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All Journal Jurnal Kartika Kimia Jurnal Riset Sains dan Kimia Terapan Journal of Community Service and Empowerment Jurnal Kesehatan Tambusai Indonesian Journal of Chemical Studies (Indones. J. Chem. Stud.) JPM-AKA al Kimiya : Jurnal Ilmu Kimia dan Terapan Babakti : Journal of Community Engangement
Elva Stiawan
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Dentistry Education Engineering Health Professions Medicine & Pharmacology Nursing Public Health Social Sciences Other

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Journal : Jurnal Riset Sains dan Kimia Terapan

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Column Study and Desorption Performance of Coffee Biomass-Calcium-Alginate Beads to Remove Pb²⁺ Ions from Aqueous Solutions Hanifah, Sarina; Rusnadi, Rusnadi; Stiawan, Elva; Widianti, Riskia Chandra
Jurnal Riset Sains dan Kimia Terapan Vol. 11 No. 1 (2025): Jurnal Riset Sains dan Kimia Terapan, Volume 11 Nomor 1, Juni 2025
Publisher : Program Studi Kimia Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JRSKT.111.01

Abstract

Heavy metal pollution, particularly by lead (Pb²⁺), poses a serious environmental threat and can significantly impact human health. This study aims to evaluate the performance of an adsorbent composed of a mixture of coffee waste and calcium alginate (Coffee-Calcium-Alginate/CCA beads) in removing Pb²⁺ ions through column experiments, as well as to assess the desorption efficiency and reusability of the adsorbent. Column studies were conducted at 1 ppm Pb2+ ions initial concentration, a flow rate of 2.2 mL/min, using a column with a length of 10 cm and a diameter of 7 mm to determine the breakthrough time of the adsorbate, while desorption was performed using HNO₃ to evaluate the efficiency of Pb²⁺ ions release and the potential for adsorbent reuse. The results demonstrated that the CCA adsorbent was able to retain high efficiency over two adsorption–desorption cycles, with desorption efficiencies of 96.35% and 86.64%. The desorption mechanism involves protonation of carboxylate groups and competition between H⁺ and Pb²⁺ ions at the active sites. Overall, CCA beads exhibit promising potential as an effective and reusable adsorbent for treating water contaminated with heavy metals. Future research could explore the effects of varying initial Pb²⁺ ions concentrations and column height to gain a more comprehensive understanding of desorption dynamics within the column system. Keywords: adsorption, coffee biomass, calcium alginate, Pb2+, leads
Co-Authors Ade Heri Mulyati, Ade Heri Al Fajry, Zaidan Ananda, Dea Dwi Anggi Khairina H H ANGGI KHAIRINA HANUM HASIBUAN ARIYANTI, DITA Atmadi Atmadi, Atmadi Aura Puja Lestari Azimatur Rahmi Bolilanga, Patricya Inggrid Wilhelmina Dewi Anggraini S Fahri, Mirad Fajry, Zaidan Al Gita, Mutiara Gunaryo Gunaryo, G. Gunaryo, Gunaryo Hanifah, Sarina Hijrianisa, Alya Kuntjahjono, Mayang Fauziah Putri Kurniadi, Tedi Lestari, Aura Puja Lubis, Astrid Blandina Cynthia M. Sulthon Nurharmansyah P Mayori, Ersha Mentari Zikri Anty Minandre Wiratama Mirad Fahri Moch. Rizki Fajri MS, M. Adrian Rezki Anggara Mulyawati, Ade Heri Nurrosyid, Naufan Prasojo, Agus Eko Prawira, Ajeng Arimby Setyaningsih Putri Yan Putra, M. Sulthon Nurharmansyah Putri, Riyanti Rachmayanti, Yanti Rahmat Basuki Renta, Hotma Riskia Chandra Widianti Rusnadi Rusnadi Sapulete, Sherly Sari, Dini Rusfita Septaningsih, Dewi Siti Nurhalimah Sutomo Sutomo Tayon, Felix Tedi Kurniadi Tiarani, Sekar Ilma Wiana, Regita Andriani Widyatama, Awang Widyatama, Satria Aqilla Xaviera, Allodya Nadra Yunita, Amalia Yusuf Bramastya A Yusuf Bramastya Apriliyanto ZEILY NURACHMAN