Kinetics Adsorption of Strontium(II) by Silica Xerogel from Fly Ash

Kundari, Noor Anis; Megasari, Kartini; Yusephin, C

doi:10.1088/1742-6596/1494/1/012024

Cited by 2 publications

(2 citation statements)

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“…The line equation obtained for GSHAC is y = 0.0057 x + 0.1961 with R 2 = 0.9566 while the GSHOAC is y = 0.0054 x + 0.0287 with R 2 = 0.9986. The pseudo‐second‐order adsorption kinetics model is a reaction whose speed is directly proportional to the results of the concentration of two reactants or directly proportional to the square of the concentration of one of its reactants (Aigbe & Osibote, 2020; Cortés et al., 2023; Geng et al., 2019; Kundari et al., 2020).…”

Section: Resultsmentioning

confidence: 99%

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Effect of oxidated golden shower on the adsorption of diclofenac sodium in wastewater

Arliyani,

Syaifuddin,

Ni'am

et al. 2023

Environmental Quality Mgmt

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This research aimed to modify activated carbon into oxidated activated carbon because it can effectively remove diclofenac sodium (DCF) and increase the adsorption capability. In this study of the several variations of initial concentration and contact time, those variations affected the optimal result. To determine, the removal efficiency of diclofenac sodium used Golden Shower Activated Carbon based on the contact time variation and the optimum contact time compared to Golden Shower Oxidated Activated Carbon as adsorbent on the batch method and to know the isotherm model and the kinetic model of the adsorbent on the adsorption in diclofenac sodium solution. The pHPZC for GSHAC and GSHOAC were 2.4 and 9.3. The optimum contact time for GSHAC was 225 min with the capacity (qt = 184.71 mg/g). The optimum contact time for GSHOAC was 169 min with the capacity (qt = 188.34 mg/g). The Isotherm model, kinetics model, and the physical characterization of the biosorbent were thoroughly investigated. The isotherm model chosen in the adsorption process for GSHAC and GSHOAC was the Langmuir model (R2 = 0.985 and R2 = 0.973). The pseudo‐second‐order for GSHAC and GSHOAC was confirmed to be a kinetic pseudo‐second‐order model of the adsorption with R2 values of 0.9566 and 0.9986. The model represents that the reaction from the adsorbent to the solution was double the initial concentration. Based on SEM analysis after the adsorption process, it was found that flakes of adsorbent before adsorption had many layers of pores, causing an irregular texture after adsorption showed that GSHAC and GSHOAC were fragmented and had many layers of pores that were closed and tight because it adsorbed DCF.

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Section: Resultsmentioning

confidence: 99%

“…pseudo-second-order adsorption kinetics model is a reaction whose speed is directly proportional to the results of the concentration of two reactants or directly proportional to the square of the concentration of one of its reactants (Aigbe & Osibote, 2020;Cortés et al, 2023;Geng et al, 2019;Kundari et al, 2020).…”

Section: Isotherms Modelmentioning

confidence: 99%