Photocatalytic Degradation of Indigo Carmine in Aqueous Solutions by the Antibacterial Agent Pefloxacin and UVA
Journal Title: Biomedical Journal of Scientific & Technical Research (BJSTR) - Year 2018, Vol 5, Issue 5
Abstract
The kinetic characteristics of the photocatalytic degradation of Indigo Carmine using anti- bacterial agent pefloxacin were experimentally investigated with respect to the initial concentration of pefloxacin, concentration and PH. The photo blanching is found to be first order in both indigo and pefloxacin. The apparent pseudo first order arte constant is proportional to the initial concentration of the pefloxacin, also the Indigo Carmine is PH dependent and is found to be more effective at PH 10. So Indigo Carmine can be successes fully decolorized using pefloxacinas as a photo sensitizer. The oxidation products of Indigo Carmine were identified as Isatin using UVA. The blue coloration of Indigo Carmine was converted into a colorless solution after irradiation. We discover that, irradiating the solution of Indigo blue and pefloxacin causes the blue color of the organic dye to fade with the rate proportional to the concentration of the pefloxacin photosensitizer. A number of approaches were used for degradation of organic dye, the photochemical kinetic method described in this text is fast, sensitive and eliminate the need for sample preparation. Hence, this photochemical method can easily be automated using flow injection analysis so as to make it faster, easier and suitable for a number of organic dye detoxification. The Method of Chemical Kinetics Chemical kinetics is the study of chemical reactions with respect to reaction rate, effect of variables, formation of intermediate etc. It also includes investigation of how different experimental conditions can influence the speed of a chemical reaction. Kinetic methods are considered of great interest in chemical and pharmaceutical analysis Crouchs et al. [1]. The concept of using reaction-rate parameters to determine the initial analytical concentration of reactants dates back over a half of a century to the early literature in biochemistry, radiochemistry and phase diffusion, furthermore, among all the analysis performed in all laboratories around the world, the number carried out by kinetic-based methods probably exceeds that carried out by thermodynamics methods and direct instrumental measurement combined. This come surprise at first, until one considers the large number of enzymatic and other determinations done on multichannel autoanalysers used in clinical laboratories. Most of these rapid automated instrument use kinetic method Crouchs et al. [1]. The expanded use of automated continuous-flow sample processing in clinical and laboratories is also responsible for the increasing role that kinetics plays in contemporary analytical chemistry. In these continuous-flow procedures detection occurs in the un segmented continuous-flow stream while the system is attaining equilibrium by a physical or chemical process or both; thus, they are kinetic based Christian et al. [2]. Recent developments in instrument have contributed to a decrease in the dominance of equilibrium based methodology; consequently kinetic method is appropriate in this test. Every chemical reaction occurs at a finite rate, making it a potential candidate for a chemical kinetic method of analysis. To be effective, however, the chemical reaction must meet three necessary conditions: the reaction must not occur too quickly or too slowly; we must know the reaction’s rate law; and we must be able to monitor the change in concentration for at least one species Christian et al. [2]. The increasing role of digital computer in performing computational tasks makes multipoint methods more attractive than techniques based on a small number of data points. From analytical view point, such approaches offer two main advantages; less experimental work is required to seek discriminating variables and the use of a large number of data point greatly reduces errors Christian et al. [2].
Authors and Affiliations
Sani S Bala, Ahed J Alkhatib, SS Bashir, Abdulhadi M
Keywords
Related Articles
- EP ID EP591845
- DOI 10.26717/BJSTR.2018.05.001275
- Views 193
- Downloads 0
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