Removal of pharmaceuticals in water by introduction of ozonated microbubbles

Azuma, Takashi; Otomo, Kana; Kunitou, Mari; Shimizu, Mai; Hosomaru, Kaori; Mikata, Shiori; Mino, Yoshiki; Hayashi, Tetsuya

doi:10.1016/j.seppur.2018.11.059

Cited by 58 publications

(20 citation statements)

References 59 publications

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“…However, O 3 gases injected into the aqueous phase generally remains in the gaseous phase because of its low solubility in water (1.0 × 10 −6 mol m −3 •Pa-1.3 × 10 −4 mol m −3 •Pa), which may allow O 3 gases existing in surface water and wastewater to pass through the reacting zone of the O 3 reactors without the chemical reactions with trace organic compounds [13]. Based on these reasons, it is required to develop a novel method for improving the solubilization rate of O 3 gases injected in surface water and wastewater closely associated with the removal of pharmaceutical compounds [14].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Degradation of Pharmaceutical Compounds by a Microbubble Ozonation Process: Effects of Temperature, pH, and Humic Acids

Lee

Park

Lee³

et al. 2019

Energies

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This study systematically investigated the feasibility of the microbubble ozonation process to degrade the 17α-ethinylestradiol, ibuprofen, and atenolol through the comparison with the millibubble ozonation process for elucidating the degradation behavior and mechanisms during the microbubble ozonation processes. The proportions of small microbubbles (diameter 1–25 μm) were increased with increasing the cavity pump frequency (40 Hz: 51.4%; 50 Hz: 57.5%; 60 Hz: 59.9%). The increased concentrations of O3 and OH radicals due to the higher specific area of O3 microbubbles compared to O3 millibubbles could facilitate their mass transfer at the gas–water interface. Furthermore, the elevated reactivity of O3 by increasing the temperature might improve the degradation of the pharmaceutical compounds, which was more pronounced for the microbubble ozonated waters than the millibubble ozonated waters. Although the degradation efficiency of the pharmaceutical compounds during the microbubble ozonation processes was significantly influenced by the existence of humic acids compared to the millibubble ozonation process, the increased solubilization rate of O3 and OH radicals by collapsing O3 microbubbles enhanced the degradation of the pharmaceutical compounds. Overall, these results clearly showed that the microbubble ozonation process could be an alternative option to conventional ozonation processes for the abatement of the pharmaceutical compounds.

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Section: Introductionmentioning

confidence: 99%

Enhanced Degradation of Pharmaceutical Compounds by a Microbubble Ozonation Process: Effects of Temperature, pH, and Humic Acids

Lee

Park

Lee³

et al. 2019

Energies

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“…MBs revealed numerous noticeable effects during combination with conventional therapies. For instance, MBs were employed for pharmaceutical removal in water with the aid of ozonated MBs [2]. Besides, MBs are known as significant contrast agents due to their high compressibility for imaging [3].…”

Section: Potential Clinical Applications Of Microbubblesmentioning

confidence: 99%

Integration of microbubbles with biomaterials in tissue engineering for pharmaceutical purposes

Esmaeili

Rezaei

Beram

et al. 2020

Heliyon

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Tissue engineering with the aid of biomaterials is a novel and promising knowledge aiming at improving human life expectancy. Besides, microbubbles are increasingly employed in biomedical applications due to their capability as a reservoir of therapeutic agents and oxygen molecules. In the present study, Microbubbles as the backbone of the research are produced as one of the potent devices in tissue engineering approaches, including drug delivery, wound healing, 3D printing, and scaffolding. It was shown that microbubbles are capable of promoting oxygen penetration and boosting the wound healing process by supplying adequate oxygen. Microbubbles also demonstrated their strength and potency in advancing drug delivery systems by reinforcing mass transfer phenomena. Furthermore, microbubbles developed the mechanical and biological characteristics of engineered scaffolds by manipulating the pores. Increasing cell survival, the biological activity of cells, angiogenesis, cell migration, and also nutrient diffusion into the inner layers of the scaffold were other achievements by microbubbles. In conclusion, the interest of biomedical communities in simultaneous usage of microbubbles and biomaterials under tissue engineering approaches experiences remarkable growth in Pharmaceutical studies.

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“…In the last years, several studies about removal of cephalosporin antibiotics from the aquatic environment have been published, [ 23,24 ] and only a few studies have been carried out on removal of cefdinir. [ 6,25–28 ]…”

Section: Introductionmentioning

confidence: 99%

Removal of Cefdinir from Water Using Waste Material‐Derived Activated Biochar as a Rapid, Effective, and Sustainable Adsorbent

Gümüş

Yumak

Gümüş

2021

CLEAN Soil Air Water

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Cefdinir adsorption onto non‐activated biochar (WL‐BC) and activated biochars (WL‐BC‐H, WL‐BC‐OH) prepared from waste biomass (WL) is comparatively investigated in view of adsorption factors, adsorption isotherms and adsorption kinetics. Batch experiments are conducted to assess the effects of pH, adsorption time and initial antibiotic concentration. Various advanced techniques are applied to characterize the prepared biochars (BCs). Characterization of the new BCs reveal that the activation process do not have a significant effect on the chemical structure of activated carbons, but it increases the surface area up to eight times. The equilibrium data are simulated with the Langmuir adsorption model indicating monolayer adsorption for both activated biochars WL‐BC and WL‐BC‐H. However, the adsorption isotherm for WL‐BC‐OH is represented well by the Freundlich model, which shows that multilayer adsorption took place. The kinetic data are analyzed using various kinetic models. The maximum adsorption capacity of the activated biochar is approximately tenfold in comparison to the non‐activated biochar. Additionally, the real wastewater experiments with treated campus wastewater show that the adsorptive performance of the activated biochar is not affected by other ions. Consequently, BCs derived from defatted laurel leaves could be effective and eco‐friendly adsorbents for removing cefdinir from wastewater.

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Removal of pharmaceuticals in water by introduction of ozonated microbubbles

Cited by 58 publications

References 59 publications

Enhanced Degradation of Pharmaceutical Compounds by a Microbubble Ozonation Process: Effects of Temperature, pH, and Humic Acids

Enhanced Degradation of Pharmaceutical Compounds by a Microbubble Ozonation Process: Effects of Temperature, pH, and Humic Acids

Integration of microbubbles with biomaterials in tissue engineering for pharmaceutical purposes

Removal of Cefdinir from Water Using Waste Material‐Derived Activated Biochar as a Rapid, Effective, and Sustainable Adsorbent

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