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Jurnal Crystal
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Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya
Published by Universitas PGRI Banyuwangi
ISSN : -     EISSN : 26857065     DOI : https://doi.org/10.36526/jc
Core Subject : Science, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering
Jurnal crystal merupakan jurnal yang diterbitkan oleh program studi kimia Universitas PGRI Banyuwangi. Jurnal ini memuat dan menerbitkan jurnal yang sesuai dengan bidang ilmu kimia murni dan terapannya yang terbit dua kali dalam setahun yaitu bulan maret dan september. adapun penerbitan jurnal didasari dengan komitmen pada kelayakan penulisan artikel ilmiah, prosedur dan format penulisan, dan kontinuitas publikasi.
Arjuna Subject : -
Articles 151 Documents
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PENGARUH PENGGUNAAN KALIUM HIDROKSIDA DAN ASAM FOSFAT TERHADAP AKTIVITAS AMPAS KOPI DALAM PENGOLAHAN MINYAK JELANTAH Rika Endara Safitri
Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya Vol. 8 No. 1 (2026): Literasi Artikel Penelitian Kimia
Publisher : Program Studi Kimia, Fakultas MIPA, Universitas PGRI Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36526/jc.v8i1.7760

Abstract

Coffee grounds contain various components, namely total carbon with a content of 47.8-58.9%, total nitrogen 1.9-2.3%, ash 0.43-1.6%, and cellulose as much as 8.6%. The high carbon content in coffee grounds makes it suitable for use in the manufacture of activated carbon. In this study, the utilization of coffee grounds is increased as an adsorbent by processing it into activated carbon material. Chemical carbon activation can use acidic, basic, or salt chemicals such as hydrogen chloride (HCl), phosphoric acid (H3PO4), potassium hydroxide (KOH), potassium carbonate (K2CO3), and zinc chloride (ZnCl2). In this study, KOH and H3PO4 were used as activated carbon activator compounds in coffee grounds. To determine the level of ability of potassium hydroxide and phosphoric acid as coffee grounds activators, used cooking oil was used as one of the application media. In this study, it can be concluded that the use of phosphoric acid in the coffee grounds activation process can increase the absorption capacity compared to the use of potassium hydroxide.

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