Effective sequestration of tetracycline and ciprofloxacin from aqueous solutions by Al-based metal organic framework and reduced graphene oxide immobilized alginate biosorbents

Kim, Nahyun; Cha, Byungjun; Yea, Yeonji; Njaramba, Lewis Kamande; Vigneshwaran, Sivakumar; Elanchezhiyan, S.Sd.; Park, Chang Min

doi:10.1016/j.cej.2022.138068

Cited by 66 publications

(17 citation statements)

References 55 publications

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“…Furthermore, it can be seen that XRD spectra of Zn−Cu BDC and Zn−Cu-BDC@CA CBs exhibit a similar pattern, and no significant change in the peak position was observed, indicating that the crystal structure remains the same after the incorporation of the cross-linking agents. 50 In the XRD pattern of Zn−Cu-BDC@CA CBs, the prominent peaks at 24.540°(211) and 42.568°(110) are in line with the standard Zn−Cu-BDC peaks, which show the successful incorporation of MOF in the hydrogel matrix. The spectra of the Zn−Cu-BDC@CA CBs illustrate that adding Zn−Cu MOF to the SA polymeric blend produces a reduced intensity peak.…”

Section: ■ Results and Discussionmentioning

confidence: 57%

“…The average crystalline size of Zn–Cu-BDC was 41 nm, and the Zn–Cu-BDC@CA CBs was 36.64 nm, calculated using the Debye–Scherrer equation. Furthermore, it can be seen that XRD spectra of Zn–Cu BDC and Zn–Cu-BDC@CA CBs exhibit a similar pattern, and no significant change in the peak position was observed, indicating that the crystal structure remains the same after the incorporation of the cross-linking agents . In the XRD pattern of Zn–Cu-BDC@CA CBs, the prominent peaks at 24.540° (211) and 42.568° (110) are in line with the standard Zn–Cu-BDC peaks, which show the successful incorporation of MOF in the hydrogel matrix.…”

Section: Resultsmentioning

confidence: 61%

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Batch Experimental Studies and Statistical Modeling for the Effective Removal of Tetracycline from Wastewater Using Bimetallic Zn–Cu-Metal–Organic Framework@Hydrogel Composite Beads

Laddha,

Sharma,

Jadhav

et al. 2023

Langmuir

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Section: ■ Results and Discussionmentioning

confidence: 57%

Section: Resultsmentioning

confidence: 61%

Batch Experimental Studies and Statistical Modeling for the Effective Removal of Tetracycline from Wastewater Using Bimetallic Zn–Cu-Metal–Organic Framework@Hydrogel Composite Beads

Laddha,

Sharma,

Jadhav

et al. 2023

Langmuir

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“…At neutral pH, the ciprofloxacin solubility is considerably low, which caused hydrophobic interactions. Moreover, π–π interactions, effective at all pH values, occur between the benzene rings belonging to the Co‐doped UiO‐66 and aromatic ring of ciprofloxacin, conducting ciprofloxacin adsorption process 43 . Hydrogen bonds between ciprofloxacin molecules and the functional hydroxyl groups of the Co‐doped UiO‐66 also affect the adsorption process positively 44 …”

Section: Resultsmentioning

confidence: 99%

Ciprofloxacin adsorption performance of Co‐doped UiO‐66

Yanardag,

Kaya,

Edebali

2023

Applied Organom Chemis

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The presence of ciprofloxacin in various water sources, even at low concentrations, causes health risks and serious environmental pollution as well as development of antibiotic resistance. So, it is critically necessary to remove ciprofloxacin effectively from the effluent. Co‐doped UiO‐66 was synthesized through one‐step hydrothermal method and evaluated as an adsorbent for ciprofloxacin adsorption. Ciprofloxacin adsorption was systematically investigated revealing adsorption isotherms, kinetics, and thermodynamics. The findings revealed that Freundlich isotherm model (maximum adsorption capacity: 45.17 mg g−1) at optimum experimental conditions (pH: 5, contact time: 90 min and adsorbent dosage: 0.3 g L−1) and acquired data were fitted using pseudo‐second‐order kinetic model. The ciprofloxacin adsorption was determined to be a spontaneous and endothermic from thermodynamic experiments. Effects of coexisting compound in the aqueous solutions on the Co‐doped UiO‐66 adsorption performance were studied using different concentrations of NaCl solution. The ciprofloxacin removal slightly decreased in the case of increasing the concentrations of Na+ ions. Regeneration of the Co‐doped UiO‐66 was carried out in methanol + acetic acid solution and repeated adsorption experiments were conducted to reveal reusability of the Co‐doped UiO‐66. Its ciprofloxacin adsorption capacity reduced to 38.0 mg g−1 after the four cycles indicating that the Co‐doped UiO‐66 was a reusable and potential adsorbent for ciprofloxacin adsorption process.

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“…This material has been assembled by reduced graphene oxide (rGO) sheets with strong π–π intersheet interactions, which exhibit good mechanical durability and electrical conductivity 21 . Inside the hydrogels, individual graphene sheets are largely separated owing to the repulsive electrostatic forces 22–24 . The porosity formed between adjacent graphene layers can provide abundant channels to permit fast gas transport within electrodes.…”

Section: Introductionmentioning

confidence: 99%

“…21 Inside the hydrogels, individual graphene sheets are largely separated owing to the repulsive electrostatic forces. [22][23][24] The porosity formed between adjacent graphene layers can provide abundant channels to permit fast gas transport within electrodes. More importantly, the porosity can be further manipulated by the evaporating water from hydrogel through capillary compression, which renders it a suitable candidate for nextgeneration hydrated electrodes for ORR.…”

mentioning

confidence: 99%

Dynamic gas‐diffusion electrodes for oxygen electroreduction to hydrogen peroxide

Xia

Huang

et al. 2023

AIChE Journal

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Flow‐type electrolytic cell is a viable system for many electrochemical processes, in which gas‐diffusion electrode (GDE) plays a vital role in providing optimal reacting interfaces for improved performances. Different from traditional GDEs with fixed porosity, here we propose a new type of GDE that features flexible diffusion channels. Particularly, the GDE has been assembled by pairing PTFE substrate with Ag‐TCNQ/graphene hydrogels that can be further manipulated through capillary compression. With dynamic adjustment, the average pore size inside GDE ranges from 1750 to 125 nm, and the packing density varies from 56.81 to 446.07 mg cm−3. As a consequence, the as‐assembled flow‐type electrolytic cell can display excellent performances, with a yield rate of 5572 mmol gcat−1 h−1 and Faradic efficiency of 86.4% at 0.267 V (vs. RHE). In addition, a photovoltaic (PV)‐driven flow‐electrolytic system has been assembled that achieves a record solar‐to‐hydrogen peroxide efficiency of 14.8%.

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Effective sequestration of tetracycline and ciprofloxacin from aqueous solutions by Al-based metal organic framework and reduced graphene oxide immobilized alginate biosorbents

Cited by 66 publications

References 55 publications

Batch Experimental Studies and Statistical Modeling for the Effective Removal of Tetracycline from Wastewater Using Bimetallic Zn–Cu-Metal–Organic Framework@Hydrogel Composite Beads

Batch Experimental Studies and Statistical Modeling for the Effective Removal of Tetracycline from Wastewater Using Bimetallic Zn–Cu-Metal–Organic Framework@Hydrogel Composite Beads

Ciprofloxacin adsorption performance of Co‐doped UiO‐66

Dynamic gas‐diffusion electrodes for oxygen electroreduction to hydrogen peroxide

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