E-Thesis 222 views 51 downloads
Treatment of Emerging Contaminants in Wastewater by Advanced Oxidation Processes / ANNA CATTON
Swansea University Author: ANNA CATTON
Abstract
This study evaluated the effectiveness of ozonation and activated carbon for the degradation and removal of three main emerging contaminants (ECs) in wastewater; fluoranthene (FLT), di (2- ethyl hexyl) phthalate (DEHP) and cypermethrin (CYM). The effects of key semi-batch ozonation parameters relate...
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Swansea, Wales, UK
2024
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| Institution: | Swansea University |
| Degree level: | Master of Research |
| Degree name: | MSc by Research |
| Supervisor: | Tizaoui, Chedly ; Gerardo, Michael |
| URI: | https://cronfa.swan.ac.uk/Record/cronfa65828 |
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| Abstract: |
This study evaluated the effectiveness of ozonation and activated carbon for the degradation and removal of three main emerging contaminants (ECs) in wastewater; fluoranthene (FLT), di (2- ethyl hexyl) phthalate (DEHP) and cypermethrin (CYM). The effects of key semi-batch ozonation parameters related to gas-liquid mass transfer and reaction kinetics were identified for all contaminants. The degradation rates were evaluated in solutions of DI water, using concentration change of ozone and EC versus time. With an ozone gas concentration of 20 g/m3 NTP, the change in concentration from an initial concentration of 0.05 mg/L over time was measured using HPLC. To decrease by 75 %, it took less than a minute for FLT, two minutes for DEHP and six minutes for CYM. The adsorption of the emerging contaminants with granulated activated carbon (GAC) were evaluated in solutions of DI water at an initial concentration of 1 mg/L. For the decrease in concentration of 60 %, the time for each contaminant varied. For FLT this was achieved in 5 minutes, DEHP was decreased within 20 minutes, and it took CYM 20 minutes to reach this decrease. The effects of ozonation and adsorption onto GAC were also investigated in samples of final wastewater effluent. |
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| Keywords: |
emerging contaminants, wastewater, ozone |
| College: |
Faculty of Science and Engineering |