Kosim, Anggiany Rizky (2025) Penurunan Kadar Ni2+ pada Limbah Elektroplating dengan menggunakan Adsorben Kitosan-Karbon Aktif. Undergraduate thesis, UPN "Veteran" Jawa Timur.
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Abstract
The removal of Ni2+ from electroplating process wastewater can be effectively accomplished using chitosan modified with activated carbon through an adsorption process. This research aims to develop adsorbents with varying mass ratios of chitosan to activated carbonand assess their efficacy in reducing Ni2+ concentrations, the impact of contact time on this reduction. Adsorbents were prepared by crosslinking protonated chitosan with tripolyphosphate and incorporating activated carbon in the following ratios: 0.5:1.5, 0.75:1.25, 1:1, 1.25:0.75, and 1.5:0.5 grams per gram. The adsorption process involved contacting 500 milliliters of electroplating process wastewater with 2 grams of adsorbent for various durations of 15 to 75 minutes. Ni2+ concentration in the filtrate was analyzed using Atomic Absorption Spectroscopy (AAS), and the adsorbent was characterized with Scanning Electron Microscopy and Energy Dispersive X-ray Spectroscopy (SEM-EDX). The optimal conditions for Ni2+ removal occurred with a chitosan/activated carbon mass ratio of 0.5:1.5 grams per gram and a contact time of 60 minutes, resulting in a final Ni²⁺ concentration of 2.17 mg/L, an adsorption efficiency of 98.92%, and an adsorption capacity of 49.46 mg/g. These findings demonstrate the effectiveness of chitosan/activated carbon composites in treating Ni2+contamination in electroplating wastewater, offering a sustainable environmental solution.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Subjects: | T Technology > TP Chemical technology > TP155 Chemical engineering |
| Divisions: | Faculty of Engineering > Departement of Chemical Engineering |
| Depositing User: | Anggiany Rizky Kosim |
| Date Deposited: | 03 Nov 2025 04:17 |
| Last Modified: | 03 Nov 2025 04:17 |
| URI: | https://repository.upnjatim.ac.id/id/eprint/45982 |
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