the removal process under factors such as pH and pH pzc . The metal ion removal was pH dependent and reached maximum removal at pH 2. Experimental data were analyzed using Langmuir, Freundlich, and Flory-Huggins isotherms. The adsorption studies revealed that the removal of Cr(VI) ions was well fitted with Langmuir isotherm. The adsorption kinetics well fitted using a pseudo second-order kinetic model. Column studies revealed that the highest bed volume (60 BV) was observed for the sample activated with 50% H 3 PO 4 . The adsorption efficiency was enhanced with acid treatment (50% H 3 PO 4 ) and reduced by steam.

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“…For instance it is used in the purification of liquids and gases [7,8], in the catalysis [9,10], for the separation of mixtures [11,12], and even in the hydrogen storage [13,14]. At a cationic surfactant/activated carbon/water system, the surfactant ion or molecules can adsorb onto the surface of the activated carbon through hydrophobic interactions, and hence their hydrophilic parts are oriented toward the aqueous phase [15][16][17][18][19][20]. Poly (ethylene oxide) (PEO) is the most commercially important polyether.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Surfactant-Modified Powder Activated Carbon (SM-PAC) Reinforced Poly (Ethylene Oxide) (PEO) Composites

2016

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Poly (ethylene oxide), PEO, which was used for a wide variety of applications is a flexible, crystalline, thermoplastic, water-soluble and non-ionic polymer. The most of studies on surfactant-modified activated carbon (SM-PAC) have been generally focused on the removal of contaminants. This study aims the preparation of PEO/(SM-PAC) composites, using solution-intercalation method. Firstly activated carbon was modified with cationic surfactant, Cetyltrimethylammonium Bromide (CTAB). Then PEO/(SM-PAC) composites were prepared using solution-intercalation method, with two different (SM-PAC) contents (1.0 and 2.0 wt.%). The characterization of the composites was made by X-ray diffraction (XRD), Fourier Infrared Spectroscopy (FT-IR), thermal analysis and tensile tests. The XRD patterns revealed that 2θ positions of the broad peaks belonging to the composites significantly shift to left compared with those of virgin PEO. The SEM images of the surfactant-modified powdered activated carbon (SM-PAC)/PEO composites prepared with the two different SM-PAC contents show that there is an intensive interaction between the CTA + ions of modified activated carbon surface and the polymer chains. From the tensile tests, it was found that the unmodified powdered activated carbon dispersed into the polymer matrix made the ductile polymer more brittle. However, the tensile and yield strengths of the composite, prepared with modified powdered activated carbon, have decreased, and the strain percent value has significantly increased.

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Removal characteristics of reactive black 5 using surfactant-modified activated carbon

Cited by 66 publications

References 11 publications

Adsorption of Cr(VI) onto cationic surfactant-modified activated carbon

Adsorption of Cr(VI) onto cationic surfactant-modified activated carbon

Effect of Physical and Chemical Activation on the Removal of Hexavalent Chromium Ions Using Palm Tree Branches

Preparation and Characterization of Surfactant-Modified Powder Activated Carbon (SM-PAC) Reinforced Poly (Ethylene Oxide) (PEO) Composites

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