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All Journal PROSIDING SEMINAR KIMIA KOVALEN: Jurnal Riset Kimia
Farlianti, Resma Lita
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Chemical Engineering, Chemistry & Bioengineering Chemistry

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REVIEW ARTIKEL: BEBERAPA METODE MIKROENKAPSULASI ADSORBEN BERBASIS ALGINAT DAN APLIKASINYA UNTUK MENGHILANGKAN ION LOGAM DALAM LARUTAN BERAIR Farlianti, Resma Lita; Panggabean, Aman Sentosa; Lianasari, Ika Yekti
PROSIDING SEMINAR KIMIA Vol 3 No 2 (2025): Prosiding SNKT 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Alginate is a natural polysaccharide consisting of mannuronic acid and guluronic acid connected via glycosidic bonds. Alginate has properties of biocompatibility, biodegradability, and reports in nature that make it attractive as a base material in microencapsulation applications. Microencapsulation is a technology used to coat active ingredients in small particles with the aim of increasing stability, solubility, and controlling the release of active substances. This article aims to review research results related to various methods of alginate microencapsulation as an adsorbent taken from several scientific articles. This literature review shows that encapsulation methods are divided into two categories, namely physical and chemical methods as well as several technologies such as coacervation, spray drying, extrusion, freeze drying and layer-by-layer coating. Alginate-based adsorbents, especially modified ones, show a better capacity to absorb heavy metals than pure alginate with adsorption capacities ranging from 0,025 mg/g to 416,67 mg/g. The adsorption efficiency is influenced by the physicochemical properties of the adsorbent and external conditions such as pH and metal ion concentration. With its various advantages, alginate-based microencapsulation has great potential for application in various industrial fields, especially in air purification, pharmaceuticals and nutrition. Keywords : Alginate, Microencapsulation, Adsorbent, Metal
Preconcentration of Cr (VI) Using Ca-Alginate-EDTA Microcapsules in a Column System for UV-Vis Spectrophotometric Analysis Lianasari, Ika Yekti; Panggabean, Aman Sentosa; Farlianti, Resma Lita
KOVALEN: Jurnal Riset Kimia Vol. 11 No. 2 (2025): December Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2025.v11.i2.17918

Abstract

This study introduces optimized Ca-Alg-EDTA microcapsules specifically designed as a high-performance column filler for the preconcentration and sensitive detection of toxic Cr(VI) in aquatic systems. Monitoring Cr(VI) at trace levels is critical due to its high toxicity and environmental persistence. Unlike previous alginate-based sorbents, this work focuses on a synergistic EDTA integration within a column-switching framework to enhance retention efficiency (74.73 %) and capacity (0.3995 mg/g). Analytical validation using UV-Vis spectrophotometry demonstrated excellent linearity (R2 = 0.9995) with a low detection limit of 0.014 mg/L, ensuring reliability for samples with minimal analyte concentrations. The method’s robustness was confirmed through Mahakam River water analysis, yielding a 93.05 % recovery in compliance with AOAC 2002 standards. This optimized microencapsulation approach provides a cost-effective and sustainable solution for routine environmental monitoring of heavy metal contamination.
Co-Authors Aman Sentosa Panggabean Lianasari, Ika Yekti