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All Journal Elektriese: Jurnal Sains dan Teknologi Elektro Jurnal Teknik Terapan (J-TETA) International Journal of Innovation in Mechanical Engineering and Advanced Materials International Journal of Technology, Food and Agriculture
Febriani, Siti Diah Ayu
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology

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Rancang Bangun Sistem Monitoring Proses Produksi Bioetanol Berbasis ESP8266 dan ESP32 SoC: Design and Construction of a Bioethanol Production Process Monitoring System Based on ESP8266 and ESP32 SoC Afianah, Nuzula; Qanitah, Qanitah; Febriani, Siti Diah Ayu; Susmiati, Yuana
Elektriese: Jurnal Sains dan Teknologi Elektro Vol. 15 No. 02 (2025): Artikel Riset Edisi Oktober 2025
Publisher : Yayasan Cita Cendekiawan Al Khwarizmi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/elektriese.v15i02.5976

Abstract

The increasing demand for renewable energy has driven the development of bioethanol as an alternative fuel to replace or blend with fossil fuels, offering high prospects in the future. Driven by these high prospects, bioethanol production has begun to be widely carried out. However, the bioethanol production process tends to be complex, including fermentation and distillation processes that require intense and strict monitoring. Monitoring of both processes consists of essential parameters that must be considered, such as temperature, pH, and ethanol content, as time series data is taken intermittently and continuously. This monitoring or supervision determines the quality and success of the bioethanol production process from biomass materials, in this case, using fermented and distilled sugarcane juice. This study aims to design and implement a bioethanol production process monitoring system based on the ESP8266 microcontroller and ESP32 SoC. Both micro modules are implemented in a hybrid with HTTP communication for data logger output on a cloud service. This system uses a DS18B20 temperature sensor, a pH sensor, and an MQ3 ethanol gas sensor programmed using the Arduino IDE. The development method used is the waterfall method. Several stages include needs, including system design, implementation, hardware and software testing, and system maintenance. The implementation results show success and satisfactory achievements from the performance analysis of the sensors used. The system can monitor parameters with low errors, <1% at temperature, <10% at pH, and can detect alcohol content up to 96% of the bioethanol produced.
BIODIESEL PRODUCTION FROM WASTE FISH CANNING OIL USING COCOPEAT ASH CATALYST Febriani, Siti Diah Ayu; Nofitasari, Prisca Amalia; Anwar, Saiful
International Journal of Innovation in Mechanical Engineering and Advanced Materials Vol 5, No 1 (2023)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/ijimeam.v5i1.19936

Abstract

Biodiesel is an environmentally friendly alternative fuel for diesel engines. The research studies the extraction process of biodiesel from waste produced by a fish canning factory using a heterogeneous catalyst known as cocopeat ash. The experiment was designed utilizing a completely randomized design with two factorial treatments and four repetitions. The primary factor under investigation was the composition of the catalyst, specifically 3%, 5%, and 7% w/v methanol. The second factor examined was the reaction time of either 60 minutes or 120 minutes. Data analysis revealed variations in density, viscosity, acid number, and Free Fatty Acids (FFA) in fish oil before and after refinement. The treatment that yielded the highest results was A3B2, featuring a catalyst composition of 7% and a reaction time duration of two hours, which achieved an impressive biodiesel yield of 81%. Moreover, several parameters tested for compliance with SNI-04-7182-2015 standards showed positive outcomes. These parameters include a density value measuring 876.3 kg/m³, the flash point around 160°C, iodine number reaching 16.36 g/100g, and heating value 47.47 MJ/Kg.
Analisis Efisiensi Kompor Biomassa UB 03-01 Dengan Bahan Bakar Serbuk Kayu Jati dan Sengon Febriani, Siti Diah Ayu
Jurnal Teknik Terapan Vol. 2 No. 1 (2023): April
Publisher : P3M Politeknik Negeri Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25047/jteta.v2i1.17

Abstract

Kompor biomassa UB adalah kompor berbahan bakar biomassa padat seperti potongan ranting dan kayu bekas. Pada kompor biomassa UB tidak perlu mengubah biomassa menjadi arang. Penelitian ini bertujuan untuk menganalisis salah satunya untuk mengetahui nilai FCR (Fuel Comsumtion Rate), Pout (Daya Bersih), Pin (Daya Pembakaran), Ploss (Daya Hilang) dan Efisiensi kompor biomassa UB 03-01 dengan menggukan bahan bakar serbuk kayu jati dan sengon. Penggunaan kayu jati akan dicampur dengan kayu sengon guna meningkatankualitas dari pembakaran yang dilakukan sehingga nyala api yang dihasilkan dapat stabil danbertahan cukup lama dengan menggunakan tungku biomassa UB03-01. Pengolahan data akan disajikan dalam bentuk table maupun grafik. Hasil penelitian menunjukkan bahwa nilai FCR (Fuel Consumtion Rate) terbesar 2,31 kg/jam, Pout (Daya Bersih) terbesar 0,533 kW, Pin (Daya Pembakaran) terbesar 5,31 kW, Ploss(Kehilangan Daya) terbesar 5,02 kW dan Efisiensi terbesar 66 %. Kata kunci : kayu jati, kayu sengon, kompor biomassa UB03-01
Analisis Tekno Ekonomi Pemasangan PLTS Rooftop On Grid 120 Kw (Studi Kasus PLTS di PT Santinilestari Energi Indonesia) Febriani, Siti Diah Ayu; Hidayat, Muhamad Wahyu; Rizqullah, Muhammad Jubran; Lukmanto, Yogik Indra
Jurnal Teknik Terapan Vol. 2 No. 2 (2023): Oktober
Publisher : P3M Politeknik Negeri Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25047/jteta.v2i2.31

Abstract

Pembangkit Listrik Tenaga Surya (PLTS) merupakan salah satu sistem pemanfaatan sumber energi baru terbarukan (EBT) untuk menghasilkan energi listrik. Penerapan PLTS di Indonesia terbilang cukup baik dengan dukungan rata-rata intensitas radiasi matahari sebesar 4,8 kWh/m2 per harinya. Untuk meminimalisir kerugian investasi PLTS akibat modal awal yang cukup besar, diperlukan sebuah analisis kelayakan atau yang disebut sebagai analisis tekno ekonomi. Tujuan penelitian ini adalah untuk melakukan analisis tekno ekonomi terhadap pemasangan PLTS rooftop On Grid System dengan kapasitas 120 kW di PT Santinilestari Energi Indonesia. Metode yang digunakan adalah kuantitatif prediktif dengan mengambil data perolehan energi pada tahun pertama beroperasi, yaitu sepanjang tahun 2020, untuk memprediksikan perolehan energi selama usia proyek dengan asumsi adanya degradasi kapasitas panel surya sebesar 0,5% per tahun. Parameter yang digunakan adalah Net Present Value (NPV), Internal Rate of Return (IRR), Profitability Index (PI), dan Discounted Payback Period (DPP). Suku bunga acuan menggunakan nilai suku bunga di awal berjalannya proyek, yaitu sebesar 4,75%. Berdasarkan analisis yang dilakukan, diperoleh nilai NPV sebesar Rp 457.542.400,57; nilai IRR sebesar 8,17% atau lebih besar daripada MARR; nilai PI sebesar 1,32; dan DPP tercapai pada tahun ke-17, sehingga menunjukkan investasi PLTS rooftop On Grid System 120 kW ini layak untuk dilakukan.
Kajian Tekno Ekonomi Sistem On-Grid pada Smart Greenhouse Febriani, Siti Diah Ayu; Rani, Chela Tia
Jurnal Teknik Terapan Vol. 3 No. 1 (2024): April
Publisher : P3M Politeknik Negeri Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25047/jteta.v3i1.33

Abstract

Sistem pembangkit listrik tenaga surya merupakan salah satu energi terbarukan yang potensial untuk dikembangkan di Indonesia. Indonesia mempunyai wilayah dengan potensi radiasi matahari rata-rata sebesar 4,8 kWh/m2/hari. Tujuan penerapan teknologi surya fotovoltaik (PLTS) pada Smart Greenhouse Politeknik Negeri Jember adalah mencapai penghematan listrik dan pengurangan emisi. Dalam penelitian ini dilakukan penggunaan software PVSyst untuk simulasi merancang sistem PLTS dan melakukan analisis kelayakan. Metode penelitian kuantitatif digunakan untuk menganalisis perencanaan PLTS dan aspek tekno-ekonominya. Parameter Nilai Ekonomi yang digunakan adalah Net Present Value (NPV), Payback Period (PP), Internal Rate of Return (IRR). Hasil perencanaan menunjukkan kebutuhan 42 modul surya AE Solar AE540-144MD dan 1 inverter Huawei SUN2000-20KTL-M2. Simulasi PVSyst memperkirakan produksi energi tahun pertama sebesar 38.799 kWh dengan rasio kinerja 81,8%. Analisis ekonomi menunjukkan biaya investasi awal sebesar Rp345.563.674,64 dengan proyeksi penghematan sebesar Rp1.312.620.158,33 selama 25 tahun. Analisis kelayakan investasi menghasilkan NPV sebesar Rp316.793.501,42, BCR sebesar 3,20, payback period delapan tahun dua bulan, dan IRR sebesar 12,47%. Berdasarkan hasil penelitian yang telah dilakukan, rencana PLTS Smart Greenhouse Politeknik Negeri Jember layak untuk direalisasikan.
Perancangan Desain Sistem Informasi Geografis Potensi Biogas Provinsi Lampung Menggunakan Aplikasi QGIS 3.34 Wibowo, Widiyo; Isrolana, Isrolana; Merican, Marcellino Ricky; Pakpahan, Indah Sari Pariban; Sulaiman, Zainal Muttaqien; Meisyah, Ines Amelia; Febriani, Siti Diah Ayu
Jurnal Teknik Terapan Vol. 4 No. 1 (2025): April
Publisher : P3M Politeknik Negeri Jember

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

Abstract

Lampung, a province in Indonesia with a robust agricultural and livestock sector, exhibits substantial potential for biogas production. Biogas, derived from agricultural residues and animal manure, such as cow and goat dung, presents a sustainable alternative to conventional fossil fuels. Given the escalating global energy demand and environmental concerns, this study endeavors to quantify the biogas potential in Lampung, particularly focusing on the conversion of livestock manure into energy. Employing the QGIS application, this research maps the geographical distribution of biogas potential. Findings indicate that, with optimized management practices, Lampung could produce hundreds of thousands of tons of methane annually, sufficient to partially meet the energy requirements of local households and industries. Beyond energy generation, biogas production can stimulate economic growth, enhance farmers' incomes, and mitigate greenhouse gas emissions. However, the widespread adoption of biogas technology in Lampung is contingent upon addressing several challenges, including technological limitations, public awareness, and the need for conducive policy frameworks.
Manufacturing Non Adhesive Biobriquettes With Main Ingredients From Cow Manure Waste at Dairy Cows Teaching Factory Rachmanita, Risse Entikaria; Aminullah, Muhammad; Susmiati, Yuana; Febriani, Siti Diah Ayu; Rudiyanto, Bayu
International Journal of Technology, Food and Agriculture Vol. 1 No. 1 (2024): February
Publisher : P3M Politeknik Negeri Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25047/tefa.v1i1.4511

Abstract

Biobriquettes are solid energy source that comes from biomass that is compressed under a certain pressure. The development of non-adhesive biobriquettes has not been widely carried out. Teaching factory (TEFA) Dairy Cows Politeknik Negeri Jember have 51 cows and products ± 18-20 kg/day of cow manure which have not managed optimally. On the other side of district Jember produces 1,945 tons of coconut shell waste per year which is pill up, thrown away and used as stove fiel or simply burned. This research was conducted with an experimental method using composition variations of raws material and mixed material to obtain the best mixture ratio for biobriquettes, 4KS6AR (40% : 60%), 5KS5AR (50% : 50%), 6KS4AR (60% : 40%). The raw material for cow dung is cleaned from grass fibers. The coconut shells raw material that has been dried in the sun, then pyrolyzed at a temperature of approximately 200-250ºC for 6-7 hours, then ground to size of 40, 60 and 100 mesh. From the tests that have been carried out, the most optimal value to quality standards of National Standard of Indonesia (SNI) 01-6235-2000 is with a water content of 2,382 %, calorific value of 6.650 cal/g.
Co-Authors Afianah, Nuzula Bayu Rudiyanto Hidayat, Muhamad Wahyu Isrolana, Isrolana Lukmanto, Yogik Indra Meisyah, Ines Amelia Merican, Marcellino Ricky Muhammad Aminullah, Muhammad Nofitasari, Prisca Amalia Pakpahan, Indah Sari Pariban Qanitah, Qanitah Rachmanita, Risse Entikaria Rani, Chela Tia Rizqullah, Muhammad Jubran Saiful Anwar Sulaiman, Zainal Muttaqien Wibowo, Widiyo Yuana Susmiati