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All Journal Jurnal Jejaring Matematika dan Sains Venn: Journal of Sustainable Innovation on Education, Mathematics and Natural Sciences
Lamuru, Afrianti S
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Biochemistry, Genetics & Molecular Biology Chemistry Education Environmental Science Mathematics Physics Other

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Pengaruh Ukuran Partikel Serbuk Kalsium Oksida (CaO) Sebagai Adsorben Untuk Meningkatkan Kadar Etanol Teknis: Pengaruh Ukuran Partikel Serbuk Kalsium Oksida (CaO) Sebagai Adsorben Untuk Meningkatkan Kadar Etanol Teknis Lamuru, Afrianti S; Mahirullah; Juita , Sri
Jurnal Jejaring Matematika dan Sains Vol. 5 No. 1 (2023): Jurnal Jejaring Matematika dan Sains
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jjms.2023.v5.i1.801

Abstract

The research studied method of increasing technical alcohol levels by using Calcium Oxide (CaO) adsorbent in adsorption distillation. Alcohol can be used as an alternative fuel or fuel additive to increase the octane number of the fuel so as to produce low carbon emissions. So, it is very important alcohol purification. One method for purifying alcohol is adsorption distillation. The purpose of this study was to determine the effect of the particle size of CaO adsorbent powder in the adsorption distillation method. The ethanol used as feed is ethanol of 70% and 96%. The results showed the increase in ethanol content with a particle size of 100 mesh, 150 mesh and 200 mesh, the highest final ethanol content was obtained at a particle size of 200 mesh, where at an initial concentration of 70% ethanol after the adsorption process increased to 88.50%, while the ethanol content the lowest was obtained at 100 mesh with a final content of 87%. Likewise, the initial concentration of 96% ethanol after the adsorption process increased to 98.25% at a particle size of 200 mesh, while the lowest concentration was obtained at a particle size of 100 mesh with a final grade of 97.90%. From the results of the study showed that particle size greatly influences the increase in ethanol content. The smaller the particle size used, the greater the adsorption speed. The smaller the particle size, the greater the surface area, so that more water is absorbed and the resulting ethanol concentration is greater.
Pengaruh Pencampuran Alginat Dan Serbuk Kalsium Oksida (CaO) Adsorben Untuk Peningkatan Kadar Alkohol Teknis Pada Metode Destilasi-Adsorpsi: Pengaruh Pencampuran Alginat Dan Serbuk Kalsium Oksida (CaO) Adsorben Untuk Peningkatan Kadar Alkohol Teknis Pada Metode Destilasi-Adsorpsi Mahirullah, Mahirullah; Lamuru, Afrianti S; Ningsih, Nining Widiana; Arifin
Jurnal Jejaring Matematika dan Sains Vol. 5 No. 1 (2023): Jurnal Jejaring Matematika dan Sains
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jjms.2023.v5.i1.802

Abstract

This study examines the effect of adding alginate to Calcium Oxide (CaO) powder as an adsorbent pallets in the process of increasing the alcohol levels using the adsorption distillation method. The adsorption distillation method is one of the methods that can be used in alcohol purification. Pure alcohol can be used as an alternative fuel or as an additive in fuel so that it can increase the octane number and produce environmentally friendly exhaust gases. The purpose of this study was to determine the effect of varying alginate concentrations on mixing calcium oxide (CaO) powder to increase technical ethanol content. Alginate concentrations used were 1%, 1.5%, 2%, 2.5% and 3%. The feed ethanol used is 70% and 96% ethanol. The results showed that the optimum concentration of alginate mixed with Calcium Oxide (CaO) powder to become an adsorbent to increase the ethanol content was 2.5%, which increased the ethanol content from 70% to 89% and from 96% to 98.25%. The pore volume of the adsorbent with the addition of 2.5% alginate was 0.89 ml. The ipenelotian results show that the effect of adding alginate to calcium oxide powder can affect the pore density of the alginate gel on calcium oxide powder. The pore density will affect the pore volume of the adsorbent. The increase in pore volume indicates that more adsorbent pores are formed. The more the number of pores in the adsorbent, the ability of the adsorbent to absorb water increases.
Pembuatan Karbon Aktif Magnetik Dari Kulit Singkong Untuk Menurunkan Kadar Logam Fe Dalam Air Lamuru, Afrianti S; Mahirullah, Mahirullah; Alimin, Jumriani; Hambali, A. Miftah Alya Patrisia
Venn: Journal of Sustainable Innovation on Education, Mathematics and Natural Sciences Vol. 5 No. 2 (2026): Biology, Physics, Chemistry, and other Basic Sciences
Publisher : Pusat Studi Bahasa dan Publikasi Ilmiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53696/venn.v5i2.425

Abstract

Groundwater often contains iron (Fe), which can cause a metallic taste, yellow color, iron bacteria growth, and turbidity. One method used to reduce iron content in water is the use of activated carbon. However, activated carbon has disadvantages such as long separation times and requires filtration equipment that can filter activated carbon. This study aims to produce magnetic activated carbon from cassava peel composite with magnetite to be used in reducing iron concentration in water. The methods used in this study included carbonization, activation with 2.5% KOH activator, activated carbon and magnetite composite with a 2:1 ratio, FTIR analysis, quality analysis through water content, ash, and iodine adsorption capacity tests in accordance with SNI 06-3730-1995 standards, surface area analysis using a BET instrument, and Fe adsorption application with varying times. The results showed that magnetite activated carbon was successfully synthesized, as confirmed by FTIR analysis, which indicated the presence of Fe-O bonds in the activated carbon and its ability to be attracted to a magnetic field. The adsorption effectiveness of magnetic activated carbon reached 77.38% with a contact time of 30 minutes. The quality test results of magnetic activated carbon did not meet the SNI 06-3730-1995 standard, with an iodine adsorption capacity of 620 mg/g. This study provides an overview of magnetic activated carbon composites  from cassava peel, which have advantages in the separation process between adsorbent and adsorbate after adsorption. Research on the optimization of the manufacturing process for magnetic activated carbon that meets SNI standards is urgently needed.
Co-Authors Alimin, Jumriani Arifin Hambali, A. Miftah Alya Patrisia Juita , Sri Mahirullah Mahirullah, Mahirullah Ningsih, Nining Widiana