Zeolitisation of fly ash for sorption of dyes in aqueous solutions

Wang, S.B.; Boyjoo, Yashveersingh; Choueib, A.

doi:10.1016/s0167-2991(05)80335-0

Cited by 7 publications

(3 citation statements)

References 10 publications

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“…The result demonstrates that for both adsorbates, the highest adsorption was noted between pH 5 and 9, with the amount adsorbed increasing as pH increases. Similar patterns have been documented in other literature (24).…”

Section: Effect Of Medium Phsupporting

confidence: 91%

Adsorptive Removal of Volatile Organic Compounds from Industrial Effluent Using Synthesized ZnO-CA Composite Base Adsorbent

BAMİGBOYE,

KURANGA,

BENJAMİN

et al. 2024

Journal of the Turkish Chemical Society Section A: Chemistry

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In this study, a composite adsorbent consisting of ZnO nanoparticles and cellulose acetate nanoparticles was prepared. The composite was extensively characterized through Scanning electron microscopy (SEM), Transmission Electron Microscopy (TEM), Energy Dispersive X-ray Spectroscopy (EDX), and Brunnaeur Emmet Teller analysis (BET). Batch adsorption experiments were carried out to study the effects of concentration of adsorbate (10- 80 mL), dose of adsorbent (0.1 – 1 g), pH(3-13), contact or exposure time (30-180 minutes) and temperature(30 - 70℃) on the removal of benzene and toluene using the synthesized adsorbent. The pseudo-second-order model well described the kinetics of adsorption studied, and Langmuir's isotherm best described the isotherm modeling of the adsorption data. Thermodynamic studies revealed that all the adsorption processes are feasible, endothermic, and spontaneous. The prepared adsorbent is suitable for removing benzene and toluene from wastewater.

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Section: Effect Of Medium Phsupporting

confidence: 91%

Adsorptive Removal of Volatile Organic Compounds from Industrial Effluent Using Synthesized ZnO-CA Composite Base Adsorbent

BAMİGBOYE,

KURANGA,

BENJAMİN

et al. 2024

Journal of the Turkish Chemical Society Section A: Chemistry

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“…Increasing the temperature is known to increase the rate of diffusion of the adsorbate molecules across the boundary layer and in the internal pores of the solution. In addition, temperature will change the equilibrium capacity of the adsorbent for a particular adsorbate (Wang et al, 2005). As the temperature increases the percentage adsorption decreases in accordance with Le Chartelier's principle.…”

Section: Resultsmentioning

confidence: 92%

Biosorption of Fe (II) and Cd (II) ions from aqueous solution using a low cost adsorbent from orange peels

Adebayo¹,

Mohammed²,

Sokoya³

2016

Journal of Applied Sciences and Environmental Management

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ABSTRACT:The peels from orange are less expensive biomaterials with excellent adsorption capacities. Orange peels were carbonized at 450 ºC, purified, activated with orthophosphoric acid and modified with citric acid to obtain Modified and Activated carbon which were used as low cost adsorbent to adsorb Cd(II) and Fe(II) metal ions. The effects of initial metal ions concentration; pH; temperature; contact time; and adsorbents dose on the removal of metal ions were investigated. The maximum adsorption occurs at 26 ºC and decreased with increase in temperature while optimum adsorption took place at pH of 6. Both the Fe-MOP and Fe-AOP system attained equilibrium in 60 minutes but Cd-MOP & Cd-AOP attained equilibrium at 45mins. The enthalpy 0f adsorption ranged from 2.48 KJ/mol to 14.418 KJ/mol and the entropy of adsorption ranged from -3.53 KJ/mol to 41.07 KJ/mol for both adsorbents (MOP and AOP). The kinetic studies showed that the adsorption process fitted well for pseudo-second order rate expression. Both MOP and AOP has much affinity for Fe(II) uptake than Cd(II) ion and the adsorption data fitted most into Freundlich but the highest adsorption capacity of 0.895 was obtained from Temkin. The presence of hydroxyl, alkyl, ether and aldehyde groups was confirmed by Infrared while the SEM shows porous surface characteristics suitable for adsorption. © JASEM

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“…The treatment caused a significant increase of cation exchange capacity on the modified adsorbent, which subsequently adsorbed cationic dye to a much higher extent. 57,61,62 No doubt, fly ash has demonstrated its adsorption ability for dye removal in both raw and modified forms, but more information is still needed for better understanding, as the adsorption capacity depends on the properties of the adsorbent, such as porous structure, chemical structure, and surface area.…”

Section: Fly Ashmentioning

confidence: 99%