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All Journal The Journal of Pure and Applied Chemistry Research Jurnal Kartika Kimia EKOLOGIA : Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup Jurnal Ilmiah Farmasi Farmasyifa Jurnal Riset Sains dan Kimia Terapan Jurnal Abdimas Kartika Wijayakusuma Jurnal Farmasi Klinik dan Sains International Journal of Applied Research and Sustainable Sciences (IJARSS) Serambi Engineering
Rusnadi Rusnadi
Institut Teknologi Bandung
Religion Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Social Sciences Other

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Adsorption of Pb(II) Ions Using Residual Extract of Alginate from Sargassum sp. Rusnadi; Wibisono, Eucharistein Gratia; Dhiya Haniifa Putri; Andi Radhiatul Hilmah Alimin
Jurnal Serambi Engineering Vol. 10 No. 1 (2025): Januari 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Lead ion is one of the environment’s main pollutants. Lead ions have carcinogenic and toxic effects and, therefore dangerous to the human body.  This research was conducted to determine the ability of alginate extraction residue from Sargassum sp.’s ability as lead ion adsorbent. The characterization of this adsorbent was done using FTIR (Fourier Transform Infrared) and SEM-EDS (Scanning Electron Microscopy-Energy Dispersive Spectroscopy). The optimization of this adsorbent was carried out toward some parameters, such as pH, adsorbent’s mass, Pb(II)’s initial concentration, and contact time. The result showed that the optimum condition can be reached if the contact between the adsorbent and adsorbate was done using 0,025 grams of adsorbent in 25 ml of pH 5 Pb(II) (200 ppm) solution, using 5 minutes contact time.  The adsorption process follows the Langmuir isotherm model with a maximum capacity of 416,6667 mg.g-1. The result of the kinetics study showed that the adsorption follows a pseudo-second-order kinetics whilst the thermodynamics study showed that the adsorption process is exothermic with the value of ΔHᵒ = -4,51 kJ.mol-1,  and the value of ΔSᵒ = -0,038  kJ.mol-1.K-1.
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 Amila Gadri Anak Agung Istri Sri Wiadnyani Andi Radhiatul Hilmah Alimin Arie Hardian Bachri Amran Dhiya Haniifa Putri Elva Stiawan Handajaya Rusli, Handajaya Hanifah, Sarina Hilda Aprilia, Hilda Hulqi Mila Haili Humairani Rahman M. Bachri Amran Muhammad Bachri Amran Muhammad Iqbal Muhammad Yudhistira Azis Rahayu, Rizky Sri Riesma Azhar Falahul Alam Riskia Chandra Widianti Safitri, Irin Sarina Hanifah Silmi Nur'asni Yulianti Sri Dewi Lestari, Sri Dewi Thoriq, Thoriq USWATUN HASANAH Wibisono, Eucharistein Gratia Yani Lukmayani