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All Journal GEMA TEKNOLOGI JURNAL SAINS PERTANIAN EQUATOR Jurnal Neutrino : jurnal fisika dan aplikasinya Eksergi: Chemical Engineering Journal Prosiding Semnastek Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat Jurnal Ampere IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Jurnal Distilasi Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Jurnal Inovator ADLIYA: Jurnal Hukum dan Kemanusiaan Jurasik (Jurnal Riset Sistem Informasi dan Teknik Informatika) INTERNATIONAL JOURNAL OF SOCIAL, POLICY AND LAW (IJOSPL) ARRUS Journal of Engineering and Technology Management Science Research Journal Integrasi : Jurnal Ilmiah Teknik Industri
Eko Ariyanto
Universitas Muhammadiyah Palembang
Religion Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences

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STUDI KASUS KEHILANGAN KVARH PELANGGAN TARIF I-2 DENGAN DAYA 16.500 VA DAN 17.600 VA DI PT PLN (PERSERO) AREA SEMARANG Kartikaningtyas, Arni; Ariyanto, Eko
Gema Teknologi Vol 18, No 2 (2015): October 2014 - April 2015
Publisher : Vocational School Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (526.666 KB) | DOI: 10.14710/gt.v18i2.8979

Abstract

Arni Kartikaningtyas, Eko Ariyanto, in this paper explain that In electric power transmission and distribution, volt-ampere reactive (var) is the unit used to measure reactive power into AC electric power system. Reactive power in AC circuits when current and voltage are not in phase. Is a true symbol and Var, var, or VAR, but all three terms are widely used. Var terms proposed by Romanian Constantin Budeanu electrical engineer and was introduced in 1930 by the IEC in Stockholm, which has been adopted as a unit for reactive power. Var can be regarded as both the imaginary part of the apparent power, or the power flowing to the load reactive, where voltages and currents specified in volts and amperes. Two definitions are equivalent. Reactive power into the power unit kVArh is used by passive components beyond resistor which is a power loss or power that is not desirable. This power to a minimum to avoid, or at least minimized, although it will not disappear altogether, by minimizing the power factor. Industrial customers are groups of customers with the use of induction machines used for the induction process that requires a great power to drive the motor and pull out the reactive power usage needs to be taken into account. Customers I 2 is the class of tariffs for industrial purposes being at low voltage with power above 14 kVA to 200 kVA. Keywords: VAR, customer Industry.
Pengaruh Pupuk Kotoran Ayam Pada Berbagai Jarak Tanam Terhadap Terhadap Pertumbuhan dan Hasil Ubi Jalar Ungu Di Tanah Gambut ARIYANTO, EKO; ZULFITA, DWI; SURACHMAN, SURACHMAN
Jurnal Sains Mahasiswa Pertanian Vol 7, No 3 (2018): AGUSTUS 2018
Publisher : Jurnal Sains Mahasiswa Pertanian

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Abstract

ABSTRAKPenelitian ini bertujuan untuk menemukan berapa jarak tanam dan dosis pupuk kotoran ayam terbaik pada ubi jalar ungu di tanah gambut, serta untuk mengetahui apakah terjadi interaksi antara jarak tanam dan dosis pupuk kotoran ayam pada ubi jalar  di tanah gambut. Penelitian ini menggunakan Rancangan Petak Terbagi (Split PlotDesign) pola faktorial dengan dua faktor perlakuan terdiri dari jarak tanam (J) sebagai petak utama (mainplot) dan pupuk kotoran ayam (P) sebagai anak petak (subplot). Adapun jarak tanam terdiri dari tiga taraf, yaitu : j1 = (70 cm x 20 cm) j2 = (70 cm x 25 cm) j3 = (70 cm x 30 cm)dan pupuk kotoran ayam terdiri dari tiga taraf, yaitu : p1 = (10 ton/ha) p2 = (15 ton/ha ) p3 = (30 ton/ha). Masing-masingperlakuan diulang sebanyak 3 kali.Variabel yang diamati pada penelitian ini adalah, panjang batang utama (cm), klorofil daun (spad unit), Berat kering tanaman (g), Jumlah umbi Per Tanaman, Berat umbi segar Per Tanaman, Berat umbi segar Per petak. Berdasarkan hasil penelitian ini tidak ditemukan perlakuan berbagai jarak tanam dan dosis pupuk kotoran ayam yang terbaik untuk pertumbuhan dan hasil tanaman ubi jalar ungu di tanah gambut serta tidak terjadi interaksi antara jarak tanam dan pupuk kotoran ayam terhadap pertumbuhan dan hasil ubi jalar ungu di tanah gambut. Kata kunci:JarakTanam,UbiJalarUngu, KotoranAyam, Tanah Gambut 
PENGARUH JUMLAH KOTORAN SAPI DAN SAMPAH ORGANIK TERHADAP PEMBIAKAN EM4 PADA PROSES ANAEROB Ariyanto, Eko; Kalsum, Ummi; Ruliansyah, M. Wahyu
Jurnal Distilasi Vol 6, No 1 (2021): Jurnal Distilasi
Publisher : Universitas Muhammadiyah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/jd.v6i1.3375

Abstract

Indonesia merupakan salah satu negara yang jumlah penduduknya mencapai 238.518.000 jiwa pada tahun 2015, data ini diambil setiap 5 tahun sekali. Hal tersebut menyebabkan lonjakan penggunaan bahan makanan tepatnya di kota palembang seperti sayur mayur dan sebagainya yang banyak dikonsumsi masyarakat yang semuanya akan menghasilkan sampah, pada tahun 2020 sampah di kota palembang adalah 1.400 ton / per tahun. hari. Dikhawatirkan akan menimbulkan masalah bagi masyarakat yang tentunya berdampak pada kesehatan. Sampah yang tidak dibuang dengan baik dapat menimbulkan penyakit seperti diare, disentri, kudis, jamur dan lain-lain. Seperti kita ketahui, rata-rata petani di Indonesia menggunakan pupuk anorganik yang dapat merusak unsur tanah dan senyawa lainnya. Melihat dari kondisi tersebut, kami memiliki solusi dengan mengolah sampah organik menjadi Struvite (pupuk organik) dengan menggunakan metode Anaerobik. Sampah organik merupakan sampah yang mengalami pelapukan dan mudah terurai yang biasa disebut dengan kompos. Kompos berasal dari limbah daun dan sayur yang dijual di pasaran. Berbagai macam teknologi dan metode telah digunakan untuk mengurangi pencemaran yang disebabkan oleh limbah, antara lain dengan menggunakan proses mebran dan penyerapan. Namun, karena biaya peralatan yang digunakan, itu banyak uang dan sedikit mahal. Metode ini terbagi menjadi dua yaitu metode anaerobik dan metode aerobik. Pengolahan limbah yang prosesnya tidak memerlukan adanya oksigen sebagai syarat kelangsungan hidup bakteri sehingga bakteri tersebut disebut bakteri anaerob. Proses pembuatan pupuk struvite dapat dilakukan dengan dua cara yaitu proses aerobik dan proses anaerobik. Proses aerobik merupakan proses yang membutuhkan oksigen agar fermentasi dapat terjadi, sedangkan anaerob adalah proses yang tidak membutuhkan oksigen sehingga bakteri akan disebut sebagai bakteri anaerob.
Techno-Economic Study of Substation Electric Power in Indonesia: A Mini-Review Al Hakim, Rosyid Ridlo; Ariyanto, Eko; Arief, Yanuar Zulardiansyah
ARRUS Journal of Engineering and Technology Vol. 1 No. 1 (2021)
Publisher : Lembaga Penelitian dan Pengembangan Teknologi dan Rekayasa, Yayasan Ahmar Cendekia Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35877/jetech540

Abstract

Energy is something that people need every day. One of the energies that are glorified to meet people's energy needs is electrical energy. The need for electrical energy in Indonesia continues to increase in line with economic growth and the increasing population. One of the components of electric power that is useful for delivering electric current to transmission networks is a substation. With the feasibility of techno-economic, it is possible to know the feasibility of the quality of an electric power system based on financial analysis. This paper provides a mini-review of the techno-economy of substation electricity and its maintenance in several regions in Indonesia today. The research stages consist of literature study, identification of article titles, article abstract screening, complete article selection, and mini-review reviews. Several studies are still not widely applied to the calculation of the cost of energy consumption to customers. In addition, the basic cost of providing electricity, the profit from electricity sales, and the payback period method need to be improved in research related to the techno-economic analysis of electrical energy. It is important to do this to determine the potential feasibility and the estimated advantages and disadvantages of an electric power system.
Efisiensi Thermal Alat Economizer pada Pre-Treatment Section dalam Pengolahan Crude Palm Oil (CPO) Ariyanto, Eko; Alqorni, Muhammad Faris; Mardwita, Mardwita
Eksergi Vol 21, No 1 (2024)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v21i1.9974

Abstract

Dalam industri pengolahan CPO, efisiensi energi pada alat economizer menjadi faktor penting dalam meningkatkan efektivitas produksi. Penelitian ini bertujuan untuk mengevaluasi kinerja alat economizer dalam mentransfer energi panas pada aliran fluida Crude Palm Oil (CPO) dan Refined Bleached and Deodorized Palm Oil (RBDPO). Metode penelitian yang dilakukan adalah pengamatan langsung dengan pengukuran suhu dan aliran fluida, dari data tersebut dihitung heat loss dan evaluasi efisiensi termal pada PT XYZ. Hasil penelitian menunjukkan terjadi fluktuasi temperatur pada aliran masuk dan keluar CPO dan RBDPO. Fluktuasi ini dipengaruhi oleh perubahan variabel aliran fluida yang masuk. Aliran massa RBDPO mengalami peningkatan dari 33.659,98 kg/jam menjadi 36.720 kg/jam, sementara aliran CPO tertinggi pada 37.280 kg/jam. Efisiensi termal alat economizer HE-T521A dengan nilai rata-rata sebesar 89,45%. Efisiensi termal tertinggi dicapai pada tanggal 22 Februari 2023, yaitu mencapai 91,09%, sedangkan nilai terendah terjadi pada tanggal 24 Februari 2023, sebesar 88,58%. Meskipun efisiensi termal masih di bawah target desain 94%, alat ini tetap memberikan efisiensi termal yang relatif baik. Hasil penelitian ini dapat digunakan sebagai dasar untuk perbaikan dan pemantauan lebih lanjut guna meningkatkan efisiensi termal alat sesuai dengan desain yang diharapkan.
Simulation Study of Propylene Glycol Formation from Propylene Oxide and Water: Effect of Reactor Type, Reactant Ratio, Temperature, and Reactor Configuration Ariyanto, Eko; Yusmartini, Eka Sri; Robiah, Robiah; Ardianto, Feby
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 9, No 1 (2024): February 2024
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v9.i1.26

Abstract

This study investigates the influence of reactor type, reactor configuration, reactor temperature, and reactant ratio on the formation of propylene glycol from propylene oxide and water using HYSYS simulation software. The examined reactor types include Continuous Stirred Tank Reactors (CSTR) and Plug Flow Reactors (PFR). The impact of reactant ratio is explored by varying the mole ratio of propylene oxide to water. The effect of temperature is studied by altering the reaction temperature from 24 to 40 °C. HYSYS simulation results reveal that PFR yields the highest conversion compared to CSTR. Furthermore, consecutive CSTR configuration produces higher conversion than parallel CSTR configuration. Additionally, an increase in reaction temperature from 24 to 40 °C enhances the conversion of propylene oxide to propylene glycol. The reactant ratio 1:1 (propylene oxide to water) yields the highest conversion compared to other reactant ratios. The implications of these findings are to provide insights into more efficient and economical propylene glycol processes. The study suggests that PFR configuration, consecutive CSTR configuration, elevated reactor temperatures, and optimal reactant ratios can significantly improve the efficiency of propylene glycol formation.Keywords: Propylene Glycol, CSTR, PFR, Conversion, HYSYS Simulation
Proses Pembentukan Struvite Kristal Menggunakan Sampah Organik Melalui Proses Anaerobik Ariyanto, Eko; Septiaranisi, Eci Dwi; Martini, Sri; Yusmartini, Eka Sri
Prosiding Semnastek PROSIDING SEMNASTEK 2024
Publisher : Universitas Muhammadiyah Jakarta

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Abstract

Penelitian ini bertujuan untuk mengevaluasi pengaruh penambahan Effective Microorganisms-4 (EM-4) pada proses anaerobik limbah organik terhadap peningkatan konsentrasi ammonium (NH4) serta mengevaluasi penambahan ion Magnesium (Mg) dan Pospat (PO4) terhadap penurunan konsentrasi ion NH4 dalam proses pembentukan struvite. Meskipun telah ada penelitian sebelumnya mengenai pengaruh penambahan ion Mg dan PO4 dalam pembentukan struvite, namun penelitian yang secara khusus memperhatikan pengaruh penambahan EM-4 masih terbatas. Penelitian ini menggunakan limbah organik, kotoran sapi, dan EM-4 dalam proses anaerobik untuk menghasilkan peningkatan konsentrasi NH4, yang kemudian digunakan untuk pembentukan struvite dengan penambahan ion Mg dan PO4, serta dianalisis menggunakan SEM dan EDX. Hasil penelitian menunjukkan bahwa penambahan EM-4 sebesar 60 ml dalam proses anaerobik limbah organik menghasilkan peningkatan konsentrasi NH4 yang signifikan dari 97 mg/L hingga 350 mg/L. Pada Proses pembentukan struvite kristal menunjukkan bahwa penambahan ion Mg dan ion PO4 memiliki efek yang signifikan dalam penurunan konsentrasi NH4 hingga mencapai 53,6 mg/L dan meningkatkan kemurnian struvite yang dihasilkan yaitu 65%. Analisis Scanning Electron Microscope (SEM) dan Energy Dispersive X-Ray Analysis EDX memberikan gambaran tentang hasil pembentukan struvite dan keberadaan pengotor dalam struvite. Penelitian ini memberikan kontribusi dalam pemahaman tentang pengaruh penambahan EM-4, ion Mg, dan ion PO4 dalam pembentukan struvite melalui proses anaerobik limbah organik, serta menekankan pentingnya penelitian lebih lanjut untuk pemahaman yang lebih baik dalam pengolahan limbah organik secara efektif dan berkelanjutan.Kata kunci: Anaerobik, limbah organik, Effective Microorganisms-4 (EM4), struvite
Analysis Corrosion Rate Carbon Steel by Mg Anode and Na2Cr2O7 in Musi River Water Media Komaini, M Ali; Ariyanto, Eko; Sri Yusmartini, Eka; Oktaviansyah, Ikbal
Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Vol. 21 No. 2 (2024): Sainmatika : Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/sainmatika.v21i2.16731

Abstract

This study aims to analyze and optimize the effect of Mg anode and sodium dichromate sacrificial protection on the corrosion rate of carbon steel in Musi River water media. The research involved carbon steel pipes (½ inch, 1 cm length) with an ID of 18.20 mm and OD of 18.80 mm. Four variables were tested: A (no corrosion prevention), B (Na2Cr2O7), C (Mg anode), and D (Na2Cr2O7 with Mg anode), each immersed in 150 ml of Musi River water for periods of 20, 30, 40, 50, and 60 days. Results showed the highest pH drop in variation A, where the initial pH of 6.87 decreased to 4.13 after 60 days. Variation A also showed the greatest increase in Fe concentration, rising from 1.47 mg/L to 4.89 mg/L, and turbidity from 80.8 NTU to 88.3 NTU after 60 days. Corrosion rate analysis indicated that carbon steel without corrosion prevention had the highest corrosion rate, reaching 0.0000025746 mpy after 60 days. In comparison, carbon steel with Na2Cr2O7 and Mg anode protection exhibited significantly lower corrosion rates. These findings highlight carbon steel pipes without corrosion protection experience higher degradation in Musi River water, while sodium dichromate and Mg anode treatments effectively reduce corrosion.
Pemodelan Efisiensi Energi Panel Surya Berdasarkan Variasi Suhu Dengan Algoritma Random Forest ardianto, Feby; Apriani, Yosi; Muhammad Alvin Pratama; Ariyanto, Eko
Jurnal Ampere Vol. 9 No. 2 (2024): JURNAL AMPERE
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/ampere.v9i2.16836

Abstract

When temperature increases, energy efficiency tends to decrease. This is because the materials in solar panels, especially photovoltaic cells, have characteristics that make them less efficient at converting solar energy into electrical energy when temperatures rise. By using the random forest research method and Rstudio software to help analyze it can be concluded that the temperature variation that has the most influence on power efficiency is light intensity with a contribution of 19%, then air temperature with 18%, humidity with 17.5%, wind speed with 14%. 5% and finally panel temperature with a contribution of 13%. This contribution is the contribution to the power produced by the effect of temperature on the power produced. at 10.13 the highest power was obtained, where the power produced was 164.48 Watts. With a light intensity of 431.44 cd (candela), air temperature of 41.9°C, humidity of 49.4%, wind speed of 0.2 m/s, and panel temperature of 35 °C
Harnessing Electrochemical Processes for Enhanced Struvite Crystallization: A Comprehensive Review Ariyanto, Eko; Yusmartini, Eka Sri; Gusmiatun, Gusmiatun; Fatimah, Fatimah; Purwoko, Mitayani
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 10, No 1 (2025): February 2025
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

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Abstract

The recovery of nutrients from contaminated water and wastewater can effectively mitigate both the nutrient burden on water resources and the associated environmental issues affecting aquatic ecosystems. This approach presents a valuable solution towards achieving environmental and societal sustainability. Consequently, struvite crystallization technology has emerged as a promising method for nutrient recovery, as the resulting precipitate can be recycled as a natural fertilizer. This review aims to elucidate the characteristics of struvite and provide insight into the fundamental process of crystallization. Furthermore, it comprehensively discusses the various variables that influence struvite crystallization, with a special focus on its application in urine-contaminated water using electrochemical methods. The review also highlights the advantageous on environmental and economic aspects. In addition, the limitations of struvite crystallization technology are examined, and future research prospects are explored, particularly in the context of electrochemical techniques which offer innovative solutions for controlled nutrient extraction. Ultimately, this work serves as a foundational resource for the future utilization of struvite crystallization technology in nutrient recovery, in response to the escalating environmental challenges and depletion of natural resources.Keywords: Struvite formation, electrochemical process, magnesium anode, struvite crystallization, natural fertilizer
Co-Authors Adiyatma, Muhammad Riko Ajie Tentara, Muhammad Alfiqhyanto, Damas Alqorni, Muhammad Faris Ani Melani Apriani, Yosi Ardianto, Feby Arni Kartikaningtyas, Arni Azhar, Ade Siti Sarah Budi Santosa Budi Santosa Devita Amalia, Devita Dian Kristiawan Nugroho Dwi Zulfita Edy Wahyudi Eka Ardhianto Eka Sri Yusmartini Farid Samsu Hananto fatimah Fatimah Gumelar B, Muhammad Adi Iman Setiono Juniar, Heni Kharismadewi, Dian Komaini, M Ali Krisna, Andy E Kristiyono, Budi Mardwita, Mardwita Mardwita, Mardwita Megido, Adiel Merisha Hastarina Mitayani Purwoko, Mitayani Muhammad Alvin Pratama Netty Herawati Oktaviansyah, Ikbal Pamungkas, Zaka Adi Priyo Sasmoko Ristiawan, Masde Robiah, Robiah Rosyid Ridlo Al-Hakim Ruliansyah, M. Wahyu Septiaranisi, Eci Dwi Sri Martini Sri Yusmartini, Eka Sungkowo, Aming Surachman Surachman Trikolas, Trikolas Ummi Kalsum Yanuar Zulardiansyah Arief Yuniarto Yuniarto, Yuniarto