Garuda - Garba Rujukan Digital

p-Index From 2019 - 2024

0.23

P-Index

This Author published in this journals

All Journal Jurnal Teknik Industri Jurnal Energi Dan Manufaktur Medical Journal of Indonesia Metalurgi Makara Journal of Technology Metalurgi

Bambang Suharno

Departemen Metalurgi Dan Material, Fakultas Teknik, Universitas Indonesia, Depok 16424, Indonesia

Author-ID : 389269

Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology

Published : 9 Documents Claim Missing Document

Claim Missing Document

Articles

STUDI PERBANDINGAN EFEK FOTOKATALISIS Fe2O3-TiO2 HASIL EKSTRAKSI ILMENIT BANGKA DAN P-25 DEGUSSA UNTUK APLIKASI PENGOLAHAN LIMBAH CAIR TPA CILOWONG[The Photocatalytic Effect of P-25 Degussa and Fe2O3-TiO2 Derived from Bangka- Indonesia Ilmenite Extraction for Waste Water Treatment of Leachate on the Landfill Cilowong] Lalasari, Latifa Hanum; Yuwono, Akhmad Herman; Firdiyono, Firdiyono; Andriyah, Lia; N, Elfi; Harjanto, Sri; Suharno, Bambang
Metalurgi Vol 27, No 3 (2012): Metalurgi Vol.27 No.3 Desember 2012
Publisher : Pusat Penelitian Metalurgi dan Material - LIPI

STUDI PERBANDINGAN EFEK FOTOKATALISIS Fe2O3-TiO2 HASIL EKSTRAKSI ILMENITBANGKA DAN P-25 DEGUSSA UNTUK APLIKASI PENGOLAHAN LIMBAH CAIR TPACILOWONG. Telah dilakukan penelitian penurunan kadar BOD5, COD, dan TDS dari lindi sampah tempatpembuangan akhir (TPA) Cilowong dengan menggunakan katalis Fe2O3-TiO2 dari hasil proses ekstraksi ilmenitBangka Indonesia dan TiO2 P-25 Degussa (komersial). Proses dilakukan dalam reaktor fotokatalitik berukuran30 x 15 x 20 cm dengan radiasi sinar UV 50 watt selama 90 menit pada temperatur kamar dan setiap 15 menitdiambil sampel untuk dilakukan analisa BOD5, COD, dan TDS. Variabel percobaan yang digunakan adalah rasiovolume (v/v) lindi/H2O sebesar 1/4; 1/8; 1/12; 1/16 dengan jumlah katalis yang digunakan masing-masingsebanyak 1 gram. Hasil penelitian pada rasio volume (v/v) lindi/H2O sebesar 1/16 menunjukkan penurunanBOD5, COD, TDS masing-masing sebesar 45; 90,43; 100 % untuk katalis Fe2O3-TiO2 dan sebesar 80,6; 75; 100% untuk TiO2 P-25 Degussa. Penelitian juga memberikan gambaran bahwa mineral Ilmenit Bangka Indonesiaberpotensi besar sebagai bahan baku dalam pembuatan katalis Fe2O3-TiO2. AbstractThe current work presents the results of investigation on the decreasing levels of BOD5, COD, TDS ofleachate on the landfill (TPA) Cilowong by using Fe2O3-TiO2 catalyst derived from the extraction process ofBangka Indonesia ilmenite as well as commercial TiO2 P-25 Degussa catalysts. The measurement wascarried out in a photocatalytic reactor of 30 x 15 x 20 cm equipped with a 50 watt UV radiation. The processwas performed for 90 minutes at room temperature, and the samples were taken every 15 min for BOD,COD, and TDS analyses. The ratio of leachate to H2O (%v) was varied as 1/4; 1/8; 1/12 and 1/16, with theamount of catalyst used was 1 gram. The result on ratio of leachate to H2O of 1/16 showed the decrease inBOD5, COD, TDS with the use of Fe2O3-TiO2 catalysts by 45; 90.43 and 100% for Fe2O3-TiO2 catalysts,while with the use of Degussa P-25 TiO2 catalysts the decrease in BOD5, COD, TDS reached by 80.6; 75 and100%, respectively. On the basis of findings, it is shown that Ilmenite Bangka Indonesia has great potentialas a raw material for synthesizing the Fe2O3-TiO2 catalysts.

ULTRASONIC TREATMENT EFFECT ON THE CONSOLIDATION OF Fe-Cr PARTICLE MIXTURES AFTER COMPACTION AND SINTERING PROCESS Silalahi, Marzuki; Untoro, Pudji; Suharno, Bambang; Harjanto, Sri
Metalurgi Vol 29, No 2 (2014): Metalurgi Vol.29 No.2 Agustus 2014
Publisher : Pusat Penelitian Metalurgi dan Material - LIPI

ULTRASONIC TREATMENT EFFECT ON THE CONSOLIDATION OF Fe-Cr PARTICLEMIXTURES AFTER COMPACTION AND SINTERING PROCESS. Fe-Cr microalloys which obtained byultrasonic method are the initial cores for the consolidation process. Therefore its facilitate the formation of thehomogeneous bulk of Fe-Cr alloy with a stable phase. In this research, the synthesis of bulk of Fe-Cr alloy fromthe particles mixture of (Fe+Cr) as the ultrasonic treatment results has been carried out. The particlesconsolidation has been carried out through a process of compaction without adding any lubricants and followedby sintering process in the quartz glass capsules by using induction furnace at 1300 °C. Consolidation of mixtureof Fe-Cr particles that have not undergone previous ultrasonic treatment is also made for a comparison. Theinvestigation by using the SEM (scanning electron microscope)- and density measurements method werepreformed on the Fe-Cr green powders compaction. The bulk of Fe-Cr alloys that are produced trough sinteringprocess was observed using SEM-EDS (energy dispersive spectroscopy), XRD (x-ray diffraction), and densitymeasurements method. The bulk of Fe-Cr alloy prepared with ultrasonically treated Fe-Cr microalloy powders,is more homogeneous in composition and has a better phase stability in comparison to Fe-Cr powders preparedwithout the ultrasonic treatment. Production of bulk Fe-Cr alloy in quartz glass capsule during the sinteringprocess has produced Fe-Cr alloy without oxides.

The potential of carbonate apatite as an alternative bone substitute material Rahyussalim, Ahmad Jabir; Supriadi, Sugeng; Marsetio, Aldo Fransiskus; Pribadi, Pancar Muhammad; Suharno, Bambang
Medical Journal of Indonesia Vol 28, No 1 (2019): March
Publisher : Faculty of Medicine Universitas Indonesia

Bone reconstructive surgery has become a common procedure, and bone transplantation has become the second most frequently performed tissue transplantation procedure worldwide. Therefore, the need for bone substitute materials has increased. Artificial bone substitutes exhibit osteoconductive properties and feature several advantages, including abundant resources, low cost, and low donor site morbidity. Carbonate apatite (CO3Ap) is a calcium phosphate ceramic that can be used as a synthetic bone graft. The carbonate content of this ceramic is similar to that of bone apatite. In this review, we show that carbonate apatite can be degraded given its chemical reactivity in a weakly acidic environment and through osteoclast resorption. Moreover, it is osteoconductive and promotes bone tissue formation without fibrotic tissue formation. Additionally, microstructural analysis revealed that new bone tissue is formed within the bone graft itself.

Correlation Between Morphological And Fraction Size Of Intermetallic On Fluidity Of Al-11%Si Alloy With Fe Addition Nanda, Is Prima; Suharno, Bambang
Jurnal Teknik Industri Vol 11, No 2 (2010): Agustus
Publisher : Department Industrial Engineering, University of Muhammadiyah Malang

Intermetallic morphology influence on the fluidity of alloys Al-11% Si. From the experiments, fluidity in the alloy Al-11% Si were added 0.6, 0.8, and 1.0% Fe, it was found that the higher the Fe content is added to the values decreasing fluidity. On addition of 1% Fe provides the longest phase of intermetallic 50.2 mm, while the shortest intermetallic phase is given by the addition of 0.6% Fe 21.3 mm. In the alloy Al-11% Si with the addition of Fe are generally higher and higher, would produce intermetallic area fraction increased significantly. On addition of 0.6% Fe intermetallic area fraction of 1.01%, while the addition of 0.8% and 1% Fe Fe each area fraction 1.16% and 2.26%

Correlation Between Morphological And Fraction Size Of Intermetallic On Fluidity Of Al-11%Si Alloy With Fe Addition Is Prima Nanda; Bambang Suharno
Jurnal Teknik Industri Vol. 11 No. 2 (2010): Agustus
Publisher : Department Industrial Engineering, University of Muhammadiyah Malang

Pengaruh unsur Tembaga (Cu) terhadap fluiditas paduan Al-Si 11.8 wt% (ADC 12) dengan metode Vacuum Suction Test Bambang Suharno; Is Prima Nanda; Bustanul Arifin; Demas Seto
Jurnal Energi Dan Manufaktur Vol 1, No.2 Desember 2006
Publisher : Department of Mechanical Engineering, University of Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (21.404 KB)

Al-Si 11.8 wt% alloy which classified to eutectic Al-Si composition usually used to produce a flat casting product with high pressure die casting process. Alloying element become an important things to determine behavior and characteristic of aluminum. Copper added into aluminum to improve strength and hardness, but there has no many studies on the effect of copper on fluidity. This fluidity study is using vacuum suction test method and the microstructure is observed with SEM/EDS. Spectrometer test has been used to find out chemical composition of sample. The result of this study shows that with copper addition from 2.25 wt% to 3.11 wt%, the fluidity value has increased 24.11% on 680oC pouring temperature. On 3.11 wt% copper composition, fluidity value has increased 14.38% from 640oC pouring temperature to 700oC pouring temperature.

Effect of Contact Time on Interface Reaction between Aluminum Silicon (7% and 11%) Alloy and Steel Dies SKD 61 Suharno, Bambang; Nurhayati, Neni Octapiani; Arifin, Bustanul; Harjanto, Sri
Makara Journal of Technology Vol. 11, No. 2
Publisher : UI Scholars Hub

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

Effect of Contact Time on Interface Reaction between Aluminum Silicon (7% and 11%) Alloy and Steel Dies SKD 61. Die soldering (die sticking) is a defect of metal casting in which molten metal “welds” to the metallic die mold surface during casting process. Die soldering is the result of an interface reaction between the molten aluminum and the die material. Aluminum alloy with 7 and 11% silicon and SKD 61 die steel are the most common melt and die material used in aluminum die casting. This research is done to study the morphology and the characteristics of the formed AlxFeySiz intermetallic layer during interface reaction at dipping test. The samples of as-anneal SKD 61 tool steel was dipped into the molten of Al-7%Si held at temperature 680oC and into molten Al-11%Si held at temperature 710oC with the different contact time of 10 minutes; 30 minutes; and 50 minutes. The research results showed that the interface reaction can form a compact intermetallic layer with AlxFey phase and a broken intermetallic layer with AlxFeySiz phase on the surface of SKD 61 tool steel. The increasing of the contact time by the immersion of material SKD 61 tool steel in both of molten Al-7%Si and Al-11%Si will increase the thickness of the AlxFeySiz intermetallic layer until an optimum point and then decreasing. The micro hardness of the AlxFeySiz intermetallic layer depends on the content of the iron. Increasing of the iron content in intermetallic layer will increase the micro hardness of the AlxFeySiz. This condition happened because the increasing of Fe content will cause forming of intermetallic AlxFeySiz phase becomes quicker.

STUDI PERBANDINGAN EFEK FOTOKATALISIS Fe2O3-TiO2 HASIL EKSTRAKSI ILMENIT BANGKA DAN P-25 DEGUSSA UNTUK APLIKASI PENGOLAHAN LIMBAH CAIR TPA CILOWONG[The Photocatalytic Effect of P-25 Degussa and Fe2O3-TiO2 Derived from Bangka- Indonesia Ilmenite Extraction for Waste Water Treatment of Leachate on the Landfill Cilowong] Latifa Hanum Lalasari; Akhmad Herman Yuwono; Firdiyono Firdiyono; Lia Andriyah; Elfi N; Sri Harjanto; Bambang Suharno
Metalurgi Vol 27, No 3 (2012): Metalurgi Vol.27 No.3 Desember 2012
Publisher : National Research and Innovation Agency (BRIN)

ULTRASONIC TREATMENT EFFECT ON THE CONSOLIDATION OF Fe-Cr PARTICLE MIXTURES AFTER COMPACTION AND SINTERING PROCESS Marzuki Silalahi; Pudji Untoro; Bambang Suharno; Sri Harjanto
Metalurgi Vol 29, No 2 (2014): Metalurgi Vol.29 No.2 Agustus 2014
Publisher : National Research and Innovation Agency (BRIN)

Co-Authors Akhmad Herman Yuwono Akhmad Herman Yuwono Andriyah, Lia Anne Zulfia Arbi Dimyati Badrul Munir, Badrul Bambang Irawan Bustanul Arifin Demas Seto Elfi N Firdiyono Firdiyono Firdiyono, Firdiyono Hanny Hafiar Is Prima Nanda Johny Wahyuadi Soedarsono, Johny Kirman Kirman, Kirman Lalasari, Latifa Hanum Latifa Hanum Lalasari Lia Andriyah Luh Putu Ratna Sundari Marsetio, Aldo Fransiskus Marzuki Silalahi N, Elfi Nurhayati, Neni Octapiani Pribadi, Pancar Muhammad Pudji Untoro Pudji Untoro Rahyussalim Rahyussalim, Rahyussalim Sri Harjanto Sri Harjanto Sugeng Supriadi, Sugeng Tito Winnerson Sitanggang, Tito Winnerson Tjokro Prasetyadi, Tjokro Vika Rizkia

Title

Found 9 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 9 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 9 Documents
Search