Biological degradation of ethanol in Southern California coastal seawater

Bruyn, Warren J. De; Clark, Catherine D.; Senstad, Mary; Toms, Natalie; Harrison, Aaron W.

doi:10.1016/j.marchem.2019.103703

Cited by 9 publications

(2 citation statements)

References 30 publications

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“…Water-based organic pollutants such as methylene blue (MB), methylene orange (MO), and rhodamine B (RB) have been a big concern and serious challenge all over the world, so a variety of environmental remediation of these contaminants inclusive of biological degradation, electrolysis oxidation degradation, and photocatalytic degradation has been frequently employed. Due to their excellent advantages like complete mineralization of pollutants, no requirement for the disposal of sludge, and low energy consumption, several photocatalytic degradation techniques with dispersive nanostructured catalyst or substrate-supported nanostructured catalyst or catalyst-coated macroscale channel, or nanostructured catalyst-based microfluidic reactor have been put forward to carbonize relevant organic species in wastewater.…”

Section: Introductionmentioning

confidence: 99%

Regulation of the Volume Flow Rate of Aqueous Methyl Blue Solution and the Wettability of CuO/ZnO Nanorods to Improve the Photodegradation Performance of Related Microfluidic Reactors

Jing

Gao

et al. 2021

Langmuir

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Six CuO/ZnO nanorod (CuO/ZnONR)-based microfluidic reactors were constructed for different UV irradiation durations, with which an aqueous methylene blue (MB) solution was photodegraded at varied volume flow rate Q. Via numerical and experimental routes, the effects of the Q on the kinetic adsorption rate constant K a and the initial rate constant K A of the CuO/ZnONR-based microfluidic reactors were discussed. Moreover, a reverse contacting angle (CA) trend of CuO/ZnONRs to the reaction constant K curve of corresponding CuO/ZnONR-based microfluidic reactor suggested that the CA of CuO/ZnONRs was another key influencing factor that affected greatly the photodegradation performance of the microfluidic reactors. The Q of the aqueous MB solution and the UV irradiation duration for the photodeposition of CuO/ZnONRs were optimized to be 125 μL/min and 1.0 h, the K of the CuO/ZnONR-based microfluidic reactors reached 4.84 min–1, and the related ΔK A/K was less than 6%. Similarly, these methods and results can be employed not only to enhance the mass transport and adsorption of specific species within other nanostructured matrix material-coated microchannels but also to enlarge the actual contacting surface areas between these microchannels and the related solution, which further improve the performance of other nanostructured catalyst-based microfluidic reactors, rGO microfluidic voltage generation, and a GOx/AuNW enzymatic glucose microfluidic sensor.

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Section: Introductionmentioning

confidence: 99%

Regulation of the Volume Flow Rate of Aqueous Methyl Blue Solution and the Wettability of CuO/ZnO Nanorods to Improve the Photodegradation Performance of Related Microfluidic Reactors

Jing

Gao

et al. 2021

Langmuir

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“…Smith and his colleagues [69] showed that EtOH (0.1 to 1%), compare to MeOH, has the ability to not only stimulate bacterial growth, but also acts as signaling molecule to change cell physiology in the test organism (i.e., Acinetobacter species), allowing the bacteria in their experiments to tolerate the toxic effects of salt. The rapid increase in turbidity during the EtOH treatment could therefore be explained by EtOH being metabolized by microorganisms, such as bacteria, and concurrent increase in its densities in the water ecosystems [33,70]. This can lead to problems in aquatic toxicology studies, such as the precipitation of hydrophobic test substances due to bacteria metabolizing the carrier solvents.…”

Section: Discussionmentioning

confidence: 99%

Ecotoxicological Effects of Four Commonly Used Organic Solvents on the Scleractinian Coral Montipora digitata

Mauro

Kamyab

Kellermann

et al. 2023

Toxics

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Organic solvents are often used in aquatic toxicity tests to facilitate the testing of hydrophobic or poorly water-soluble substances such as ultraviolet (UV) filters, pesticides, or polycyclic aromatic hydrocarbons (PAHs). Knowledge of intrinsic effects (i.e., measured as standardized and non-standardized endpoints) of such carrier solvents in non-standardized organisms (i.e., corals), is critical to regulatory processes. Therefore, we exposed the reef-building coral Montipora digitata to the most commonly used carrier solvents ethanol, methanol, dimethyl sulfoxide, and dimethylformamide in the range of 10–100 µL L−1 for 16 days. The effects on mortality, photobiological, morphological, and oxidative stress markers were evaluated. In our study, all solvents resulted in significant morphological and/or oxidative stress responses, but not in mortality. Moreover, ethanol led to a rapid increase in turbidity, thus questioning its suitability as a carrier solvent in aquatic studies in general. Based on our observations, we could rank the solvent effects as follows: dimethylformamide < dimethyl sulfoxide ≈ methanol ≤ ethanol, with dimethylformamide showing the least and ethanol the most pronounced effects. We conclude that the use of solvents in toxicity studies with corals, particularly by examining non-standardized (e.g., morphological, physiological) endpoints, should be taken with caution and requires further elaboration.

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Structural Applications of Graphene Based Biopolymer Nanocomposites

Gautam

Jain

2020

Graphene Based Biopolymer Nanocomposites

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Biological degradation of ethanol in Southern California coastal seawater

Cited by 9 publications

References 30 publications

Regulation of the Volume Flow Rate of Aqueous Methyl Blue Solution and the Wettability of CuO/ZnO Nanorods to Improve the Photodegradation Performance of Related Microfluidic Reactors

Regulation of the Volume Flow Rate of Aqueous Methyl Blue Solution and the Wettability of CuO/ZnO Nanorods to Improve the Photodegradation Performance of Related Microfluidic Reactors

Ecotoxicological Effects of Four Commonly Used Organic Solvents on the Scleractinian Coral Montipora digitata

Structural Applications of Graphene Based Biopolymer Nanocomposites

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