KOMBINASI KOAGULAN POLY ALUMINIUM CHLORIDE DAN KITOSAN DALAM MENURUNKAN MIKROPLASTIK PADA AIR LINDI

Agdy, Hasna Aqilah Putri Agdy (2026) KOMBINASI KOAGULAN POLY ALUMINIUM CHLORIDE DAN KITOSAN DALAM MENURUNKAN MIKROPLASTIK PADA AIR LINDI. Undergraduate thesis, UPN Veteran Jawa Timur.

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Abstract

Leachate from final processing sites (TPA) has the potential to pollute the environment because it contains organic compounds, suspended solids, and microplastics. This study aims to analyze the effect of varying doses of polyaluminum chloride (PAC) coagulant and chitosan on the reduction of microplastics, COD, and TSS in leachate from the Randegan TPA. The method used was coagulation-flocculation with a jar test using variations in single coagulant doses of 150 mg/L PAC, 150 mg/L chitosan, and a combination of PAC and chitosan with three variations of chitosan solvents: CH₃COOH (control), 3000 mg/L HCl, and 4000 mg/L HCl. The parameters analyzed included microplastic identification using FTIR and physical testing, as well as COD and TSS measurements. The results showed that the combination of PAC and chitosan at the optimum dose was able to reduce microplastics by up to 78% in sample code D3 (PAC 90 mg/L + chitosan 60 mg/L with HCl 3000 mg/L), COD by 80% in sample code C1 (PAC 60 mg/L + chitosan 90 mg/L with CH₃COOH), and TSS by 91% in sample code D3. FTIR identification showed that the types of microplastic polymers detected were nylon, polypropylene (PP), and polyethylene terephthalate (PETE), with the dominant forms being fibers, fragments, and films. Fragment and film types of microplastics are more easily degraded than fibers due to their smaller size and larger surface area. Microplastic reduction occurs through charge neutralization, adsorption, and sweep flocculation mechanisms. Keywords: Microplastics, Leachate, Coagulation–flocculation, PAC, Chitosan

Item Type:

Thesis (Undergraduate)

Contributors:

Contribution	Contributors	NIDN/NIDK	Email
Thesis advisor	Cahyonugroho, Okik Hendriyanto	NIDN	okikhc@upnjatim.ac.id
Thesis advisor	Sitogasa, Praditya Sigit Ardisty	NIDN0001109008	praditya.s.tl@upnjatim.ac.id

Subjects:

T Technology > TD Environmental technology. Sanitary engineering

Divisions:

Faculty of Engineering > Departement of Environmental Engineering

Depositing User:

Hasna Aqilah Putri Agdy

Date Deposited:

23 Feb 2026 06:33

Last Modified:

23 Feb 2026 06:33

URI:

https://repository.upnjatim.ac.id/id/eprint/49670