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Kajian Daur Hidup (Life Cycle Assessment) dalam Produksi Pupuk Urea: Studi Kasus PT Pupuk Kujang Joni Safaat Adiansyah; Nailawati Prastiya Ningrum; Dyan Pratiwi; Hadiyanto Hadiyanto
Jurnal Ilmu Lingkungan Vol 17, No 3 (2019): November 2019
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (155.433 KB) | DOI: 10.14710/jil.17.3.522-527

Abstract

Pupuk urea adalah merupakan salah satu jenis pupuk yang paling banyak digunakan oleh petani di Indonesia. Total penggunaan pupuk urea selama tahun 2018 yang tercatat pada Kementerian Perindustrian Indonesia adalah sejumlah 6,27 Juta ton atau mengalami peningkatan 5% dari tahun sebelumnya. Salah satu pabrik yang menghasilkan pupuk urea adalah PT Pupuk Kujang di Cikampek Jawa Barat. Tujuan dari studi ini adalah untuk mengidentifikasi dampak lingkungan potensial yang dihasilkan dari produksi 50 Kg pupuk urea. Metode yang digunakan dalam kajian dampak daur hidup (Life Cycle Impact Assessment) adalah CML-IA dengan 11(sebelas) parameter yaitu abiotic depletion dan abiotic depletion (fossil fuel), global warming (GWP100), ozone layer depletion, human toxicity, fresh water dan marine aquatic ecotoxicity, terrestrial ecotoxicity, photochemical oxidation, acidification, dan eutrophication,  Adapun batasan sistem menggunakancradle to grave yang memperhitungakn bahan dasar, proses produksi, transportasi dan pengelolaan limbah (karung bekas pupuk). Dari hasil analisa didapatkan bahwa proses produksi memberikan kontribusi dampak paling besar dibandingkan dengan pengelolaan limbah sisa karung (landfill). Proses produksi memberikan kontribusi terhadap dampak potensial lingkungan pada kisaran 99,14 – 100 persen dari total dampak yang di hasilkan. Sebagai tambahan bahwa dampak yang ditimbulkan pada proses di pabrik ammonia akan memberikan kontribusi lebih besar pada kisaran 22-37 persen lebih besar dibandingkan dengan proses di pabrik urea.Dari hasil analisa dengan memanfaatkan grafik jaringan (networking graph) pada program SimaPro juga menunjukkan bahwa environmental hotspotsdari daur hidup pupuk urea disebabkan oleh penggunaan gas alam, katalis molybdenum, penggunaan listrik dari Perusahaan Listrik Negara (PLN), penggunaan polypropylene dalam material karung, dan transportasi. Dengan mempertimbangan environmental hotspot maka tindakan perbaikan berkelanjutan perlu dilakukan baik berupa  audit energi maupun pengelolaan penggunaan katalis.
Peningkatan Produksi Mocaf dengan Rancang Bangun Alat Pemotong Widayat Widayat; H Hadiyanto; Hantoro Satriadi; Meiny Suzery; Irawan Arif Budianto
Jurnal Ilmu Lingkungan Vol 17, No 3 (2019): November 2019
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (824.075 KB) | DOI: 10.14710/jil.17.3.515-521

Abstract

Singkong merupakan tanaman pangan berupa perdu dengan nama lain ubi kayu, singkong atau kasape. Singkong dapat diubah menjadi tape, alkohol, MOCAF (Modified Cassava Flour) dan juga diambil tepung tapiokanya. MOCAF adalah tepung singkong yang telah mengalami proses modifikasi baik fisika, kimia atau biologi. PT Mocaf Solusindo merupakan produsen MOCAF dan berdomisili di Sukoharjo. Dalam perkembangan telah melakukan pemberdayaan masyarakat Kecamatan Matesih Kabupaten Karanganyar untuk mengolah singkong menjadi produk MOCAF. Penelitian ini berhasil melakukan suatu rancang bangun alat pemotong singkong bermesin. Alat pemotong terdiri dari pisau pemotong yang dihubungkan oleh tuas dan digerakkan leh motor penggerak. Alat ini dapat meningkatkan kapasitas pemotongan yang semula hanya 50-56 kg per jam menjadi 250 kg/jam. Dengan demikian dapat meningkatkan 0mzet dari PT. Mocaf Solusindo dari Rp. 21.000.000, menjadi Rp.35.000.000,- per bulan.
Effect of NaOH on biogas production under SSAD conditions along with kinetics studies Hashfi Hawali Abdul Matin; Hadiyanto Hadiyanto
Jurnal Ilmu Lingkungan Vol 18, No 2 (2020): Agustus 2020
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.18.2.319-322

Abstract

Indonesia is a large rice producing country where from these activities it produces waste in the form of rice husk. Rice husk cannot be degraded by itself due to the lignin content contained in the rice husk. Therefore, treatment is carried out to destroy the lignin content and use it as alternative energy in the form of biogas. The study was conducted at a laboratory scale at room temperature, preliminary treatment using 3% NaOH under the SSAD conditions of 27.5% TS and then biogas production was measured once every two days for 90 days. Furthermore, the results of biogas production were observed between biogas with NaOH and without NaOH and carried out a study of the kinetics. The result is that biogas production with NaOH is higher, reaching 59.2 mL/grTS whereas without NaOH at 14.7 mL/grTS. The results of kinetic studies using mathematical modeling through the Gompertz equation, the variable with NaOH is known to have a maximum biogas production of 63.9 mL/grTS, a daily biogas production rate of 0.97 mL/grTS.day and the initial formation of biogas significantly on the 8th day.
Application of Tin(II) Chloride Catalyst for High FFA Jatropha Oil Esterification in Continuous Reactive Distillation Column Ratna Dewi Kusumaningtyas; Imam Novrizal Aji; Hadiyanto Hadiyanto; Arief Budiman
Bulletin of Chemical Reaction Engineering & Catalysis 2016: BCREC Volume 11 Issue 1 Year 2016 (April 2016)
Publisher : Department of Chemical Engineering - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (519.088 KB) | DOI: 10.9767/bcrec.11.1.417.66-74

Abstract

The application of heterogeneous solid acid catalysts in biodiesel production has become popular and gained significant attention over the last few years. It is since these types of catalysts hold the benefits in terms of easy separation from the product, reusability of the catalyst, high selectivity of the reaction. They are also considered sustainable and powerful particularly in organic synthesis. This work studied the use of tin(II) chloride as solid Lewis acid catalyst to promote the esterification reaction of high Free Fatty Acid (FFA) jatropha oil in continuous reactive distillation column. To obtain the optimum condition, the influences of reaction time, molar ratio of the reactant, and catalyst were investigated. It was revealed that the optimum condition was achieved at the molar ratio of methanol to FFA at 1:60, catalyst concentration of 5%, and reaction temperature of 60°C with the reaction conversion of 90%. This result was significantly superior to the identical reaction performed using batch reactor. The esterification of high FFA jatropha oil using reactive distillation in the presence of tin(II) chloride provided higher conversion than that of Amberlyst-15 heterogeneous catalyst and was comparable to that of homogenous sulfuric acid catalyst, which showed 30 and 94.71% conversion, respectively. The esterification reaction of high FFA jatropha oil was subsequently followed by transesterification reaction for the completion of the biodiesel production. Transesterification was carried out at 60 °C, molar ratio of methanol to oil of 1:6, NaOH catalyst of 1%, and reaction time of one hour. The jatropha biodiesel product resulted from this two steps process could satisfy the ASTM and Indonesian biodiesel standard in terms of ester content (97.79 %), density, and viscosity. 
Preparation and Characterization of Anadara Granosa Shells and CaCO3 as Heterogeneous Catalyst for Biodiesel Production Hadiyanto Hadiyanto; Sri Puji Lestari; Widayat Widayat
Bulletin of Chemical Reaction Engineering & Catalysis 2016: BCREC Volume 11 Issue 1 Year 2016 (April 2016)
Publisher : Department of Chemical Engineering - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (373.222 KB) | DOI: 10.9767/bcrec.11.1.402.21-26

Abstract

Nowadays, the use of homogenous catalyst has been gradually reduced for its operational reason. The homogenous catalyst leads in difficulty of separation after the process completed and the life cycle is shorter. Therefore, most of researches are introducing heterogenous catalyst for its substitution. This research was aimed to evaluate the use of shell of Anadara granosa and CaCO3 as source of CaO based catalyst through impregnation method. The preparation of the catalyst was started by decomposition of shells and CaCO3 at temperature of 800 oC for 3 hours, followed by impregnation at 70 oC for 4 hours and then calcined at 800 oC for 2 hours. The CaCO3 based catalyst gained high yield of biodiesel (94%) as compared to Anadara granoasa based catalyst (92%). The reusability study showed that these catalysts could be used until three times recycle with 40-60% yield of biodiesel. The CaO contents of catalyst decreased up to 90% after three times recycles. 
Biodiesel Production from Nyamplung (Calophyllum inophyllum) Oil using Ionic Liquid as A Catalyst and Microwave Heating System Prima Astuti Handayani; Abdullah Abdullah; Hadiyanto Hadiyanto
Bulletin of Chemical Reaction Engineering & Catalysis 2017: BCREC Volume 12 Issue 2 Year 2017 (August 2017)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (109.482 KB) | DOI: 10.9767/bcrec.12.2.807.293-298

Abstract

Nyamplung (Calophyllum inophyllum) is a typical Indonesian plant. Its seed contains abundant inedible oil, and therefore it is potential for biodiesel feedstock. The current issues of biodiesel are longer  reaction time of oil to biodiesel through transesterification reaction and lower biodiesel yield due to ineffective use of a homogenous catalyst. This work was aimed to use an ionic liquid as a catalyst and equipped with microwave heating as the heating system in order to increase the biodiesel yield and accelerate the process. Effects of the catalyst concentration and power of microwave irradiation to the biodiesel yield were studied. The ionic liquid of 1-butyl-3-methylimidazolium hydrogen sulfate (BMIMHSO4) was used as a catalyst. The results showed that the highest biodiesel yield was achieved of 92.81% which was catalyzed by IL0.5NaOH0.5 (0.5 wt.% (BMIMHSO4) + 0.5 wt.% NaOH) with a methanol-to-oil molar ratio of 9, a reaction time of 6 minutes, and the microwave temperature was 60 °C. 
Effect of Dilute Acid and Alkaline Pretreatments on Enzymatic Saccharfication of Palm Tree Trunk Waste for Bioethanol Production Kusmiyati Kusmiyati; Sakina Tunissa Anarki; Sabda Wahyu Nugroho; Reistu Widiastutik; Hadiyanto Hadiyanto
Bulletin of Chemical Reaction Engineering & Catalysis 2019: BCREC Volume 14 Issue 3 Year 2019 (December 2019)
Publisher : Department of Chemical Engineering - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4407.282 KB) | DOI: 10.9767/bcrec.14.3.4256.705-714

Abstract

The sugar palm tree (Arenga pinnata) was abundant in Indonesia and has high cellulose contents for bioethanol production. However, the lignin content was the major drawback which could inhibit saccharification enzymes and therefore removing the lignin from the biomass is important. This paper evaluated the effects of pretreatments  using nitric acid (HNO3) and ammonium hydroxide (NH4OH) at 2 to 10% (v/v) on reducing sugar and ethanol contents and compared with the effects of steam pre-treatment. The pretreated samples were hydrolyzed using cellulase enzymes at pH 5.0 with a substrate concentration of 10% (w/v) for 24 to 72 h at 50 °C. Subsequent assessments of enzymatic saccharification following pre-treatment with 10% (v/v) HNO3 showed maximum reducing   and total sugar contents in palm tree trunk waste of 5.320% and 5.834%, respectively, after 72 h of saccharification. Following pretreatment with 10% (v/v) of NH4OH, the maximum reducing and total sugar contents of palm tree trunk waste were 2.892% and 3.556%, respectively, after 72 h of saccharification. In comparison, steam pretreatments gave maximum reducing sugar and total sugar contents of 1.140% and 1.315% under the same conditions. Simultaneous saccharification and fermentation (SSF) was conducted at 37 °C (pH 4.8) and 100 rpm for 120 h using 10% (v/v) Saccharomyces cerevisiae and cellulase enzyme with a substrate concentration of 10% (w/v). The result showed the highest ethanol content of 2.648% was achieved by using 10% (v/v) HNO3. The use of 10% (v/v) NH4OH gained a yield of 0.869% ethanol while the steam pretreatment could obtained 0.102% ethanol.  
Kinetic of Biogas Production in a Batch Anaerobic Digestion Process with Interference of Preservative Material of Sodium Benzoate Indro Sumantri; Hadiyanto Hadiyanto
Bulletin of Chemical Reaction Engineering & Catalysis 2020: BCREC Volume 15 Issue 3 Year 2020 (December 2020)
Publisher : Department of Chemical Engineering - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.15.3.9366.898-906

Abstract

Sodium benzoate is a preservative compounds which are widely used for both food and beverage products. The treatment of waste water containing this compound was normally conducted in a anaerobic digestion (AD) using a batch reactor system at a room temperature. The anaerobic process eventually produced biogas which can be used for bioenergy. This research was aimed to evaluate the production of biogas from by synthetic solution models containing sodium benzoate (SB). The experiment was performed in a variation of Mixed Liquor Suspended Solid (MLSS) of 4.8 and 7.2 g/L, and initial sodium benzoate concentration of 400, 600, and 800 mg/L. The digestion was performed at 60 days, while the biogas content was measured every 2 days. The results indicated a reduction in the cumulative biogas by the addition of sodium benzoate, compared to the control condition. Moreover, the decrease in organic loading rate (OLR) of SB in wastewater follows the first order kinetic with kinetic rate constant (k) was 0.0432 to 0.1254 (day−1) for MLSS of 4.8 g/L and 0.0276 to 0.0372 (day−1) for 7.2 g/L MLSS. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).  
Pembuatan Mikrokapsul Phycocyanin Menggunakan Maltodekstrin sebagai Bahan Pelapis dengan Metode Spray Drying Muhammad Nasyarudin Iqbal; Hadiyanto Hady
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2016: Prosiding SNTKK 2016
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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

Abstract

Microalgae have been considered aspotential source of nutritional value. Phycocyanin is one of high added value compound extracted from microalgae that can be used as pharmaceutical products, coloring agent and food nutrition enhancer. Therefore, the potential of phycocyanin need to be explored and developed for its use as an active ingredient in functional food. However, the application of phycocyanin as active compounds in functional foods is eventually accompanied by a stability issue since it is vulnerable to light, moisture content and temperature resulting in the degradation of proteins. Microencapsulation is an effective and economical method to maintain the stability of phycocyanin. One common method of microencapsulation isspray drying, while maltodextrin is the common coating material for spray drying. This study aims to describe the potential of spray drying for phycocyanin encapsulation process. Furthermore, the  characterization of microcapsules psychochemical properties, and evaluate the performance of the storage stability and release controls will be also described. This review discussesnumerous works about the microencapsulation of phycocyanin using maltodextrins as coating material and microencapsulation by spray dying method.
The Effects of Long-Term Storage on the Quality of Palm Oil Biodiesel and Canola Oil Biodiesel Yoyon Wahyono; Hadiyanto Hadiyanto; Mochamad Arief Budihardjo; Rifqi Ahmad Baihaqi; Ainun Nurusy Syahida
Journal of Engineering and Technological Sciences Vol. 54 No. 3 (2022)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2022.54.3.1

Abstract

Effective storage of biodiesel has proven to be a challenge, which the Indonesian government has invested billions of Indonesian rupiahs (IDR) in to overcome. It is thus important to investigate how different storage methods can affect the quality of biodiesel. The purpose of this study was to determine how storage at room temperature in the dark affects the quality of palm oil biodiesel (POB) and canola oil biodiesel (COB). POB and COB were stored in closed containers at 22 °C in the dark for 12 months. The results showed that POB was more significantly damaged than COB. This study found increases of density (POB by 51.52 kg/m3 and COB by 17.52 kg/m3), kinematic viscosity (POB by 0.67 mm2/s and COB by 0.32 mm2/s), acid value (POB by 0.27 mg-KOH/g and COB by 0.25 mg-KOH/g), total glycerol (POB by 0.58%-mass and COB by 0.60%-mass), and peroxide value (POB by 48 meq-O2/kg and COB by 54 meq-O2/kg), whereas there were decreases in fatty acid methyl esters (POB by 7.11%-mass and COB by 9.36%-mass). Gas chromatography-mass spectrometry results for POB and COB showed decreases in 9-octadecenoic acid methyl ester and 9,12-octadecadienoic acid (Z,Z)-methyl ester, and increases in 9-octadecenoic acid and 9,12-octadecadienoic acid (Z,Z). Fourier transform infrared spectroscopy (FTIR) results revealed the presence of methyl ester functional groups. The storage of biodiesel in a closed container at 22 °C in the dark can minimize biodiesel oxidation, as evidenced by the findings of this study, namely, the insignificant formation of ketone and aldehyde groups in the biodiesel oxidation process during storage, based on the results of FTIR.
Co-Authors - Hermawan - Purwanto . Widayat A Abdullah A.P. Aini Abdurrafi Alwan Achmad Chalid Afif Alfajrin Achmad Roesyadi Adhi, M. A. Adi Wibowo Adian Khoironi Afriza Ni'matus Sa'adah Afshar, Mohammad Ali Ahmadi, Mohammad Hossein Aini, Apsari Puspita Ainun Nurusy Syahida Al-Baari, Ahmad N Al-Baarri, Ahmad Ni’matullah Albertus Djoko Lesmono Alhuyi Nazari, Mohammad Amalia Farhati Anak Agung Istri Sri Wiadnyani Andono Kusuma Jati Andri C. K. Andri Cahyo Kumoro Andry Anggoro Arahim Angela Nitia Nefasa Angela Nitia Nefasa Aniek Sri Handayani Aniek Sri Handayani Anisa Widia Utami Apsari Puspita A. Arief Budiman Arief Budiman Arif Harimukti Arif Setiawan Asri Cahaya Hati Athanasia Amanda Septevani, Athanasia Amanda Avido Yuliestyan Awaluddin Hidayat Ramli Inaku Azafilmi Hakiim Aziz Jihadian Barid Bambang Cahyono Barid, Aziz Jihadian Bidi, Mokhtar Budhijanto, B. Cantika Aulia Salsabila Catur Edi Widodo D A Sari D. Ariyanti D.S. Pinundi Danny Soetrisnanto Dedi Khairunas Desiyantri Siti P. Dessy Agustina Sari Dessy Ariyanti Dessy Ariyanti Didi Dwi Anggoro Dyah Ari Wulandari Dyah Hesti Wardhani Dyan Pratiwi E Hugeng Wandono Ebrahimi, Morteza Eko Hidayanto Endang Kusdiyantini Eudia Christina Wulandari Evita Febriyanti Febio Dalanta Fianda Revina Widyastuti Figa Muhammad Octafalahanda Fitria Yuli Anggita Sari Fitriyanto, Bobby Rachmat Fitriyanto, Bobby Rachmat Fuad Muhammad Fuad Muhammad Ganang Dwi Hartanto Ghasempour, Roghayeh Hakim, Muhammad Fahmi Hamid Hamid Hantoro Satriadi Hapsoro Bagus Wicaksono Hargono Hargono Haris Nu'man Aulia Hashfi Hawali Abdul Matin Hati, Asri Cahaya Hemawan, Ferry Hendra Naldi Henna Rya Abdurachim Henna Rya Sunoko Henna Rya Sunoko Heri Cahyono Heri Sutanto Hermawan Hermawan Hoang, Anh Tuan I Made Aditya Suryajaya Iis Nurhasanah Imam Novrizal Aji Indah Kusumadewi, Indah Indro Sumantri Indro Sumatri Irawan Arif Budianto J. Jamari Jaka Windarta Jihan Nabila Joni Safaat Adiansyah Kevin Aprilio Kusmiyati Kusmiyati Le, Tri Hieu M Christwardana M Christwardana M M A Nur M. Barbosa M. Djaeni M.M. Azimatun Nur M.M. Azimatun Nur, M.M. Azimatun Marcelinus Christwardana Marcelinus Christwardana Marcelinus Christwardana Marcelinus Christwardana Marcelinus Christwardana Marcelinus Christwardana Marcelinus Christwardana Mardiyah Sari Dewi Maryono Maryono Mega Anggraeni Mega Anggraeni Meiny Suzery Miftah Aqidatul Izzah Mochamad Arief Budihardjo Moh. Djaeni Muhamad Imaduddin Muhamad Maulana Azimatun Nur Muhammad Helmi Muhammad Nasyarudin Iqbal Muhammad Zaini Mahdi Munifatul Izzati Nailawati Prastiya Ningrum Naseri, Ali Nicholas Franz Noer Abyor Handayani Pham, Minh Tuan Pham, Van Viet Pribadyo Pribadyo Prima Astuti Handayani Primadi Gayuh Laksono Putro Purwanto - Purwanto Purwanto Purwanto Purwanto Purwono Purwono Putri, Sylvia Rahmi R. Wijffels Rachmad Ardhianto Ganjar Samudro Ratna Dewi Kusumaningtyas Ratnawati Ratnawati Reistu Widiastutik Retno Wulandari Rifqi Ahmad Baihaqi Riky Yonas Riky Yonas Rini Budi Hastuti Rita Dwi Ratnani Riza Saadiah, Riza Rizal Isnanto, R RM Bagus Irawan Rochmadi, R. Rocky Adiguna Rufaida Nur Rostika S Subandriyo S Sumarno S. Suherman Sabda Wahyu Nugroho Sakina Tunissa Anarki Satrio Kuntolaksono Sestri Bela Pratiwi Setia Budi Sasongko Silviana Silviana Singgih Wibowo Siswo Sumardiono Siti Jamilatun Sri Puji Lestari Sri Widodo Agung Sueda Suhatman, Agus Suherman Suherman Sulardjaka Sulardjaka Sumarno Sumarno Thomas Triadi Putranto, Thomas Triadi Tri Retnaningsih Tri Retnaningsih Soeprobowati Tubagus Rayyan Fitra Sinuhaji Tutuk Djoko Kusworo Uray Irzandi Uray Irzandi Vimala Kamandjaja Vita Efelina Wahjono, Tri Eko Wahyu Zuli Pratiwi Widayat Widayat Widiyanto Widiyanto Wihermanto, W. Yasinta Nikita Titisari Yoyon Wahyono Yulis Hindarwati Zin Min Tun