Putri, Aurellia Savira and Rahmadia, Alvira Rizqi (2026) Pengaruh Variasi Rasio Pada Sintesis Komposit Hydrochar Teraktivasi-Zeolite A Dengan Menggunakan Metode Hydrothermal Untuk Aplikasi Adsorpsi Heavy Metal Pb Dan Cd. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Limbah cair industri tekstil berpotensi mengandung logam berat berbahaya, seperti timbal (Pb) dan kadmium (Cd), sehingga diperlukan metode pengolahan yang efektif dan berkelanjutan. Penelitian ini bertujuan untuk mensintesis komposit Activated Hydrochar–Zeolite A (AHC-Z) berbasis limbah serbuk kayu sengon menggunakan metode hidrotermal serta mengevaluasi pengaruh variasi rasio AHC-Z 0, 25, 50, 75, dan 100 terhadap karakteristik material, kinerja adsorpsi, kinetika, isoterm, dan kemampuan regenerasi dalam menghilangkan ion Pb²⁺ dan Cd²⁺ dari larutan. Hasil karakterisasi FTIR, XRD, SEM, dan BET menunjukkan bahwa komposit AHC-Z memiliki karakteristik gabungan antara gugus fungsi aktif dan struktur berpori dari Activated Hydrochar serta struktur aluminosilikat kristalin dari Zeolite-A. Luas permukaan spesifik meningkat dari 168,276 m²/g pada hydrochar menjadi 390,925 m²/g setelah aktivasi dan mencapai nilai tertinggi sebesar 549,816 m²/g pada komposit AHC-Z 50. Hasil adsorpsi menunjukkan bahwa peningkatan proporsi Zeolite-A cenderung menurunkan efisiensi penyisihan dan kapasitas adsorpsi. AHC-Z 100 menghasilkan kinerja terbaik dengan removal efficiency sebesar 97,07% untuk Pb²⁺ dan 82,24% untuk Cd²⁺, serta kapasitas adsorpsi masing-masing sebesar 25,53 mg/g dan 20,58 mg/g. Analisis kinetika menunjukkan bahwa proses adsorpsi Pb²⁺ dan Cd²⁺ lebih sesuai dengan model Pseudo-Second-Order (PSO), dengan nilai R² sebesar 0,992–0,999, yang mengindikasikan dominasi proses kemisorpsi. Analisis isoterm menunjukkan bahwa adsorpsi Pb²⁺ mengikuti model Freundlich, sedangkan Cd²⁺ lebih sesuai dengan model Langmuir. Uji regenerasi termal menunjukkan bahwa komposit AHC-Z masih dapat digunakan kembali, meskipun terjadi penurunan kinerja adsorpsi setelah regenerasi. Secara keseluruhan, komposit AHC-Z berbasis limbah serbuk kayu sengon berpotensi dikembangkan sebagai adsorben alternatif untuk pengolahan limbah yang mengandung logam berat, terutama dengan komposisi yang kaya Activated Hydrochar.
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Textile industry wastewater potentially contains hazardous heavy metals, such as lead (Pb) and cadmium (Cd), necessitating effective and sustainable treatment methods. This study aimed to synthesize an Activated Hydrochar–Zeolite A (AHC-Z) composite from sengon wood sawdust waste using a hydrothermal method and to evaluate the effect of AHC-Z ratios of 0, 25, 50, 75, and 100 on the material characteristics, adsorption performance, kinetics, isotherms, and regeneration capability for the removal of Pb²⁺ and Cd²⁺ ions from aqueous solutions. The results of FTIR, XRD, SEM, and BET characterization showed that the AHC-Z composites possessed combined characteristics of the active functional groups and porous structure of Activated Hydrochar and the crystalline aluminosilicate structure of Zeolite-A. The specific surface area increased from 168.276 m²/g for hydrochar to 390.925 m²/g after activation and reached the highest value of 549.816 m²/g for the AHC-Z 50 composite. The adsorption results showed that increasing the proportion of Zeolite-A tended to decrease the removal efficiency and adsorption capacity. AHC-Z 100 exhibited the best performance, with removal efficiencies of 97.07% for Pb²⁺ and 82.24% for Cd²⁺, as well as adsorption capacities of 25.53 mg/g and 20.58 mg/g, respectively. Kinetic analysis showed that the adsorption processes of Pb²⁺ and Cd²⁺ were better described by the Pseudo-Second-Order (PSO) model, with R² values ranging from 0.992 to 0.999, indicating the dominance of chemisorption. Isotherm analysis showed that Pb²⁺ adsorption followed the Freundlich model, whereas Cd²⁺ adsorption was better described by the Langmuir model. Thermal regeneration tests showed that the AHC-Z composite could still be reused, although a decrease in adsorption performance occurred after regeneration. Overall, the AHC-Z composite derived from sengon wood sawdust waste has potential as an alternative adsorbent for the treatment of heavy metal-containing wastewater, particularly with a composition rich in Activated Hydrochar.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Komposit Hydrochar-Zeolite A, Logam Berat, Metode Hydrothermal, Heavy Metals, Hydrochar-Zeolite A Composite, Hydrothermal Method. |
| Subjects: | T Technology > TP Chemical technology > TP155.7 Chemical processes. T Technology > TP Chemical technology > TP159.M6 Zeolites |
| Divisions: | Faculty of Vocational > 24305-Industrial Chemical Engineering Technology |
| Depositing User: | Aurellia Savira Putri |
| Date Deposited: | 28 Jul 2026 07:20 |
| Last Modified: | 28 Jul 2026 07:20 |
| URI: | http://repository.its.ac.id/id/eprint/138749 |
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