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All Journal Jurnal Teknik Kimia Seminar Nasional Teknik Kimia Kejuangan Jurnal IPTEK Konversi INVOTEK: Jurnal Inovasi Vokasional dan Teknologi Journal of Research and Technology Tibuana : Journal of Applied Industrial Engineering JPP IPTEK (Jurnal Pengabdian dan Penerapan IPTEK) Prosiding Seminar Nasional Sains dan Teknologi Terapan Ensiklopedia Education Review Jurnal Teknik Kimia Indonesia Journal of Mechanical Engineering, Science, and Innovation Jurnal Teknologi Lingkungan Lahan Basah Prosiding Seminar Nasional Teknik Elektro, Sistem Informasi, dan Teknik Informatika (SNESTIK) Prosiding Seminar Nasional Teknologi Industri Berkelanjutan Jurnal Pengabdian Masyarakat dan aplikasi Teknologi International Journal of Educational Insights and Innovations (IJEDINS) International Conference on Maritime Technology and Its Application Dinamika Kerajinan dan Batik: Majalah Ilmiah
Erlinda Ningsih, Erlinda
LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)
Arts Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mathematics Mechanical Engineering Public Health Social Sciences Transportation Other

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Peningkatan Pengelolaan Bank Sampah melalui Program Pengabdian kepada Masyarakat di Bank Sampah Wilayah Simojawar Dwicahyani, Anindya Rachma; Radityaningrum, Arlini Dyah; Novianarenti, Eky; Ningsih, Erlinda
Jurnal Pengabdian Masyarakat dan aplikasi Teknologi Vol. 1, No. 1: January 2022
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.adipati.2022.v1i1.2555

Abstract

Kegiatan pengabdian kepada masyarakat ini dilaksanakan untuk meningkatkan pengelolaan Bank Sampah Simojawar, Surabaya. Bank sampah merupakan salah satu bentuk pengelolaan sampah di masyarakat di mana sampah rumah tangga dikumpulkan, dipilah, dan dijual kembali kepada pihak ketiga. Melalui bank sampah, sampah dapat dikelola menjadi suatu hal yang bernilai ekonomis. Pengelolaan bank sampah mengadopsi sistem yang ada di perbankan, namun dalam bentuk yang lebih sederhana. Nasabah bank sampah, yang merupakan warga sekitar, menyetorkan sampah yang selanjutnya dicatat sebagai saldo sesuai nilai ekonomisnya. Dalam pelaksanaannya, pengelolaan bank sampah di Simojawar masih menemui berbagai kendala. Program pengabdian ini dilaksanakan dalam rangka meningkatkan pengelolaan bank sampah melalui berbagai kegiatan yang bernilai ekonomis bagi warga. Peningkatan pengelolaan bank sampah dilakukan dengan penerapan Sistem Digital Manajemen Bank Sampah (smash.id). Selain itu, juga dilakukan berbagai pendampingan dan pelatihan produk kreatif dari sampah plastik. Hal ini bertujuan untuk meningkatkan kinerja dan kegiatan operasional bank sampah di Simojawar.
Analisa Neraca Massa Pada Alat Vertical Roller Mill W. Putrisya, Santi; D. Cahyo, Septian; Budianto, Agus; Ningsih, Erlinda
Prosiding Seminar Nasional Sains dan Teknologi Terapan 2023: Transformasi Riset, Inovasi dan Kreativitas Menuju Smart Technology dan Smart Energy
Publisher : Institut Teknologi Adhi Tama Surabaya

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Abstract

Vertical Roller Mill (VRM) merupakan alat yang biasanya dijumpai pada industri semen. Pada alat ini terdapat empat proses yaitu pengeringan, penggilingan, pemisahan, dan transport. Penelitian ini bertujuan untuk mengkaji neraca massa pada VRM. Perhitungan neraca massa dibutuhkan data massa bahan yang masuk ke dalam VRM, data yang didapat berdasarkan berat molekul bahan. Neraca massa memperhitungkan dari semua bahan-bahan masuk, yang terakumulasi dan keluar pada suatu sistem dalam waktu tertentu. Dari hasil perhitungan neraca massa diperoleh hasil laju massa yang masuk dan keluar adalah sama, yaitu sebesar 161,797 ton/h. Hasil ini sudah sesuai dengan ketentuann hukum kekekalan massa yang berlaku.
Pemanfaatan Tempurung Kelapa sebagai Katalis pada Proses Konversi Minyak Curah Menjadi Biodiesel Yustia Wulandari Mirzayanti; Erlinda Ningsih; Zain Lillahulhaq; Zuhdi Ma’sum; Chevy Renova; Yasin Wijaya
Journal of Research and Technology Vol. 6 No. 2 (2020): JRT Volume 6 No 2 Des 2020
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v6i2.351

Abstract

Vegetable oil is one of the alternative sources of raw material for fuel oil to produce biodiesel. The conversion reaction process requires the help of a catalyst to break down triglycerides into methyl esters. Therefore, this study aims to determine the performance of catalysts made from coconut shells to convert bulk oil into biodiesel. The catalyst performance is focused on biodiesel's yield parameters through the influence factor of catalyst weight, molar ratio, and %FAME. This research was conducted in three stages, namely (1) catalyst preparation, (2) application of catalyst performance through the conversion process of bulk oil into biodiesel, (3) washing of biodiesel. The first stage was catalyst preparation carried out by utilizing a coconut shell, which was first made into charcoal, then activated using H3PO4 then sulfonated with H2SO4. The second stage was the conversion process of bulk oil into biodiesel using coconut shell catalysts through a transesterification process using variations in the catalyst's weight to bulk oil (0.5; 1; 1.5; 2; and 2.5% wt/wt) and bulk oil molar:methanol ratio (1: 3; 1: 6; and 1: 9). The third stage was the process of washing biodiesel using HCl. Based on this study's results, the best catalyst weight was 2% wt/wt with a molar ratio of 1: 9 resulting in the highest yield of 89% and the FAME of 80.36%.
Calculation Study of Double Pipe Type Heat Exchanger in LNG Plant Pre-Design with Capacity 250 tons/hour Novianarenti, Eky; Ningsih, Erlinda; Rahman, Nanik Astuti
Journal of Mechanical Engineering, Science, and Innovation Vol 4, No 1 (2024): (April)
Publisher : Mechanical Engineering Department - Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jmesi.2024.v4i1.5164

Abstract

In industrial processes, heat exchangers are very important tools and are always needed. Heat exchangers can be used to increase and decrease the temperature. The most widely used type of heat exchanger is the Double Pipe or DPHE type. The LNG plant is one of the industries that uses a heat exchanger in the process of lowering the initial temperature of the LNG to change the gas phase to liquid. The aim of this study is to obtain better efficiency in the LNG manufacturing process, so it is necessary to carry out a heat exchanger design study. Based on the design calculation results, it was found that Heat Exchanger type 2-4, material Carbon steel, area 2076, 16 m2, Rd 0.005 hr ft2 oF/btu and ΔP of 4.4051 psi. It can be concluded that the heat changer design is feasible to operate safely and without any obstacles. 
Recommendation of Heat Exchanger as Refrigerant Cooler through Mass Balance Calculation in LNG Plant Process Novianarenti, Eky; Poernomo, Heroe; Ningsih, Erlinda; Sriwijayasih, Imaniah; Safitra, Arrad Ghani
invotek Vol 24 No 2 (2024): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v24i2.1208

Abstract

The liquefaction unit is a process unit for processing the desired product from the gas phase to the liquid phase. The purpose of this unit is to facilitate the transportation process with the help of refrigerants. The disadvantage of this unit is that the heat transfer is less than optimal. In addition, this study can also maximize the storage system because it can reduce the specific volume of gas up to 1/600 times to increase energy efficiency in the LNG Plant. The potential for various options to increase the efficiency of the liquefaction cycle is tried to be calculated in this study. The calculation method between the mass balance and energy balance obtained the results of the design calculation that the type 2-4 heat exchanger, Carbon steel material, area 1023, 35m2, Rd 0.001-hour ft2 °F / Btu can be concluded that the design of the heat exchanger is safe and recommended.
Thermodinamika Modelling Kesetimbangan Uap Cair dari Campuran Methanol-Air untuk Optimasi Proses Pemurnian Pratama, Angga Saptya; Bakhtiar, Dian Syaifulloh; Putra, Ganda Gautama Trisa; Basuki, Febrianus Agnos; Ningsih, Erlinda
Prosiding Seminar Nasional Sains dan Teknologi Terapan 2024: Menjembatani Energi Berkelanjutan dan Ekonomi Hijau melalui Transformasi Riset dan Teknologi T
Publisher : Institut Teknologi Adhi Tama Surabaya

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Abstract

Prediksi parameter interaksi kesetimbangan Uap Cair bertujuan untuk mengetahui kesetimbangan Uap Cair campuran Methanol-Air pada temperatur konstan 333,15 K  dan mengkorelasikan koefisien aktivitas hasil eksperimen dengan perhitungan berdasarkan pendekatan model persamaan Margules dan Van Laar untuk mendapatkan parameter interaksi. Prediksi dilakukan dengan menentukan fraksi mol campuran biner Methanol-Air dengan menggunakan persamaan Hukum Raoult termodifikasi pada temperature konstan 333,15 K, dimana tekanan uap total suatu campuran cair tergantung pada tekanan uap komponen murni dan fraksi molnya dalam campuran. Data kesetimbangan, koefisien aktivitas dan parameter interaksi yang didapat dikorelasikan dengan perhitungan pendekatan model persamaan Margules dan Van Laar. Hasil perhitungan melalui pendekatan dan korelasi menunjukkan hasil yang baik karena tingkat error dari pendekatan menggunakan metode-metode tersebut relatif kecil yaitu di bawah dari 1% . Parameter interaksi campuran Methanol-Air yang diperoleh dari hasil korelasi sangat berguna untuk optimasi kolom distilasi dalam proses pemurnian Methanol.
Analisa Neraca Panas Cooler pada Pembuatan Magnesium Klorida dengan Proses Netralisasi Wulandari, Putri Oktavia; Zulaikha, Devie Mirza; Fadilah, Siti Nur; Ningsih, Erlinda
Prosiding Seminar Nasional Sains dan Teknologi Terapan 2024: Menjembatani Energi Berkelanjutan dan Ekonomi Hijau melalui Transformasi Riset dan Teknologi T
Publisher : Institut Teknologi Adhi Tama Surabaya

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Abstract

Indonesia is a maritime country that has many natural resources on land and at sea. One of my natural sources that has not been utilized optimally is salt. Magnesium chloride (MgCl2) is a salt that can not be produced because the supply of raw materials for the magnesium chloride (MgCl2) industry has not been resolved. Magnesium chloride (MgCl2) is a compound that is included in the salt compound. Magnesium chloride production is usually used for the pulp, textile and pharmaceutical industries. The magnesium chloride compound is produced through a neutralization reaction between magnesium hydroxide and hydrochloric acid. The product of this reaction is concentrated in an evaporator, then cooled in a cooler. The cooling process in the cooler is an important stage, in this case to reduce the load on the crystallizer. Through data processing in the heat balance calculation process in the cooler, it was found that the heat of the air entering the system was 488,180,452 kJ. The heat of the air coming out is 142,858,499 kJ. The heat absorbed by the cooling water is 345,321, 953, so the total energy in the cooling water is 488,180,452 kJ. 
Estimasi Kebutuhan Listrik untuk Pabrik Etilen Diklorida dengan Kapasitas 120.000 ton/tahun Saputra, Udi Widodo; Munir, Misbahul; Ningsih, Erlinda; Saputra, Daniel; Vaggy, Wahyu Sandwi; Novianarenti, Eky
Prosiding Seminar Nasional Teknik Elektro, Sistem Informasi, dan Teknik Informatika (SNESTIK) 2025: SNESTIK V
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/p.snestik.2025.7361

Abstract

Unit utilitas adalah unit pembantu dalam suatu pabrik yang memiliki peran penting. Salah satu unit utilitas adalah kebutuhan listrik, yang sangat berkaitan dengan operasional pabrik baik dalam proses produksi dan lingkungan sekitar pabrik. Estimasi kebutuhan listrik menjadi faktor yang menentukan pabrik Etilen Diklorida mengalami untung atau rugi. Tujuan dari penelitian ini adalah mengestimasi kebutuhan listrik untuk pabrik etilen diklorida dengan kapasitas 120.000 ton/tahun. Metode penelitian ini meliputi studi literatur, pengukuran, dan standar intensitas konsumsi energi (IKE). Berdasarkan hasil estimasi yang dilakukan diperoleh bahwa  penentuan alat yang menggunakan listrik, kebutuhan listrik untuk peraltan proses dan utilitas sebesar 257 kWh, untuk penerangan sebesar 70.25 kWh, dan untuk kapasitas generator set sebesar 490.9796 kWh. 
Enhancing Critical Thinking in Junior High School through Project-Based Learning Ningsih, Erlinda; Yusof, Khairunnisa M.
International Journal of Educational Insights and Innovations Vol. 2 No. 2 (2025): June 2025 - International Journal of Educational Insights and Innovations (IJED
Publisher : PT. Technology Laboratories Indonesia (TechnoLabs)

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Abstract

This study investigates the efficacy of the Project-Based Learning (PjBL) model in enhancing critical thinking skills among junior high school students in Indonesia, addressing a documented deficit often linked to traditional, teacher-centered pedagogy. Employing a quasi-experimental, nonequivalent control group design, the study involved 60 eighth-grade students. The experimental group received a PjBL intervention focused on a real-world problem, while the control group followed a conventional lecture-based curriculum. Critical thinking skills—assessed through a validated pre-test and post-test measuring interpretation, analysis, inference, evaluation, and explanation—served as the primary dependent variable. An independent samples t-test revealed a statistically significant improvement (p<0.05) in the mean critical thinking scores for the PjBL group. In contrast, the control group exhibited negligible growth. The findings provide strong evidence that PjBL is a highly effective strategy for developing critical thinking. By engaging students in active, collaborative, and inquiry-driven processes, the model offers a practical solution to a persistent educational challenge, holding significant implications for curriculum reform and teacher development.
Design of Effective Liquefaction Unit in LNG Plant Process based on Economic Study Eky Novianarenti; Erlinda Ningsih; Heroe Poernomo; Imaniah Sriwijayasih; Arrad Ghani S; Rizal Mahmud; Abdul Kadir Djaelani
International Conference on Maritime Technology and Its Application Vol. 3 No. 1 (2025): ICOMTA : International Conference on Maritime Technology and Its Application
Publisher : Surabaya State Polytechnic of Shipbuilding

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35991/icomta.v1i1.12

Abstract

Liquified Natural Gas (LNG) is natural gas that is used as a safe, clean and efficient energy source. LNG itself is liquefied and has been processed to remove impurities and heavy fraction hydrocarbons which are then condensed into liquid at atmospheric pressure with a temperature of -160 ºC. In Indonesia, LNG has good prospects for development, both in terms of raw material potential and its market. So, it is very appropriate if an LNG plant is established in Indonesia with the aim of meeting domestic LNG needs and opening up new jobs to reduce unemployment in Indonesia. LNG is made through several stages of the process, namely the Absorption, Dehydration, Fractionation and Liquefaction processes. The factory will be established in Muara Enim, Lahan Regency, South Sumatra Province. From economic calculations, it is obtained that the return on investment is 3.08 years after the factory is established. The rate of return on capital is 38.1%, and the BEP is 37.6%. Based on the economic analysis, the LNG plant from Natural Gas is feasible to be established.
Co-Authors Abas Sato Abdul Kadir Djaelani Achmad Chusnun Ni'am Agus Budianto Alfania, Vicha Ali Altway Andika Putri Ratnasari Anggraheny, Nurul Arif, Mochammad Arlini Dyah Radityaningrum Arrad Ghani Safitra Bakhtiar, Dian Syaifulloh Basuki, Febrianus Agnos Budhikarjono, Kuswandi Kusno Chevy Renova D. Cahyo, Septian Daniel Saputra Dewi, Risty Christina Dian Yanuarita Purwaningsih Dwi Setiawan Dwicahyani, Anindya Rachma Eksalia, Lina Eky Novianarenti Eky Novianarenti Fadilah, Siti Nur Fardiansyah, Muhammad Edo H, Naufal Putra Heroe Poernomo Heroe Poernomo Imaniah Sriwijayasih Julaika, Sofiyya Kartika Udyani Lily Pudjiastuti, Lily Maharani, Agustin Misbahul Munir Mochamad Agil Yogi Parama Mustikasari, Yeni Ratu Nafiuddin, Mochammad Alfan Najuba, Maulidina Aulia Nanik Astuti Rahman Nisa, Nur Ihda Farikhatin Nur Azizah Nur, M. Fachrul Mi’rad. Parama, Mochamad Agil Yogi Pratama, Angga Saptya Puguh Rumanto Putra, Ganda Gautama Trisa Putranto, Wisnu Setyo Rizal Mahmud Romadahnia, Clarisa Novela Salsabila, Kintan Rizky Saputra, Udi Widodo Suparto Suparto Vaggy, Wahyu Sandwi W. Putrisya, Santi Wulandari, Putri Oktavia Wulansari, Dessy Yasin Wijaya Yusof, Khairunnisa M. Yustia Wulandari Mirzayanti Zain Lillahulhaq Zuchrilah, Daril Ridho Zuhdi Ma’sum Zulaikha, Devie Mirza