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All Journal MEDIA KONSERVASI Jurnal Sains Materi Indonesia Jurnal Teknologi Mineral dan Batubara Jurnal Teknologi Mineral dan Batubara
Aminah .
Jurusan Kimia, Fakultas MIPA, Universitas Indonesia
Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Energy Environmental Science Materials Science & Nanotechnology

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PREPARATION OF ELECTROCHEMICALLY IMMOBILIZED IRON ON THIN FILM FAUJASITE-NANOZEOLITE MODIFIED GLASSY CARBON Yuni K. Krisnandi; Ivandini T. Anggraningrum; Hanny Tovina; Aminah Aminah
Jurnal Sains Materi Indonesia Vol 12, No 2: FEBRUARI 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 (330.774 KB) | DOI: 10.17146/jsmi.2011.12.2.4602

Abstract

PREPARATION OF ELECTROCHEMICALLY IMMOBILIZED IRON ON THIN FILM FAUJASITE-NANOZEOLITE MODIFIED GLASSY CARBON. Metal iron that electrochemically immobilized on thin film faujasite type of nanozeolite (FAU-nanozeolite) grown on polyelectrolyte (PDDA, PSS, PDDA layers) modified glassy carbon has been prepared. Thin film of FAU-type nanozeolite was synthesized using seeding method. The seeded modified-glassy carbon then was immersed in FAU colloidal suspension at 100 oC for certain period. XRD patterns of the seed and as-synthesized zeolite powder have similarity with the patterns from standard NaY zeolite. SEM images of thin film nanozeolite also show the appearance of crystals with homogeneous size of about < 1 μm. The best spread thin film was obtained when using 3 ml seed and immersion in colloidal FAU solution for 20 hours. The thin film then was utilized for metal iron synthesis, in which Fe(III) from FeNO3 solution containing Na-citrate of that adsorbed on the surface of thin film was electrochemically reduced to (Fe0). SEM image shows some aggregates (size > 100 nm) of the nanozeolite thin film. However, it can also be seen that the crystals actually consist of smaller particles with size < 100 nm. The EDS mapping of the surface indicates that after electrochemical treatment, the surface of thin film consists of about 0.30% (w/w) iron that spread evently both on the surface covered by nanozeolite thin film and that from modified glassy carbon.
PENGARUH JENIS KOLEKTOR ANIONIK DITIOFOSFAT PADA FLOTASI RUAH MINERAL SFALERIT DAN KALKOPIRIT NGURAH ARDHA; AMINAH AMINAH; ISYATUN RODLIYAH
Jurnal Teknologi Mineral dan Batubara Vol 6, No 1 (2010): Jurnal Teknologi Mineral dan Batubara Edisi Januari 2010
Publisher : Puslitbang tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (539.123 KB) | DOI: 10.30556/jtmb.Vol6.No1.2010.876

Abstract

Penelitian ini dilakukan untuk mengetahui pengaruh konsentrasi 3 jenis kolektor anionik ditiofosfat pada flotasi mineral sulfida sfalerit dan kalkopirit, Jenis kolektor yang digunakan adalah sodium-aerofloat (dietil ditiofosfat atau C4- DTP); aerofloat-211 (diisopropil ditiofosfat atau C6-DTP) dan aero-3477 (diisobutil ditiofosfat atau C8-DTP) yang masing-masing memiliki 4, 6 dan 8 atom karbon pada rantai hidrokarbonnya. Percobaan menggunakan metode flotasi ruah tingkat penyesah dengan memberlakukan pengaruh sinergi konsentrasi kolektor dan pH luluhan. Tolok ukur keberhasilan proses adalah perolehan tertinggi kalkopirit dan sfalerit. Secara kuantitatif hasil percobaan terbaik adalah pada penggunaan kolektor C8-DTP konsentrasi 0,1 g/kg bijih pada pH 9, menghasilkan konsentrat ruah Cu/Zn dengan perolehan 83%. Secara kualitatif hasil percobaan menunjukkan bahwa semakin panjang rantai hidrokarbon dalam senyawa kolektor pada pH basa, perolehan kalkopirit dan sfalerit semakin besar, konsentrasi kolektor yang diperlukan semakin kecil.
PENGARUH JENIS KOLEKTOR ANIONIK DITIOFOSFAT PADA FLOTASI RUAH MINERAL SFALERIT DAN KALKOPIRIT NGURAH ARDHA; AMINAH AMINAH; ISYATUN RODLIYAH
Jurnal Teknologi Mineral dan Batubara Vol 6 No 1 (2010): Jurnal Teknologi Mineral dan Batubara Edisi Januari 2010
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol6.No1.2010.876

Abstract

Penelitian ini dilakukan untuk mengetahui pengaruh konsentrasi 3 jenis kolektor anionik ditiofosfat pada flotasi mineral sulfida sfalerit dan kalkopirit, Jenis kolektor yang digunakan adalah sodium-aerofloat (dietil ditiofosfat atau C4- DTP); aerofloat-211 (diisopropil ditiofosfat atau C6-DTP) dan aero-3477 (diisobutil ditiofosfat atau C8-DTP) yang masing-masing memiliki 4, 6 dan 8 atom karbon pada rantai hidrokarbonnya. Percobaan menggunakan metode flotasi ruah tingkat penyesah dengan memberlakukan pengaruh sinergi konsentrasi kolektor dan pH luluhan. Tolok ukur keberhasilan proses adalah perolehan tertinggi kalkopirit dan sfalerit. Secara kuantitatif hasil percobaan terbaik adalah pada penggunaan kolektor C8-DTP konsentrasi 0,1 g/kg bijih pada pH 9, menghasilkan konsentrat ruah Cu/Zn dengan perolehan 83%. Secara kualitatif hasil percobaan menunjukkan bahwa semakin panjang rantai hidrokarbon dalam senyawa kolektor pada pH basa, perolehan kalkopirit dan sfalerit semakin besar, konsentrasi kolektor yang diperlukan semakin kecil.
PEMANFAATAN JELUTUNG (Dyera spp.) OLEH SUKU ANAK DALAM DI TAMAN NASIONAL BUKIT DUABELAS , JAMBI ., Aminah; Zuhud, Ervizal A.M.; Siregar, Iskandar Z.
Media Konservasi Vol. 21 No. 2 (2016): Media Konservasi Vol. 21 No. 2 Agustus 2016
Publisher : Department of Forest Resources Conservation and Ecotourism - IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (466.055 KB) | DOI: 10.29244/medkon.21.2.168-173

Abstract

Anak Dalam Tribe (Suku Anak Dalam; SAD) used jelutong in their daily live. But nowadays, jelutong population was reduced. Increase the forest change area decrease the habitat preference of jelutong. It need the strategy and technique to conservation jelutong without conflict with local people interest. Traditional management of jelutong among SAD in Bukit Duabelas National Park (Taman Nasional Bukit Duabelas; TNBD) benefits to understanding technique used of jelutong latex and understanding ecological knowledge SAD for strategy of conservation jelutong, among  other are to described  jelutong population status in TNBD. The research was conducted by using focus group discussion and indepth interview 40 respondent to examine management and use of jelutong. In addition, vegetation analysis was also conducted to determine the status of jelutong population by 8 sampling plots with census technique in 2,88 ha area. It was determined that SAD use latex of jelutong especially for comodity. Traditional technique applied to all methods tapping, production, and marketing latex. Time latex tapping done in early morning on 5 to 6 am because sunrise decreased latex production. Latex mixed with samak (Syzygium pyrifolium) or vinegar 61, allowed to stand until thickened and forming lumps fit the mold. The local management of this species is based on simple maintenance and tapping latex of individuals in the swamp area, dryland area and homegardens agroforest.The structure of jelutong population in TNBD was destructed which are distribution number of jelutong per ha young stage less than mature stage. Keywords: Anak Dalam Tribe, bioprospecting, conservation, Dyera spp., ethnobotany
Co-Authors Ervizal AMZU Hanny Tovina ISKANDAR ZULKARNAEN SIREGAR Isyatun Rodliyah Ivandini Tribidasari Anggraningrum Mohammad Jamin Ngurah Ardha Nugraha Arif Karyanta Pratama, Agung Barok Tri Rejeki Andayani Yuni K. Krisnandi