Amelia, Naura Alfi (2026) Pengaruh Jenis dan Dosis Katalis pada Fotokatalis sebagai Post-Treatment Adsorpsi terhadap Escherichia coli dan Tingkat Resistensi Antibiotik Limbah Cair Rumah Sakit. Undergraduate thesis, UPN Veteran Jawa Timur.
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Abstract
Hospital wastewater may contain pathogenic microorganisms, antibiotic-resistant bacteria, and suspended particles that can contaminate the environment if not treated properly. This study aims to analyze the effect of catalyst type and dosage on the removal of Escherichia coli, changes in ampicillin antibiotic resistance levels, and turbidity in an adsorption–photocatalysis system, as well as to compare its performance with a photocatalysis system without adsorption and an adsorption–UV system without a catalyst. The study was conducted using a continuous downflow adsorption–photocatalysis system, consisting of an adsorption reactor containing 675 g of coal-based Granular Activated Carbon (GAC) for pretreatment and a photocatalysis reactor using TiO₂ and ZnO immobilized on 12-mesh stainless steel mesh with dosage variations of 0,2; 0,4, and 0,6 g/L. The parameters analyzed included Escherichia coli, the level of ampicillin antibiotic resistance based on the diameter of the inhibition zone, and turbidity. The results of the study show that the use of a ZnO catalyst yields better performance than TiO₂. Treatment with a ZnO dose of 0,6 g/L produced optimal results, with a total log reduction of Escherichia coli of 1,51 log, an inhibition zone diameter against the antibiotic ampicillin of 20 mm—which falls into the “Sensitive” (S) category, and a total turbidity removal percentage of 94,82%. Furthermore, the adsorption–photocatalysis system demonstrated better performance than the photocatalysis system without adsorption or the adsorption–UV system without a catalyst across all observed parameters. Based on the research results, the combined adsorption–photocatalysis system has the potential to be applied as a hospital wastewater treatment technology. The use of adsorption as a pretreatment step enhances the effectiveness of the photocatalysis process, resulting in better effluent quality.
| Item Type: | Thesis (Undergraduate) | ||||||||
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| Subjects: | T Technology > TD Environmental technology. Sanitary engineering | ||||||||
| Divisions: | Faculty of Engineering > Departement of Environmental Engineering | ||||||||
| Depositing User: | NAURA ALFI AMELIA | ||||||||
| Date Deposited: | 21 Jul 2026 03:31 | ||||||||
| Last Modified: | 21 Jul 2026 06:06 | ||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/55659 |
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