Enhanced decolorization of reactive black 5 dye by active carbon sorbent-immobilized-cationic surfactant (AC-CS)

Nabil, Gehan M.; El‐Mallah, Nabila M.; Mahmoud, Mohamed E.

doi:10.1016/j.jiec.2013.06.034

Cited by 92 publications

(28 citation statements)

References 39 publications

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“…15, greater As(V) removal (approximately 16%) was observed for DPF compared to the OP and DPF-OP adsorbents (6-8%) when the temperature of the aqueous solution was increased from 30 to 50ºC, which shows that temperature has a driving effect on the adsorption process. The adsorption capacity of DPF decreased from 36 to 28 mg/g after increasing the temperature from 30 to 50ºC, which suggests an exothermic chemical interaction between the adsorbent and the adsorbate [76]. However, both OP and DPF-OP displayed an exothermic adsorption process when temperatures increased from 30 to 40ºC, whereas an endothermic process was observed for temperatures ranging between 40-50ºC (Fig.…”

Section: Effects Of Temperature and Thermodynamicsmentioning

confidence: 92%

Absorption Behaviours of Copper, Lead, and Arsenic in Aqueous Solution Using Date Palm Fibres and Orange Peel: Kinetics and Thermodynamics

Amin¹,

Alazba²,

Amin³

2017

Pol. J. Environ. Stud.

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In this study, date palm fibres and orange peel in both individual and hybrid forms were studied for the removal of copper, lead, and arsenic. Equilibrium was achieved after 150 minutes, and the highest and the lowest removal efficiencies were for Cu +2 and As(V), respectively. A slightly higher removal efficiency of metal ions using orange peel was observed, which could be due to the greater number of functional groups on the chemically pre-treated adsorbent. The highest removal was observed at pH 6, and the adsorption data exhibited a linear increase in metal removal capacity with increasing adsorbent concentrations from 0.1 to 2 g/L. A significantly higher removal efficiency was observed for a 45 µm particle size compared to larger particle sizes. Additionally, a 30-40% decrease in removal efficiencies was observed for all three heavy metal ions when using the date palm fibres or the hybrid adsorbent when the initial metal concentrations were increased from 20 to 80 mg/L. The Freundlich model agreed with the experimental data slightly better than the Langmuir model for both date palm fibres and the hybrid adsorbent. A pseudo second-order kinetic model better described the kinetic behaviour of As(V) adsorption on the investigated adsorbents. Date palm fibres exhibited exothermic adsorption, while both orange peel and the hybrid adsorbent displayed exothermic and endothermic reactions. Increased randomness at the solid-liquid interface was observed for all adsorbents, and the Gibbs free energy change values were negative, confirming the spontaneous nature of adsorption, which proceeded in the forward direction.

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Section: Effects Of Temperature and Thermodynamicsmentioning

confidence: 92%

Absorption Behaviours of Copper, Lead, and Arsenic in Aqueous Solution Using Date Palm Fibres and Orange Peel: Kinetics and Thermodynamics

Amin¹,

Alazba²,

Amin³

2017

Pol. J. Environ. Stud.

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show abstract

“…As they lead to an increase in ionic strength, the addition of additives can either accelerate or retard dye adsorption processes [30]. A high concentration of salt, especially NaCl, is used to lower the dye solubility in order to enhance the exhaustion of dye bath [31]. Thus, we can consider the ionic strength as another important parameter in the dye adsorption process.…”

Section: Effect Of the Sodium Concentrationmentioning

confidence: 99%

Removal of hydrolyzed Reactive Black 5 from aqueous solution using a polyethylenimine–polyvinyl chloride composite fiber

Kim

Hwang

Kang

et al. 2015

Chemical Engineering Journal

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“…At pH 4, the maximum uptake values by CS and CS/HDA/APTES beads were found to be 93.4% and 99.2%, respectively. These results could be due to the protonation of NH 2 further increase in the pH of the dye solution to pH 10; the maximum RB4 removal by CS and CS/HDA/APTES beads decreased to 79.6% and 85.3%, respectively. This observation could be due to the deprotonation of NH 2 resulting in a decrease in the dye adsorption efficiency [16].…”

Section: Effect Of Phmentioning

confidence: 97%

“…However, they suffer from some drawbacks such as high salt content of the wastewater, low adsorption ability, non-biodegradability, high water solubility and low degree of fixation on the surfaces which result in the generation of high contaminated wastewater [2]. The presence of reactive dyes in the environmental could threat the ecosystem due to their toxicity effects and sunlight transmission reduction in aquatic environment [3].…”

Section: Introductionmentioning

confidence: 99%

Enhancing reactive blue 4 adsorption through chemical modification of chitosan with hexadecylamine and 3-aminopropyl triethoxysilane

Vakili

Rafatullah

Ibrahim

et al. 2017

Journal of Water Process Engineering

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Enhanced decolorization of reactive black 5 dye by active carbon sorbent-immobilized-cationic surfactant (AC-CS)

Cited by 92 publications

References 39 publications

Absorption Behaviours of Copper, Lead, and Arsenic in Aqueous Solution Using Date Palm Fibres and Orange Peel: Kinetics and Thermodynamics

Absorption Behaviours of Copper, Lead, and Arsenic in Aqueous Solution Using Date Palm Fibres and Orange Peel: Kinetics and Thermodynamics

Removal of hydrolyzed Reactive Black 5 from aqueous solution using a polyethylenimine–polyvinyl chloride composite fiber

Enhancing reactive blue 4 adsorption through chemical modification of chitosan with hexadecylamine and 3-aminopropyl triethoxysilane

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