Repository of Research and Investigative Information

Repository of Research and Investigative Information

Ilam University of Medical Sciences

Optimized adsorption of 4-chlorophenol onto activated carbon derived from milk vetch utilizing response surface methodology

Mon May 20 15:12:13 2024

(2016) Optimized adsorption of 4-chlorophenol onto activated carbon derived from milk vetch utilizing response surface methodology. Desalination and Water Treatment. pp. 14213-14226. ISSN 1944-3994

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Abstract

In the present study, the adsorption of 4-chlrorophenol (4-CP) from aqueous solutions was investigated using activated carbon prepared from milk vetch. Scanning electron microscopy, Brunauer-Emmett-Teller, and Fourier transform infrared were carried out to characterize as-prepared activated carbon. The adsorption process was optimized by response surface methodology based on central composite design. Accordingly, a 4-CP removal of 89.52 was obtained with a reaction time of 49min, initial 4-CP concentration of 56mg/L, adsorbent dosage of 1g/L, and initial pH of 7. Among various operational parameters, the adsorbent dosage (F-value=139.5) produced the largest effect on 4-CP removal (), while initial pH (F-value=0.620) presented the lowest effect. The pseudo-second-order kinetic equation described the process reasonably well (R-2=0.9996). The process followed Langmuir isotherm (R-2=0.9969) with a maximum adsorption capacity of about 87mg/g. For chemical regeneration, during three-stage regeneration runs, the removal efficiency () of 4-CP decreased from 87.45 to 61.15, while, in the case of thermal regeneration, it decreased from 87.45 to 77.68, respectively. Overall, activated carbon derived from milk vetch can be applied as an efficient adsorbent for sequestering 4-CP from aqueous phase with relatively high reusability potential.

Item Type: Article
Creators:
CreatorsEmail
Noorimotlagh, Z.UNSPECIFIED
Shahriyar, S.UNSPECIFIED
Soltani, R. D. C.UNSPECIFIED
Tajik, R.UNSPECIFIED
Keywords: Adsorption Phenolic compounds Precursor Activated carbon Experimental design aqueous-solution textile dye zno nanoparticles phase adsorption methylene-blue removal isotherm sludge coal chlorophenols Engineering Water Resources
Divisions:
Page Range: pp. 14213-14226
Journal or Publication Title: Desalination and Water Treatment
Journal Index: ISI
Volume: 57
Number: 30
Identification Number: https://doi.org/10.1080/19443994.2015.1067830
ISSN: 1944-3994
Depositing User: مهندس مهدی شریفی
URI: http://eprints.medilam.ac.ir/id/eprint/456

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