Fenthania, Reany Dwi (2026) Analisis Pengaruh Penambahan Massa HOLEY-rGO Terhadap Sifat Adsorpsi Komposit Magnetic Biochar Ampas Tebu/ NiFe2O4/ HOLEY-rGO Sebagai Adsorben Logam Berat Pb(II) Dan Cd(II). Other thesis, Institut Teknologi Sepuluh Nopember.
![[thumbnail of 5011221024-Undergraduate_Thesis.pdf]](http://repository.its.ac.id/style/images/fileicons/text.png) |
Text
5011221024-Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only Download (6MB) | Request a copy |
Abstract
Aktivitas industri meningkatkan pencemaran air yang mengandung logam berat, seperti Pb(II) dan Cd(II) yang bersifat toksik, persisten, serta berbahaya bagi lingkungan dan kesehatan manusia. Salah satu metode remediasi yang efektif, ekonomis, ramah lingkungan adalah metode adsorpsi. Ampas tebu yang kaya karbon berpotensi sebagai prekursor biochar untuk adsorben logam berat. Namun, biochar konvensional memiliki keterbatasan stabilitas dan pemisahan selama desorpsi sehingga diperlukan modifikasi agar mudah dipisahkan secara magnetik melalui impregnasi FeCl3 untuk membentuk magnetic biochar. Penambahan NiFe2O4 bertujuan meningkatkan stabilitas sifat magnetik, stabilitas termal, dan kimia. Selain itu, penambahan holey-reduced Graphene Oxide (H-rGO) dapat meningkatkan luas permukaan sehingga mendukung peningkatan kapasitas adsorpsi. Variasi penambahan massa holey-rGO dengan variasi 5%, 10%, 15 wt% untuk mengetahui pengaruh variasi terhadap struktur, morfologi, serta sifat adsorpsi Pb(II) dan Cd(II). Karakterisasi material dilakukan dengan XRD, FTIR, SEM/EDX, serta BET, sedangkan AAS untuk analisis kemampuan adsorpsi. Berdasarkan pengujian SEM, menunjukkan NiFe₂O₄ dan H-rGO terdistribusi pada matriks magnetic biochar ampas tebu. Pola XRD menunjukkan puncak kristalin khas NiFe₂O₄, sekitar 2θ ≈ 35°, 62°, dan 64°. Sedangkan dari EDX, penambahan H-rGO menunjukkan adanya pengaruh pada peningkatan karbon. Uji BET menunjukkan H-rGO memiliki luas permukaan spesifik sebesar 474,333 m²/g dengan karakter pori mesopori dan diameter pori rata-rata sebesar 32,85 Å (3,285 nm). Adsorpsi Pb(II) dan Cd(II) oleh komposit MNiH optimum pada penambahan H-rGO sebesar 15 wt%. Kapasitas adsorpsi Pb(II) dan Cd(II) masing-masing sebesar 140,86 mg/g dan 188,68 mg/g. Sedangkan efisiensi adsorpsi Pb(II) dan Cd(II) mencapai 70,43% dan 94,34%. Perbedaan pada tiap variasi yang tidak signifikan diakibatkan sistem hampir mencapai kondisi equilibrium. Secara keseluruhan, komposit MNiH menunjukkan potensi sebagai adsorben logam berat Pb(II) dan Cd(II) untuk aplikasi pengolahan limbah dan lingkungan berkelanjutan.
==================================================================================================================================
Industrial activities increase water pollution containing heavy metals, such as Pb(II) and Cd(II), which are toxic, persistent, and harmful to the environment and human health. One effective, economical, and environmentally friendly remediation method is adsorption. Sugarcane bagasse, which is rich in carbon, has the potential to be used as a precursor for biochar for heavy metal adsorption. However, conventional biochar has limitations in terms of stability and separation during desorption, requiring modification to enable easy magnetic separation through FeCl3 impregnation to form magnetic biochar. The addition of NiFe2O4 aims to improve magnetic stability, thermal stability, and chemical stability. In addition, the addition of holey-reduced Graphene Oxide (H-rGO) can increase the surface area, thereby supporting an increase in adsorption capacity. The addition of holey-rGO was varied at 5%, 10%, and 15 wt% to determine the effect of variation on the structure, morphology, and adsorption properties of Pb²⁺ and Cd²⁺ ions. Material characterization was performed using XRD, FTIR, SEM/EDX, and BET, while AAS was used for adsorption capacity analysis. Based on SEM testing, NiFe₂O₄ and H-rGO were found to be distributed in the magnetic biochar matrix of sugarcane bagasse. The XRD pattern showed the characteristic crystalline peaks of NiFe₂O₄, at approximately 2θ ≈ 35°, 62°, and 64°. Meanwhile, EDX analysis showed that the addition of H-rGO had an effect on increasing the carbon content. The BET test showed that H-rGO had a specific surface area of 474.333 m²/g with mesoporous characteristics and an average pore diameter of 32.85 Å (3.285 nm). The addition of H-rGO to the MNiH composite increases the adsorption of Pb(II) and Cd(II) with optimal conditions at 15 wt%. The adsorption capacities of Pb(II) and Cd(II) are 140.86 mg/g and 188.68 mg/g, respectively. Meanwhile, the adsorption efficiencies of Pb(II) and Cd(II) reach 70.43% and 94.34%. The insignificant differences in each variation were due to the system almost reaching equilibrium conditions. Overall, the MNiH composite shows potential as an adsorbent for heavy metals Pb(II) and Cd(II) for waste treatment and sustainable environmental applications.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Adsorpsi, Ampas Tebu, Holey-rGO, NiFe₂O₄, Logam Berat, Adsorption, Heavy Metal, Holey-rGO, NiFe₂O₄, Sugarcane Bagasse |
| Subjects: | Q Science Q Science > QC Physics Q Science > QC Physics > QC162 Adsorption and absorption |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | Reany Dwi Fenthania |
| Date Deposited: | 21 Jan 2026 05:42 |
| Last Modified: | 21 Jan 2026 05:42 |
| URI: | http://repository.its.ac.id/id/eprint/129925 |
Actions (login required)
 |
View Item |