Article Per Year (5 Year)
p-Index From 2021 - 2026
0
P-Index
This Author published in this journals
All Journal Indonesian Journal of Chemistry Jurnal Teknologi Kimia Unimal
Amri Ismail
Jurusan Teknik Kimia Fakultas Teknik Universitas Malikussaleh
Chemical Engineering, Chemistry & Bioengineering Chemistry Education Engineering Environmental Science Industrial & Manufacturing Engineering

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
ACTIVATED CARBON FROM DURIAN SEED BY H3PO4 ACTIVATION: PREPARATION AND PORE STRUCTURE CHARACTERIZATION Amri Ismail; Hanggara Sudrajat; Desi Jumbianti
Indonesian Journal of Chemistry Vol 10, No 1 (2010)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (249.294 KB) | DOI: 10.22146/ijc.21495

Abstract

Activated carbons have been produced from the natural biomaterial durian (Durio zibethinus) seed, using phosphoric acid (H3PO4) as the activating agent. The effects of impregnation ratio, activation temperature, heating rate on the carbon surface area, porosity and mass yield are presented. A two step process has been used, the first step was a low temperature impregnation at 150 °C using phosphoric acid and the second step was the carbonization at high temperatures, namely, 600 and 900 °C. The most outstanding carbon with the highest surface area of 2123 m2/g was prepared using an impregnation ratio of 2, an activation temperature of 600 °C for 4 h and a heating rate of 1 °C/min.
SYNTHESIS OF COPPER OXIDE NANO PARTICLES BY USING Phormidium cyanobacterium Abdul Rahman; Amri Ismail; Desi Jumbianti; Stella Magdalena; Hanggara Sudrajat
Indonesian Journal of Chemistry Vol 9, No 3 (2009)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (360.079 KB) | DOI: 10.22146/ijc.21498

Abstract

In this paper, we report a suitable method for extracellular synthesis of copper oxide nano particles by using Phormidium cyanobacterium. We hypothesize that synthesis of copper oxide nano particles is believed to occur by extracellular hydrolysis of the cationic copper by certain metal chelating anionic proteins/reductase secreted by bacteria under simple experimental conditions like aerobic environment, neutral pH and room temperature. Proteins not only reduce Cu (II) into copper oxide nano particles (CONPs) but also plays significant role in stabilization of formed nanoparticles at room temperature. Further TEM, SEM, XRD and FTIR analysis have confirmed the synthesis of nano particles through microbial route. Extracellular induction of metal chelating proteins/reductase was analyzed by SDS-PAGE.
PROSES PEMBUATAN MINYAK DEDAK PADI (RICE BRAIN OIL) MENGGUNAKAN METODE EKSTRAKSI Suryati Suryati; Amri Ismail; Afriyanti Afriyanti
Jurnal Teknologi Kimia Unimal Vol 4, No 1 (2015): Jurnal Teknologi Kimia Unimal - Mei 2015
Publisher : LPPM Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Dedak padi dapat dikembangkan sebagai bahan baku dalam pembuatan minyak pangan. Oleh karena itu dilakukan penelitian ini dengan tujuan mengisolasi dedak padi menjadi Minyak dedak mentah, pembuatan minyak dedak ini dengan menggunakan proses ekstraksi dengan menggunakan pelarut yang mudah menguap  yaitu N- hexane. Penelitian ini dilakukan dengan waktu reaksi  4 , 5, 6, dan 7 jam dengan  pelarut 150 ml, 200 ml,dan 250 ml. Tahap awal penelitian ini adalah persiapan bahan baku yang berupa dedak yang diperam  kurang lebih 2 bulan, kemudian di ayak dengan ukuran ayakan 100 mesh dan ditimbang  dan dilanjutkan kedalam proses ekstraksi. Hasil dari proses ekstraksi kemudian didistilasi untuk memisahkan pelarut dengan minyak. minyak yang diperoleh dari hasi distilasi dianalisa % yield minyak, kadar  asam lemak dan densitas minyak. Dari hasil penelitian ini diperoleh hasil yang terbaik adalah pada waktu ekstraksi 7 jam dengan jumlah pelarut yang digunakan 250ml. Untuk % yield minyak yang diperoleh yaitu 13,5%, kadar asam lemak bebas  2,875% dan densitas minyak dedaknya 0,901 gr/ml.
Co-Authors Afriyanti Afriyanti Desi Jumbianti Desi Jumbianti Hanggara Sudrajat Hanggara Sudrajat Stella Magdalena Suryati Suryati