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INDONESIA
Jurnal Sains Materi Indonesia
Published by Badan Tenaga Nuklir Nasional
ISSN : -     EISSN : -     DOI : -
Core Subject : Science,
Materials Science & Nanotechnology
Jurnal Sains Materi Indonesia (Indonesian Journal of Materials Science), diterbitkan oleh Pusat Teknologi Bahan Industri Nuklir - BATAN. Terbit pertama kali: Oktober 1999, frekuensi terbit: empat bulanan.
Arjuna Subject : -
Articles 14 Documents
 1   2 
Search results for , issue "VOL 13, NO 1: OKTOBER 2011" : 14 Documents clear
PENGARUH MORFOLOGI TiO2 DAN DOPANT PLATINA TERHADAP PRODUKSI HIDROGEN Indar Kustiningsih; Hilda Mareta; Dian Mustofa; Slamet Slamet; WidodoWahyu Purwanto
Jurnal Sains Materi Indonesia VOL 13, NO 1: OKTOBER 2011
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (426.918 KB) | DOI: 10.17146/jusami.2011.13.1.5383

Abstract

INFLUENCE OF PARTICLE SIZE ON REDUCTION KINETICS OF NATURAL LATERITIC IRON ORES M. Anis; Basso D. Makahanap; A. Manaf
Jurnal Sains Materi Indonesia VOL 13, NO 1: OKTOBER 2011
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (113.627 KB) | DOI: 10.17146/jusami.2011.13.1.5395

Abstract

INFLUENCE OF PARTICLE SIZE ON REDUCTION KINETICS OFNATURAL LATERITIC IRON ORES. This work is to report a laboratory investigation on the influence of particle sizes on reduction behavior of natural lateritic iron ore with anthracite coal under isothermal condition. The main minerals content of investigated ore were goethite = 62.8%, hematite = 18.3% and magnetite (Fe3O) = 6.2% and other oxide minerals like alumina = 6.6%, silica = 4.5%, chromate = 3.3% and others. The ore and anthracite coal of -100, -200 and -500 μm size with mol ratio between iron oxide and carbon in the anthracite of 1 : 1.88 were mixed, pressed into a composite of 12 mm diameter and 20 mm long and heated isothermally at four different temperatures for various reduction times. The metallization is determined by the reduction temperature and time. Mostly, effective reduction temperatures were found to be 1100 o 4 C resulted in the highest value of metallization of almost 96 %. The particle size seems has no significant influence on the metallization value at this reduction temperature. However, particle sizes influenced significantly the metallization for reduction temperatures of less than 1100 C from which values of metallization increased with decreasing in particle sizes.
PREPARATION, CHARACTERIZATION AND USED OF POLYSULFONE MEMBRANES FOR THE TREATMENT OF WATER SOLUTIONS CONTAINING HUMIC ACIDS Ni Nyoman Rupiasih; Made Sumadiyasa; A.A. Ratnawati; Hery Suyanto
Jurnal Sains Materi Indonesia VOL 13, NO 1: OKTOBER 2011
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (419.879 KB) | DOI: 10.17146/jusami.2011.13.1.5400

Abstract

PREPARATION, CHARACTERIZATION AND USED OF POLYSULFONE MEMBRANES FOR THE TREATMENT OF WATER SOLUTIONS CONTAINING HUMIC ACIDS. Polysulfone (PSf) membranes were cast by phase inversion method using PSf as matrix, N,N-Dimethylacetamide (DMAc) as solvent and distilled water as coagulant. The microporous membrane has studied using Scanning Electron Microscope (SEM) and filtration techniques. The filtration experiments were performed on a flat sheet membrane using pure water and humic acids (HA) solution as feeds. The results show, the Pure Water Flux (PWF) and Product Flux (PF) values decrease with increasing thickness of the membranes. They are consistent with the SEM images that thicker membranes have smaller pore size and less in numbers. The Rejection coefficient (R) values showthat the membranes are able to filter HA in the form of solution, with the performance dependent on the characteristics: thickness and microporous structure. They were increased with increase in the thickness of the membranes and with increase in the wavelength from 250-665 nm. It suggests that, the PSf membranes can be used to minimize the amount of Humic Acids from water process to improve the quality of treated to an acceptable quality level.
EFEKTIFITAS FOTOKATALIS TiO2 YANGDIKOMPOSITKAN DENGAN KARBONAKTIF DAN PRECIPITATED CALCIUM CARBONAT DALAM MENURUNKAN CHROM DARI LIMBAH INDUSTRI ELEKTROPLATING Siti Naimah; Rahyani Ermawati
Jurnal Sains Materi Indonesia VOL 13, NO 1: OKTOBER 2011
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2085.486 KB) | DOI: 10.17146/jusami.2011.13.1.5391

Abstract

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