Adsorption of 2-picoline and 3-Amino-2-picoline Onto Kaolin and Organo-modified Kaolin

Hashemian, Saeedeh; Parsaei, Yalda

doi:10.13005/ojc/310268

Cited by 7 publications

(6 citation statements)

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“… 53 This model states that the change in rate for analyte uptake is directly proportional to the variance in the saturation of concentration and amount of solid uptake. 58 The respective equation for this model is described in eqn (3)–(5) . ln( q e − q t ) = log q e − k 1 t where k 1 is first-order rate constant, t stands for contact time and q e reflects the binding capacity.…”

Section: Resultsmentioning

confidence: 99%

Section: Effect Of Solution Temperaturementioning

confidence: 99%

“…This theory basically describes adsorption that occurs on a homogeneous surface. 58 To further analyze the suitability of this model, the R L dimensional separation factor was calculated. 1 The equation for this model and the equation for the dimensional separation factor are described in eqn (12) and (13), respectively:…”

Section: Effect Of Solution Temperaturementioning

confidence: 99%

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Development of a new efficient and economical magnetic sorbent silicone surfactant-based activated carbon for the removal of chloro- and nitro-group phenolic compounds from contaminated water samples

et al. 2019

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Section: Resultsmentioning

confidence: 99%

Section: Effect Of Solution Temperaturementioning

confidence: 99%

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Development of a new efficient and economical magnetic sorbent silicone surfactant-based activated carbon for the removal of chloro- and nitro-group phenolic compounds from contaminated water samples

et al. 2019

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“…The expansion of the interlayer space in the clay was due to presence of adsorbed organic modifier (BTEA + ) in the interlayers of the clay. The increase could also be due to the presence of smaller particles of clay which may have been formed as a result of treatment with BTEA + [3,23], or due to the leaching of Al from the octahedral layer of the clay. Jahan et al [24] reported that the expansion of the interlayer space in the clay structure is due to the ammonium salt intercalation.…”

Section: Analysis Using X-ray Diffractometer (Xrd)mentioning

confidence: 99%

Modification of kaolinite clay using benzyltriethylammonium chloride as a surfactant: Preparation and characterization

Elgubbi

Othman

Harun

2020

IJET

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Natural kaolinite clay from Perak, Malaysia with cation exchange capacity (CEC) of 2.5 meq/100g was modified using cationic surfactant, benzyltriethylammonium chloride (BTEA-Cl), at 0.5, 1.0, 1.5 and 2.0 times the CEC. A number of techniques, namely energy dispersive X-ray (EDX) spectroscopy, X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and Brunauer-Emmett-Teller (BET) nitrogen adsorption-desorption were then used for characterization of the kaolinite and/or organo-modified kaolinite clays. The presence of alkyl groups as a result of successful intercalation of cationic surfactant within the organo-kaolinite layers of the clay was exhibited by the FTIR spectra. The SEM microphotographs exhibited good dispersion of the natural clay particles and slight agglomeration in the organo-modified clay particles. XRD patterns showed that the d001 spacing of the natural kaolinite clay increased from 7.12 Å to between 7.20 - 7.34 Å for the organo-modified clays. Following the BET nitrogen adsorption-desorption technique, all clay samples were of Type IV with narrow hysteresis loops. Surface areas of the clays showed drastic decrease from (25.34 m2/g) for natural kaolinite clay to between 5.90 - 13.11 m2/g for organo-modified clays. The results suggested that modification of natural kaolinite clay using cation surfactant had successfully occurred. The modification can therefore be further applied for alteration and improvement of the properties of natural clays for various industrial applications.

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“…Modification of kaolinite can be done in different ways, e.g. modified with phosphates [12], organic-modifications of kaolinite [16][17][18][19], thermal of natural clay minerals and their ability to incorporate a large variety of functional molecules [8,21,22]. Amino acids can be considered great modification agents as being one of the main building blocks of living organisms, ecofriendly not causing contamination when released to the environment and having affinity to heavy metal ions.…”

Section: Introductionmentioning

confidence: 99%

Adsorption study of cadmium ions on kaolinite modified by histidine and cysteine

Mladenović¹,

Ivanović²,

Kljajevic³

et al. 2019

Tehnika

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Continuous development of new technologies leads to increasing pollution of water, thus creating the need for new materials that could be used in the processes of its purification. Therefore, adsorbents prepared from agricultural waste, resins, silica gels, zeolites, clays, flying ash, aluminosilicates and other materials are being investigated as potential sorbents. Recently, research has focused on improving the adsorption capacity by modifying the material by binding or impregnating inorganic and organic molecules on the surface. In this paper, the kaolinite modification with amino acids, histidine and cysteine, was performed to improve the efficiency of adsorption of cadmium ion. Cation exchange capacity (CEC) of raw and modified kaolinite was determined by titration with methylene blue. The influence of operating parameters, such as adsorption time, pH value of the solution, initial metal concentration and temperature, on the capacity and adsorption efficiency were examined. Better agreement of experimental results with Freundlich's adsorption isotherm and the pseudo-second order kinetics model suggest that the adsorption of cadmium ions on the investigated adsorbents takes place by chemisorption mechanism. The change of Gibbs free energy has a negative value for both adsorbents, which shows that the adsorption process is spontaneous. The efficacy of cadmium removal from the aqueous solution onto histidine-modified kaolinite increased from 78.6% to 91.8%.

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Adsorption of 2-picoline and 3-Amino-2-picoline Onto Kaolin and Organo-modified Kaolin

Cited by 7 publications

References 0 publications

Development of a new efficient and economical magnetic sorbent silicone surfactant-based activated carbon for the removal of chloro- and nitro-group phenolic compounds from contaminated water samples

Development of a new efficient and economical magnetic sorbent silicone surfactant-based activated carbon for the removal of chloro- and nitro-group phenolic compounds from contaminated water samples

Modification of kaolinite clay using benzyltriethylammonium chloride as a surfactant: Preparation and characterization

Adsorption study of cadmium ions on kaolinite modified by histidine and cysteine

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