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All Journal J-Sil (Jurnal Teknik Sipil dan Lingkungan) Torani Journal of Fisheries and Marine Science JURNAL KESEHATAN LINGKUNGAN (Journal of Environmental Health) Jurnal Sains & Teknologi Lingkungan Chemistry Indonesian Journal of Chemical Research Equilibrium Journal of Chemical Engineering Cerdika: Jurnal Ilmiah Indonesia J-Sil (Jurnal Teknik Sipil dan Lingkungan)
Shabrina, Husna Muizzati
Universitas Pembangunan Nasional Veteran Yogyakarta
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Materials Science & Nanotechnology Public Health Social Sciences Transportation

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Journal : Equilibrium Journal of Chemical Engineering

 1 
Immobilization of Coal Fly Ash in Alginate Beads for Adsorption of Fe (III) Ions Fauzan Irfandy; Husna Muizzati Shabrina; Indriana Lestari; Heni Anggorowati; Perwitasari Perwitasari
Equilibrium Journal of Chemical Engineering Vol 7, No 2 (2023): Volume 7, No 2 December 2023
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v7i2.79973

Abstract

Abstract. Various industrial, agricultural, household, mining, smelting, and chemical industrial activities can generate waste containing heavy metals such as Fe(III). Fly ash has the potential as an effective adsorbent to capture heavy metals in wastewater. This study aims to immobilize coal fly ash in alginate beads for the adsorption of Fe(III) ions from synthetic waste solution. To test the adsorption capability of fly ash-alginate beads was performed by varying the contact time (1-24 hours), the mass of fly ash-alginate beads (5, 15, 35, 45, and 55 grams), and the initial concentration of Fe (III) ions at 6, 8, and 10 ppm. The determination of the concentration after adsorption was done using a UV-Vis spectrophotometer. The results showed that fly ash-alginate beads were able to remove Fe(III) ions up to 68.60% at a bead mass of 55 g, ion concentration of 10 ppm, and the equilibrium contact time was reached after 5 hours. The analysis results indicated that the adsorption mechanism followed the Freundlich isotherm model due to the heterogeneous surface exhibited.Keywords:Fly ash, Fe (III), Beads, Adsorption, Freundlich
The Influence of Aqua Regia Usage in the Leaching and Extraction Process of Silica from Coal Fly Ash Perwitasari Perwitasari; Heni Anggorowati; Uli Ulfa; Husna Muizzati Shabrina; Agus Adhiatma
Equilibrium Journal of Chemical Engineering Vol 8, No 1 (2024): Volume 8, No 1 July 2024
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v8i1.86969

Abstract

Waste from coal-burning power stations and other sectors that rely on coal as a source of energy is one of the environmental issues. Fly ash obtained from burning coal causes pollution in the surrounding environment. Subsequently, a great deal of study was conducted on the application of flying ash coal. Among the techniques for making use of the flying ash of coal is the extraction of silica. This study carried out silica leaching using Aqua Regia (a combination of HCl and HNO₃) with various ratios of 1:1, 1:3, and 3:1. The leaching process was carried out at varying temperatures of 30, 45, 60, 75, and 90 °C, with a leaching time of 1 and 2 hours. Precipitates containing silica were analyzed for their levels using XRF. The results of the study show that the ratio HCl:HNO₃ 3:1 is able to extract more silica than other solvent ratios.Keywords:Silica, Fly Ash, Leaching, HCl, HNO₃
Co-Authors Adhina, Ufiya Cahaya Afifah, Nuha Amiratul Agus Adhiatma Andri Saputra Aningtyas, Vebri Barti Setiani Muntalif Barti Setiani Muntalif Faradilla, Febrica Citra Fauzan Irfandy Heni Anggorowati Inat Shani Fathuna Indriana Lestari Mayrina Firdayati Muhammad Amin Perwitasari Perwitasari Perwitasari Perwitasari Pratiwi, Distika Prayogo, Wisnu Ratnaningsih, Wahyu Sobirin, Ahmad Uli Ulfa Uma Fadzilia Arifin, Uma Fadzilia Yudhistira Saraswati