Ciprofloxacin desorption from gel type ion exchange resin: Desorption modeling in batch system and fixed bed column

Staudt, Júnior; Scheufele, Fabiano Bisinella; Ribeiro, C.; Sato, Thiago Yudi; Canevesi, Rafael Luan Sehn; Borba, Carlos Eduardo

doi:10.1016/j.seppur.2019.115857

Cited by 32 publications

(8 citation statements)

References 31 publications

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“…So far, several researchers have used HCl as an eluent because of its low price and easy accessibility. 51,52 The desorption performance of the PAN A F–Cl in HCl solution was studied, as shown in Table S7,† and PAN A F–P was soaked in HCl solution under different conditions, such as volume, concentration and time to optimize its optimal desorption conditions. The results exhibited that the desorption efficiency reached its highest value of 95.66% under the conditions of 30 mL of 0.3 mol L −1 HCl for 5 h. As shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Efficient capture of phosphate from wastewater by a recyclable ionic liquid functionalized polyacrylonitrile fiber: a typical “release and catch” mechanism

Zheng

et al. 2022

Environ. Sci.: Water Res. Technol.

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Section: Resultsmentioning

confidence: 99%

Efficient capture of phosphate from wastewater by a recyclable ionic liquid functionalized polyacrylonitrile fiber: a typical “release and catch” mechanism

Zheng

et al. 2022

Environ. Sci.: Water Res. Technol.

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“…where q t is the ectoine concentration on the resin (mg g −1 ) at time t; k F is the volumetric mass-transfer coefficient in the external liquid film (min −1 ); ρ P is the resin particle density (g/mL); and C t and C e are the ectoine concentrations, desorbed in the aqueous phase at time t [36]. Figure 1 shows the effect of adsorption time on the strong-acid cation-exchange resin adsorption in a reciprocating water bath shaker.…”

Section: Desorption Kinetic Modelsmentioning

confidence: 99%

“…Mathematical modeling of experimental data from the batch reactor was undertaken to construct a robust and trustworthy mathematical model that could predict the kinetics of desorption in a fixed-bed column [36]. Table 7 shows the desorption results using the external diffusion model (EDM); the simulated parameters were not reliable based on the unstable R 2 .…”

Section: Desorption Kinetics Of Ectoine From the Ion-exchange Resinmentioning

confidence: 99%

Adsorption and Desorption Behavior of Ectoine Using Dowex® HCR-S Ion-Exchange Resin

Wei

2021

Processes

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Dowex® HCR-S ion-exchange resin was used to adsorb ectoine in a batch system under varying operation conditions in terms of contact time, temperature, pH value, initial concentration of ectoine, and type of salt. Six adsorption isotherm models (Langmuir, Freundlich, Temkin, Dubinin–Radushkevich, Sips, and Redlich–Peterson) and three kinetic models (pseudo-first-order, pseudo-second-order, and intraparticle diffusion) were used to investigate the ectoine adsorption mechanism of ion-exchange resin. According to the experimental results, the mechanism of ectoine adsorption using an ion exchanger includes the ion-exchange reaction and physisorption. Both the Langmuir and Freundlich models were found to have a high fitting. For the kinetic analysis, the pseudo-second-order and intraparticle diffusion models were suitable to describe the ectoine adsorption. Dowex® HCR-S resin has an average saturated adsorption capacity of 0.57 g/g and 93.6% of ectoine adsorption at 25~65 °C, with an initial concentration of 125 g/L. By changing the pH of the environment using NaOH solution, the adsorbed ectoine on the ion-exchange resin can be desorbed to 87.7%.

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“…Sequel to adsorption process the regeneration of exhausted adsorbent is very important in the water treatment process. The possibility of reuse of the adsorbent heightens the economic viability of the process [51,52]. For this study, ve different eluents were used for the evaluation of desorption e ciency which includes acetic acid (CH 3 COOH), water (H 2 O), potassium hydroxide (KOH), hydrochloric acid (HCl) and sodium hydroxide (NaOH).…”

Section: Desorption and Regeneration Studiesmentioning

confidence: 99%

Clean Technology Approach For Ciprofloxacin Sequestration Using Modified Banana Stalk

Oreofe

Ogunleye

Bello

2020

Preprint

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The adsorption mechanisms and capacity of adsorbent derived from banana stalks in removing ciprofloxacin (CIP) from aqueous solutions were investigated in this study. The Banana Stalk Activated Carbon (BSAC) was prepared through acid activation and were characterised via SEM, FTIR and pHpzc. The SEM micrograph of BSAC revealed prominent well-developed pores which aid the adsorption process. The FTIR spetra shows the presence of various functional groups for efficient CIP adsorption. The effects of temperature (30 – 70 oC), adsorbent dosage (0.01 – 0.05 g/L), pH (2 - 10),initial adsorbate concentration (1 - 5 mg/L) and contact time (10 - 360 min) were evaluated using batch operations. Optimum CIP adsorption was obtained at pH 6. The maximum monolayer adsorptive capacity of the acid-treated banana stalk was 222.22 mg/g at 30 oC. Langmuir isotherm was the most appropriate isotherm model while pseudo second order kinetics best describe the kinetic process. Its thermodynamic studies indicated endothermic and spontaneous process. The cost implication of BSAC preparation (12.35 USD/kg) indicates that it is about 21 times cheaper than Commercial activated carbon (270.8 USD/kg) while the desorption studies reflects the reusability efficiency of the spent adsorbent. BSAC was found to be effective, efficient and economically viable for ciprofloxacin removal from aqueous solution.

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Ciprofloxacin desorption from gel type ion exchange resin: Desorption modeling in batch system and fixed bed column

Cited by 32 publications

References 31 publications

Efficient capture of phosphate from wastewater by a recyclable ionic liquid functionalized polyacrylonitrile fiber: a typical “release and catch” mechanism

Efficient capture of phosphate from wastewater by a recyclable ionic liquid functionalized polyacrylonitrile fiber: a typical “release and catch” mechanism

Adsorption and Desorption Behavior of Ectoine Using Dowex® HCR-S Ion-Exchange Resin

Clean Technology Approach For Ciprofloxacin Sequestration Using Modified Banana Stalk

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