Ciprofloxacin removal from aqueous solutions by ozonation with calcium peroxide

Javid, Neda; Honarmandrad, Zhila; Malakootian, Mohammad

doi:10.5004/dwt.2020.24855

Cited by 61 publications

(15 citation statements)

References 54 publications

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“…Antibiotics are widely introduced into water and the environment through domestic wastewater, pharmaceutical wastewater, hospital wastewater, and veterinary clinics (1)(2)(3). Metronidazole (C 6 H 9 N 3 O 3 ) belongs to nitroimidazole antibiotics.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characteristics, and photocatalytic activity of zinc oxide nanoparticles stabilized on the stone surface for degradation of metronidazole from aqueous solution

Alibeigi¹,

Javid²,

Gharaghani³

et al. 2021

Environ Health Eng Manag

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Background: The presence of antibiotics such as metronidazole in wastewater even at low concentrations requires searching for a suitable process such as advanced oxidation process (AOP) to reduce the level of pollutants to a standard level in water. Methods: In this study, zinc oxide (ZnO) nanoparticles were synthesized by thermal method using zinc sulfate (ZnSO4 ) as a precursor, then, stabilized on stone and was used as a catalyst, in order to degrade metronidazole by photocalytic process. Effective factors on the removal efficiency of metronidazole including the initial metronidazole concentration, contact time, pH, and 0.9 gL-1 ZnO stabilized on the stone surface were investigated. Results: The X-ray diffraction (XRD) studies showed that the synthesized nanomaterials have hexagonal Wurtzite structure. Also, scanning electron microscopy (SEM) analysis revealed that the average crystalline size of the synthesized ZnO particles was in the range of 1.9-3.2 nm. The spectra represented a sharp absorption edge at 390 nm for ZnO nanoparticles corresponding to band gap of 3.168 eV. The BET-BJH specific surface area of the synthesized ZnO nanoparticles was 25.504 m2 /g. The EDS spectrum of ZnO nanoparticles showed four peaks, which were identified as Zn and O. The maximum removal efficiency was 98.36% for the synthetic solution under a specific condition (pH = 11, reaction time = 90 minutes, ZnO concentration = 0.9 gL-1, and the initial concentration of metronidazole = 10 mgL-1). The photocatalytic degradation was found to follow pseudo-first-order degradation kinetics. Conclusion: Therefore, the ZnO nanoparticles synthesized by thermal decomposition are suitable and effective photocatalytic materials for degradation of pharmaceutical contaminants.

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Section: Introductionmentioning

confidence: 99%

Synthesis, characteristics, and photocatalytic activity of zinc oxide nanoparticles stabilized on the stone surface for degradation of metronidazole from aqueous solution

Alibeigi¹,

Javid²,

Gharaghani³

et al. 2021

Environ Health Eng Manag

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“…Since the physical separation methods are energy‐intensive and the chemical methods are largely dependent on the use of appropriate substance(s), the adsorption method represents a very useful method for separation 7 . Due to low capital investment, simple design and convenient operation, the adsorption process is an appropriate method to eliminate organic and inorganic compounds 8‐10 …”

Section: Introductionmentioning

confidence: 99%

“…7 Due to low capital investment, simple design and convenient operation, the adsorption process is an appropriate method to eliminate organic and inorganic compounds. [8][9][10] Many researchers have used various adsorbents for wastewater treatment, of which one may refer to activated carbon (AC), 11,12 Umbonium vestiarium snail shell, 13 bentonite-magnetite 14 and CaO/Fe 3 O 4 /SDS nanocomposite, 8 and so forth. Recently, bioadsorbents have been increasingly regarded for wastewater treatment thanks to their environmental compatibility and low cost.…”

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confidence: 99%

Removal of gas condensate from industrial wastewater using low‐cost adsorbents: Optimization by Box–Behnken design method

Fouladi

Esmaeili

Tamjidi

et al. 2021

Env Prog and Sustain Energy

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In this study, three effective adsorbents such as Padina sanctae cruces algae (PSC), activated carbon (AC), and bentonite clay were used to remove gas condensates from industrial wastewater generated in the fourth refinery of South Pars Gas Complex in Iran. Physical and surface properties of the adsorbents were characterized using Brunauer–Emmett–Teller (BET), field‐emission scanning electron microscope, Fourier transform‐infrared spectroscopy, and energy dispersive X‐ray spectroscopy (EDAX) analyses. Also, droplet size distribution analysis was used to determine the size distribution of gas condensate droplets in the emulsion and to evaluate the emulsion stability. According to the BET analysis, the specific surface area of AC, PSC, and bentonite were obtained as 900.93, 0.0463, and 40.70 m2/g, respectively. To check the effect of different parameters on the removal efficiency of gas condensates, the Box–Behnken design method was used. Moreover, the optimal conditions for the removal of gas condensates included pH 9, temperature of 65°C, contact time of 120 min, and an adsorbent dosage of 5 g/L. Under such optimal conditions, the adsorption efficiencies using AC, PSC, and bentonite were obtained as 98.90%, 96.35%, and 97.24%, respectively. Furthermore, the maximum adsorption capacities of 1250, 54.95, and 99.01 mg/g were achieved using AC, PSC, and bentonite, respectively, in which AC showed the highest adsorption capacity ever achieved for the removal of gas condensate from wastewater. Besides, the thermodynamic study indicated that the sorption process was exothermic and spontaneous.

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“…Once those dyes are released, they cause significant damage to human health such as the mutagenic and carcinogenic effects [5][6][7][8] and changes in the aquatic environment [9] when they are discharged into the environment without or with insufficient treatment [10][11][12]. To reduce the impact of this pollution, several techniques have been developed and tested in the treatment of effluents loaded with dyes, namely, biological process [13], coagulation/flocculation [14], photodegradation [15][16][17][18], ozonation [19,20], oxidation [21,22], and membrane separation [23][24][25]. e adsorption technique is considered as one of the most effective methods that has been successfully adopted for removing dyes from wastewater [26][27][28][29][30][31] due to its low cost and availability.…”

Section: Introductionmentioning

confidence: 99%

Valorization of Date Pits as an Effective Biosorbent for Remazol Brilliant Blue Adsorption from Aqueous Solution

Thiam

Tanji

Assila

et al. 2020

Journal of Chemistry

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In this work, the adsorption of Remazol Brilliant Blue (RBB) over raw date pits (RDPs) as an inexpensive adsorbent has been examined. In addition, all parameters such as the adsorbent mass, solution pH, RDP particle size, RBB initial concentration, and temperature on the adsorption of RBB influencing the adsorption procedure were studied to provide fundamental information of the adsorption equilibrium. The characterization of RDP material is investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier-transform infrared spectroscopy (FTIR). Based on the calculation, the kinetic rate of the adsorption was well modeled by pseudo-second-order and Langmuir isotherm. Surface functional groups of RDP have substantially been influenced by the adsorption characteristics of RBB. The capacity of the adsorption has achieved 105 mg/g and a removal efficiency of 90.4% at 1.5 g/L RDP mass, 40 mg/L initial dye concentration, pH 2, temperature of 328 K, 40 µm particle size, and contact time of 50 min. The capacity of the adsorption could reach 198 mg/g by increasing the ionic strength of RBB solution. Desorption tests showed that RDP adsorbent has the disadvantage of losing efficiency while reusing for many cycles. However, it still abundant and inexpensive. Therefore, RDP can be used as a potential low-cost bioabsorbent for the elimination of RBB from wastewater.

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Ciprofloxacin removal from aqueous solutions by ozonation with calcium peroxide

Cited by 61 publications

References 54 publications

Synthesis, characteristics, and photocatalytic activity of zinc oxide nanoparticles stabilized on the stone surface for degradation of metronidazole from aqueous solution

Synthesis, characteristics, and photocatalytic activity of zinc oxide nanoparticles stabilized on the stone surface for degradation of metronidazole from aqueous solution

Removal of gas condensate from industrial wastewater using low‐cost adsorbents: Optimization by Box–Behnken design method

Valorization of Date Pits as an Effective Biosorbent for Remazol Brilliant Blue Adsorption from Aqueous Solution

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