Degradation of dichloroacetic acid in a novel corona discharge reactor integrated with microbubbles generation

Liu, Yanan; Wang, Qiancheng; Wang, Cihao; Ai, Zhang; Huang, Keliang; Liu, Jinxia; Miruka, Andere Clement; Han, Qianhan; Guo, Ying

doi:10.1016/j.seppur.2021.119019

Cited by 24 publications

(6 citation statements)

References 59 publications

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“…To mitigate radicals lost during the sampling process, the plasma-treated solution was taken from the quartz reactor quickly and then mixed with the corresponding trapping agent, followed by injection into the EPR device within 10 min using a glass capillary . The physicochemical properties of LICAP-treated solutions were measured with specific scavengers to determine the contribution of these dominant reactive species, including 1 M d -Man for • OH, 0.5 M l -His for 1 O 2 , 100 mM UA for ONOO – , 100 mM NaNO 3 (much higher than the NO 3 – generated during plasma discharge) for solvated electrons (e aq – ), and 100 U mL –1 SOD for • O 2 – . ,,, The inhibition level by each scavenger was calculated with the addition of specific scavengers. The scavengers alone did not interrupt E.…”

Section: Materials and Methodsmentioning

confidence: 99%

“…36 The physicochemical properties of LICAP-treated solutions were measured with specific scavengers to determine the contribution of these dominant reactive species, including 1 M D-Man for • OH, 0.5 M L-His for 1 O 2 , 100 mM UA for ONOO − , 100 mM NaNO 3 (much higher than the NO 3 − generated during plasma discharge) for solvated electrons (e aq − ), and 100 U mL −1 SOD for • O 2 − . 29,31,37,38 The inhibition level by each scavenger was calculated with the addition of specific scavengers. The scavengers alone did not interrupt E. coli viability or prophage activation (Figure S4).…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

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Bacterial Inactivation and Biofilm Disruption through Indigenous Prophage Activation Using Low-Intensity Cold Atmospheric Plasma

Huang

Chen

et al. 2022

Environ. Sci. Technol.

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Biofilms can be pervasive and problematic in water treatment and distribution systems but are difficult to eradicate due to hindered penetration of antimicrobial chemicals. Here, we demonstrate that indigenous prophages activated by low-intensity plasma have the potential for efficient bacterial inactivation and biofilm disruption. Specifically, low-intensity plasma treatment (i.e., 35.20 W) elevated the intracellular oxidative reactive species (ROS) levels by 184%, resulting in the activation of prophage lambda (λ) within antibiotic-resistant Escherichia coli K-12 (lambda+) [E. coli (λ+)]. The phage activation efficiency was 6.50-fold higher than the conventional mitomycin C induction. Following a cascading effect, the activated phages were released upon the lysis of E. coli (λ+), which propagated further and lysed phage-susceptible E. coli K-12 (lambda−) [E. coli (λ−)] within the biofilm. Bacterial intracellular ROS analysis and ROS scavenger tests revealed the importance of plasma-generated ROS (e.g., •OH, 1O2, and •O2 –) and associated intracellular oxidative stress on prophage activation. In a mixed-species biofilm on a permeable membrane surface, our “inside-out” strategy could inactivate total bacteria by 49% and increase the membrane flux by 4.33-fold. Furthermore, the metagenomic analysis revealed that the decrease in bacterial abundance was closely associated with the increase in phage levels. As a proof-of-concept, this is the first demonstration of indigenous prophage activations by low-intensity plasma for antibiotic-resistant bacterial inactivation and biofilm eradication, which opens up a new avenue for managing associated microbial problems.

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Section: Materials and Methodsmentioning

confidence: 99%

Section: ■ Materials and Methodsmentioning

confidence: 99%

Bacterial Inactivation and Biofilm Disruption through Indigenous Prophage Activation Using Low-Intensity Cold Atmospheric Plasma

Huang

Chen

et al. 2022

Environ. Sci. Technol.

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“…Ozone can also contribute to the formation of ˙OH and HO 2 species (Xu & Tan, 2023). Moreover, ozone interaction with the other reactive oxygen species might have resulted in the formation of O 2 , ˙O2 À , ONOO, ˙NO, HO 2 À , and ˙OH as per the following reactions (Liu et al, 2021;Zhou et al, 2019):…”

Section: Sem Analysismentioning

confidence: 99%

Continuous production and recirculation of plasma‐activated water bubbles under different flow regimes for mixed‐species bacterial biofilm inactivation inside pipelines

Dhaliwal,

Yang,

Roopesh

2024

Journal of Food Safety

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Biofilm formation in broiler drinking water systems is a public health concern. Bacterial detachment from the pipes into the drinking water subsequently increases the risk of waterborne transmission and has detrimental effects on animal and human health. The study evaluated the antimicrobial effectiveness of plasma‐activated water bubbles (PAWBs) recirculated under different flow regimes against the mixed‐species biofilms of Salmonella Typhimurium ATCC13311 and Aeromonas australiensis 03‐09 grown on the inner surfaces of polyvinyl chloride (PVC) pipes. A benchtop pipeline model representing broiler drinker lines was developed to compare the biofilm inactivation efficacy of PAWB recirculated at different flow rates, corresponding to Reynold's number of 1000, 2500, and 4000. The synergistic mechanical and oxidative recirculation using PAWB resulted in a higher biofilm inactivation from the pipe walls as compared to recirculation using distilled water alone. Apart from the flow regimes, various parameters including the volume of PAWB circulated, the concentration of the major plasma reactive species, and treatment time affected the susceptibility of the mixed‐species biofilms to PAWB treatment. Under all tested conditions, the bacterial cells were below the detection limit of 1 log CFU/mL in water after PAWB treatments. A better understanding of the hydrodynamic variations prevalent in the drinking water system is important for designing an effective disinfection protocol using PAWB. The results obtained from the study provide important information on the use of PAWB for biofilm control strategies.

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“…•OH play the most critical role in PRD removal (Liu et al 2019b). This is because active sites in the PRD molecular structure that are easily fractured by •O H are mainly aromatic rings and methylene groups between two nitrogen atoms.…”

Section: Role Of Various Radicalsmentioning

confidence: 99%

“…In recent years, the occurrence of emerging organic micropollutants (µPs) in water/wastewater has drawn much attentions. µPs include pesticides, herbicides, pharmaceuticals, plasticizers, and may result, when discharged along with wastewater effluent, in significant toxicity and environmental hazards (Lotfi et al 2022). µPs can accumulate in the environment for a long time, which makes human exposed to potential health risks (Alsbaiee et al 2016, Carpenter andHelbling 2018).…”

Section: Introductionmentioning

confidence: 99%

Degradation of micropollutants in secondary wastewater effluent using nonthermal plasma-based AOPs: The roles of free radicals and molecular oxidants

Chen

Yang

et al. 2023

Water Research

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Degradation of dichloroacetic acid in a novel corona discharge reactor integrated with microbubbles generation

Cited by 24 publications

References 59 publications

Bacterial Inactivation and Biofilm Disruption through Indigenous Prophage Activation Using Low-Intensity Cold Atmospheric Plasma

Bacterial Inactivation and Biofilm Disruption through Indigenous Prophage Activation Using Low-Intensity Cold Atmospheric Plasma

Continuous production and recirculation of plasma‐activated water bubbles under different flow regimes for mixed‐species bacterial biofilm inactivation inside pipelines

Degradation of micropollutants in secondary wastewater effluent using nonthermal plasma-based AOPs: The roles of free radicals and molecular oxidants

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