2019
DOI: 10.4136/ambi-agua.2414
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Activated carbon loaded with manganese and iron for glyphosate adsorption: Kinetics, isotherms and thermodynamic studies

Abstract: Granular activated carbon was loaded with 0.5% manganese and 1.0% iron (m/m) for glyphosate removal from aqueous solutions. The adsorbent material was characterized by scanning electron microscopy, dispersive energy spectrometry, nitrogen adsorption techniques and zeta potential analyses. Batch studies were performed to investigate the adsorption equilibrium, kinetics mechanisms and to obtain thermodynamic information. Glyphosate adsorption increased with the contact time and achieved equilibrium within 24 h, … Show more

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Cited by 6 publications
(13 citation statements)
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References 36 publications
(46 reference statements)
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“…The thermodynamic parameters data from the published work on glyphosate adsorption on GAC/Mn/Fe [22] were recalculated based on the dimensionless approach [23]. The effect of various solution temperatures (5 ⁰C, 15 ⁰C, 25 ⁰C, 35 ⁰C, 45 ⁰C) on the process of glyphosate adsorption onto AC/Mn/Fe is presented in Fig.…”
Section: Resultsmentioning
confidence: 99%
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“…The thermodynamic parameters data from the published work on glyphosate adsorption on GAC/Mn/Fe [22] were recalculated based on the dimensionless approach [23]. The effect of various solution temperatures (5 ⁰C, 15 ⁰C, 25 ⁰C, 35 ⁰C, 45 ⁰C) on the process of glyphosate adsorption onto AC/Mn/Fe is presented in Fig.…”
Section: Resultsmentioning
confidence: 99%
“…Thus, Kc can be obtained as dimensionless by multiplying KL by the molecular weight of adsorbate (g/mol), 1000 and then 55.5 [28]. Therefore, here we propose the reevaluation of [22] thermodynamic parameters calculation based on the equilibrium constant, Kc (dimensionless) derived from the Langmuir constants newly suggested calculation by [23]…”
Section: Historymentioning
confidence: 99%
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“…Finding and developing an efficient and cost-effective adsorbent is the main factor in an adsorption process. Removal of glyphosate by adsorption has been investigated with different natural, modified, and synthetic materials such as soils [11,12], clays [13][14][15], zeolites [16,17], biochar [18], activated carbons [19], industrial residuals [20], layered double hydroxides [21], goethite and magnetite [22] etc.…”
Section: Introductionmentioning
confidence: 99%