Removal of antibiotic from aqueous solution using synthesized TiO2 nanoparticles: characteristics and mechanisms

Dao, Thi Huong; Tran, Thi Thuy; Nguyen, Van Ri; Pham, Thi Ha Giang; Vu, Cuong Manh; Pham, Tien Duc

doi:10.1007/s12665-018-7550-z

Cited by 47 publications

(18 citation statements)

References 67 publications

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“…Once the traditional water and wastewater treatment technologies proved ineffective to successfully remove several compounds, there is an ongoing discussion about alternative treatment methods that will be able to eliminate them. Several works on the removal of antibiotics from aqueous solutions have been recently published [12,13]. The removal procedure of pharmaceuticals is already well-reported and is usually based on photocatalytic degradation [14,15,16], ozonation [17,18] or adsorption onto various materials such as activated carbon or carrageenans [19,20].…”

Section: Introductionmentioning

confidence: 99%

Chitosan Grafted Adsorbents for Diclofenac Pharmaceutical Compound Removal from Single-Component Aqueous Solutions and Mixtures

et al. 2019

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The main purpose of this study was to investigate the synthesis of some cross-linked carboxyl-grafted chitosan derivatives to be used as selective adsorbents for diclofenac (DCF) pharmaceutical compounds from aqueous mixtures. Four different materials were synthesized using succinic anhydride (CsSUC), maleic anhydride (CsMAL), itaconic acid (CsITA), and trans-aconitic acid (CsTACON) as grafting agents. After synthesis, scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD) were performed before and after DCF adsorption. In addition, a complete adsorption evaluation was carried out for all materials studying some important parameters. The optimum pH was 4; the amino groups of DCF can be protonated at pH = 4 (–NH+), so this groups can easily attract the clear negatively carboxyl moieties (–COO−) of the chitosan adsorbents. The Qm for CsTACON was higher than those of the other materials, at all temperatures studied. By altering the temperature from 25 to 35 °C, an increase (16%) of Qm (from 84.56 to 98.34 mg g−1) was noted, while similar behavior was revealed after a further increase of temperature from 35 to 45 °C, improving by 5% (from 98.34 to 102.75 mg g−1). All isotherms were fitted to Langmuir, Freundlich, and Langmuir-Freundlich (L-F) models). In addition, a kinetic model was proposed taking into account not only the interactions but also the diffusivity of the molecule (DCF) into the polymeric network. The behavior of the prepared chitosan materials in simultaneously removing other compounds (synergetic or antagonistic) was also evaluated by experiments performed in mixtures. DCF presented the highest removal from the mixture in the order: CsTACON (92.8%) > CsITA (89.5%) > CsSUC (80.9%) > CsMAL (66.2%) compared to other pharmaceutical compounds (salicylic acid, ibuprofen and ketoprofen). Desorption was achieved by using different eluants (either water or organic). The highest desorption ability was found for acetone (100% for CsTACON, CsSUC, CsMAL and 77% for CsITA) for all materials.

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Section: Introductionmentioning

confidence: 99%

Chitosan Grafted Adsorbents for Diclofenac Pharmaceutical Compound Removal from Single-Component Aqueous Solutions and Mixtures

et al. 2019

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“…Several methods are conventionally used in water treatment facilities for the treatment of wastewater containing the excess level of dyes, including oxidation (photochemical and electrochemical) [10,11], Fenton's process [12], membrane separation [13], ion-exchange [14], coagulation [15] and biodegradation [16]. These methodologies are nonetheless found to suffer from several shortcomings such as generation of sludge, applicability to a narrow range of dyes, production of toxic intermediates and low cost-efficiency [17,18]. Among these technologies, the adsorptive removal of dyes has attracted widespread attention owing to its environmental benignity, great selectivity, easy operation and cost-effectiveness [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Removal of Patent Blue (V) Dye Using Indian Bael Shell Biochar: Characterization, Application and Kinetic Studies

et al. 2018

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The prospective utilization of bael shell (Aegle marmelos) as an agro-waste for the production of biochar was investigated along with its characterization and application for the abatement of hazardous aqueous Patent Blue (PB) dye solution. The sorptive removal of PB on bael shell biochar (BSB) was investigated under the following operational conditions: (pH, 2.7–10.4; biochar dosage, 2–12 g/L; and contact time, 0–60 min). The removal efficiency of PB by BSB in a batch adsorption experiment was 74% (pH 2.7 and 30 ± 5 °C). In addition, a clear relationship between the adsorption and pH of the solution was noticed and the proposed material recorded a maximum sorption capacity of 3.7 mg/g at a pH of 2.7. The adsorption of PB onto BSB was best explained by the pseudo-second order kinetic model (R2 = 0.972), thereby asserting the predominant role of chemisorption. The active role of multiple surface-active functionalities present on BSB during PB sorption was elucidated with the help of Freundlich isotherm (R2 = 0.968). Further, an adsorption mechanism was proposed by utilizing Fourier transform infrared spectroscopy (FTIR).

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“…The enhancement of water quality is necessary in modem life which is based on applied science and technologies such as chemical [12], biologic [13], physical properties or combined together [14]. Many studies report the different techniques for antibiotic removal such as membrane processes, Fenton oxidation [15], photocatalytic degradation [16] and adsorption, etc. It has been found that adsorption is known as one of most effective methods for organic pollutants removal.…”

Section: Introductionmentioning

confidence: 99%

Adsorption Behavior of Polyelectrolyte onto Alumina and Application in Ciprofloxacin Removal

Dao

Nguyen

et al. 2020

Polymers

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This study aims to investigate the adsorption behavior of a strong polyelectrolyte poly(styrenesulfonate) (PSS) onto alumina particles. Adsorption of PSS onto positively charged alumina surface increased with increasing ionic strength, indicating that non-electrostatic and electrostatic interaction controlled the adsorption. The removal of an emerging antibiotic ciprofloxacin (CFX) from water environment using PSS-modified alumina (PMA) was also studied. The removal of CFX using PMA was much higher than that using alumina particles without PSS modification in all pH ranges of 2–11. The removal of CFX reached 98% under the optimum conditions of pH 6, contact time of 120 min, adsorbent dosage of five milligrams per milliliter and ionic strength 104-M NaCl. The adsorption isotherms of CFX at different salt concentrations fit well with a two-step adsorption model, while the adsorption kinetic fit well with a pseudo-second-order model with a good correlation coefficient (R2 > 0.9969). The CFX-removal from a hospital wastewater using PMA was more than 75%. Our study demonstrates that adsorption of PSS onto alumina to modify the particle surface is important to form a novel adsorbent PMA for CFX-removal from water environments.

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Removal of antibiotic from aqueous solution using synthesized TiO2 nanoparticles: characteristics and mechanisms

Cited by 47 publications

References 67 publications

Chitosan Grafted Adsorbents for Diclofenac Pharmaceutical Compound Removal from Single-Component Aqueous Solutions and Mixtures

Chitosan Grafted Adsorbents for Diclofenac Pharmaceutical Compound Removal from Single-Component Aqueous Solutions and Mixtures

Removal of Patent Blue (V) Dye Using Indian Bael Shell Biochar: Characterization, Application and Kinetic Studies

Adsorption Behavior of Polyelectrolyte onto Alumina and Application in Ciprofloxacin Removal

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