Pasadzani, Azkafia Alkafi (2026) Analisis Kelimpahan dan Karakteristik Mikroplastik untuk Menghitung Kecepatan Pengendapan dan Korelasinya dengan Parameter Lingkungan pada Kali Surabaya. Undergraduate thesis, UPN Veteran Jawa Timur.
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Abstract
Kali Surabaya is a tributary of the Brantas River that serves as a source of raw water for community activities and needs, but has also become a discharge route for industrial and domestic waste that potentially causes microplastic pollution. Microplastics are particles measuring <5 mm that are difficult to degrade, thereby causing negative impacts on the environment. This study aims to analyze the abundance and characteristics of microplastics (shape, color, size, and polymer type) in the water column and sediment of Kali Surabaya, to analyze their correlation with water quality parameters and sediment grain size, and to calculate the average settling velocity of microplastic particles based on particle size and polymer density. The research consisted of observations at five stations, with samples collected using a purposive sampling technique, followed by in-situ testing and laboratory analysis, including polymer type identification using FTIR spectroscopy. The results show that the dominant microplastic shape found in both the water column and sediment was Fiber, with the most frequently found particle size ranging from 1-3 mm, and the identified polymer types included Polyester, Polytetrafluoroethylene (PTFE), Fiberglass, and Polyacrylonitrile (PAN). pH, temperature, and Dissolved Oxygen (DO) parameters showed a negative correlation with microplastic abundance, while Total Suspended Solids (TSS) showed the strongest positive correlation. The sandy sediment fraction was positively correlated with microplastics measuring 1-3 mm, while the silt fraction was positively correlated with smaller particles. In addition, particle shape influenced settling velocity (Vs), with the Fragment shape producing the highest settling velocity, followed by Film, then Fiber.
| 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: | Azkafia Alkafi Pasadzani | ||||||||
| Date Deposited: | 01 Sep 2026 04:25 | ||||||||
| Last Modified: | 01 Sep 2026 04:58 | ||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/59305 |
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