Investigating the Effects of Atmospheric Pressure Air DBD Plasma on Physio-Chemical and Microbial Parameters of Groundwater

Shrestha, R.K.; Pradhan, Shreekar; Guragain, Rajesh Prakash; Subedi, Deepak Prasad; Pandey, Bishnu Prasad

doi:10.4236/oalib.1106144

Cited by 6 publications

(4 citation statements)

References 38 publications

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“…Consistent with our study, several studies have reported a decrease in the pH of solutions after cold plasma treatment. A gradual declination in the pH of a groundwater sample was reported over time when treated with a dielectric barrier discharge plasma system [34]. Similarly, a decrease in the pH of plasma-treated water with air as the influent gas was attributed to the effects of nitric and nitrate acids produced as a result of the reaction between H 2 O molecules and NOx species [37].…”

Section: Discussionmentioning

confidence: 96%

“…Cold plasma removed 98.9% of Fe at a low Fe concentration (3.76 mg•L −1 ), and 97.8% of Fe at a 9.09 mg•L −1 concentration. One experiment [34] studied the change in physical, chemical, and biological parameters of groundwater by means of direct dielectric discharge barrier plasma activation. There was a significant reduction in the concentration of heavy metals such as chromium, manganese, cadmium, iron, lead, and zinc after cold plasma treatment.…”

Section: Discussionmentioning

confidence: 99%

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Effects of Cold Plasma and Ozone Water Treatment on Micronutrient Solubility

Thakulla

Fisher

2023

Horticulturae

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Cold plasma and ozone sanitation of irrigation solutions can oxidize both microbes and non-target micronutrients because their high oxidation-reduction potential (ORP) is a non-selective mode of action. The objective of this study was to evaluate the effects of cold plasma and ozone treatment on oxidation of iron and manganese in nutrient solutions containing one of four iron chelates (iron-ethylenediaminetetraacetic acid (Fe-EDTA), iron-diethylenetriaminepentaacetic acid (Fe-DTPA), iron-ethylenediamine-N,N′-bis(2-hydroxyphenylacetic acid) (Fe-EDDHA), and hydroxybenzyl ethylenediamine (Fe-HBED)). Nutrient solutions were recirculated through the cold plasma or ozone system until the ORP reached 700 mV. The concentrations of total dissolved iron, manganese, and chelated iron were measured before and after passing through the treatment systems. Both cold plasma and ozone oxidized chelates and decreased the solubility of iron and manganese. Cold plasma and ozone had similar effects on micronutrients, pH, electrical conductivity, and dissolved oxygen at a standardized target ORP of 700 mV. Fe-EDTA was the most resistant chelate to oxidation. With Fe-EDTA, ORP increased more quickly, and the concentration of chelated Fe decreased less with the increasing ORP over time compared with Fe-DTPA, Fe-EDDHA, and Fe-HBED. The concentration of chelated Fe decreased by up to 80% for EDDHA at 700 mV compared with a 20% decrease for EDTA. The concentration of Mn decreased by up to 85% at 700 mV. The design of water treatment with cold plasma or ozone therefore requires consideration of secondary effects on micronutrients. The treatment dosage, flow rate, and nutrient solution at a particular grower operation are likely to affect the quantity of micronutrient fertilizer that needs to be supplemented following treatment. Use of Fe-EDTA is one strategy to reduce the loss of iron and increase residual ORP that is available for sanitation.

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Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 99%

Effects of Cold Plasma and Ozone Water Treatment on Micronutrient Solubility

Thakulla

Fisher

2023

Horticulturae

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“…8,59,60 Electrical conductivity (EC) usually identifies active ions present in a liquid and measures the liquid's ability to transport an electrical current. 19,24,61 There was a significant increment of EC in PAW samples as plasma activation time increased, reaching 58.6 ± 1.60 µS/cm at 10 min, pointing out the generation of active ions in PAW.…”

Section: E Physical and Chemical Specificationsmentioning

confidence: 90%

Effects of Plasma-Activated Water on Soybean and Wheat: Germination and Seedling Development

et al. 2022

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The goal of this study is to explore how water treated using plasma affects the germination and growth of soybean and wheat seedlings. Deionized water (DIW) was exposed to a gliding arc discharge (GAD) for 5 and 10 min to create plasma-activated water. DIW revealed significant changes in physical properties as well as chemical parameters after its treatment with plasma. The germination rate (growth metrics, such as shoot/seedling length, imbibition rate of seeds, and vigor indices), increased when plasma-treated water was used for irrigation purposes. In conclusion, when plasma-treated water is used for irrigation, a better result yield in germination is acquired.

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“…It has potentially a wide range of applications including environmental and biological fields such as food sterilization, cancer cell treatment, materials processing, and wastewater treatment. In package decontamination of foods, using cold plasma has advanced this technology as a single process for fresh foods decontamination and shelf-life extension [8,9]. e cold plasma treatment is effective for both underground water as well as surface drinking water to enhance their quality.…”

Section: Introductionmentioning

confidence: 99%

Experimental Studies on Physicochemical Parameters of Water Samples before and after Treatment with a Cold Atmospheric Plasma Jet and its Optical Characterization

Baniya

Guragain

Panta

et al. 2021

Journal of Chemistry

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Cold plasma-liquid interaction becomes a growing interdisciplinary area of research involving plasma physics, fluid science, and chemistry. Plasma-liquid interaction has gained more interest over the last many years due to its potential applications in different fields. Cold atmospheric plasma jet is an emerging technology for surface drinking water treatment to improve quality and surface modification that is chemical-free and eco-friendly. Cold plasma treatment of water samples results in changes in turbidity, pH, and conductivity and in the formation of reactive oxygen and nitrogen species (RONS). As a result, plasma-activated water has a different chemical composition than water and can serve as an alternative technique for microbial disinfection. CAPJ has been generated by a high voltage 5 kV and a high frequency 19.56 kHz power supply. The discharge has been characterized by an optical method. To characterize the cold atmospheric pressure argon plasma jet, discharge plume temperature, and electron rotational and vibrational temperature have been determined. Cold atmospheric argon plasma jet produced at atmospheric condition contains high energetic electrons, ions, UV radiation, reactive oxygen, and nitrogen species named as cold plasma which has a wide range of applications in the biomedical industry, as well as in water treatment. Nowadays, researches have been carried out on ozonation through plasma jet interaction with surface drinking water. In this paper, we compare the change in physical and chemical parameters of surface water used for drinking purposes. The significant change in the physical parameters such as pH, turbidity, and electrical conductivity was studied. In addition, the significant changes in the concentration and absorbance of nitrate, ferrous, and chromium ions with respect to treatment time were studied. Our results showed that plasma jet interaction with surface drinking water samples can be useful for the improvement of water quality and an indicator for which reactive species play an important role in plasma sterilization.

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Investigating the Effects of Atmospheric Pressure Air DBD Plasma on Physio-Chemical and Microbial Parameters of Groundwater

Cited by 6 publications

References 38 publications

Effects of Cold Plasma and Ozone Water Treatment on Micronutrient Solubility

Effects of Cold Plasma and Ozone Water Treatment on Micronutrient Solubility

Effects of Plasma-Activated Water on Soybean and Wheat: Germination and Seedling Development

Experimental Studies on Physicochemical Parameters of Water Samples before and after Treatment with a Cold Atmospheric Plasma Jet and its Optical Characterization

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