Comparison of indicator bacteria inactivation by the ultraviolet and the ultraviolet/hydrogen peroxide disinfection processes in humic waters

Teksoy, Arzu; Alkan, Ufuk; Eleren, Sevil Çalışkan; Şengül, Burcu; Şağban, Fatma Olcay Topaç; Başkaya, Hüseyin Savaş

doi:10.2166/wh.2011.205

Cited by 14 publications

(3 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Dental stool or dental chair is one of the cases prone to infections due to proximity to the unit and the site for performing the dental practice. Experience has shown that most students and dentists often replace the dental stool with infected gloves, and thereby, they indirectly transmit the infection (Teksoy et al, 2011;Cristina et al, 2008). The unit glasses spittoon is also continuously infected by blood and saliva.…”

Section: Introductionmentioning

confidence: 99%

“…By using them, we can reduce the rate of microorganisms causing pathogens. Chemicals such as 70% Alcohol and deconex, used as solvent in the workplace, are some of these substances (Teksoy et al, 2011). The performance of disinfectants will be effective if used in the manner recommended by the manufacturing company (Christensen et al, 1989;Best et al, 1990;Ardakani et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Evaluation of Disinfection Quality of Dental Faculty Units of Ahvaz Jundishapur University of Medical Sciences, Southwest of Iran in 2017

Bagheri¹,

Shooriabi²,

Amin³

et al. 2018

JMBR

View full text Add to dashboard Cite

Introduction: Performing dental practices in the oral environment leads to the transmission of microorganisms in saliva and blood to working surfaces and dental devices and their infection. Preventing transmission of infection through these devices is an important task of a dentist. Hence, this research was conducted to evaluate the disinfection quality of the dental faculty units of Ahvaz Jundishapur University of Medical Sciences (AJUMS) in Iran. Materials and Methods:In order to evaluate the quality of disinfection of the units, sampling was performed from all glasses spittoon surfaces of 90 units of the clinical unit of the AJUMS dental faculty before and after disinfection by personnel. Then, the bacteria were cultured in a medium and examined. Results:The mean (and standard deviation) of the total infection of units of the dental faculty was 46534.4 (583380.4) colonies per 1 ml before disinfection and 40265.6 (52131.1) colonies per 1 ml after disinfection, reflecting significant decrease in number of bacterial colonies after disinfection (P <0.001). In addition, a significant decrease was seen in the number of bacterial colonies in the restoration, pediatric, orthodontic and diagnosis units (p <0.05), but the difference before and after disinfection was not significant in the prosthetic, endodontic, surgical and periodontal units. In addition, the most common types of microorganisms in the whole units of the dental faculty were pseudomonas aeruginosa, Staphylococcus aureus and Streptococcus, respectively, and after disinfection, the most common types of microorganisms were Pseudomonas aeruginosa, Staphylococcus aureus and Enterococcus, respectively. Conclusion:In general, this study showed that the disinfection method of units in dental faculty can not reduce the severity of infection of the units. Given what was stated, it is recommended that the method and the substances used to disinfect the unit to be changed.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evaluation of Disinfection Quality of Dental Faculty Units of Ahvaz Jundishapur University of Medical Sciences, Southwest of Iran in 2017

Bagheri¹,

Shooriabi²,

Amin³

et al. 2018

JMBR

View full text Add to dashboard Cite

show abstract

“…Teksoy et al . demonstrated that UV/H 2 O 2 was significantly effective in inactivating Escherichia coli and Pseudomonas aeruginosa ; however, it exhibited low efficiency in B. subtilis spore inactivation. The differences may be concerned with various types of microorganisms, various kinds of UV sources, diverse UV doses and dissimilar microorganism initial concentrations .…”

Section: Introductionmentioning

confidence: 99%

Inactivation of Bacillus subtilis Spores Using Various Combinations of Ultraviolet Treatment with Addition of Hydrogen Peroxide

Zhang

Zhou

Zhang

2014

Photochem & Photobiology

View full text Add to dashboard Cite

This study aims at comparing the inactivation of Bacillus subtilis spores by various combinations of UV treatment and hydrogen peroxide (H2O2) addition. The combinations included sequential (UV-H2O2, H2O2-UV) and simultaneous (UV/H2O2) processes. Results showed that B. subtilis spores achieved a certain inactivation effect through UV treatment. However, hardly any inactivation effect by H2O2 alone was observed. H2O2 had a significant synergetic effect when combined with UV treatment, while high irradiance and H2O2 concentration both favored the reaction. When treated with 0.60 mm H2O2 and 113.0 μW/cm(2) UV irradiance for 6 min, the simultaneous UV/H2O2 treatment showed significantly improved disinfection effect (4.13 log) compared to that of UV-H2O2 (3.03 log) and H2O2-UV (2.88 log). The relationship between the inactivation effect and the exposure time followed a typical pseudo-first-order kinetics model. The pseudo-first-order rate constants were 0.478, 0.447 and 0.634 min(-1), for the UV-H2O2, H2O2-UV and UV/H2O2 processes, respectively, further confirming the optimal disinfection effect of the UV/H2O2 process. The disinfection could be ascribed to the OH radicals, as verified by the level of para-chlorobenzoic acid (pCBA).

show abstract

Physicochemical methods for disinfection of contaminated surfaces – a way to control infectious diseases

Basak,

Adak

2024

J Environ Health Sci Engineer

View full text Add to dashboard Cite

Comparison of indicator bacteria inactivation by the ultraviolet and the ultraviolet/hydrogen peroxide disinfection processes in humic waters

Cited by 14 publications

References 36 publications

Evaluation of Disinfection Quality of Dental Faculty Units of Ahvaz Jundishapur University of Medical Sciences, Southwest of Iran in 2017

Evaluation of Disinfection Quality of Dental Faculty Units of Ahvaz Jundishapur University of Medical Sciences, Southwest of Iran in 2017

Inactivation of Bacillus subtilis Spores Using Various Combinations of Ultraviolet Treatment with Addition of Hydrogen Peroxide

Physicochemical methods for disinfection of contaminated surfaces – a way to control infectious diseases

Contact Info

Product

Resources

About