Sorptive removal of ibuprofen from water using selected soil minerals and activated carbon

Behera, Shishir Kumar; Oh, Seok‐Young; Park, Hung‐Suck

doi:10.1007/s13762-011-0020-8

Cited by 83 publications

(46 citation statements)

References 46 publications

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“…To evaluate the effect of natural organic matter (NOM) on IBP degradation, humic acid was selected as a model of NOM since NOM is comprised of ∼70% humic acid [23]. As depicted in Fig.…”

Section: Discussionmentioning

confidence: 99%

Optimizing Parameters on Nanophotocatalytic Degradation of Ibuprofen Using UVC/ZnO Processes by Response Surface Methodology

Rastkari¹,

Eslami²,

Nasseri³

et al. 2017

Pol. J. Environ. Stud.

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Due to the increasing importance of low-concentrated pollution of water resources, the photocatalytic decomposition of ibuprofen down to low ppm concentrations over zinc oxide catalyst has been studied. The aim of this work was to evaluate the degradation of the non-steroidal anti-inflammatory drug (NSAID) ibuprofen (IBP) using heterogeneous ZnO photocatalyst under UV-C irradiation. The photo catalyst was characterized by field emission scanning electron microscope (FE-SEM) and x-ray diffraction (XRD). The photocatalytic activity of ZnO nanoparticle was evaluated in a cylindrical glass reactor under VU-C irradiation light. Central composite design (CCD) and response surface methodology (RSM) were employed for modeling and optimizing the IBP degradation under different variables such as initial pH, ZnO loading, humic acid concentration, initial IBP concentration, and reaction time. The results of our experiments showed that the reaction time had its highest positive effect on IBP degradation. The correlation coefficient (R 2 ) value of 0.856 indicated a good agreement between the experimental results and the model predictions. Optimization results showed that the maximum IBP degradation was attained at optimum conditions of pH 6.7, catalyst loading 583 mg/L, initial IBP concentration 1.5 mg/L, humic acid concentration 54 mg/L, and reaction time of 95 min. Under these conditions we achieved maximum IBP removal efficiency of 82.97%. In conclusion, ZnO was found to be an effective photo catalyst and a promising alternative for producing free OH radicals for degradation of ibuprofen as an emerging pollutant in water resources.

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“…To evaluate the effect of natural organic matter (NOM) on IBP degradation, humic acid was selected as a model of NOM since NOM is comprised of ∼70% humic acid [23]. As depicted in Fig.…”

Section: Discussionmentioning

confidence: 99%

Optimizing Parameters on Nanophotocatalytic Degradation of Ibuprofen Using UVC/ZnO Processes by Response Surface Methodology

Rastkari¹,

Eslami²,

Nasseri³

et al. 2017

Pol. J. Environ. Stud.

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“…The reason of this has been explained based on the reducing all the electrostatic interactions, both attractive and repulsive by increasing the ionic strength (i.e. increasing the salt concentration) of the solution (Behera et al 2012). …”

Section: Effect Of Added Salts Concentrationsmentioning

confidence: 99%

Hexamine adsorption study on activated carbon from aqueous solutions for application in treatment of hexamine industrial wastewater

Taghdiri

Zamani

2012

Int. J. Environ. Sci. Technol.

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The adsorption of hexamine onto powdered activated carbon from aqueous solutions was studied in a fixed bed system. Langmuir, Freundlich, Redlich-Peterson and Toth isotherm models were used to fit the experimental data and isotherm parameters were determined. The results revealed that the adsorption isotherm models fitted the data in the order of Langmuir [ Toth [ Redlich-Peterson [ Freundlich. Lagergren pseudo-first order kinetic model was found to correlate well with the experimental data. The effects of solution pH, temperature, initial hexamine concentration and added salts concentration on the adsorption capacity and the rate of adsorption were studied. The results indicate that the rate of adsorption increases and then decreases as temperature of the hexamine solution increases, however, the adsorption capacity decreases. The addition of low concentration of salt significantly increases the adsorption capacity of activated carbon. The results showed that the activated carbon has potential for the adsorption of hexamine from industrial hexamine wastewater.

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“…The solution pH is a parameter of great interest in sorption processes in aqueous phase as it determines the charge of both the sorbent and the sorbate and thereby governs the sorbent-sorbate electrostatic interactions (Behera et al 2012).Change of the adsorption capacity of DBP on PLAC with pH was shown in Fig. 5.…”

Section: Effect Of Solution Phmentioning

confidence: 98%

Efficient adsorption of dibutyl phthalate from aqueous solution by activated carbon developed from phoenix leaves

Wang

2014

Int. J. Environ. Sci. Technol.

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The adsorption of dibutyl phthalate (DBP) from aqueous solution using phoenix leaves activated carbon (PLAC) by chemical activation with phosphate was investigated. After scanning electron microscopy, energy dispersive X-ray spectrometry, Brunauer-Emmett-Teller (BET) and infrared spectrum characterization of PLAC, the influences of solution pH, contact time, initial DBP concentration and temperature on the adsorption rate were investigated. The isotherm, kinetic and thermodynamic parameters were explored to describe the experimental data. The PLAC has a heterogeneous distribution of grain and a well-developed porous structure. The main elements of PLAC are 24.26 % carbon, 70.65 % oxygen and 3.75 % phosphor. The BET surface area of the sample is 593.52 m 2 /g with the average pore diameter of 6.31 nm. The single-point total pore volume was found to be 0.52 cm 3 /g. The infrared spectrum showed the complexity of the material. The maximum DBP adsorption rate was 97.36 %, and the maximum adsorption capacity was 48.68 mg/g at pH 13. The monolayer sorption capacity of the biosorbent for DBP was found as 133.33 mg/g with the Langmuir isotherm. The equilibrium data fitted with Freundlich isotherm better than Langmuir, Dubinin-Radushkevich and Temkin isotherm. The kinetic data were best described by the pseudo-second-order model better than pseudo-first-order kinetic, intraparticle diffusion, and Elovich model. The thermodynamic studies indicated that the sorption process spontaneous, thermodynamically favorable and endothermic. The PLAC can be an alternative material for treatment of DBP wastewater.

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Sorptive removal of ibuprofen from water using selected soil minerals and activated carbon

Cited by 83 publications

References 46 publications

Optimizing Parameters on Nanophotocatalytic Degradation of Ibuprofen Using UVC/ZnO Processes by Response Surface Methodology

Optimizing Parameters on Nanophotocatalytic Degradation of Ibuprofen Using UVC/ZnO Processes by Response Surface Methodology

Hexamine adsorption study on activated carbon from aqueous solutions for application in treatment of hexamine industrial wastewater

Efficient adsorption of dibutyl phthalate from aqueous solution by activated carbon developed from phoenix leaves

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