Retention time of ozone at various water condition

Prawitasari, I A P; Mardawati, Efri; Cahyana, Yana; Sukarminah, Een; Rialita, Tita; Andoyo, Robi; Zaida,; Hanidah, In In; Setiasih, Imas Siti

doi:10.1088/1742-6596/1080/1/012033

Cited by 3 publications

(2 citation statements)

References 6 publications

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“…The literature presented that magnesium, manganese, and iron are able to react with ozone effectively, as shown in ( 5 ) [ 55 ]. Besides, there is a literature showing that the calcium in water helps ozone decomposition as well [ 56 ]. However, it was indicated that the ozone decomposition in water can be significantly low when there present hydroxyl radical scavengers [ 57 ], while caffeine is an effective hydroxyl radical scavenger (with a rate of 5.9×10 9 1/Ms) [ 58 ].…”

Section: Resultsmentioning

confidence: 99%

Indoor ozone removal and deposition using unactivated solid and liquid coffee

Jiang

Wen

2022

PLoS ONE

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Managing indoor ozone levels is important because ozone is a hazardous pollutant that has adverse effects on human health. Coffee is a popular daily beverage, and thus, coffee beans and spent coffee grounds are common in many places such as offices, homes, aircraft, cafeterias, and such. The most common material used to remove ozone is activated carbon which can be made from coffee beans or spent coffee grounds with proper activation processes. This paper presents a novel idea: to remove ozone at the level of an indoor environment using unactivated coffee products. This paper examines the ozone removal efficiency and the ozone deposition velocity at 130 ppb ozone for two types of coffee: solid coffee (powder) and liquid coffee (beverage). The activated carbon, the deionized water, and the seawater are also included for comparison and validation purposes. The tests show that the fine coffee powder has a removal efficiency of 58.5% and a deposition velocity of 0.62 cm/s. The liquid coffee has a removal efficiency of 34.4% and a deposition velocity of 0.23 cm/s. The chemical inspections indicate that the oxidation reactions with the carbohydrates in solid coffee and the metal/mineral elements in liquid coffee are responsible for ozone removal. These results have confirmed that ozone removal via coffee is effective, controlling indoor air quality by coffee products is thus becoming possible.

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Section: Resultsmentioning

confidence: 99%

Indoor ozone removal and deposition using unactivated solid and liquid coffee

Jiang

Wen

2022

PLoS ONE

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“… [ [327] , [328] , [329] ] [ 320 , 330 , 331 ] nitrogen dioxide (10 -5 [ 332 ]) . NO 2 [ [333] , [334] , [335] ] [ 274 ] nitrate (stable) NO 3 - HNO 3 [ [336] , [337] , [338] ] [ [339] , [340] , [341] ] nitrite (stable [ 342 ]) NO 2 - HNO 2 [ [343] , [344] , [345] ] [ [346] , [347] , [348] ] ozone (10 1 [ 349 ]) O 3 [ 350 , 351 ] [ [352] , [353] , [354] ] peroxynitrite (10 0 [ 355 ]) ONOO - [ 356 , 357 ] [ 165 , 344 ...…”

Section: (Medical) Gas Plasmamentioning

confidence: 99%

Medical gas plasma technology: Roadmap on cancer treatment and immunotherapy

Bekeschus

2023

Redox Biology

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Ozonization of Water, Retention of Ozone and Devitalization of Escherichia Coli in Water By Ozone

et al. 2021

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The aim of this study was to observe the efficiency of ozone transferred by an airstone bubble diffuser, using two ozone generators with different output of ozone (5 g.h–1 ‒ G1; 15 g.h–1 ‒ G2). The retention of ozone in ozonised distilled and potable water and the devitalisation effects on E. coli in the water were also noted. Ozone was introduced to two types of potable water of different composition intended for mass consumption, (MC)a and (MC)b, distilled water, and well water intended for individual consumption. The devitalisation effect of ozone on E. coli in well water (WW) and added to potable and distilled water was observed. The results of our study showed that under the conditions used, the level of ozone during ozonisation with G1 increased more rapidly in distilled water and after termination of ozonisation, the retention of ozone in distilled water was a little lower in comparison with the potable water. The devitalisation of E. coli either naturally present in the water or added to it required the level of ozone close to or equal to 0.25 mg.l–1.

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Retention time of ozone at various water condition

Cited by 3 publications

References 6 publications

Indoor ozone removal and deposition using unactivated solid and liquid coffee

Indoor ozone removal and deposition using unactivated solid and liquid coffee

Medical gas plasma technology: Roadmap on cancer treatment and immunotherapy

Ozonization of Water, Retention of Ozone and Devitalization of Escherichia Coli in Water By Ozone

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