Photoinactivation of Escherichia coli and Enterococcus hirae in aqueous solution

Show simple item record Singh, Madhavi 2018-05-15T10:05:25Z 2018-05-15T10:05:25Z 2017
dc.identifier.other ROLL NO.11610619
dc.description Supervisors: Kannan Pakshirajan & Vishal Trivedi en_US
dc.description.abstract Water is essential to sustain all human related activity. However, water pollution due to different type of contamination limits its use. Among the different contaminating agents that may be present in water, coliforms poses a serious threat to the quality of water as it can lead to several diseases including cholera, dysentery, diarrhoea etc. therefore removal of these microorganisms from water prior to its use is usually carried out by a process commonly referred to as disinfection.Disinfection is often a chemical unit operation which commonly uses chlorine, hypochlorite, chloramines, chlorine dioxide, bromine and ozone. Among these, chlorine is the most widely used disinfectant for both drinking water and tertiary treatment of wastewaters. Its popularity is due to a high oxidizing potential that provides a minimum level of residual chlorine throughout the distribution system and protects against microbial recontamination. However, it has now been realized that the disinfection by-products due to the chlorination process has both carcinogenic and mutagenic effects on mammals, and therefore, its validity has become questionable. Due to this concern, recent research is focussed towards novel disinfection methods. Compared to the existing chemical methods for disinfection, photosensitization method using photoactive compounds appears more promising due to its easy implementation and low cost. It involves the combination of three non-toxic substance, i.e. a photosensitizer, light and molecular oxygen to achieve the purpose. Although, this technique has been found successful for medical applications, it is not well studied for wastewater applications. en_US
dc.language.iso en en_US
dc.relation.ispartofseries TH-1684;
dc.title Photoinactivation of Escherichia coli and Enterococcus hirae in aqueous solution en_US
dc.type Thesis en_US

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