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All Journal VALENSI JURNAL KIMIA SAINS DAN APLIKASI Jurnal Sains Dasar EduChemia: Jurnal Kimia dan Pendidikan Chimica et Natura Acta ALCHEMY Jurnal Penelitian Kimia Indonesian Mining Journal Jurnal Kartika Kimia Jurnal Ilmiah Berkala: Sains dan Terapan Kimia Jurnal Ilmu dan Inovasi Fisika Indonesian Mining Journal
Solihudin Solihudin
Departemen Kimia, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Padjadjaran
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology

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KOMPOSIT KARBON ZEOLIT BERBAHAN DASAR SEKAM PADI Yati B Yuliyati; Solihudin Solihudin; E Evy Ernawati; Atiek Rostika Noviyanti; Rizka Endah
Jurnal Sains dan Terapan Kimia Vol 11, No 1 (2017)
Publisher : Program Studi Kimia, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (248.07 KB) | DOI: 10.20527/jstk.v11i1.3167

Abstract

Uji Kualitas Briket dari Tongkol Jagung dengan Perekat Kanji/PET dan Komposisi Gas Buang Pembakarannya Haryono Haryono; Evy Ernawati; Solihudin Solihudin; Diah Ayu Susilowati
JIIF (Jurnal Ilmu dan Inovasi Fisika) Vol 4, No 2 (2020)
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (201.895 KB) | DOI: 10.24198/jiif.v4i2.28606

Abstract

Limbah tongkol jagung merupakah salah satu limbah biomassa potensial di Indonesia sebagai bahan baku pembuatan briket. Briket termasuk bahan bakar terbarukan yang relatif lebih ramah ligkungan. Kualitas briket sangat dipengaruhi oleh berbagai faktor, diantaranya adalah jenis biomassa sebagai sumber karbon, jenis bahan pengikat, dan komposisi antara biomassa terhadap bahan pengikat. Polimer sintetik polietilen tereptalat memiliki sifat sebagai bahan pengikat pada pembuatan briket. Polietilen tereptalat banyak dijumpai sebagai limbah plastik. Penelitian ini bertujuan memanfaatkan limbah berupa tongkol jagung dan plastik polietilen tereptalat sebagai bahan pembuatan briket, dan mempelajari pengaruh komposisi arang tongkol jagung dan plastik polietilen tereptalat terhadap kualitas (sifat psikokimia) dan komposisi gas buang pembakaran briket. Komposisi bahan pembuatan briket divariasikan pada rasio berat arang tongkol jagung terhadap plastik sebesar 95:5, 90:10, dan 85:15. Kualitas briket diuji dan dibandingkan dengan SNI 01-6235-2000 tentang Briket Arang Kayu berdasarkan parameter nilai kalor, kadar air, kadar abu, dan kadar volatile matter. Hasil penelitian menunjukkan bahwa komposisi campuran bahan pembuat pada rasio berat antara arang tongkol jagung terhadap plastik polietilen tereptalat sebesar 95:5 menghasilkan briket dengan kualitas terbaik. Briket pada komposisi tersebut memenuhi standar kualitas menurut SNI briket arang kayu dan mengemisikan gas buang berupa hidrokarbon, karbon monoksida, dan nitrogen oksida dengan kadar paling rendah.
Effect of Sodium Periodate on the Adsorption Capacity of Silica-Lignin from Rice Husk on Chromium(VI) Yati B. Yuliyati; Solihudin Solihudin; Atiek Rostika Noviyanti
Jurnal Kimia Sains dan Aplikasi Vol 22, No 6 (2019): Volume 22 Issue 6 Year 2019
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3369.346 KB) | DOI: 10.14710/jksa.22.6.242-249

Abstract

Reactive groups such as silanol, hydroxyl, and carbonyl groups in silica-lignin composites play a role in binding to chromium(VI) ions. The activation of functional groups in silica-lignin can be increased by the addition of an activator such as sodium periodate, which can also oxidize the lignin monomer (guaiasil) to ortho-quinone. This study aimed to obtain silica-lignin composites from rice husks activated by sodium periodate with a high surface area. Composite absorption was tested on chromium(VI) adsorption. Silica-lignin isolation was carried out by using the sol-gel method at concentrations of sodium hydroxide 5, 10, 15, and 20% (b/b). Silica-lignin activated with sodium periodate 10% (b/b) had the smallest particle size of about 8μm, with a surface area of 14.0888 m2.g-1 and followed Halsey isotherm adsorption model, with an adsorption capacity of 0.3054 mg.g-1.
SYNTHESIS AND CHARACTERIZATION OF GAMMA ALUMINA AND ITS ADSORPTION CAPABILITY TEST FOR POMALAA MAGNESIUM LATERITE, SOUTHEAST SULAWESI Titin Siti Fatimah; Atiek Rostika Noviyanti; Juliandri Juliandri; Solihudin Solihudin
Indonesian Mining Journal Vol 22 No 1 (2019): INDONESIAN MINING JOURNAL, Vol. 22 No. 1, April 2019
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/imj.Vol22.No1.2019.977

Abstract

Based on variations in calcination temperature, gamma alumina has successfully been made using a simple sol-gel method for Pomalaa magnesium-laterite adsorption from the South East of Sulawesi. The laterite leached by sulfuric acid was then precipitated by ammonia, to make the magnesium was separated from its main impurities (Si, Fe and Al). Temperature variations at 500, 650, 800 and 950 °C in gamma alumina making formed the gamma alumina phase while the alpha alumina phase was formed at 1100 °C. The higher calcination temperature the lower the specific surface area respectively from 196.385, 156.239, 105.725, 96.134 and 15.396 (m2/g). This results in decreasing the magnesium of the laterite 9.04, 8.70, 8.09, 6.39 and 0.29 (mg/L) respectively. The 800 °C-calcination gamma alumina has the highest volume of the pore, namely 0.3265 mL/g and the radius of 61.76 Å. The gamma alumina isotherm curve is type IV. The SEM-EDS test shows an aggregation spherical shape. Gamma alumina was detected to adsorb Mg laterite. The X-ray mapping of SEM-EDS test shows even distribution between gamma alumina, magnesium and nickel. The highest adsorption is retained by GA-800/3 sample, namely 81.31 %.
Co-Authors Atiek Rostika Noviyanti Diah Ayu Susilowati Diana Rakhmawaty Eddy Diding Mandala Putra E Evy Ernawati E. Evi Ernawati Evy Ernawati Evy Ernawati Haryono Haryono Juliandri Juliandri L Ahmad Na’ani L. Ahmad Na’ani Laelaturrohmah Laelaturrohmah Muhammad Rizky Ridwansyah Rizka Endah Rukiah Rukiah Rukiah Rukiah Rukiah Rukiah Rustaman Rustaman Seli Listiani Surya Pramana Susi Suryani Titin Siti Fatimah Titin Siti Fatimah Yati B Yuliyati Yati B. Yuliyati Yati B. Yuliyati Yeni Wahyuni Hartati