Sintesis dan Karakterisasi Tempurung Kemiri sebagai Material Elektroda Capacitive Deionization (CDI)

Margaretha, Azarine Gita (2026) Sintesis dan Karakterisasi Tempurung Kemiri sebagai Material Elektroda Capacitive Deionization (CDI). Other thesis, INSTITUT TEKNOLOGI SEPULUH NOPEMBER.

Text 5001221148-Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only Download (2MB) | Request a copy

Abstract

Tempurung kemiri merupakan limbah biomassa yang berpotensi dimanfaatkan sebagai bahan baku karbon aktif karena memiliki kandungan karbon yang tinggi. Penelitian ini bertujuan untuk menganalisis pengaruh variasi komposisi karbon tempurung kemiri dan karbon aktif terhadap karakteristik serta kinerja elektrokimia elektroda untuk aplikasi Capacitive Deionization (CDI). Elektroda dibuat dengan variasi komposisi 18:2, 16:4, dan 14:6 menggunakan PVA sebagai perekat dan aquades sebagai pelarut, kemudian dihomogenkan dan dipanaskan pada suhu 900°C sebelum dilakukan karakterisasi. Pengujian meliputi Fourier Transform Infrared (FTIR), uji konduktivitas listrik, Cyclic Voltammetry (CV), dan Electrochemical Impedance Spectroscopy (EIS). Hasil FTIR menunjukkan terbentuknya gugus fungsi =CH, C–O, C=C, O–H, dan C–O aromatik yang menandakan terbentuknya struktur karbon aktif. Hasil pengujian menunjukkan bahwa variasi komposisi karbon berpengaruh terhadap karakteristik dan kinerja elektroda. Komposisi 16:4 menghasilkan konduktivitas listrik tertinggi sebesar 8885,962 μS/cm dan kapasitansi spesifik tertinggi sebesar 258 F/g, sedangkan komposisi 14:6 menghasilkan koefisien difusi ion Na+ tertinggi sebesar 0,12 cm2/s. Hasil tersebut menunjukkan bahwa penambahan karbon aktif mampu meningkatkan konduktivitas listrik, kapasitansi spesifik, dan kemampuan difusi ion pada elektroda. Dengan demikian, karbon aktif berbasis tempurung kemiri berpotensi digunakan sebagai material elektroda pada sistem CDI serta menjadi alternatif pemanfaatan limbah biomassa yang bernilai tambah dan ramah lingkungan.
======================================================================================================================================
Pecan shells are biomass waste that has the potential to be used as raw materials for activated carbon because it has a high carbon content. This study aims to analyze the effect of variations in the composition of hazelnut shell carbon and activated carbon on the characteristics and electrochemical performance of electrodes for Capacitive Deionization (CDI) applications. The electrodes are made with composition variations of 18:2, 16:4, and 14:6 using PVA as an adhesive and aquades as solvents, then homogenized and heated at 900°C before characterization. Testing includes Fourier Transform Infrared (FTIR), electrical conductivity test, Cyclic Voltammetry (CV), and Electrochemical Impedance Spectroscopy (EIS). The FTIR results showed the formation of functional groups =CH, C–O, C=C, O–H, and aromatic C–O which indicated the formation of activated carbon structures. The test results showed that variations in carbon composition had an effect on the characteristics and performance of the electrodes. The 16:4 composition produces the highest electrical conductivity of 8885.962 μS/cm and the highest specific capacitance of 258 F/g, while the 14:6 composition produces the highest diffusion coefficient of Na⁺ ions of 0.12 cm²/s. These results show that the addition of activated carbon is able to improve the electrical conductivity, specific capacitance, and ion diffusion ability of the electrode. Thus, activated carbon based on pecan shells has the potential to be used as an electrode material in the CDI system and as an alternative to the use of biomass waste that is value-added and environmentally friendly.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Capacitive Deionization, Elektroda, Tempurung Kemiri, Karbon Aktif, Capacitive Deionization, Electrodes, Candlenut Shells, Activated Carbon.a
Subjects:	Q Science > QC Physics > QC100.5 Measuring instruments (General) Q Science > QC Physics > QC173.4.C63 Composite materials
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45201-(S1) Undergraduate Thesis
Depositing User:	Azarine Gita Margaretha
Date Deposited:	04 Aug 2026 01:15
Last Modified:	04 Aug 2026 01:15
URI:	http://repository.its.ac.id/id/eprint/135842

Actions (login required)

View Item