Article Per Year (5 Year)
p-Index From 2020 - 2025
6.526
P-Index
This Author published in this journals
All Journal International Journal of Electrical and Computer Engineering International Journal of Power Electronics and Drive Systems (IJPEDS) Seminar Nasional Aplikasi Teknologi Informasi (SNATI) Lontar Komputer: Jurnal Ilmiah Teknologi Informasi International Journal of Renewable Energy Development Mechatronics, Electrical Power, and Vehicular Technology Jurnal Teknik ITS IPTEK The Journal of Engineering IPTEK The Journal for Technology and Science TELKOMNIKA (Telecommunication Computing Electronics and Control) Bulletin of Electrical Engineering and Informatics Bulletin of Electrical Engineering and Informatics Eksergi: Chemical Engineering Journal Seminar Nasional Teknik Kimia Kejuangan Seminar Nasional Informatika (SEMNASIF) Dinar: Jurnal Ekonomi dan Keuangan Islam Jurnal Ilmiah Teknik Industri Bulletin of Electrical Engineering and Informatics Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan JPPPF (Jurnal Penelitian dan Pengembangan Pendidikan Fisika) Jurnal Biodjati Jurnal Desain Interior PEDAGOGIA Indonesian Journal of Chemistry Jurnal Purifikasi JPP IPTEK (Jurnal Pengabdian dan Penerapan IPTEK) SANITAS: Jurnal Teknologi dan Seni Kesehatan Jurnal Eduscience (JES) ASEAN Journal of Chemical Engineering Indonesian Journal of Electrical Engineering and Computer Science Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences Journal of Electrical Vocational Education and Technology JAREE (Journal on Advanced Research in Electrical Engineering) Jurnal Teknik Kimia Indonesia Jurnal Nasional Teknik Elektro dan Teknologi Informasi Journal of Educational Sciences Sewagati Jurnal Ilmu Pendidikan dan Pembelajaran Jurnal INFOTEL
Adi Soeprijanto
Department Of Chemical Engineering, Institut Teknologi Sepuluh Nopember
Religion Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Other

Published : 100 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 100 Documents
Search

 5   6   7   8   9 
Bioethanol Production Using Green Algae (Chaetomorpha) As Renewable Energy Soeprijanto Soeprijanto; Fajar Arif Widodo; Istiqfarin Istiqfarin; Nabila Fara Anindya; Putri Selly Mudyawati
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2020: PROSIDING SNTKK 2020
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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

Abstract

Biologically, green algae (Chaetomorpha) are a group of chlorophyll plants consisting of one or many cells and in the form of a colony. The main organic materials contain in algae for example polysaccharides, vitamins, and minerals. So far the use of algae as an industrial raw material is still relatively small. Though the chemical components containing in algae are very useful for raw materials for bioenergy. The green algae have a potential as raw material in bioethanol (C2H5OH) production as one of the alternatives and renewable energy. The purpose of these experiments was to determine the effect of a variety of concentrations of green algae on reducing sugar and bioethanol production through liquefaction, saccharification, and fermentation. Green algae flour was obtained by drying in an oven at 60°C for 24 h, then was ground. The reducing sugar was obtained by two steps, i.e., liquefaction and saccharification. In liquefaction, the algae flour was put in an Erlenmeyer 2000 ml and added by 40 mg/l CaCl2, α-amylase, and water until the slurry volume was achieved 2000 ml, then heated at 90°C-100°C for 2 h. The next step was for saccharification, in this step HCl was added in the solution to achieve a pH of 4, and glucoamylase was added, then was heated at 60°C for 4 h. The final stage was fermentation, this solution was then added with urea, NPK, and yeast, then incubated for 72 h. After fermentation, the liquid was distilled to obtain bioethanol. The results showed that the addition of enzymes with a concentration of 2% yielded reducing sugar of 64.62, 34.38, 8.46, and 1.14 g/l, with green algal concentrations of 10, 30, and 40% (w/v), respectively. The bioethanol obtained was 0, 0.81, 2.92, and 5.29%, with reducing sugar of 64.62, 34.38, 8.46, and 1.14 g/l for 0, 24, 48, and 72 h, respectively. However, the addition of enzymes with a concentration of 5% produced reducing sugar of 122.22, 55.32, 10.23, and 1.3 g/l, respectively. The bioethanol obtained was 0, 0.92, 3.71, and 8.16% for 0, 24, 48, and 72 h, respectively.  It concluded that the maximum bioethanol obtained was 8.16 % at algae concentration of 40% (w/v) for 72 h of fermentation.
PERENCANAAN PENERAPAN CONSTRUCTED WETLAND UNTUK PENGOLAHAN EFLUEN TANGKI SEPTIK Soeprijanto Soeprijanto
Purifikasi Vol 9 No 1 (2008): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Environmental and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25983806.v9.i1.141

Abstract

Wetlands are natural wet ecosystems with diverse and complex roles in nature and fundamentally wetlands are at least intermittently flooded with water depths that support the growth of emergent vegetation such as cattail, reeds, sedges, bulrushes, rushes, and grasess. The vegetation provides surfaces for the attachment of microbial films, aids on filtration and adsorption of wastewater constituents, transfer oxygen into the water column, and controls the growths of algae by restricting the penetration of sunlight. The extensive root systems serve as large surface areas for the development of microorganisms and enabling filtration as well as adsorption of sediment. Design of the system consisted of two wetland cells in series, namely the subsurface flow (SSF) and the free water surface (FWS) cells. The SSF had an effluent rate of 8 m3/day, surface area of 35,68 m2, bed width of 3,6 m, length of 10 m, depth of 0,6 m, cross sectional area of 2,16 m2, organic loading rate (OLR) of 179,37 kg BOD/ha-day, HLR of 0,2242 m3/m2-day, and residence time of 1 day. The FWS had a surface area of 19,71 m2, bed width of 2,5 m, length of 8 m, depth of 0,3 m, cross sectional area of 0,75 m2, OLR of 83,21 kg BOD/ha-day, HLR of 0,4059 m3/m2-day, and residence time of 1 day.
BIOKONVERSI SELULOSA DARI LIMBAH TONGKOL JAGUNG MENJADI GLUKOSA MENGGUNAKAN JAMUR ASPERGILLUS NIGER Soeprijanto Soeprijanto
Purifikasi Vol 9 No 2 (2008): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Environmental and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25983806.v9.i2.146

Abstract

The purpose of this experiment was to obtain glucose from corn-cob through enzymatic hydrolysis using cellulase from Aspergillus niger, and to study the effects of enzyme dose and particle size on the hydrolysis processes. The experiment was started with enzyme preparation from A. niger and cellulase examination. The experiment was then continued with corn-cob composition analysis. Hydrolysis with acid was conducted by immersing the corn-cob in FeTNa solutions. Cellulose hydrolyses using enzyme from A. niger at various particle sizes and enzyme doses were performed and compared. The best activities of cellulase was observed at a concentration 2.257 IU/mL with incubation time of 4 days. Conversion of cellulose to glucose was best (51.01%) at corn-cob particle size of 100 mesh and enzyme volume of 50 mL.
PERURAIAN LIMBAH MAKANAN MENGGUNAKAN BIOREAKTOR AEROBIK DALAM FASA SUSPENSI Soeprijanto Soeprijanto
Purifikasi Vol 10 No 1 (2009): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Environmental and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25983806.v10.i1.157

Abstract

The purpose of this study was to degrade food wastes to simple compounds. The experiments were conducted using a slurry aerobic bioreactor with a working volume of 25 L. The bioreactor was aerated with an air flow rate of 12 L/min and an organic loading rate of 2 g/L.day. Parameters determined during operations were total solids, COD, dissolved oxygen, pH, total nitrogen and total phosphorous. The results showed that during operation time of 90 days, the oxygen requirement for degradation of food waste was 0.35 g O2/g dry weight. The degradation of solid waste was 79.60% and the removal efficiency of total COD was 79.40%. Dissolution and mineralization of food wastes achieved maximum nitrogen concentration of 123.3 mg NH4-N/L and that of phosphorus of 32.2 mg PO4-P/L. It concluded that the aerobic bioreactor could decompose fresh food wastes during a time period of 90 days without intermittent removal of suspended solids in the system.
KINETIKA BIOSORPSI Cr(VI) DALAM LARUTAN MENGGUNAKAN BIOMASSA Phanerochaete chrysosporium Soeprijanto Soeprijanto
Purifikasi Vol 10 No 2 (2009): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Environmental and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25983806.v10.i2.170

Abstract

The aims of this research were to study the ability of Phanerochaete chrysosporium biomass to adsorb metal ion of Cr(VI), to obtain equilibrium data concentrations and biosorption kinetics. P. chrysosporium was incubated in a sterilized liquid media of peptone 12.5 g/L and 50 g/L glucose at 35oC for 6 days. The obtained biomass culture was treated with NaOH 0.5 N, and then boiled for 15 minutes. A variety of biomass concentrations were mixed with 200 mg Cr(VI)/L in erlenmeyer flasks and vibrated by a shaker at 300 rpm during 0-200 minutes. Cr(VI) concentrations were measured using a spectrophotometer at 540 nm. The results showed that the maximum capacity of biosorption was approximately 5.13 mg/g. Estimation of biokinetic parameter, k1 was 0.015 minute-1 with a correlation coefficient of 0.91. It was concluded that the amount of P. chrysosporium biomass affected the equilibrium concentrations of Cr(VI) ions. The biosorption kinetics of Cr(VI) ion followed the equation of first order reaction.
PENGOLAHAN VINASSE DARI AIR LIMBAH INDUSTRI ALKOHOL MENJADI BIOGAS MENGGUNAKAN BIOREAKTOR UASB Soeprijanto Soeprijanto
Purifikasi Vol 11 No 1 (2010): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Environmental and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25983806.v11.i1.180

Abstract

Distillery wastewater from ethanol fermentation has a high content of organic materials. Therefore, it can be used as raw materials for biogas production. The purpose of the experiment was to study the performance of Upflow Anaerobic Sludge Blanket (UASB) bioreactor to convert vinasse wastewater to biogas and other simple materials. A bioreactor was inoculated with 4 L sludge from a full-scale UASB bioreactor. The bioreactor was operated at a volume of 9 L. Vinasse was fed to the bottom of the bioreactor with a flow rate of 0.4 L/h using dosing pump. A variety of organic loading rates (OLR) applied were 5.49, 10.99, and 16.49 kg/m3.day respectively; and hydraulic retention time (HRT) of approximately 22 h. The results showed that the maximum COD removal was 61.59% and the maximum biogas volume was 4.59 L/day (3.28 L CH4/day) with OLR of 10.99 kg/m3.day. With OLR value of 5.49 kg/m3.day, a maximum CH4 content of 74.86%, CH4 yield of 0.11 m3 CH4/kg COD consumed, and a heating value of CH4 of 11,875 kcal/kg were achieved.
Ferroresonance Signal Analysis with Wavelet Transform on 500 kV Transmission Lines Capacitive Voltage Transformers I Gusti Ngurah Satriyadi Hernanda; I Made Yulistya Negara; Adi Soeprijanto; Dimas Anton Asfani; Mochammad Wahyudi; Surya Dwi Kisdarmawan; Daniar Fahmi
JAREE (Journal on Advanced Research in Electrical Engineering) Vol 1, No 1 (2017): April
Publisher : Department of Electrical Engineering ITS and FORTEI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25796216.v1.i1.8

Abstract

This paper deals with ferroresonance detection on an transmission line utilizing wavelet transform. The ferroresonance involving linear capacitor and non-linear inductor was triggered by the disturbances of power system, such as lightning strike, switching operation and ground fault. The primary voltage of capacitive voltage divider (CVT) was observed as response of the triggered ferroresonance. The voltage signal was processed using wavelet daubechies (db5) until 9 levels. The cyclic cumulative energy for each condition was then calculated and compared. The result shows that the cyclic cumulative energy ratio and duration of period of cumulative energy deviation can be used as ferroresonance detection parameters.Keywords: ferroresonance; capacitive voltage divider, wavelet transform
Synergistic Effect of Two Type Cellulase Immobilized on Chitosan Microparticle as Biocatalyst for Coconut Husk Hydrolysis Afan Hamzah; Lidya Lorenta Sitompul; Irma Nurhanifah Fenda Putri; Soeprijanto Soeprijanto; Arief Widjaja
Indonesian Journal of Chemistry Vol 19, No 2 (2019)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (480.253 KB) | DOI: 10.22146/ijc.39714

Abstract

The effectivity of employing two types of cellulases from Aspergillus niger and Trichoderma resei covalently immobilized on chitosan microparticle was investigated. Reducing sugar from CMC yielded by immobilized cellulase from T. resei alone and A. niger alone was 0.316 g/L and 0.244 g/L, respectively. Simultaneous use of both cellulases shows a significant increase of reducing sugar produced to 1.020 g/L. The effective combination of this two types of cellulases also occurred when coconut husk was used as substrate. A very high enzyme coupling of 92.06% compared to free enzyme was obtained in the immobilization. Addition of GDA not only increased enzyme coupling to 100% but also improved sugar produced. Immobilized cellulase was successfully maintained its activity until 5 cycles
Influence of Oxygenation on Granulation in Anaerobic Wastewater Treatment Soeprijanto Soeprijanto; K. Brighton
ASEAN Journal of Chemical Engineering Vol 9, No 1 (2009)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1484.279 KB) | DOI: 10.22146/ajche.50109

Abstract

The emphasis of this study was to put on the ability of bacteria to form granules in anaerobic wastewater treatment. This direction was taken mostly because the success of wastewater treatment in such systems as Upflow Anaerobic Sludge Blanket (UASB) depends on how long the biomass is retained, and this is a function of adhesion of bacteria to reach other to form well-settling granular sludge. The granular sludge will remain in the reactor and will be exposed to the continuous supply of nutrients (wastewater) which is injected into it. The wastewater used in this study was synthetic. It consisted of molasses dissolved in water (100%), and a mixture of molasses and peptone dissolved in water (20 % and 80 %, respectively). Several factors or parameters influence bacteria to form good granules and improve the performance of the digesters. The effects of oxygen on the anaerobes, and the extent to which it acts as an inhibitor or toxic was studied. This was found to be both advantageous and disadvantageous.
Stability and reliability of low voltage hybrid AC-DC microgrids power flow model in islanding operation hasti afianti; Ontoseno Penangsang; Adi Soeprijanto
Indonesian Journal of Electrical Engineering and Computer Science Vol 19, No 1: July 2020
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v19.i1.pp32-41

Abstract

The problem of decreasing and increasing power flow in hybrid AC-DC microgrids in island operations is the concern of this research. This condition arises if one sub-microgrid cannot supply load power requirements, either due to a decrease in power at the source or an increase in load on the sub-microgrid network. As a result, in this research used the bidirectional converter as an interlinking converter, the converter can change the power flow from the ac sub microgrid to the dc sub microgrid and vice versa. With this bidirectional converter, load power requirements can be met even though there is a power change in one of the sub microgrid. The simulation in this research support by Simulink/Matlab software. The model is built in a low voltage system, and the power flow analysis is in steady-state condition with two different cases. The simulation results show the stability and reliability of the power flow in both sub microgrid with stable frequency and voltage when power and load change occur.
Co-Authors Achmad Arifin Achmad Dwitama Karisma Achmad Elsony Achmad Ferdiansyah Adani, Muhammad Afaf Adelhard Beni Reihara Ady Prima A Adyatmoko Wirananto Afan Hamzah, Afan Agung Subyakto Agus Kiswantono Agus Surono Agustiani, Elly Aip Badrujaman Aisha, Nurul Ali Altway Alif Adi Kaisar Alif Adi Kaisar Alifia, Luluk Altway, Saidah Amirullah Amirullah Amirullah Amirullah Anara, Siti Alicia Andhika, Adi Andita Noor Shafira Anfi Reynikha Fatullah Anfi Reynikha Fatullah Aparamarta, Hakun Wirawasista Ardyono Priyadi Arief Abdurrakhman, Arief Ariefin, Dayu Adestamy Arif Wahjudi Arifin, Achmad Arino Anzip Aryani, Ni Ketut Asrori, Mohamad Fakhri Awaluddin Tjalla Azis, Ahmad Rifky Baiq Firyal Salsabilla Safitri Bima Mustaqim Budi Setiawan Budi Setiawan Budiman, Fajar Christina Tio Trisnasari Citra Rahmadhani Danawati Hari Danawati Hari Prajitno Danawati Hari Prajitno Daniar Fahmi, Daniar Daryanto Daryanto Dheny Ashari Hasan Dimas Anton Asfani Dimas Fajar U.P. Dimas Fajar Uman Putra Dinal Izzati Dinny Harnani Dinny Harnani Dwiana Hendrawati Dyah Firdha Amalia Dyah Firdha Amalia Eko Sulistyowati Ema Umilia Enny Zulaika Ervina Rosanita Rohmah Fajar Arif Widodo Fajar Budiman, Fajar Fauzan Nusyura Fauziah Fauziah Findi Kusuma Wardani Firdaus Firdaus Firdaus, Aji Akbar Fredy Kurniawan Gilang Hari Pratomo Giorgio Rendra Gumelar Gunadin, Indar Chaerah Gurning, Raja Oloan Saut Habibur Rohman Hanny F. Sangian Harits Eka Febrianto Harus Laksana Guntur hasti afianti Herlambang Setiadi Herlambang Setiadi Hermagasantos Zein Hermawan, Yoseph Meidyanto Hertiari Idajati, Hertiari Husna, Aghnina Camilla I Gusti Ngurah Satriyadi Hernanda I Made Ginarsa I Made Yulistya Negara I.D.A.A Warmadewanthi Ignatius Riyadi Mardiyanto Ignatius Riyadi Mardiyanto Imam Abadi Imam Wahyudi Farid Inayah Wulandari Irene Fransisca T Irma Nurhanifah Fenda Putri Ismit Mado Istiqfarin Istiqfarin Iwan Vanany Jangkung Raharjo Januar Adi Perdana Jatayu, Anoraga Johari Johari Juzma Ilmahur Mawaddah K. Brighton Karar Mahmoud Karenina Anisya Pratiwi Karenina Anisya Pratiwi Kemas Robby Firmansyah Kharisma Bani Adam Kusuma, Hendra Siswanto Laila Nur Rahmah Lailatul Qomariyah, Lailatul Lidya Lorenta Sitompul Lilik Fatmawati, Lilik Lily Pudjiastuti, Lily M Yosi Kurniawan M. Ibrahim AH Maharani, Salma Mahendra Wardhana, Mahendra Mahmoud, Karar Maickel Tuegeh Masaji, Marga Mat Syai’in Mauridhi H Purnomo Mauridhi Hery P Mauridhi Hery Purnomo Metika Mega Agata Mikhael Vidi Santoso Moch Revandra Moch. Khoirul Anwar Mochamad Ashari Mochamad Luthfiyansah Mochammad Wahyudi Mochammad Zayyan Difa Fadhillah Mochammad Zayyan Difa Fadhillah Mohamad Dwi Alfaridzi Mohammad Arie Reza Mohammad Herli Muchammad nurif, Muchammad Muhamad Haddin Muhammad Abdillah Muhammad Abdillah Muhammad Abdillah Muhammad Irwan Budianto Muhammad Nurul Hakim Muksin Muksin Mulyadi, Yeyes Muthmainnah, Melania Suweni Muntini Nabila Fara Anindya Nabila Fara Anindya Nanda Dicky Wijayanto Ni Ketut Aryani Ni Ketut Aryani Niniek Fajar Puspita, Niniek Fajar Nurlaili Humaidah Nurlaili Humaidah, Nurlaili Nursalim Nursalim Nurul Maziyah Ocy, Dwi Rismi Ontoseno Penangsang Prima Dana Wisesa Adiwarna Prohantoro, Rudy Pujiantara, Margo Purwoharjono Purwoharjono Purwoharjono Purwoharjono Putra, Dimas Fajar Uman Putri Selly Mudyawati Putri Selly Mudyawati Rachmad Setiawan Rachmaniah, Orchidea Rahman, Nisrina Amatur Rahmawati, Deti Rakhmat Asrie Wibowo N Reihara, Adelhard Beni Rexy Widya Tauchid Rezi Delfianti Rian Pratama Risniyani, Andi Evi Risqy Rohmawati Riyadi Riyadi Riyan Arthur Rizka Winda Novialifiah Rizky Pratama Putra Rizkylillah, Muhammad Sadam Robby, Barikly Rony Seto Wibowo Rony Seto Wibowo Sashi Agustina Sashi Agustina Sayyida Sayyida Selvi Marcellia Septian Dyah Faristi Septiana, Devika Nurlaela Setiawan, Rachmad Seto Dyana Sugeng Sheptian, Riky Sholichah, Wildatus Siti Wulandari Sjamsul Anam Sjarief Widjaja Soebagio Soebagio Subyakto, Agung Sugiyanta, Lipur Suhartono Suhartono Suprapto Suprapto Suprapto Surya Dwi Kisdarmawan Suwito Suwito Suwito Suyanto, Suyanto Tri Widjaja Triastuti, Warlinda Eka Umar Umar Vicky Aditia Tristanto Wirawan Wirawan Wulan Maghfiro Zuchrillah, Daril Ridho Zuchrillah, Daril Ridho