A modeling analysis for the assessment of ibuprofen adsorption mechanism onto activated carbons

Iovino, Pasquale; Canzano, Silvana; Capasso, Sante; Erto, Alessandro; Musmarra, Dino

doi:10.1016/j.cej.2015.04.097

Cited by 96 publications

(35 citation statements)

References 31 publications

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“…The concentration ratio between anionic and molecular IBP species is commonly related to the Ibuprofen dissociation constant (pKa). In particular, when pH is lower than pKa, IBP is mostly in its molecular form, while when pH is higher than pKa, IBP is mainly in its anionic form (Iovino et al 2015). The anionic and molecular concentrations can be evaluated according to the Henderson-Hasselbalch equation, valid for dilute solutions (Reijenga et al 2013):…”

Section: Resultsmentioning

confidence: 99%

“…Unfortunately, nowadays the quality of many water sources and watersheds has already been compromised and remediation and treatment are required (Bortone et al 2013;Leone et al 2013; UNEP (United Nations Environment Programme) 2010; Erto et al 2014). All the toxic substances discharged from a treatment plant or a septic system can potentially end up in surface or groundwater that may ultimately be used as a source of drinking water (Iovino et al 2015;Salladini et al 2007;Salvestrini et al 2010;Teixeira et al 2016) .…”

Section: Introductionmentioning

confidence: 98%

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Degradation of Ibuprofen in Aqueous Solution with UV Light: the Effect of Reactor Volume and pH

Iovino

Chianese²,

Canzano

et al. 2016

Water Air Soil Pollut

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The presence of trace of pharmaceutical compounds (PhACs) in groundwater and in drinking and superficial waters is a major public health concern. Recently, various advanced treatment technologies have been studied to remove these kinds of pollutants; among them, combined treatments based on UV light appear to be more eco-friendly and with very interesting removal efficiencies if properly modified. In this paper, the removal of Ibuprofen (IBP) from synthetic water streams was investigated by using a lab-scale experimental device consisting of a batch reactor equipped with a lamp emitting monochromatic UV light (254 nm; 400 mJ m −2 ). The IBP initial concentration (C IBP 0 ) was 45.9 mg L −1 . Two sets of experiments were carried out; the first one was aimed at studying the IBP concentration as a function of time, at different volumes of treated solution; the second one was aimed at exploring the effect of pH on IBP degradation as a function of time.The results obtained show that the concentration of IBP decreases along with treatment time, with a negative effect of the treated volume, i.e., smaller volumes, that is lower liquid heights, are more easily degraded. Moreover, the higher the pH, the better the IBP degradation; actually when pH increases from 2.25 to 5.51 and finally to 8.25, the IBP concentration, after an hour of treatment, decreases respectively to 45, 34, and 27 % from its initial value. A reaction mechanism is suggested, which well describes the effects of volume and pH on the experimentally measured IBP degradation.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Degradation of Ibuprofen in Aqueous Solution with UV Light: the Effect of Reactor Volume and pH

Iovino

Chianese²,

Canzano

et al. 2016

Water Air Soil Pollut

View full text Add to dashboard Cite

show abstract

“…Some charged and hydrophilic contaminants, such as ibuprofen, DEET and gemfibrozil, can generally not be efficiently removed by AC 11,12 . Moreover, the adsorption capacity of AC is frequently decreased by pore-blocking and competition by natural organic matter (NOM) 6,13,14 .…”

Section: The Effect Of Incorporating Inorganic Materials Into Quaternmentioning

confidence: 99%

The effect of incorporating inorganic materials into quaternized polyacrylic polymer on its mechanical strength and adsorption behaviour for ibuprofen removal

Zhang

Shuang

et al. 2020

Sci Rep

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questionable due to the large amount of waste produced, which was roughly equal to the volume of treated water. When the regenerated resin was washed with 10 mL of deionized water, the amount of ibuprofen adsorbed onto MAP (0.20 mmol/g) decreased by approximately 20% in the first 5 adsorption-regeneration cycles. However, the reusability stabilized at an adsorbed amount of 0.19 ± 0.02 mmol/g, suggesting that MAP is a feasible, reusable material for ibuprofen removal from water.

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“…In the same sense, Iovino et al, [13]made an experimental analysis of the adsorption of ibuprofen in a granular activated carbon. The effect of ibuprofen concentration, pH and temperature on equilibrium adsorption capacity through batch testing was investigated.…”

mentioning

confidence: 98%

Kinetics and Modelling of Drug Adsorption using Activated Carbon Derived from Cocoa Cob Waste

2018

IJCTR

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Residual cocoa biomass was used for the generation of low temperature activated carbon, which was prepared and characterized by scanning electron microscopy (SEM) to determine the chemical composition of cocoa, and thus evaluate its use as an adsorbent to remove amoxicillin and ibuprofen, taking as a hypothesis that activated charcoal prepared from cocoa cob waste (shell, pulp and mucilage) is a good adsorber for removing ibuprofen and amoxicillin in aqueous solution. The removal averages were compared following an experimental design 2 2 , by applying a two-way ANOVA for each contaminant. The biomass was thermally pre-treated at low temperature and impregnated with a solution of ZnCl 2 at different concentrations (50,33.33 and 25% v ZnCl 2 /v H 2 O). The adsorption kinetics of the batch system were determined and modeled, establishing that the best conditions of amoxicillin adsorption were given at pH 6 and impregnation of 50% v v -1 , reaching a removal rate of 77.4% and that the kinetic model that best fitted the experimental removal data was Elovich with an R 2 between 0.9886 and 0.9949; while for ibuprofen taking into account the impregnation of activated carbon and the initial drug concentration (20,30 and 40 ppm), it was obtained that the higher the drug concentration, the higher the removal percentage giving a maximum result of 68% removal at 40 ppm and impregnation 50% v v -1 , while for activated carbon with impregnation 25% v v -1 and 20 ppm a removal rate of 29.15% was obtained and the experimental data of adsorption kinetics at optimum conditions according to the surface response method had a good fit to the pseudo-first order model with an R 2 between 0.779 and 0.9164.

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A modeling analysis for the assessment of ibuprofen adsorption mechanism onto activated carbons

Cited by 96 publications

References 31 publications

Degradation of Ibuprofen in Aqueous Solution with UV Light: the Effect of Reactor Volume and pH

Degradation of Ibuprofen in Aqueous Solution with UV Light: the Effect of Reactor Volume and pH

The effect of incorporating inorganic materials into quaternized polyacrylic polymer on its mechanical strength and adsorption behaviour for ibuprofen removal

Kinetics and Modelling of Drug Adsorption using Activated Carbon Derived from Cocoa Cob Waste

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