Artika, Andhini Chindy (2025) Pemanfaatan Bioadsorben Tempurung Kelapa Menyisihkan Nikel dalam Limbah Industri Electroplating. Undergraduate thesis, UPN VETERAN JAWA TIMUR.
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Abstract
Nickel (Ni) pollution from the electroplating industry poses a toxic risk to aquatic ecosystems and human health. This study evaluates the effectiveness of coconut shell bioadsorbents in removing nickel ions through adsorption using a kinetic approach. The bioadsorbent was carbonised and activated with H₃PO₄, with characterisation showing an ash content of 3.6%, moisture content of 2.3%, volatile matter content of 7.78%, and fixed carbon of 86.32%. Functional groups were identified using Fourier Transform Infrared Spectroscopy (FTIR). Adsorption was carried out in batches with variations in adsorbent mass, contact time, and stirring speed, while the data were modelled using first-order and second-order kinetics to determine the rate and mechanism of adsorption. Optimum conditions were obtained at 100 rpm and 45 minutes with a nickel removal efficiency of 80%. The results showed that the second-order kinetic model provided the best fit (R² = 0.987), indicating that adsorption occurred through chemical interaction. FTIR analysis showed a shift and change in intensity in the –OH and –COOH functional groups after adsorption, confirming the involvement of active groups in the nickel ion adsorption process. Thus, coconut shells are effective and have the potential to be used as environmentally friendly bioadsorbents for the treatment of industrial wastewater containing heavy metals. Keywords: Adsorption Kinetics, Bioadsorbent, Coconut Shell, Electroplating Wastewater, Fourier Transform Infrared Spectroscopy (FTIR), Nickel (Ni)
| 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: | Andhini Chindy Artika | ||||||||||||
| Date Deposited: | 12 Sep 2025 08:00 | ||||||||||||
| Last Modified: | 12 Sep 2025 08:00 | ||||||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/43023 |
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