Fixed-Bed Column Performance of NaOH-Activated Hybrid Adsorbent Derived from Jengkol Peels and Coconut Shells for Cu(II) Removal
DOI:
https://doi.org/10.30736/seaj.v8i1.1324Keywords:
Adsorption, Hybrid adsorbent, Activated carbon, Cu(II), Fixed-bed columnAbstract
This study aims to evaluate the dynamic performance of NaOH-activated hybrid adsorbent derived from jengkol peels and coconut shell for Cu(II) removal in a fixed-bed column. The performance indicators include the adsorption capacity, removal efficiency, and structural characterization. The hybrid adsorbent was characterized using Fourier Transform Infrared Spectroscopy (FTIR) to identify functional groups that play a role in the adsorption process and Scanning Electron Microscope (SEM). The FTIR characterization results showed that the hybrid adsorbent was rich in functional groups such as hydroxyl (-OH), aromatic stretching (C=C), and aliphatic (C-H) groups. Meanwhile, the SEM characterization showed that the surface structure of the adsorbent tended to be honeycomb-shaped with varying pores. The adsorption test was performed in a downflow fixed-bed column under continuous operation with a total operation time of 30 minutes. Under the tested conditions (influent concentration of 100 mg/L and flow rate of 25 mL/min), 95% removal was achieved at 30 min in the fixed-bed column system, corresponding to a dynamic adsorption capacity of 11.3 mg/g. Kinetic modelling indicated that the Thomas and Yoon – Nelson models provided a better fit than the Adam-Bohart model, indicating that adsorption was primarily controlled by surface kinetics rather than intraparticle diffusion. This biomass waste-based hybrid adsorbent has the potential to be an environmentally friendly alternative for treating liquid waste containing Cu ions.
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Lestari, D. I., Yuliansyah, A. T., & Budiman, A. (2022). Adsorption studies of KOH-modified hydrochar derived from sugarcane bagasse for dye removal: Kinetic, isotherm, and thermodynamic study. Communications in Science and Technology, 7(1), 15–22. https://doi.org/10.21924/cst.7.1.2022.669
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Muslim, A., Ellysa, & Said, S. D. (2017). Cu(II) ion adsorption using activated carbon prepared from pithecellobium jiringa (Jengkol) shells with ultrasonic assistance: isotherm, kinetic and thermodynamic studies. Journal of Engineering and Technological Sciences, 49(4), 472–490. https://doi.org/10.5614/j.eng.technol.sci.2017.49.4.4
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Omdehghiasi, H., Yeganeh-Bakhtiary, A., & Korayem, A. H. (2024). Comprehensive study on copper adsorption using an innovative graphene carbonate sand composite adsorbent: Batch, fixed-bed columns, and CFD modeling insights. Chemical Engineering and Processing - Process Intensification, 206(August), 110047. https://doi.org/10.1016/j.cep.2024.110047
Rahmawati, A., Putri, F. A., & Dewati, R. (2024). PEMANFAATAN LIGNIN PADA TEMPURUNG KELAPA SEBAGAI ALTERNATIF BAHAN PEREKAT LIGNIN RESORSINOL FORMALDEHIDA (LRF). 13(1), 73–78. https://doi.org/http://dx.doi.org/10.62870/jip.v13i1.25897
Rara Eka Dyla Putri, Dwi Indah Lestari, Debi Anggun Sari, Zeolita Prabu Putri, & Syariful Maliki. (2025). Potential of Biomass Raw Material for Biochar Production: A Review. Chemical Engineering Journal Storage (CEJS), 5(04), 528–553. https://doi.org/10.29103/cejs.v5i04.23084
Rivera-Arenas, D., Macías-Quiroga, I. F., Dávila-Arias, M. T., Vélez-Upegui, J. J., & Sanabria-González, N. R. (2023). Adsorption of Acid Yellow 23 Dye on Organobentonite/Alginate Hydrogel Beads in a Fixed-Bed Column. Journal of Composites Science, 7(9). https://doi.org/10.3390/jcs7090362
Hendratmoko, A. F., Fauziah, A. N. M., Susiyawati, E., Astriani, D., Nurita, T., Martini, M., ... & Boey, A. (2026). Integrating ChatGPT-driven self-assessment and Debate Based on Inquiry Learning (DBOIL) to enhance students’ argumentation skills: Leveraging AI for quality science learning aligned with SDG 4. In E3S Web of Conferences (Vol. 696, p. 02005). EDP Sciences.
Septaria, K., Asrori, M., Setyo, C. Y., Faridah, F., Anam, M. K., Sukardi, S., & Kholiq, A. (2025). Pemberdayaan Guru Ma'arif melalui Pemanfaatan Deep Learning Engagement Tools untuk Peningkatan Literasi Digital dan Pedagogis. Bhakti Nusantara: Jurnal Pengabdian Kepada Masyarakat, 1(1), 25-39.
Septaria, K., Fatharani, A., & Baihaqi, A. (2025). Are Scrapbooks Able to Increase Tsunami Disaster Literacy? An Analytical Study of Junior High School Students Materials. SEJ (Science Education Journal), 9(2), 115-133. https://doi.org/10.21070/sej.v9i2.1656
Septaria, K., Fatharani, A., Supardi, Z. A. I., Suyono, S., & Regita, M. A. (2025). Pengembangan Sikap Ilmiah Abad 21 Melalui Lembar Kerja Berbasis Teori Pembelajaran Sosial pada Materi Listrik Statis. Jurnal Penelitian Sains dan Pendidikan (JPSP), 5(1), 65-86. https://doi.org/10.23971/jpsp.v5i1.9758
Sho'idah, Y., Septaria, K., & Wulandari, S. A. (2025). Analysis of Student Scientific Communication Based on The Development and Use of Diorama Media Using The Guided Inquiry Model. Reforma: Jurnal Pendidikan dan Pembelajaran, 15(1), 24-47. https://doi.org/10.30736/reforma.v15i1.1207
Hendratmoko, A. F., Puspitarini, S., Budiyanto, M., Rahman, N., Septaria, K., & Marpuah, S. (2025). Think-Aloud Protocol as a Method for Exploring and Understanding the Argumentation Skills of Pre-Service Science Teachers. Prisma Sains: Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram, 13(2), 268-282. https://doi.org/10.33394/j-ps.v13i2.15214
Septaria, K., Fatharani, A., Dewanti, B. A., & Najawa, W. C. (2024). Designing Pirposal-learning based Module integrated with Socio-Scientific Issue to Enhance Students’ Scientific Reasoning Skill. Indonesian Journal of Mathematics and Natural Science Education, 5(2), 122-134. https://doi.org/10.35719/mass.v5i2.162
Septaria, K., Nissak, K., & Wulandari, S. A. (2023). Student Identity and Guided Inquiry Learning in Junior High School Students: A Correlation Analysis. Jurnal Penelitian Pendidikan IPA, 9(10), 8351-8358. https://doi.org/10.29303/jppipa.v9i10.4584
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2026-03-09
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Dwi Indah Lestari, Linda Ekawati, Syariful Maliki, Zeolita Prabu Putri, & Isma Uly Maranggi. (2026). Fixed-Bed Column Performance of NaOH-Activated Hybrid Adsorbent Derived from Jengkol Peels and Coconut Shells for Cu(II) Removal. Science Education and Application Journal, 8(1), 23–33. https://doi.org/10.30736/seaj.v8i1.1324
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