Inactivation of Escherichia coli by ultrasonic irradiation

Furuta, Mamoru; Yamaguchi, Masuro; Tsukamoto, Teizo; Yim, Bongbeen; Stavarache, Carmen; Hasiba, K.; Maeda, Yasuhiro

doi:10.1016/s1350-4177(03)00136-6

Cited by 94 publications

(43 citation statements)

References 9 publications

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“…Under these conditions, the occurrence of cavitation phenomena, which consist in the cyclic formation, growth and collapse of micro-bubbles in the liquid, determines an intense increase in both temperature and pressure, resulting in the formation of free radicals [40]. Cavitation promotes both physical and chemical effects, although it has been extensively proved that physical phenomena are predominant at low frequency, while high frequency ultrasound mainly supports chemical effects (Fig.…”

Section: Sonolysismentioning

confidence: 99%

Removal of Endocrine Disruptors from Urban Wastewater by Advanced Oxidation Processes (AOPs): A Review

Cesaro¹,

Belgıorno²

2016

TOBIOTJ

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Abstract:Over the last years the growing presence of endocrine disrupting compounds in the environment has been regarded as a serious sanitary issue. The more and more frequent detection of these compounds in the effluents of wastewater treatment plants poses the risk associated to their persistence into the aquatic systems as well as to their adverse effects on both public health and environment.As conventional systems do not allow their efficient removal, great attention has been raised towards their possible treatment by Advanced Oxidation Processes (AOPs). They rely on the action of hydroxyl radicals, which are highly reactive species, able to oxidize recalcitrant and non-biodegradable pollutants.AOPs can either provide contaminant partial degradation or their complete removal. As their effectiveness has been proved for a wide spectrum of both organic and inorganic pollutants, they are considered a suitable option for the treatment of contaminated aqueous media, especially when combined with conventional biological processes.This paper aims at reviewing main AOPs for the removal of endocrine disruptors, in order to highlight the most important features of different technologies, thus providing their comparative assessment. To this end, a brief overview of the most frequently detected endocrine disruptor compounds was also discussed, in order to clarify their fate into the environment as well as the contamination pathways of greatest concern for human health.

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Section: Sonolysismentioning

confidence: 99%

Removal of Endocrine Disruptors from Urban Wastewater by Advanced Oxidation Processes (AOPs): A Review

Cesaro¹,

Belgıorno²

2016

TOBIOTJ

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“…Furuta et al, (2004), investigated the inactivation of E. coli along with hydrogen peroxide formation due to water sonolysis, in order to assess the feasibility of hydrogen peroxide formation as an indicator of bacterial inactivation. A 27.5 kHz horn type sonicator was used; its operation was based on the "squeeze-film effect" (i.e.…”

Section: Disinfection By Ultrasound Irradiationmentioning

confidence: 99%

Water and wastewater disinfection by ultrasound irradiation - a critical review

Naddeo¹,

Cesaro²,

Mantzavinos³

et al. 2014

Global NEST Journal

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It is well known that chlorine and its compounds, traditionally utilized for water and wastewater disinfection, react with some organic matter to form undesirable by-products, hazardous to human health, known as Disinfection By-Products (DBPs). In many countries very stringent limits for chlorination by-products such as trihalomethanes were set for wastewater reuse. Accordingly, the use of different oxidation/disinfection systems should be evaluated as possible alternative to chlorine. Ultrasound (US) was recently found to be effective for this purpose.Aim of this work is to review main US disinfection studies, pointing out ultrasound mechanisms as well as its effects in terms of different bacteria inactivation (Total coliform, Escherichia coli, Pseudomonas aeruginosa, Bacillus subtilis, Saccharomyces cerevisiae, Klebsiella pneumonia) at both laboratory scale and pilot-scale. To this end, several experimental results were discussed and both focal interest points and encountered problems were summarized.Moreover the intensification of cavitation phenomena by combined oxidation processes was overviewed and main advantages and disadvantages were pointed out, in order to address future research and promote efficient large scale operations.

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“…20 kHz ultrasound applied using a 60 W transducer decreased viability of E. coli exponentially with time (Allison et al, 1996). Higher intensity also increased the rate of cell mortality (Furuta et al, 2004).…”

Section: Introductionmentioning

confidence: 98%

Disinfection of Water by Ultrasound: Application to Ballast Water Treatment

Brizzolara¹,

Holm²,

Stamper³

2006

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This page intentionally left blank REPORT DOCUMENTATION PAGEForm Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing this collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden to Department of Defense, Washington Headquarters Services, Directorate for Information Operations and Reports (0704-0188), 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS. (From -To) REPORT DATE (DD-MM-YYYY) 01-10-2006 REPORT TYPE FINAL DATES COVERED SPONSOR/MONITOR'S REPORT NUMBER(S) DISTRIBUTION / AVAILABILITY STATEMENTApproved for public release; distribution unlimited SUPPLEMENTARY NOTES ABSTRACTUltrasound has potential application in disinfecting a variety of water streams, including shipboard ballast water to avoid transfer of non-indigenous species between geographic locations. Two approaches for improving the performance of ultrasound in disinfecting bacteria were examined: 1) optimizing the ultrasonic intensity by varying the treatment cell diameter, and 2) using ultrasound in conjunction with a second treatment. A contact time for one log kill of an E. coli pure culture of 0.6 minutes was measured when using higher average intensities resulting from reduced treatment cell diameters, a substantial improvement over previous work. Combined treatment consisting of ultrasonic and thermal treatment resulted in a reduction of about 40% in contact time for one log kill of E. coli. Since a contact time of 0.6 minutes per log kill is still likely to be too long for a flow-through treatment system for ballast water, the applicability of ultrasound to ballast water treatment is expected to focus on zooplankton, for which ultrasound is very effective. A second treatment that targets the bacteria could also be employed. Additionally, ultrasound is effective in disinfecting both bacteria and zooplankton in lower flow rates and may have application to other water treatment applications. Additional experimentation is recommended using ultrasound to disinfect natural seawater. SUBJECT TERMSUltrasound; ballast water; disinfection; Artemia; E. coli; water treatment; terfenol

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Inactivation of Escherichia coli by ultrasonic irradiation

Cited by 94 publications

References 9 publications

Removal of Endocrine Disruptors from Urban Wastewater by Advanced Oxidation Processes (AOPs): A Review

Removal of Endocrine Disruptors from Urban Wastewater by Advanced Oxidation Processes (AOPs): A Review

Water and wastewater disinfection by ultrasound irradiation - a critical review

Disinfection of Water by Ultrasound: Application to Ballast Water Treatment

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