Disinfection of water using pulsed power technique: Effect of system parameters and kinetic study

Singh, Raj Kamal; Babu, V. Suresh; Philip, Ligy; Sarathi, R.

doi:10.1016/j.cej.2015.09.019

Cited by 25 publications

(27 citation statements)

References 43 publications

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“…It was well-accepted that acid or alkali considerably affected the plasma disinfection . In order to clarify the synergistic effects of plasma and acid or alkali on the disinfection efficiency, the effects of pH on the disinfection efficiency were studied.…”

Section: Resultsmentioning

confidence: 99%

“…It was well-accepted that acid or alkali considerably affected the plasma disinfection. 43 In order to clarify the synergistic effects of plasma and acid or alkali on the disinfection efficiency, the effects of pH on the disinfection efficiency were studied. The shape parameter of the disinfection curve was further calculated to analyze the synergistic effects of plasma and acid or alkali on the disinfection efficiency according to the Weibull distribution model.…”

Section: Industrial and Engineering Chemistry Researchmentioning

confidence: 99%

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Plasma-Assisted Rotating Disk Reactor toward Disinfection of Aquatic Microorganisms

Cai

Luo

et al. 2019

Ind. Eng. Chem. Res.

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Plasma discharge in contact with water is a promising technology for disinfection. Developing efficient gas–liquid nonthermal plasma reactors for disinfection is very urgent. In this work, a plasma-assisted rotating disk reactor (plasma-RDR) was developed toward disinfection of Escherichia coli (E. coli). Experimental results show that the number of killed E. coli increased by 3.07 × 105 CFU·mL–1 within 60 min when the rotational speed increased from 0 to 500 rpm. Effects of discharge characteristics and other operating conditions on the disinfection efficiency were evaluated. Synergistic effects of plasma and acid or alkali on the disinfection efficiency were obvious. Based on the Weibull distribution model, the critical pH values of resistance were approximately 10.4 and 5.3. The main disinfection process of cell electroporation was inferred based on observations of the cell morphology. Compared with other reported plasma reactors and disinfection technologies, plasma-RDR has better disinfection efficiency at a lower energy consumption.

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Section: Resultsmentioning

confidence: 99%

Section: Industrial and Engineering Chemistry Researchmentioning

confidence: 99%

Plasma-Assisted Rotating Disk Reactor toward Disinfection of Aquatic Microorganisms

Cai

Luo

et al. 2019

Ind. Eng. Chem. Res.

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“…It was shown that the oxidation rate of organic compounds is proportional to the applied pulse voltage and frequency, it means for faster degradation rate, pulses with higher voltage and frequency are required. As it is addressed in [62], 92% removal rate was achieved after 10 min of treatment time with 15 kV pulses and a frequency of 25 Hz. However, 6 min treatment time was required to completely remove 2, 4-D pollutants when 25 kV pulses with 25 Hz frequency were applied.…”

Section: B Acid Decompositionmentioning

confidence: 97%

“…A water disinfection system was developed in [62] to treat 50 ml water sample contaminated with E. coli bacteria with a concentration of 10 7 cells/ml using a pulsed streamer discharge system. As shown in Fig.…”

Section: A E Coli Inactivationmentioning

confidence: 99%

“…A multiple pin-plane corona discharge reactor was developed in [85] to degrade 2, 4 dichlorophenoxyacetic acid (2, 4-D) with an initial concentration of 10mg/l. The developed prototype is the same as the one proposed in [62]. It was shown that the oxidation rate of organic compounds is proportional to the applied pulse voltage and frequency, it means for faster degradation rate, pulses with higher voltage and frequency are required.…”

Section: B Acid Decompositionmentioning

confidence: 99%

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A Review of Pulsed Power Systems for Degrading Water Pollutants Ranging From Microorganisms to Organic Compounds

2019

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Water quality improvement and collecting safe water are two of the paramount concerns in today's world. Numerous water treatment and pollutant removal processes are introduced that vary with the type of pollutants. Among the proposed pollutant degradation methods, pulsed power is one of the effective methods that can be applied not only to degrade a wide range of contaminants but also to address the environmental issues associated with water treatment chemicals. The effectiveness of the pulsed power technology in water treatment was studied for a wide range of pollutants including microorganisms, nutrient pollution, emerging pollutants, and organic pollutants. This paper presents a review of pulsed power systems developed for organic and inorganic pollutants degradation in different water treatment applications. Also, it presents the effectiveness of several factors like the electrical characteristics of the pulse voltages and treatment time on degradation rates of different pollutants.

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Degradation of Phenol in Water Using a Novel Gas-Liquid Two-Phase Dielectric Barrier Discharge Plasma Reactor

Zhang

Liu

Cheng

et al. 2018

Water Air Soil Pollut

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Disinfection of water using pulsed power technique: Effect of system parameters and kinetic study

Cited by 25 publications

References 43 publications

Plasma-Assisted Rotating Disk Reactor toward Disinfection of Aquatic Microorganisms

Plasma-Assisted Rotating Disk Reactor toward Disinfection of Aquatic Microorganisms

A Review of Pulsed Power Systems for Degrading Water Pollutants Ranging From Microorganisms to Organic Compounds

Degradation of Phenol in Water Using a Novel Gas-Liquid Two-Phase Dielectric Barrier Discharge Plasma Reactor

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