Zevhiana, Acbellita Ayu (2024) Penurunan Nitrat dan COD pada Air Limbah Domestik dengan Air-Lift Photobioreactor (AL-PBR) Berbasis Mikroalga. Undergraduate thesis, UPN Veteran Jawa Timur.
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Abstract
Domestic wastewater contains nutrients and organic matter such as high levels of Nitrate and COD, which are harmful to aquatic environments, necessitating wastewater treatment. This study focuses on reducing Nitrate and COD parameters in domestic wastewater using an AL-PBR based on Chlorella vulgaris microalgae with variations in wastewater concentration (control; 20%; 40%; 60%; and 80%) and LED light wavelengths or colors (white; red; green; and blue). The results showed a decrease in pollutants after a 5-day (120-hour) treatment process. The highest Nitrate and COD removal efficiencies for each light wavelength at an 80% wastewater concentration were achieved with white (λ=380-750 nm); red (λ=700 nm); green (λ=510 nm); and blue (λ=440 nm) light colors. The Nitrate removal percentages were 87.56%; 72.15%; 93.64%; and 97.49%, respectively, and the COD removal percentages were 73.88%; 55.21%; 76.50%; and 79.12%, respectively. The variation in light wavelengths affected the growth rate of Chlorella vulgaris microalgae. The highest to lowest microalgae growth occurred under blue, green, white, and red light variations, with maximum cell densities in each light variation being 819 x 10⁴ cells/ml; 711 x 10⁴ cells/ml; 672 x 10⁴ cells/ml; and 355 x 10⁴ cells/ml, respectively.
| Item Type: | Thesis (Undergraduate) | ||||||||
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| Subjects: | L Education > L Education (General) Q Science > Q Science (General) Q Science > QH Natural history Q Science > QR Microbiology T Technology > TD Environmental technology. Sanitary engineering |
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| Divisions: | Faculty of Engineering > Departement of Environmental Engineering | ||||||||
| Depositing User: | ACBELLITA AYU ZEVHIANA | ||||||||
| Date Deposited: | 29 May 2024 04:14 | ||||||||
| Last Modified: | 29 May 2024 04:14 | ||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/23160 |
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