A Comparative Study to Analyse Efficacy of O3, O3/UV, O3/UV/PS for the Degradation of Reactive Dyes in Wastewater (Record no. 112350)
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| 000 -LEADER | |
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| fixed length control field | 04151ngm a22001457a 4500 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 180511b xxu||||| |||| 00| 0 eng d |
| 082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER | |
| Classification number | TT000061 |
| Item number | SHA |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Sharma, Sandip |
| 245 ## - TITLE STATEMENT | |
| Title | A Comparative Study to Analyse Efficacy of O3, O3/UV, O3/UV/PS for the Degradation of Reactive Dyes in Wastewater |
| Statement of responsibility, etc | by Sandip Sharma |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Place of publication, distribution, etc | Ahmedabad |
| Name of publisher, distributor, etc | Nirma Institute of Technology |
| Date of publication, distribution, etc | 2017 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 119p Ph. D. Thesis with Synopsis and CD |
| 500 ## - GENERAL NOTE | |
| General note | Guided by: Dr. J. P. Ruparelia With Synopsis and CD 10EXTPHDE47<br/><br/>ABSTRACT:<br/>The aim of present work was to investigate the performance assessment of reactor<br/>configurations for mineralization of synthetic wastewater by ozonation and ozone based<br/>Advanced Oxidation Processes (AOPs), i.e., O3, O3/UV, O3/UV/PS. Preliminary studies<br/>were carried out in Bubble column reactor with RB5 dye and efforts have been made to<br/>determine effects of various operating parameters such as, ozone flowrate, pH, UV<br/>intensity and TOC: PS ratio on selected processes i.e. O3, O3/UV and O3/UV/PS at<br/>constant parameters such as, initial concentration of RB5 at 500 mg/L, 12 pH, 60 LPH<br/>flow of O3, UV intensity 66 W (if applicable) and TOC:PS ratio 1:40 (if applicable). It<br/>was observed that O3/UV/PS is more efficient in removal of TOC. Further, experiments<br/>were conducted in the bubble column with recirculation and in Venturi reactor, the result<br/>exhibited better performance of Venturi reactor in terms of %TOC removal. Further, the<br/>design of experiments was planned with parameters such as types of dye, water<br/>recirculation flow, pH, ozone flow, UV intensity, TOC:PS ratio and initial dye<br/>concentration, for both the reactor configuration. The study revealed that in Bubble<br/>column with recirculation reactor, water recirculation had a significant effect on overall<br/>treatment performance, i.e. %TOC removal, whereas, for Venturi reactor dye had a<br/>significant effect on overall treatment performance. In design of experiments excluding<br/>dye as parameter and remaining set of parameters as it is, with three different dyes, i.e.,<br/>RB5, RY145 and RR 120 for both the reactor configuration, confirmed superior<br/>performance of Venturi reactor. The better performance of Venturi reactor may be<br/>attributed to proper contact of ozone, persulfate, and pollutant. Based on design of<br/>experiments best operating parameters were chosen to be 1.86 g hr-1 ozone flowrate, 12<br/>pH, 66W UV intensity and 1:40 TOC:PS ratio. It was also investigated that %TOC removal of synthetic dye solution of selected reactive dyes follows pseudo first order<br/>kinetics with respect to the dye. Compared to Bubble column with recirculation,<br/>degradation rate was higher in Bubble column and Venturi reactor. In addition, kinetic<br/>studies were conducted for O3/UV/PS process in three different reactor configurations.<br/>The kinetic rate constants obtained were, 0.0122 min-1, 0.0115 min-1 and 0.0205 min-1<br/>for Bubble column, Bubble column with recirculation and Venturi, respectively. Thus,<br/>O3/UV/PS was found to be a most efficient process with Venturi reactor amongst the<br/>above-mentioned processes. Further, studies were carried out with the optimized<br/>parameters for O3/UV/PS in Venturi reactor for an individual dye to identify some<br/>important parameters such as kinetic rate constant, EE/O and TOC/OCC. Studies<br/>revealed TOC removal 86.34%, 82.14% and 59.47% for RB5, RR120, and RY145<br/>respectively. In addition, the result of EE/O which is used to analyze the effectiveness of<br/>selected AOPs on the basis of electrical energy consumption, was 125.35, 144.88 and<br/>276.40 for RB5, RR120, and RY145 respectively, reflects higher energy consumption<br/>per order reaction for RY145. Similarly, TOC/OCC results were 0.053, 0.043 and 0.039<br/>for RB5, RR120, and RY145 respectively, reflects recalcitrant nature of RY145. Thus,<br/>the research concluded that O3/UV/PS process provides efficient removal of TOC.<br/>However, its performance depends on reactor configuration. Venturi reactor is more<br/>efficient than bubble column reactor with recirculation. |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | http://repository.nirmauni.ac.in/jspui/handle/123456789/7990 |
| Public note | Institute Repository (Campus Access) |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | https://shodhganga.inflibnet.ac.in/jspui/handle/10603/207034 |
| Public note | Shodhganga |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Dewey Decimal Classification |
| Koha item type | Thesis |
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