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photocatalytic elimination of organic pollutant including dye and Pharmaceutical materials in batch reactor using Hierarchical ZSM-5

Moradi, Ashkan | 2022

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 55808 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Kazemeini, Mohammad; Hosseinpour, Vahid
  7. Abstract:
  8. The aim of this research is to make a hierarchical zeolite catalyst as a basis for photocatalytic removal reactions of organic pollutants including dyes and drugs. The three main parts of this thesis deal with preparing the photocatalyst, performing the characterization test and investigating the reaction in different operating conditions. To prepare zeolite, first an organic molecule was synthesized to increase the diameter of the holes and it was used along with the rest of the precursors in the hydrothermal method. To increase the efficiency of photocatalytic reactions, the silver element was deposited on the ZnO / zeolite catalyst by photodeposition method and its characteristics were checked by C-NMR, CHN, XRD, FE-SEM, FT-IR, DRS and BET analyses. Based on the FE-SEM images, the morphology of the synthesized zeolite particles is in the form of thin plates, and the oxide is spread in the form of almond-shaped nanoparticles on the surface of the zeolite.The results of DRS analysis show that the synthesized photocatalyst is active in the visible region. Laboratory results show that 3% Ag / ZnO / zeolite has higher efficiency in removing methylene blue than ZnO / zeolite under the same conditions, so that by adding 3% by weight of silver, the reaction efficiency increased from 95% to 98.9% in 2 hours. It will arrive in 1 hour. The efficiency of the synthesized photocatalyst was evaluated by examining components such as pH, initial pollutant concentration, and the amount of catalyst loaded by a batch reactor. Also, to measure the efficiency of 3%Ag / ZnO / zeolite photocatalyst for other colored and pharmaceutical pollutants, 10 ppm solutions of rhodamine B, methyl orange, naproxen, metformin and metronidazole were used, and the removal percentage was 93%, 62%, and 97%, respectively. , 91% and 78% and it shows that this catalyst has a good efficiency
  9. Keywords:
  10. Zeolite ; Zeolite Catalyst HZSM-5 ; Zinc Oxide ; Photocatalyst Reactor ; Dye Pollutants ; Methylene Blue ; Pharmaceutical Pollutants

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