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Himawan Tri Bayu Murti Petrus
Departemen Teknik Kimia, Fakultas Teknik, Universitas Gadjah Mada, Jl Grafika No. 2 Kampus UGM, Yogyakarta, 55281
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Physics Social Sciences Other

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SI DOEL (Donat Tiwoel): Inovasi Pengenalan dan Pengembangan Tiwul Sebagai Makanan Pokok Khas Yogyakarta Atmaja, Althea Farina; Priyawan, Adha; Fardani, Nadya; Zaqina, Radinda Bian; Kusumaningrum, Mita; Petrus, Himawan Tri Bayu Murti
Program Kreativitas Mahasiswa - Kewirausahaan PKM-K 2014
Publisher : Ditlitabmas, Ditjen DIKTI, Kemdikbud RI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (339.727 KB)

Abstract

The doel (Doenat Tiwoel) is a Tiwul processed products innovation in the form of donuts with different flavors at a price of Rp2000.00. Tiwul was chosen as the raw material because it has a higher carbohydrate content than rice, and safe for people with diabetes (Verawati and friends, 2011). Unfortunately Tiwul still not well liked by the society, where Tiwul is currently hard to find. Therefore, the Doel will introduce back Tiwul to the society. Si Doel production process consists of three phases: preparation, sales, and evaluation of the certification. The Doel products is packaged in plastic wrap and also attached a gold laced and a paper filled with the brand, Tiwul facts, and the number of calories in order to attract Doel and can educate consumers. The distribution of Doel is small shops, campus cafeteria, and special ordering from students and public consumers.This business will continue, for proof, in August , Doel has made an agreement with the owner of food carts and food shops. Keywords : Donut, Tiwul, Packaging, Distribution
Lanthanum and Nickel Recovery from Spent Catalyst using Citric Acid: Quantitative Performance Assessment using Response Surface Method Petrus, Himawan Tri Bayu Murti; Wijaya, Ardyanto; Iskandar, Yusuf; Bratakusuma, Danu; Setiawan, Hendrik; Wiratni, Wiratni; Astuti, Widi
Metalurgi Vol 33, No 2 (2018): Metalurgi Vol. 33 No. 2 Agustus 2018
Publisher : Pusat Penelitian Metalurgi dan Material - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (523.642 KB) | DOI: 10.14203/metalurgi.v33i2.437

Abstract

Heavy metals and Rare earth elements (REEs) are nowadays being used widely in many industries from electronics to petroleum industries as catalysts. However, their disposal caused serious problems to the environment. With the sharp growth in its usage, there is a better way to use and utilize valuable metals from secondary sources such as their disposal rather than using new raw materials. The aim of this work is to study the potential of citric acid as a leaching agent to extract lanthanum and nickel in various acid concentration and leaching temperature. The raw material used in this work is spent catalyst from Pertamina Refinery Unit VI, Balongan, Indonesia. The spent catalyst is decarbonized with a heat treatment at 725°C for 10 minutes before the leaching process. The leaching process used 0.1; 1; and 2 M of citric acid with a varied temperature of 30, 60, and 80°C. The lanthanum recovery was calculated by comparing the mass percentage of lanthanum before leaching process and after leaching process using Energy Dispersive X-Ray Spectroscopy (EDX). The results were analyzed by response surface methodology (RSM) and are proved to be a reliable method to depict and analyze the leaching characteristics. The molarity of the citric acid is the most significant independent variables used in the research for lanthanum recovery response. However, based on the Pareto analysis result there are no significant variables that affect the recovery of nickel. The second order polynomial fitting model is also proved to be compatible with the response of lanthanum recovery but is less compatible with nickel recovery.
Preliminary Study of Rare Earth Element and Yttrium (REY) Content of Coal In Sangatta Coalfield, East Kalimantan, Indonesia Anggara, Ferian; T.B.M. Petrus, Himawan; Patria, Aulia Agus; Bangun, Aya Shika
Indonesian Journal on Geoscience Vol 7, No 3 (2020)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.7.3.305-314

Abstract

DOI:10.17014/ijog.7.3.305-314Kutai Basin is known as one of the most prolific sedimentary coal basins in Indonesia. Coal-bearing sequence in Kutai Basin is mainly Miocene to Eocene in age in which the coal seams are mostly in Miocene strata. Researchers have found that REY concentration in some coals and coal ashes are equal to or higher than that of the conventional deposit, as such coal deposit has become an important source for REY. Moreover, REY recovery as by-product from coal deposits could alleviate the “dirty” into “clean” coal energy. Referring to this shifted paradigm, a study on REY in Indonesian coal has put interest not only for researchers, but also for all stakeholders in this country. In this particular study, Sangatta coalfield in East Kalimantan was chosen as the area to observe the REY concentration. This area has been set due to its interesting geological setting, especially Pinang Dome that might have coal deposit with enriched REY. For the analyzed samples, drill cores were collected and then observed closely using polished section, inductively coupled plasma atomic emission spectroscopy (ICP-AES), and inductively coupled plasma mass spectrometry (ICP-MS). Based on the collected data, the highest REY concentration in coal deposit is located in the nearest part of the Pinang Dome. The REY content in coal deposit is associated with hydrothermal fluids and sediment source. These data suggest that there is a significant effect on Pinang Dome in the REY content in the coal deposit.
Pembuatan Glukosa dan Sukrosa dari Rumput Laut dengan Metode Hidrolisa Menggunakan Katalis SiO2 Devi, Fatma Putrinta; Riyadi, Delfimelinda Nurul; Kurniawansyah, Firman; Petrus, Himawan TBM; Astuti, Widi; Roesyadi, Achmad
Prosiding Seminar Nasional Sains dan Teknologi Terapan 2020: Memberdayakan Riset dan Inovasi untuk Teknologi yang Berkelanjutan
Publisher : Institut Teknologi Adhi Tama Surabaya

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Abstract

Indonesia berada pada posisi pertama eksportir rumput laut, Namun pada posisi ke-7 dari sisi harga. Karbohidrat pada rumput laut dihidrolisis dengan katalis asam akan menghasilkan sejumlah monosakarida. Dalam hal ini, katalis berperan penting untuk menghasilkan produk. Memproses dengan katalis asam homogen memiliki beberapa kekurangan, salah satunya ialah sulit dalam proses pemisahan antara katalis dan produk akhir. Oleh karena itu dalam penelitian ini dilakukan dengan menggunakan bantuan katalis heterogen yaitu silika (SiO2). Tujuan penelitian ini adalah untuk mempelajari proses pembuatan sukrosa dan glukosa yang terbentuk dari rumput laut dan mempelajari reaksi proses hidrolisa rumput laut dengan katalis heterogen. Metodologi yang digunakan yaitu hidrolisa untuk pembuatan sukrosa dan glukosa dengan variabel katalis SiO2 komersil sulfonat dan SiO2 geothermal sludge sulfonat. Hasil analisa XRD mendapatkan sudut difraksi pada katalis SiO2 komersil sulfonat bersifat amorf dan katalis SiO2 geothermal sludge (GS) sulfonat bersifat kristal. Glukosa yang dihasilkan pada reaksi hidrolisis katalitik dengan katalis SiO2 komersil sulfonat lebih besar yaitu sebesar 0,0143(b/b) dari variabel katalis yang lain. Dan memiliki kadar sukrosa lebih tinggi sebesar 1,5 %. Sehingga dapat disimpulkan bahwa katalis SiO2 komersil sulfonat merupakan katalis yang menghasilkan glukosa dan kadar sukrosa lebih banyak dibandingkan dengan katalis lainnya.
TINJAUAN PUSTAKA KARAKTERISASI DAN POTENSI PEMANFAATAN FLY ASH DAN BOTTOM ASH (FABA): REVIEW ON CHARACTERIZATION AND UTILIZATION POTENTIAL OF FLY ASH AND BOTTOM ASH (FABA) Ferian Anggara; Himawan T.B.M Petrus; Dea Anisa Ayu Besari; Hotden Manurung; Febry Yulindra Abdi Saputra
Buletin Sumber Daya Geologi Vol. 16 No. 1 (2021): Buletin Sumber Daya Geologi
Publisher : Pusat Sumber Daya Mineral Batubara dan Panas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47599/bsdg.v16i1.320

Abstract

Fly ash and bottom ash (FABA) is defined as waste residu that is produced from coal combustion process in electric power plant. Its production will increase due to high demand of electric energy. It commonly consists of silica, alumina, ferric oxide, and others oxide. Coal ash is also an economically promising resource for extraction of several valuable elements, including Ge, Ga, rare earth elements and yttrium (REY), Nb, Zr, V, Re, Au, Ag, and base metals such as Al. Physical and chemical characteristics of FABA are important because it will affect their option of re-use and disposal method. Other potential utilization for FABA was involved geotechnical applications such as geopolymer material. Cenospheres are one of the most valuable materials found in FABA. To increase the potential use of FABA, many separation techniques have been developed to extract the value-added components, including: cenospheres, valuable metal and trace elements such as rare earth element and yttrium (REY), also the unburned carbon.
Preliminary Study of Rare Earth Element and Yttrium (REY) Content of Coal In Sangatta Coalfield, East Kalimantan, Indonesia Anggara, Ferian; T.B.M. Petrus, Himawan; Patria, Aulia Agus; Bangun, Aya Shika
Indonesian Journal on Geoscience Vol 7, No 3 (2020)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3250.994 KB) | DOI: 10.17014/ijog.7.3.305-314

Abstract

DOI:10.17014/ijog.7.3.305-314Kutai Basin is known as one of the most prolific sedimentary coal basins in Indonesia. Coal-bearing sequence in Kutai Basin is mainly Miocene to Eocene in age in which the coal seams are mostly in Miocene strata. Researchers have found that REY concentration in some coals and coal ashes are equal to or higher than that of the conventional deposit, as such coal deposit has become an important source for REY. Moreover, REY recovery as by-product from coal deposits could alleviate the “dirty” into “clean” coal energy. Referring to this shifted paradigm, a study on REY in Indonesian coal has put interest not only for researchers, but also for all stakeholders in this country. In this particular study, Sangatta coalfield in East Kalimantan was chosen as the area to observe the REY concentration. This area has been set due to its interesting geological setting, especially Pinang Dome that might have coal deposit with enriched REY. For the analyzed samples, drill cores were collected and then observed closely using polished section, inductively coupled plasma atomic emission spectroscopy (ICP-AES), and inductively coupled plasma mass spectrometry (ICP-MS). Based on the collected data, the highest REY concentration in coal deposit is located in the nearest part of the Pinang Dome. The REY content in coal deposit is associated with hydrothermal fluids and sediment source. These data suggest that there is a significant effect on Pinang Dome in the REY content in the coal deposit.
Mineralogy and Geochemistry of Gold Ore Low Sulfidation -Epithermal at Lamuntet, Brang Rea, West Sumbawa District, West Nusa Tenggara Province Rika Ernawati; Arifudin Idrus; Himawan Tri Bayu Murti Petrus
Journal of Geoscience, Engineering, Environment, and Technology Vol. 4 No. 3 (2019): JGEET Vol 04 No 03 : September (2019)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1337.001 KB) | DOI: 10.25299/jgeet.2019.4.3.1653

Abstract

There are two Artisanal Small scale Gold Mining (ASGM) location in Lamuntet, Brang Rea Subdistrict, West Nusa Tenggara Regency, namely Nglampar and Song location. Nglampar and Song location are included in the low sulfidation epithermal gold deposit system. The research purposes to analyze mineralogy and geochemistry of gold vein deposits and determine system of low sulfidation gold ore in Nglampar, Lamuntet Village. The methods used to determine the mineralogy of gold vein deposits are petrography, mineragraphy and X-ray diffractometer (XRD) analysis, while geochemical analysis using Scanning Electron Microscope (SEM) with Energy Dispersive X-Ray Spectroscopy (EDS), Fire Assay (FA) and Atomic Absorption Spectrophotometry (AAS). The results showed that the minerals contained were quartz (Qz), sericite (Ser), Chalcedon (Chc), chlorite (Chl), pyrite (Py), sphalerite (Sph), galena (Gn) , gold (Au), chalcopyrite (Cp), argentite (Ag), arsenopyrite (Apy), Azurit (Az), Malakit (Mal) and bornite (Bn). Abundant mineral availability such as sphalerite, galena, chalcopyrite and arsenopyrite are characterized by high levels of Zn, Pb, Cu and As the metal in vein deposits. This can be seen on the chemical content of ore in gold vein deposits ie Au 0.1 ppm -27.8 ppm, Ag 3 ppm-185 ppm, Pb 101 ppm - 35,800 ppm, Zn 73 ppm-60,200 ppm, Cu 26 ppm - 1,740 ppm, and As 150 ppm - 6,530 ppm. Based on the results of SEM-EDS analysis shows that the type of gold mineral is the electrum because of the content of Ag> 20%. Based on those characteristics of the mineralogy and geochemistry in this study showed that low sulfidation gold ore in this area is categorized as polymetallic gold-silver system.
Pengaruh Karakteristik Bijih pada Ekstraksi Nikel dari Bijih Limonit Indonesia menggunakan Pelindian Atmosferik Widi Astuti; Fika Rofiek Mufakhir; Fajar Nurjaman; Slamet Sumardi; Ulin Herlina; Fathan Bahfie; Himawan Tri Bayu Murti Petrus
Jurnal Metal Indonesia Vol 43, No 1 (2021): Metal Indonesia
Publisher : Balai Besar Logam dan Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32423/jmi.2021.v43.9-16

Abstract

AbstrakKebutuhan ekstraksi nikel dari bijih nikel laterit khususnya jenis bijih limonit dengan kadar nikel yang rendah sangat diperlukan karena kebutuhan nikel yang terus meningkat dengan adanya pengembangan kendaraan bermotor listrik berbasis baterai. Jenis dan karakteristik bijih laterit yang berbeda akan memberikan pengaruh pada hasil ekstraksi nikel. Pada penelitian ini dilakukan ekstraksi nikel dari bijih laterit jenis limonit yang berasal dari Pulau Halmahera (LH)) dan Pulau Sulawesi (LS) menggunakan pelindian atmosferik. Asam sulfat digunakan sebagai agen pelindian. Penelitian dilakukan untuk mengetahui pengaruh karakteristik bijih limonit (LH dan LS) pada berbagai variabel pelindian yaitu suhu (30oC, 50oC dan 80oC), konsentrasi asam sulfat (0,5M; 1M; dan 2M), waktu pelindian (15, 30, 60, 120, dan 240 menit), serta rasio bijih terhadap reagen pelindian (5, 10, dan 20% w/v) terhadap ekstraksi nikel dari bijih limonit. Hasil penelitian menunjukkan bahwa karakteristik bijih laterit sangat berpengaruh pada hasil pelindian dan persen rekoveri nikel. Nikel dari bijih LH yaitu jenis limonit dari Pulau Halmahera dapat diekstrak secara maksimal (100%) pada konsentrasi asam sulfat 0,5M, suhu 80oC, rasio bijih/larutan asam sulfat 10%, dan waktu pelindian 2 jam. Sedangkan persen ekstraksi nikel dari bijih LS yang terbesar adalah 95% yang diperoleh pada konsentrasi asam sulfat 2M, suhu 80oC, rasio bijih/larutan asam sulfat 5%, dan waktu pelindian 4 jam. AbstractNickel extraction from nickel laterite ores particularly low-grade limonite ore is needed along with the increase of nickel consumption on the development of battery electric vehicle. Types and characteristics of nickel laterite ores affect greatly on the nickel extraction from these ores. This research conducted the extraction of nickel from limonite ore from different areas i.e. Halmahera Island (LH) and Sulawesi Island (LS) using atmosferic leaching. Sulfuric acid (1M) was used as leaching reagent. Leaching processes were carried out for investigating the effects of limonite ore characteristics (LH and LS), leaching temperatures (30oC, 50oC dan 80oC), concentration of sulfuric acid (0.5M; 1M; 2M), leaching time (15, 30, 60, 120, and 240 minutes), and ratio of ore amount to volume of leaching reagent on the nickel extraction from limonite ores. Experimental results showed that ore characteristic affected greatly on the leaching result and nickel leaching recovery. Nickel from LH ore could be extracted maximum (100%) using sulfuric acid 0.5M, temperature of 80oC, and leaching time 120 minutes (2 hours). Whereas, the highest nickel extraction percentage from LS ore is 95% using sulfuric acid 2M, temperature of 80oC, and leaching time 240 minutes (4 hours).
Optimasi Presipitasi Logam Tanah Jarang dari Campuran Konsentrat Logam Tanah Jarang dengan Metode ”Response Surface Methodology” Akbar Yulandra; Iga Trisnawati; I Made Bendiyasa; Wahyu Rachmi pusparini; Himawan Tri Bayu Murti Petrus
Jurnal Metal Indonesia Vol 42, No 1 (2020): Metal Indonesia
Publisher : Balai Besar Logam dan Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (698.025 KB) | DOI: 10.32423/jmi.2020.v42.28-34

Abstract

Dua sumber LTJ berasal dari mineral seperti monasit dan senotim. Ketersediaan LTJ di kerak bumi relatif sedikit, tersebar dan jarang terjadi dalam bentuk bijih. Dalam penelitian ini bahan baku yang digunakan adalah campuran konsentrat LTJ yang berasal dari PT. Monokem Surya. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh konsentrasi H2C2O4, kecepatan pengadukan dan suhu terhadap kemurnian dan pemungutan LTJ dari campuran konsentrat LTJ. Percobaan dilakukan dalam lima langkah: (1) Fusi alkali, proses dilakukan selama 3 jam pada suhu 450oC, dengan rasio padatan NaOH terhadap campuran konsentrat LTJ sebesar 1:1, untuk memutuskan ikatan fosfat; (2) ) Pelindian fosfat dalam produk fusi alkali menggunakan aquadest pada suhu 80oC; (3) Residu pelindian aquadest dilakukan proses perlindian menggunakan 6 M HCl selama 2 jam untuk melarutkan LTJ pada 90oC; (4) Menghilangkan kotoran seperti uranium dan thorium dengan mengendapkannya menggunakan NH4OH pada pH 1; (5) Presipitasi LTJ dari filtrat yang dihasilkan dari butir (4) menggunakan H2C2O4. Didapatkan hasil LTJ dengan kemurnian 96% dan pemungutan sebesar 95% pada konsentrasi H2C2O4 8,11%, kecepatan putar pengaduk 500 rpm, dan suhu 70oC.Two sources of REEs are from mineral monazite and xenotime. The availability of REEs is relatively abundant in the earth’s crust, typically dispersed, and rarely occur in ores. In this study as raw material was a mixed rare earth concentrate from Monokem Surya Ltd. The purposes of this research were to determine the effect of concentration H2C2O4, stirring speed, and temperature regarding to purity and recovery REEs from the mixed rare earth concentrate. The experiments were conducted in five steps:(1) Alkaline fusion, the process was performed about 3 hours at 450oC, with ratio of NaOH solid to the mixed rare earth concentrate sand was 1:1, in order to break phosphate bonds;(2) Leaching of phosphate in alkaline fusion product using aquadest at 80 oC; (3) Aquadest leaching residue was leached using 6 M HCl for 2 hours to dissolve REEs at 90 oC; (4) Removal of impurities such as uranium and thorium by precipitating them using NH4OH at pH 1; (5) Precipitation of REEs from filtrate produced from point (4) using H2C2O4. The results of REEs with 96% purity and 95% recovery was obtained at concentration H2C2O4 8,11%, stirring speed 500 rpm, and temperature 70oC.
Recovery of Rare Earth Elements and Yitrium from non-Magnetic Coal Fly Ash using Acetic Acid Solution Hotden Manurung; Widya Rosita; I Made Bendiyasa; Agus Prasetya; Ferian Anggara; Widi Astuti; Dagus Resmana Djuanda; Himawan Tri Bayu Murti Petrus
Jurnal Metal Indonesia Vol 42, No 1 (2020): Metal Indonesia
Publisher : Balai Besar Logam dan Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (335.591 KB) | DOI: 10.32423/jmi.2020.v42.35-42

Abstract

The increasing need of REY has been observed in industries such as catalyst industry, metallurgy, military, health and renewable energy resources. REY such as Ce, Nd, Y, and Eu has a prominent evidence to improve material properties such as high electropositive, good conductivity and renewable energy. Due to this increasing need of REY, exploration of alternative source has been conducted. One of the promising alternative sources is coal fly ash. The conventional method to recover REY from coal fly ash using inorganic acids is harmful to the environment. Thus, the exploration of REY extraction from coal fly ash using organic acid has been proposed in this study. The leaching agent was acetic acid applied for all operating condition. Regarding to the mineralization of REY in the form of siliceous minerals (non-magnetic coal fly ash). Silicate digestion was conducted using sodium hydroxide 8 M with solid-to-liquid of 25% to decompose the siliceous mineral. Further, the REY bound siliceous mineral will change to REY(OH)3. Temperature as one of the operating conditions was varied. The maximum recovery of leaching 20.58 %, 43.53 %, 17.38%, 40.96 %, 18.45 % and 32.74 % were achieved for Ce, Dy, La, Nd, Y and Yb respectively at temperature of 90 0C pH 1.74 and 120 minutes. For some metals, increasing the temperature higher than 70 0C does not provide any significant effect for REY recovery such as La and Ce.
Co-Authors Achmad Roesyadi Adha Priyawan, Adha Agus Haerudin Agus Prasetya Agus Prasetya Ahmad Tawfiequrrahman Yuliansyah Akbar Yulandra Althea Farina Atmaja, Althea Farina Ardyanto Wijaya Arifudin Idrus Arini Nur Utami Aufa Rai Adiatama Aulia Pertiwi Tri Yuda Bangun, Aya Shika Bratakusuma, Danu Christopher Mario Hananto D Bratakusuma Dagus Resmana Djuanda Danu Bratakusuma Danu Bratakusuma Dea Anisa Ayu Besari Devi, Fatma Putrinta Dewi Purnama Sari Dewi Purnama Sari Dwi Wiji Lestari Edward Yonathan Natapraja Elsha Pamida Bahri Esti Kukuh Perbawati Fajar Nurjaman Fajar Nurjaman Fathan Bahfie Febry Yulindra Abdi Saputra Federick Dwi Putra Federick Dwi Putra Felisha Hapsari Tanujaya Felisha Hapsari Tanujaya Felix Arie Setiawan Ferian Anggara Fika Rofiek Mufakhir Fika Rofiek Mufakhir Fika Rofiek Mufakir Fika Rofiek Mufakir Fika Rofieq Mufakhir Franky Michael Hamonangan Siagian Gelar Panji Gemilar Gelar Panji Gemilar Halomoan Siagian Hendrik Setiawan Hendrik Setiawan, Hendrik Himmah Sekar Eka Ayu Agustina Hotden Manurung Hotden Manurung I Made Bendiyasa I Wayan Christ Widhi Herman Tangkas Iga Trisnawati Indra Perdana Indra Perdana Indra Perdana Istihanah Nurul Eskani Ivanna Crecentia Narulita Simanungkalit Jonas Kristanto Joni Setiawan Kevin Cleary Wanta Kevin Cleary Wanta Kevin Cleary Wanta Kevin Cleary Wanta Kurniawansyah, Firman Laksono Trisnantoro Marizka Aviana Permatasari Mita Kusumaningrum, Mita Muhammad Miftahur Rahman Nadya Fardani, Nadya Patria, Aulia Agus Radinda Bian Zaqina, Radinda Bian Ratna Frida Susanti Ratna Frida Susanti Ratna Frida Susanti Rika Ernawati Riyadi, Delfimelinda Nurul Shinta Virdhian Shinta Virdhian Slamet Sumardi Slamet Sumardi Stephen Lim Stevanus Adi Darma Surianti Surianti Sutijan Sutijan Taufik Hery Purwanto Ulin Herlina Ulung Sutopo Vincent Sutresno Hadi Sujoto Wahyu Rachmi pusparini Wahyu Yun Santoso Wanta, Kevin Cleary Widi Astuti Widi Astuti Widi Astuti Widi Astuti Widi Astuti Widi Astuti Widi Astuti Widi Astuti Widi Astuti Widi Astuti Widi Astuti Widi Astuti Widi Astuti Widi Astuti Widi Astuti Widya Rosita Wijaya, Ardyanto Wiratni Wiratni Wiratni Wiratni, Wiratni Y Iskandar Yogi Tri Putra Nasution Yusuf Iskandar