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Nuryoto
Jurusan Teknik Kimia Fakultas Teknik, Universitas Sultan Ageng Tirtayasa
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OBSERVASI PENURUNAN TEKANAN (PRESSURE DROP) PADA SISTEM PERPIPAAN: PENGARUH PANJANG DAN DIAMETER PIPA, ELBOW, DAN TEE Nuryoto, Nuryoto; Rahmayetty, Rahmayetty; Yusuf Rumbino; Astrilia Damayanti; Doni Rahmat Wicakso
Jurnal Rekayasa Mesin Vol. 15 No. 2 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i2.1666

Abstract

The piping system is a fundamental process equipment in the industry. The phenomena that occur in piping systems vary depending on the conditions of the pipes and the fluids flowing through them. Therefore, research related to piping systems requires attention to minimize and understand the occurring phenomena. There have been many studies related to piping analysis, but what sets this research apart from previous studies is that it focuses on examining the contribution of each component of the piping system to friction loss-pressure drop. Furthermore, the data obtained is used to determine the deviation or difference between experimental data and theoretical calculations. This research aims to study the correlation between friction loss and pressure drop in piping systems (including pipes, elbows, and tees) and to determine the extent of deviation between theoretical calculations and actual conditions, as well as to understand the trend of such deviations. Results show that as the length of the pipe increases, there is an increase in pressure drop, especially for pipe lengths of 0.6, 0.8, and 1.4 meters, the values are 275.26, 367.0, and 642.27 Pa over density, respectively. Conversely, as the pipe diameter increases, the resulting pressure drop becomes smaller, namely for pipe diameters of 0.5, 0.75, and 1.25 inches, the values are 266.64, 93.33, and 13.33 Pa over density, respectively. In the observation of the influence of fittings, it is shown that the pressure drop generated by elbows is greater than that of tees, with values of 26.66 and 13.33 Pa over density, respectively. When calculating the percentage deviation, there is a tendency for longer pipes and larger diameters will increase the percentage of deviation. For pipe lengths of 0.4, 0.6, and 1.4 meters, the percentage deviations are 3.23, 10.11, and 17.50%, respectively. For variations in pipe diameter, the percentage deviations are 3.23, 41.74, and 47.15% for diameters of 0.5, 0.75, and 1.25 inches, respectively. Meanwhile, the percentage deviation for tees is greater than that of elbows, with values of 84.78% (for elbows) and 185.02% (for tees).
Characterization of corn starch edible films by the addition of chitosan as a vegetable oil packaging material Wicakso, Doni Rahmat; Fortuna, Dwi; Hernadin, Ivan Aldino; Nuryoto, Nuryoto; Rumbino, Yusuf; Damayanti, Astrilia
Konversi Vol 12, No 2 (2023): OKTOBER 2023
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v12i2.15959

Abstract

Abstract - Vegetable oil packaging materials use a type of synthetic polymer that is harmful to the body and the environment. Edible film as an environmentally friendly packaging material can be a solution for vegetable oil packaging material. Edible films are made from natural ingredients such as starch and chitosan. The objective of this study is to determine the best conditions of addition of chitosan in making edible film in terms of its physio-chemicals and determine the best glycerol concentration in terms of its physical properties. The composition of raw materials in the form of corn starch is 5 grams and the composition of chitosan is (0,5%, 1% and 1,5% b/v). Glycerol concentrations vary in (4%, 5% and 6% v/v). the result of the analysis of the physical properties of the edible film through the analysis of the physical tensile strength test, namely the best composition on the addition of 1 gr chitosan as well as the elongation analysis at termination. Analysis of the solubility of the edible film at a concentration of 1 gr as well the analysis of water vapor permeability. Whereas the analysis of the best antioxidant capacity in the composition of chitosan is 1,5 gr. Keywords: corn starch, chitosan, edible film  
Study of Esterification Reaction Between Ethanol and Acetic Acid Using Homogeneous and Heterogeneous Catalyst Nuryoto, Nuryoto; Amaliah, Alin Rizka; Puspitasari, Anita; Ramadhan, Anggara Diaz
World Chemical Engineering Journal VOLUME 4 NO. 2 DECEMBER 2020
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v4i2.8952

Abstract

The Ethyl acetate is the final product of esterification reaction between ethanol and acetate acid which usually used as a solvent. Catalysts are used to boost the esterification reaction rate, mostly the homogenous catalyst (acid liquid catalyst) is used. The use of homogeneous catalyst needs quite long process to separate, that is the reason why using the heterogeneous catalyst is the alternate way. The purpose of this research is to compare the performance of homogeneous catalyst (sulphuric acid) and heteregenous catalyst (natural zeolite from Bayah) by variating the factors that has an impact on reaction. The reaction was happened in batch reactor by variating the speed of agitation speed in range 500-700 rpm and the catalyst molecules size 60 mesh and 100 mesh for the solid catalysts. The goal of the variation is to maximize the reactant mass transfer to the active site of the catalyst. The result of this research shows that on the agitation speed of 700 rpm and 100 mesh Bayah natural zeolite is able to yield bigger conversion of acetate acid compared to using the sulphuric acid catalyst, which are 45.03% and 15.19% .
Kinetic Study of Ammonium Desorption using Natural Zeolites from Cikalong Abdusattar, Thareqa; Hadi, Abdul; Nuryoto, Nuryoto; Kurniawan, Teguh
World Chemical Engineering Journal VOLUME 5 NO. 1 JUNE 2021
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v5i1.12103

Abstract

Household liquid waste which contains ammonium is one of the major contributors to the wastewater effluent. The aim of investigation is to characterize and determine the adsorption capacity of natural zeolites from Cikalong for ammonium removal.  The effect of cations type, K+, Mg2+ and Ca2+, on ammonium desorptions was studied. Kinetic desorption study was also performed and fitted with various kinetic models. According to X-ray diffraction (XRD) pattern, the Cikalong natural zeolites were mordenite and clinoptilolite dominant type.  The morphology of the mordenite phase was appeared as needles shape. The ratio of Si to Al was 6.86 according to X-ray fluorescence (XRF). The surface area was 187 m2/g which was determined by Brunauer–Emmett–Teller (BET) model. Desorption using K+ solution showed the shortest time and the highest rate for ammonium desorption. The calculation using nonlinear method was carried out to optimize the desorption kinetic parameters. The pseudo 1st order desorption kinetics model showed the smallest error with sum of squared error (SSE) 0.00209.
EFFECT OF THE ADDITION OF ORANGE PEEL POWDER ON THE PHYSICAL AND MECHANICAL PROPERTIES OF POLYLACTIC ACID (PLA)/CELLULOSE ACETATE (CA) FILM COMPOSITES Achmad Syarafuddin As-syirazi; Geraldi Riantoro; Farhan Alif Syahjaya; Rahmayetty Rahmayetty; Nuryoto Nuryoto
Jurnal Rekayasa Kimia & Lingkungan Vol 18, No 2 (2023): Jurnal Rekayasa Kimia & Lingkungan (December, 2023 )
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v18i2.34178

Abstract

Conventional plastics are already a popular packaging material in society, but they have a harmful influence on the environment. As a result, there is a need for environmentally friendly polymers that are raw from nature and biodegradable alternatives to traditional plastics, one of which is raw plastic Polylactic Acid (PLA) coupled with Cellulose Acetate (CA) and Tween 80 as a compatibilizer. The goal of this research was to find the best ratio of orange skin powder to PLA/CA with the compatibilizer Tween 80 to improve the physical, mechanical, and antibacterial properties of the composite film. The method used is solvent casting with a mass ratio of PLA/CA 6: 4 with the addition of Tween 80 2%, and the addition of orange peel powder with variations of 2, 4, 6, and 10 % w/w to the weight of PLA. The tests carried out include FTIR, SEM, XRD, DSC-TGA, mechanical tests (tensile strength and elongation at break), swelling tests, and antibacterial tests. The results showed that the PLA/CA/Tween 80 film composite has a fairly smooth surface with a small cavity, capable of degrading to a temperature of 546.57C. Regarding the mechanics, the best film composites were identified at a variation of 6% with tensile strength of 4.05 MPa and elongation at break reaching 11.2% with a fairly small water absorption and this variation did not show antibacterial activity.
PENGARUH SUHU DAN PERBANDINGAN PEREAKSI PADA SINTESIS TRIASETIN DARI GLISEROL DAN ASAM ASETAT Soni Candra; Nuryoto Nuryoto; Widya Ernayati Kosimaningrum
JURNAL INTEGRASI PROSES Vol 13, No 2 (2024)
Publisher : JURNAL INTEGRASI PROSES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/jip.v13i2.25857

Abstract

Cadangan energi fosil terus mengalami penurunan dan konsumsi terus mengalami peningkatan, sehingga menciptakan energi alternatif dapat menjadi pilihan untuk mengatasi kondisi tersebut. Salah satu energi alternatif yang sekarang masif dikembangkan adalah biodiesel. Sintesis biodiesel menghasilkan gliserol sebagai produk samping. Ketika produksi biodiesel mengalami peningkatan, akan diikuti dengan semakin meningkatnya gliserol. Pengolahan gliserol harus dilakukan untuk menghindari dampak negatif yang ditimbulkan, salah satunya dengan mengubahnya menjadi produk triasetin. Triasetin sendiri dapat dimanfaatkan sebagai bahan aroma makanan, pelarut pada parfum, plasticizer untuk resin, dan dapat juga digunakan sebagai zat aditif dalam bahan bakar cair sebagai anti knocking pada mesin. Tujuan dari kajian ini adalah melakukan reviu dan menganalisis dampak suhu reaksi dan perbandingan pereaksi pada sintesis triasetin berdasarkan referensi. Hasil kajian menunjukkan bahwa semakin meningkat perbandingan pereaksi dan suhu reaksi akan diikuti dengan kenaikan konversi produk triasetin.
PENINGKATAN PARTISIPASI MASYARAKAT DI SEKITAR KAWASAN INDUSTRI CILEGON ANYER MERAK (CAM) MELALUI PEMBERDAYAAN LIMBAH NON-ORGANIK INDUSTRI MENJADI PRODUK RUMAHAN SEBAGAI UPAYA MEWUJUDKAN KOTA INDUSTRI RAMAH LINGKUNGAN (Green Industrial City) Suhendar, Suhendar; Dwinanto, Dwinanto; Nuryoto, Nuryoto
Jurnal Pengabdian Dinamika Vol 3, No 1 (2016)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/dinamika.v3i1.8859

Abstract

Program Kuliah Kerja Nyata-Pembelajaran Pemberdayaan Masyarakat (KKN-PPM) merupakan salah satu cara untuk mewujudkan sinergi antara Perguruan Tinggi-Industri-Masyarakat. Program ini sangat membantu mewujudkan Corporate Social Responsibility (CSR)-nya industri, sehingga lebih bermanfaat keberadaannya bagi masyarakat di lingkungan sekitar kawasan industri. Tujuan dan target capaian KKN-PPM bagi masayarakat di sekitar kawasan industri Cilegon-Anyer-Merak (CAM), yaitu: 1) Meningkatkan kemampuan mahasiswa dalam penerapan bidang keahliannya untuk membantu mewujudkan tanggung jawab industri dalam memberdayakan masyarakat, 2) Meningkatkan partisipasi dan keterampilan masyarakat di sekitar kawasan dalam memanfaatkan limbah industri non-organik, 3) Memasyarakatkan pemanfaatan teknologi sederhana dan tepat guna untuk mengolah limbah non-organik industri menjadi produk berguna dan ramah lingkungan, 4) Melatih masyarakat cara mendaur ulang sampah menggunakan teknik sederhana, ekonomis, dan ramah lingkungan untk mengolah bahan baku limbah non-organik industri, dan 5) Mempublikasikan hasil KKN-PPM sebagai contoh baik untuk dikembangkan lebih lanjut oleh masyarakat, khususnya di kawasan sejenis lainnya. Metode yang digunakan dalam kegiatan KKN-PPM adalah Penyuluhan, Pelatihan, Pendampingan, dan Monitoring (P3M) penerapan teknologi tepat guna untuk mengolah limbah non-organik industri. Bekerjasama dengan mitra, Tim DPL memberikan pembekalan dan melatihkan pengetahuan / teknologi tepat guna yang baru kepada mahasiswa peserta sebelum mereka diterjunkan ke lokasi.
Pengaruh Penambahan Kamper sebagai Aditif terhadap Karakteristik dan Emisi Gas Buang Mesin Berbahan Bakar Bensin Nuryoto; Sobarsah, G. Awaludin; Rahmayetty, Rahmayetty; Jayanudin
Jurnal Teknologi Lingkungan Vol. 25 No. 2 (2024)
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jtl.2024.1055

Abstract

Abstract The automotive industry, synonymous with motorized vehicles, has experienced rapid development, and every motorized vehicle requires fuel as its power source. To ensure optimal engine performance, some individuals add additives to fuel using camphor. Research on camphor as a fuel additive is not new, as it has been studied by several researchers before, although with the use of premium gasoline in previous studies. In this study, we observed a different type of fuel, namely "pertalite," and conducted tests to assess camphor's solubility in pertalite, variations in octane number, and their impact on exhaust gas emissions. Therefore, the study aimed to understand the effects of camphor addition on the increase in octane number, changes in fuel characteristics, camphor dissolution time, and emissions from exhaust gas. The study involved varying camphor additions from 1 to 8% in pertalite fuel. The results of the study indicate that the use of camphor as a fuel additive in pertalite fuel does not have a negative impact on the environment in terms of exhaust gas emissions. However, it is not fuel-efficient due to the minimal increase in octane number, only rising from 90 to 90.4 (with an 8% camphor addition). Furthermore, it causes fluctuations in vapor pressure, ranging from 45 to 58.8 kPa, which can affect the combustion process in the chamber. On the other hand, the dissolution time of camphor is relatively long, requiring 5–26 minutes for concentrations of 1–8%, making it inefficient. The study results are expected to provide initial insights for developing other additives, such as alcohol, which is a renewable and safe chemical.   Abstrak Industri otomotif yang identik dengan kendaraan bermotor mengalami perkembangan yang sangat pesat, dan setiap kendaraan bermotor membutuhkan bahan bakar sebagai pengeraknya. Agar performa mesin tetap terjaga baik, ada sebagian masyarakat menambahkan aditif ke dalam bahan bakar menggunakan kamper. Penelitian terkait kamper sebagai aditif bahan bakar bukanlah hal baru, karena telah dilakukan riset oleh beberapa peneliti sebelumnya, tetapi menggunakan bahan bakar jenis premium. Penelitian dilakukan dengan melakukan pengamatan menggunakan bahan bakar yang berbeda yaitu jenis pertalite, serta melakukan pengujian kelarutan kamper ke dalam pertalite, perubahan karakteristik, bilangan oktana, serta pengaruhnya terhadap emisi gas buang. Oleh karena itu, penelitian ini mempunyai tujuan untuk menguji dan mengetahui pengaruh penambahan kamper terhadap peningkatan bilangan oktana, perubahan karakteristik bahan bakar jenis pertalite, waktu pelarutan kamper, dan emisi pada gas buang. Pengamatan dilakukan dengan memvariasikan penambahan kamper sebesar 1–8% pada bahan bakar pertalite. Hasil penelitian menunjukan bahwa penggunaan aditif berupa kamper pada bahan bakar pertalite tidak memiliki dampak negatif terhadap lingkungan terkait emisi gas buang, tetapi tidak ekonomis karena peningkatan bilangan oktana yang dihasilkan sangat kecil yaitu hanya meningkat dari 90 menjadi 90,4 (pada penambahan kamper sebanyak 8%). Selain itu berakibat fluaktiatif terhadap tekanan uap yaitu dari 45 menjadi 58,8 kPa, selanjutnya turun lagi dibawah 58,8 kPa, yang mana akan mempengaruhi proses pembakaran pada ruang bakar. Pada sisi yang lain, waktu pelarutan kamper tergolong lama karena membutuhkan waktu 5–26 menit untuk kadar 1–8%, sehingga menjadi tidak efisien. Hasil penelitian ini diharapkan dapat menjadi informasi awal untuk pengembangan aditif yang lain seperti alkohol yang merupakan bahan kimia yang dapat diperbarui dan aman.
Uji Coba Resin Penukar Ion Indion 225 H sebagai Adsorben pada Penurunan Kadar Kromium di Dalam Air Limbah Nuryoto, Nuryoto; Alamudin, Dimas; Abdullah, Aldi; Bagaskara, Rafiif Nur Tahta
Jurnal Teknologi Lingkungan Vol. 26 No. 1 (2025)
Publisher : BRIN Publishing (Penerbit BRIN)

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

Abstract

ABSTRACT Chromium is extensively used in the leather tanning process, with only 60 - 70% utilized, leaving the remainder as waste. Effective waste management is essential to mitigating environmental impact. This study aims to conduct tests and understand the effectiveness of Indion 225 H as an adsorbent for removing chromium from wastewater by analyzing variables such as the mass of adsorbent per wastewater volume and contact time. The study seeks to optimize chromium removal and develop a mathematical model to explain the adsorption process.  Experiments were conducted using a batch system with adsorbent masses ranging from 0.1 to 0.6 grams per 20 ml of wastewater and contact time from 3 to 5 hours. Results indicate that Indion 225 H can reduce chromium content in the solution by 33%, with optimal conditions being a contact time of 5 hours and adsorbent chromium content in the solution by 33%, with optimal conditions being 0.6 grams per 20 ml of wastewater. The Langmuir Isotherm model accurately describes the adsorption phenomena, and the adsorption kinetics follow a second-order model. ABSTRAK Gambut tropis memiliki nilai ekologis tinggi bagi ekosistem global, dan keberlangsungannya bergantung pada keterlibatan masyarakat. Dukungan masyarakat merupakan elemen penting keberhasilan pengembangan ekowisata di Kesatuan Hidrologi Gambut (KHG) Kahayan-Sebangau. Tidak hanya sebagai penerima manfaat, masyarakat berperan menjaga ekosistem. Dukungan dapat diwujudkan melalui partisipasi aktif dalam perencanaan dan pelaksanaan ekowisata. Partisipasi tersebut bermanfaat di bidang ekonomi, sosial, maupun ekologis seperti keberlangsungan ekowisata, mencegah potensi konflik, dan degradasi lingkungan. Penelitian ini meneliti faktor-faktor ekonomi, sosial, dan lingkungan yang memengaruhi dukungan masyarakat lokal terhadap pariwisata ekologis di lahan gambut Kalimantan Tengah. Penelitian menggunakan pendekatan metode campuran yang menggabungkan data kualitatif dan kuantitatif digunakan, dan dianalisis melalui partial least squares-structural equation modeling (PLS-SEM). Temuan penelitian menunjukkan dampak ekonomi dan sosial berpengaruh signifikan terhadap dukungan masyarakat, ketika dampak lingkungan memoderasi hubungan yang terjadi. Dampak ekonomi positif meliputi peningkatkan lapangan kerja, pendapatan masyarakat, dan pembangunan infrastruktur pariwisata. Secara sosial meliputi peningkatan interaksi dan program pemberdayaan masyarakat. Namun, ada juga dampak negatif seperti pembangunan yang tidak seimbang, konflik antar masyarakat, dan degradasi lingkungan. Data dikumpulkan melalui wawancara dan kuesioner kepada 100 masyarakat lokal, jawaban menggunakan skala Likert dan responden mewakili berbagai kelompok umur, tingkat pendidikan, dan sektor pekerjaan. Analisis menunjukkan validitas konvergen dan diskriminan terpenuhi dengan nilai loading factor >0,708 dan nilai average variance extraction (AVE) >0,5. Model penelitian memenuhi kriteria fit standardization root mean square (SRMR) <0,1. Kesimpulan penelitian bahwa dukungan masyarakat lokal sangat bergantung pada dampak ekonomi, sosial, dan lingkungan. Mengembangkan ekowisata yang memperhatikan ketiga aspek tersebut dapat meningkatkan kesejahteraan masyarakat dan kelestarian lingkungan.  
Optimization of Acid Degumming of Crude Rice Bran Oil (CRBO) on Phospholipid Removal Using Response Surface Methodology (RSM) Damayanti, Astrilia; megawati, megawati; Winaningsih, Ima; Wicakso, Doni Rahmat; Nuryoto, Nuryoto; Rumbino, Yusuf; Prasetyo, Ridwan Anung; Rizki, Muhammad Prabu
Jurnal Rekayasa Kimia & Lingkungan Vol 20, No 1 (2025): Jurnal Rekayasa Kimia & Lingkungan (June, 2025)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v20i1.43691

Abstract

Rice bran, a byproduct of milling rice, has 60% nutritional content and potential for processing into higher-selling goods like rice bran oil (RBO). Degumming is the first stage of refining crude oil. This research aims to remove phospholipids in crude rice bran oil (CRBO) by optimizing acid degumming. Three variables were optimized in this study using Design Expert v13's response surface methodology (RSM) employing central composite design (CCD) experimental design: the amount of phosphoric acid (0.1, 0.15, and 0.2 %w/w), the degumming temperature (50, 70, and 90 C), and the degumming time (20, 30, 40 minutes). The experimental values and predicted results did not correlate well with percentages (%) of error, with more than 50% occurring in 4 of 19 runs. The model's p-value of 0.4939 ( 0.05) is non-significant, with the coefficient determination, R2 being 0.5026. Optimization with desirability value ( 0.5) results showed a phospholipid removal response of 40.479% under conditions of adding 0.1%w/w phosphoric acid, temperature of 83.21 C, and degumming time of 40 minutes, which were determined by Derringers methodology..
Co-Authors Abdul Hadi Abdullah, Aldi Abdusattar, Thareqa Achmad Syarafuddin As-syirazi Agus Rochmat Alamudin, Dimas Alya Sholikhatul Choerunnisa Amaliah, Alin Rizka Anggara Diaz Ramadhan Anita Diyanah Anton Irawan Astari, Raisa Astrilia Damayanti Bagaskara, Rafiif Nur Tahta Diana Alfi Jayanti Doni Rahmat Wicakso Dwinanto Dwinanto Erlin Filiandini Erlin Findilina Fajar Gumelar Farhan Alif Syahjaya Fortuna, Dwi Geraldi Riantoro Ghani Naufal Gustiana Awaludin Sobarsah Hakiki, Muhammad Hary Sulistyo Hary Sulistyo Hary Sulistyo Hary Sulistyo Hendra, Hendra Heri Heriyanto Hernadin, Ivan Aldino Hesti Prihastuti Indar Kustiningsih Indra Perdana Indra Perdana Indra Perdana Isti Uswatun Hasanah Jayanudin Jayanudin Jayanudin Julvita, Herliza Kawiarso Kawiarso Makiyi, Muhammad Megawati - Meri Yulvianti Muchamad Ismettulloh Muhammad Fadjri Muhammad Iqbal Sobari, Muhammad Iqbal Muhammad Ridwan Mubarok Muhammad Triyogo Adiwibowo Nia Mas’ulunniah Nindya Carolina C.S Perdana, Indra Prasetyo, Ridwan Anung Prayogatama, Adhi Puspitasari, Anita Raffli Nurmuhammad Rahmawati, Leli Rahmayetty Rahmayetty Rahmayetty, Rahmayetty Ramadani, Putri Dwi Ramadhan, Anggara Diaz Retno Hadi Winoto Rizki, Muhammad Prabu Rudi Hartono Sahrul Rijal, Sahrul Saiful Bahri Sediawan, Wahyudi Budi Shera D. Andini Soni Candra Suhendar Suhendar, Suhendar Sulistyo, Hary Suprihastuti, Sri Rahayu Suripno Suripno Sutijan Syifa Fauziah Teguh Kurniawan Teguh Kurniawan Tita, Lorenso Caetano Manek De Wahyu Budi Setiawan Wahyudi Budi Sediawan Wahyudi Budi Sediawan Wahyudi Budi Sediawan Widya Ernayati Kosimaningrum Wijoyono Setionegoro Winaningsih, Ima Yulvianti, Meri Yusuf Rumbino