Advanced oxidation processes in microreactors for water and wastewater treatment: Development, challenges, and opportunities

Dong, Guihua; Chen, Bing; Liu, Bo; Hounjet, Lindsay J.; Cao, Yiqi; Stoyanov, Stanislav R.; Yang, Min; Zhang, Baiyu

doi:10.1016/j.watres.2022.118047

Cited by 154 publications

(38 citation statements)

References 171 publications

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“…2 Therefore, it is of great importance to provide abundant fresh water resources with satisfactory quality to meet the increasing water demand, which can be achieved by treating wastewater and desalinating seawater. 3,4 Up to now, a variety of wastewater treatment and seawater desalination technologies have been developed, such as disinfection, 5 adsorption, 6 membrane filtration, 7 advanced oxidation, 8 solar desalination, 9 and so on. Importantly, it is anticipated that the design of various robust and multifunctional water remediation composite materials and devices (e.g., disinfectant, adsorbent, separation membrane, catalyst, and photothermal material) plays a crucial role in all these methods.…”

Section: Yiwen LImentioning

confidence: 99%

Robust and multifunctional natural polyphenolic composites for water remediation

Zhang

et al. 2022

Mater. Horiz.

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Section: Yiwen LImentioning

confidence: 99%

Robust and multifunctional natural polyphenolic composites for water remediation

Zhang

et al. 2022

Mater. Horiz.

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“…Further oxidation results in ring cleavage and the release of ketones, aldehydes, and carboxylic acids, which are more biodegradable than aromatics (Liu et al, 2021). Developments in more efficient oxidation processes can promote the mineralization of oil and control the discharge of toxic intermediates into the environment (Dong et al, 2022).…”

Section: Toxicity Of Demulsifiers and Treatment By-productsmentioning

confidence: 99%

Ecotoxicity Studies for On-Site Disposal of Decant Water During Oil Spills: A Review

Liu

Chen

Ling

et al. 2022

Front. Environ. Sci.

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Mechanical oil recovery, a most used tool for oil spill response, can generate a considerable proportion of oil-contaminated water (10–70%). Large storage space is commonly required to transport the recovered oil and water mixture to shore. Transit and transportation consume loads of time, money, and resources while reducing oil recovery’s overall efficiency and capacity. Techniques of on-site treatment and disposal of oily wastewater provide benefits for oil recovery by freeing storage space. However, the high petroleum content of decant water can lead to uncertain risks, if discharged into the marine ecosystem. Insufficient ecological toxicity data and research limit the standardization and establishment of regulative tools. To fill the knowledge gaps, this review comprehensively summarized recent studies on the potential impacts of the organic composition in decant water, including oil–water accommodated fractions, dispersed oil droplets, and other related chemicals, on various marine species (i.e., bacterium, invertebrates, fishes, plants, reptiles, and mammals). The toxicity effects and the ecological endpoints of oils, TPH, and PAHs on different species were discussed. Recommendations for future ecological impacts and decant water composition were provided to support the on-site disposal of the water fraction.

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“…Despite the fact that dyes are removed from wastewater, they are deposited on an adsorbent and hence the pollutant simply ends up somewhere else. Advanced oxidation processes have been widely applied for H 2 production , and pollutant degradation in wastewater. , However, the main drawback of this process is the poor visible-light sensitivity and the electron–hole pair recombination, which leads to low photocatalytic activity. It should be noted that both processes have more advantages rather than disadvantages.…”

Section: Introductionmentioning

confidence: 99%

Efficient Visible-Light Photocatalysis and Antibacterial Activity of TiO₂-Fe₃C-Fe-Fe₃O₄/Graphitic Carbon Composites Fabricated by Catalytic Graphitization of Sucrose Using Natural Ilmenite

et al. 2022

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Dyes in wastewater are a serious problem that needs to be resolved. Adsorption coupled photocatalysis is an innovative technique used to remove dyes from contaminated water. Novel composites of TiO 2 -Fe 3 C-Fe-Fe 3 O 4 dispersed on graphitic carbon were fabricated using natural ilmenite sand as the source of iron and titanium, and sucrose as the carbon source, which were available at no cost. Synthesized composites were characterized by X-ray diffractometry (XRD), Raman spectroscopy, transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), X-ray fluorescence spectroscopy (XRF), and diffuse reflectance UV–visible spectroscopy (DRS). Arrangement of nanoribbons of graphitic carbon with respect to the nanomaterials was observed in TEM images, revealing the occurrence of catalytic graphitization. Variations in the intensity ratio ( I D / I G ), L a and L D , calculated from data obtained from Raman spectroscopy suggested that the level of graphitization increased with an increased loading of the catalysts. SEM images show the immobilization of nanoplate microballs and nanoparticles on the graphitic carbon matrix. The catalyst surface consists of Fe 3+ and Ti 4+ as the metal species, with V, Mn, and Zr being the main impurities. According to DRS spectra, the synthesized composites absorb light in the visible region efficiently. Fabricated composites effectively adsorb methylene blue via π–π interactions, with the absorption capacities ranging from 21.18 to 45.87 mg/g. They were effective in photodegrading methylene blue under sunlight, where the rate constants varied in the 0.003–0.007 min –1 range. Photogenerated electrons produced by photocatalysts captured by graphitic carbon produce O 2 •– radicals, while holes generate OH • radicals, which effectively degrade methylene blue molecules. TiO 2 -Fe 3 C-Fe-Fe 3 O 4 /graphitic carbon composites inhibited the growth of Escherichia coli (69%) and Staphylococcus aureus (92%) under visible light. Synthesized novel composites using natural materials comprise an ecofriendly, cost-effective solution to remove dyes, and they were effective in inhibiting the growth of Gram-negative and Gram-positive bacteria.

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Advanced oxidation processes in microreactors for water and wastewater treatment: Development, challenges, and opportunities

Cited by 154 publications

References 171 publications

Robust and multifunctional natural polyphenolic composites for water remediation

Robust and multifunctional natural polyphenolic composites for water remediation

Ecotoxicity Studies for On-Site Disposal of Decant Water During Oil Spills: A Review

Efficient Visible-Light Photocatalysis and Antibacterial Activity of TiO₂-Fe₃C-Fe-Fe₃O₄/Graphitic Carbon Composites Fabricated by Catalytic Graphitization of Sucrose Using Natural Ilmenite

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Advanced oxidation processes in microreactors for water and wastewater treatment: Development, challenges, and opportunities

Cited by 154 publications

References 171 publications

Robust and multifunctional natural polyphenolic composites for water remediation

Robust and multifunctional natural polyphenolic composites for water remediation

Ecotoxicity Studies for On-Site Disposal of Decant Water During Oil Spills: A Review

Efficient Visible-Light Photocatalysis and Antibacterial Activity of TiO2-Fe3C-Fe-Fe3O4/Graphitic Carbon Composites Fabricated by Catalytic Graphitization of Sucrose Using Natural Ilmenite

Contact Info

Product

Resources

About

Efficient Visible-Light Photocatalysis and Antibacterial Activity of TiO₂-Fe₃C-Fe-Fe₃O₄/Graphitic Carbon Composites Fabricated by Catalytic Graphitization of Sucrose Using Natural Ilmenite