Article Per Year (5 Year)
p-Index From 2020 - 2025
0
P-Index
This Author published in this journals
All Journal JURNAL REKAYASA KIMIA & LINGKUNGAN Analit: Analytical And Environmental Chemistry
Ediman Ginting
Department of Physics, Lampung University, Jl. Sumantri Brojonegoro No. 1, Bandar Lampung 35145
Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Environmental Science

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Selective Reduction of High Alumina-Lateritic Nickel Ore (0.5 Ni-44Fe-16Al2O3) Nurjaman, Fajar; Wahyuningsih, Wahyuningsih; Karo Karo, Pulung; Ginting, Ediman; Shofi, Achmad; Handoko, Anton Sapto
Jurnal Rekayasa Kimia & Lingkungan Vol 14, No 2 (2019): Jurnal Rekayasa Kimia & Lingkungan (December, 2019)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v14i2.14561

Abstract

In this present study, the effect of reductant dosage, temperature and holding time on selective reduction process of high alumina-lateritic nickel ore have been investigated clearly. The lateritic nickel ore was reduced with 5 until 15 wt. % anthracite and 10 wt. % sodium sulfate at reduction temperature of 950C, 1050C and 1150C for 60, 90, and 120 minutes. Magnetic separation process was then conducted to separate the concentrate and tailing. The analysis of reduced nickel ore is performed by the Atomic Absorption Spectroscopy, X-Ray Diffraction, and Secondary Electron Microscopy. The optimal process resulted from the reduction of nickel ore with 10 wt. % anthracite at the temperature of 1050C for 120 minutes which resulted in 0.84% nickel in concentrate. The troilite was not found in reduced ore. The iron grade increased along the increased of reduction temperature. The longer of holding time in selective reduction process increased the nickel grade but it decreased the iron grade.
PENGARUH PENAMBAHAN INHIBITOR EKSTRAK DAUN TALAS DAN SUHU PERENDAMAN 40 oC DAN 70 oC TERHADAP LAJU KOROSI PADA BAJA API 5L DALAM LARUTAN NaCl 3% Affifah, Firyal Nurul; Ginting, Ediman; Suprihatin, Suprihatin
Analit : Analytical and Environmental Chemistry Vol. 4, No. 02 October (2019) Analit : Analytical and Environmental Chemistry
Publisher : Jurusan Kimia FMIPA Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aec.v4i2.2019.p76-85

Abstract

Ekstrak daun talas yang digunakan sebagai inhibitor pada baja API 5L, direndam dalam larutan korosif NaCl 3%. Dengan memvariasikan suhu perendaman  dan , dan juga konsentrasi inhibitor 0%, 2%, 8% dan 12%. Setelah perlakuan pada sampel diperoleh hasil perhitungan laju korosi yang paling rendah pada sampel A5-70-8 dan yang paling tinggi pada sampel A5-70-0. Inhibitor yang digunakan mempunyai nilai efisiensi paling tinggi pada sampel A5-70-8. Hasil karakterisasi XRD menunjukkan bahwa struktur Kristal yang terbentuk merupakan fase Fe murni. Karakterisasi SEM menunjukkan morfologi permukaan sampel, terlihat retakan pada sampel. Karakterisasi EDX pada sampel terlihat unsur oksigen (O) yang mengindikasikan bahwa sampel telah terkorosi.http://dx.doi.org/10.23960/aec.v4.i2.2019.p76-85
Co-Authors Affifah, Firyal Nurul Anton Sapto Handoko, Anton Sapto Fajar Nurjaman Karo Karo, Pulung Shofi, Achmad Suprihatin Suprihatin Wahyuningsih Wahyuningsih