NDLI: Application of the photocatalytic reaction of TiO2 to disinfection and the killing of Escherichia coli bacteria

Please wait, while we are loading the content...

Application of the photocatalytic reaction of TiO2 to disinfection and the killing of Escherichia coli bacteria

Content Provider	Semantic Scholar
Author	Fairooz, Nada Y. A.al-Anbaeki, Rajaa Al-Zahra, A. G. Gassim Fatima
Copyright Year	2009
Abstract	Photocatalytic disinfection reaction under UVvisible light in presence of oxygen and Titanium dioxide (TiO2) in aqueous solution has been investigated .This method is effective for killing Escherichia -coli bacteria in water. TiO2 semiconductor exhibits strong bacterial activity .The aim of this research is to design a new photobioreactor and its application to sterilize the water from E-coli bacteria . Primary experiments have been done to determined the optimum conditions which lead to high killing efficiency of E-coli bacteria in aqueous solution . The results showed that the bacterial effect of TiO2 under UV-visible light irradiation on E-coli bacterial suspension was much higher than without using TiO2 .The photocatalytic reactions were carried out with various TiO2 concentrations. The highest photocatalytic E-coli photokilling rate was obtained at 0.5 mg/ml TiO2 concentration ,which is equal to 3.25 x 10 -2 CFUs /sec .This rate was increased to 5.8 x10 -2 CFUs /sec when 10 ppm of hydrogen peroxide was add to E-coli aqueous solution under UVvisible light in presence of oxygen and ideal concentration of TiO2 (0.5mg/ml). The mechanism of TiO2 illumination to produce oxidizing species and the effect of these species on the bacterial activity in aqueous solution has been suggested. ةصلاخلا دوجوب هايملا ميقعتل زفحملا يئوضلا لعافتلا ةسا رد يلاحلا ثحبلا نمضت TiO2 دعاسم لماعك ختسابو نيجسكولأاو لتق يف ةيلاع ةيلاعف ةقيرطلا هذه ترهظأ دقو , يئرملا فيطلاو ةيجسفنبلا قوف ةعشلأا ماد ايرتكب E-coli لصوملا هبش رهظا ثيح , ءاملا يف ةدوجوملا TiO2 . ةيريتكبلا ةيلاعفلا هاجت يلاع ريثأت فدهي ثحبلا اذه ىلإ ميقعت يف هقيبطتو ديدج يئوض يويح لعافم ميمصت هايملا هذه نم .ايرتكبلا مت ءا رجإ براجت ةدع ةيلوأ فورظلا ديدحتل لثملا ى يدؤت يتلاو ىلإ ىلعأ يف ةءافك ايرتكب لتق E-coli يئاملا لولحملا يف دقو. تحضوأ جئاتنلا نأ ريثأت عيعشت لأ ـ TiO2 ةعشلأاب ةيجسفنبلا قوفلا يئرملا ءوضلاو دنع هنم ريثكب ربكا ايريتكبلا ةيلاعف ىلع عيعشتلا مادختسا نود TiO2 دعاسم لماعك نم ةلسلس ءا رجإ مت امك . ءايميكلل ةيرطقلا ةلجملا 0229 نوثلاثلاو سماخلا دلجملا 35 National Journal of Chemistry,2009, Volume 481 نم ةفلتخم زيكا رت دوجوب ةزفحملا ةيئوضلا تلاعافتلا TiO2 دنع يئوض لتق ةعرس ىلعأ ىلع لوصحلا مت دقو زيكرت 0.5mg/cm نم TiO2 سلا هذه تناكو ر ىلإ ةيواسم ةع 3.25 x10 CFUs/sec. . دقو هذه تدادزا ىلا ةعرسلا 5.8 x10 CFUs /sec ةفاضا دنع 10 ppm نيجورديهلا ديسكوريب نم يئاملا لولحملا ىلا ايرتكبل E-coli يلاثملا زيكرتلاو نيجسكولاا دوجوب يئرملا فيطلاو ةيجسفنبلا قوفلا ةعشلاا مادختساب لماعلل ( دعاسملا .(0.5 mg/ml عيعشت ةيكيناكيم حا رتقا مت TiO2 نيوكتل سا ردو ةدسكؤم ءا زجأ ىلع ءا زجلأا كلت ريثأت ة لا يف ةيريتكبلا ةيلاعفلا م .يئاملا لولح
Starting Page	480
Ending Page	488
Page Count	9
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://www.iasj.net/iasj?aId=16363&func=fulltext
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

Central Library (ISO-9001:2015 Certified)
Indian Institute of Technology Kharagpur
Kharagpur, West Bengal, India | PIN - 721302

See location in the Map
03222 282435
Mail: support@ndl.gov.in

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in