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All Journal Jurnal Energi Dan Manufaktur ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Journal of Energy, Mechanical, Material and Manufacturing Engineering Jurnal Mineral, Energi dan Lingkungan QARDHUL HASAN: MEDIA PENGABDIAN KEPADA MASYARAKAT Humaniora Jurnal Pengabdian Masyarakat Bumi Raflesia ASEAN Journal of Chemical Engineering STEAM Engineering : Journal of Science, Technology, Education And Mechanical Engineering Jurnal Mineral, Energi dan Lingkungan Jurnal Surya Teknika Jurnal Difusi Industrial Research Workshop and National Seminar Jurnal Teknik Kimia dan Lingkungan
YANTI SUPRIANTI, YANTI
Politeknik Negeri Bandung
Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering 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 Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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Economical sustainability of integrated photo voltaic and hydroponic systems for rural areas Conny K Wachjoe; Hermagasantos Zein; Annisa Syafitri Kurniasetiawati; Teguh Sasono; Yanti Suprianti; Fitria Yulistiani
JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 7 No. 1 (2022)
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jemmme.v7i1.22938

Abstract

Hydroponic plantations are an effort of future agricultural technology, and this is due to population growth and increasingly saving agricultural land. Besides that, hydroponics can trigger rural economic development by opening employment opportunities for rural areas. The realization of hydroponics in rural areas that are not connected to the grid can use solar energy to circulate water continuously. The components of photo voltaic systems have been designed to the needs of the hydroponic system. Photo voltaic technology has been used for a long time for lighting in remote areas. Integrating the photo voltaic system with hydroponics is a synergistic effort to use energy productively. The case the demand for vegetables in rural areas is minimal, with limited land and the level of land productivity that depends on the availability of fertilizers. The economical method for analyzing the integrating system of photovoltaic and hydroponic systems is based on PBP, CCP, and ROROI. The results obtained for kale based on the PV-hydroponic integration system have a return on investment (PBP) of 13.5 months, cumulative cash posit (CCP) of 1.84, and Rate of Return on Investment (ROROI) of 8.01%. Adding the second and third hydroponic plant modules can reduce PBP to 6.2 months and 5.2 months, respectively. Likewise, CPP increased from 1.84 to 3.68 and 5.21, respectively. Meanwhile, ROROI rose from 8.01% to 11.43% and 13.34%, respectively.
POTRET BANK SAMPAH CEMPAKA 2 SEBAGAI MEDIA PENINGKATAN PERAN SERTA MASYARAKAT CIWARUGA DALAM PENGELOLAAN SAMPAH Ratu Fenny Muldiani; Yanti Suprianti; Sri Widarti; Defrianto Pratama; Nita Henita Koesoemah; Farida Agoes; Sri Nur Yuliyawati
Jurnal Pengabdian Masyarakat Bumi Raflesia Vol. 5 No. 3 (2022): Jurnal Pengabdian Kepada Masyarakat Bumi Raflesia
Publisher : Universitas Muhammadiyah Bengkulu

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

Abstract

Kurangnya peran serta warga atau masyarakat RW 02 Ciwaruga, Kabupaten Bandung Barat dalam pengelolaan sampah walaupun telah memiliki Bank Sampah Cempaka 2, yang dibentuk sejak tahun 2016. Metode pelaksanaan kegiatan PKM ini  disesuaikan  dengan  kondisi dan waktu kegiatan Bank Sampah dengan langkah-langkah melakukan kunjungan dan diskusi dengan kader penggiat bank sampah, memotret dan mensosialisasikan tingkat keberhasilan bank sampah dilihat dari manfaat secara sosial dan ekonomi, serta merumuskan penyuluhan dan mempersiapkan berbagai media sosialisasi. Perilaku memilah sampah berpotensi untuk ditumbuhkan sebagai gerakan massal dan adanya Bank Sampah, secara ekonomi, sangat membantu dalam menciptakan pekerjaan dan menambah penghasilan masyarakat RW 02 Ciwaruga. Kata Kunci: Bank Sampah, Dampak Sosial, Ekonomi, Memilah Sampah  
Pengaruh Variasi Bentuk Adsorben Karbon Aktif dan Scale-up Kolom Terhadap Kinerja Adsorpsi CO2 Dalam Biogas Yanti Suprianti; Yoga Rahmat Pangestu; Purwadi Iriani
Jurnal Energi Dan Manufaktur Vol 15 No 1 (2022)
Publisher : Department of Mechanical Engineering, University of Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JEM.2022.v015.i01.p04

Abstract

Biogas as a renewable energy source is now starting to be considered as an alternative energy to replace BBM and CNG. Biogas from cow dung generally has a concentration of 50-70% CH4 as a substance that can be used as fuel, accompanied by 25-50% CO2, 0.3-3% N2, 1-5% H2, and H2S. The presence of accompanying substances, especially CO2, which has no calorific value (cannot be burned), can reduce the overall calorific value of biogas. One way to separate the CO2 gas is by adsorption. However, at a small column capacity, the adsorbent is often saturated quickly after being operated for a certain time. One way to get around this is to make the adsorbent into a more compact form, such as pellets. By combining granular and pellet activated carbon, this study wanted to identify the effect of variations to produce the best biogas composition and compare its performance when scaled up. The results showed that mixture A (70% granular activated carbon and 30% pellet) produced the best biogas, namely 83.1% in the initial column and 89.3% in the scale up column, with CO2 impurities removed and a small amount of other gases. The absorption performance in the form of adsorption effectiveness showed that each variation showed 100% effectiveness. The breakthrough curve shows that mixture C (30% granular activated carbon and 70% pellet) gave the highest resistance for 7 minutes on the initial column and 10 minutes on the scale up column. The volume of biogas that was adsorbed, the volume of biogas/column height, and the total amount of remove solute were best indicated by mixture A with 72 Liters, 180 Liters/m, and 8,208 Liters in the initial column, and 159 Liters, 212 Liters/m, respectively. and 21,942 Liters in the scale up column. Scale up has a significant impact on the performance of mixed C adsorbent with an increase in the volume of biogas that is adsorbed by 2.75x, the volume/height of the column increases by 1.47x, and the total of remove solute by 3.29x. Keywords: adsorption, adsorbent, granular activated carbon, pellet, scale up
Fermentasi Anaerobik Biogas Dua Tahap Dengan Aklimatisasi dan Pengkondisian pH Fermentasi Purwinda Iriani; Yanti Suprianti; Fitria Yulistiani
Jurnal Teknik Kimia dan Lingkungan Vol. 1 No. 1 (2017): October 2017
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (964.831 KB) | DOI: 10.33795/jtkl.v1i1.16

Abstract

Generally, biogas production on the household scale is using one-stage anaerobic fermentation technology, which accommodates two main processes of biogas production, namely acetogenesis and methanogenesis. An obstacle of using one-stage biogas digester is the imbalance of the fermentation process that indicated by the increase of organic load rate and shorter retention time that lead to un-optimal biogas productivity. This research undertook the application of two-stage anaerobic digestion, supported by adjusting the initial pH for both acetogenic and methanogenic processes. Firstly, the research initiated by acclimatization (activation) process of acetogenic and methanogenic bacteria via fermentation in laboratory scale (19 L) digesters, separately. The results of acetogenic bacteria acclimatization process on cow dung media showed the pH stability needed for the reaction acetogenic, in the range of 5-6, while the control showed the pH changes still in the neutral pH range (6-7). The substrate from lab-scale acetogenic and methanogenic digester, then used as a starter for pilot-scale digester (125 L and 500 L, respectively). The mixture of water and cow dung were adjusted at initial pH 5.5 on acetogenic digester for 2 weeks. Those material were used for biogas production in the methanogenic digester. The result of the methanogenic process showed an increasing volume of biogas and the composition of methane (CH4) in the biogas. The highest CH4 composition was obtained on the 20th day, which reached 74.82%, and the highest volume of biogas production was at day 22, with the rate of 8.87 L/day. The highest energy potential obtained was 217.66 kJ/day.
DISEMINASI ALAT PROSES PENGERING SURYA (SOLAR DRYER) UNTUK INDUSTRI PRODUK MAKANAN PADA UMKM BINAAN PEMERINTAH KOTA CIMAHI Tina Mulya Gantina; Annisa Syafitri Kurniasetiawati; Yanti Suprianti; Rusmana; Sapto Prayogo; Herawati Budiastuti
Jurnal Difusi Vol 4 No 1 (2021): Jurnal Difusi
Publisher : Pusat Penelitian dan Pengabdian Masyarakat (P3M) Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/difusi.v4i1.2630

Abstract

Tim pengabdian kepada masyarakat Jurusan Teknik Konversi Energi (JTKE) bersama dengan pihak Pemerintah Kota Cimahi - Dinas Perdagangan Koperasi UKM dan Perindustrian Kota Cimahi berkoordinasi dalam upaya mendukung pengembangan usaha kecil dan menengah yang berasal dari jenis kelompok usaha penyediaan makanan lainnya. Salah satu pengusaha yang termasuk dalam jenis kelompok usaha tersebut adalah produsen makanan olahan dari labu dengan nama usaha “Roemah Labu”. “Roemah Labu” telah memiliki pasar yang cukup luas serta produk yang konsisten yaitu pangsit labu dan dodol labu. Saat ini “Roemah Labu” sangat memerlukan alat pengering untuk mendukung proses produksi keripik labu (dalam tahap pengembangan) dan berbagai produk makanan olahan dari limbah bahan baku labu, yaitu kulit dan biji labu untuk menambah varian produknya. Adapun jenis pengering yang coba didiseminasikan merupakan sebuah alat pengering surya sederhana dengan tujuan untuk memperbaiki kualitas proses produksi dari segi higienitas maupun kuantitas varian produk. Alat pengering surya (Solar Dryer) dirancang agar independen dari sumber energi selain panas matahari. Alat pengering ini terdiri atas dua bagian utama, yaitu ruang pengering dengan lima susun tray berukuran 60 x 60 cm dan solar collector berukuran 1.05 x 1.3 m. Banyaknya produk labu tambahan yang dapat dihasilkan dalam satu kali produksi dari setiap kg labu, yaitu 111 gram kulit labu kering (cuaca cerah), 29 gram kulit labu kering (cuaca hujan), dan 34 gram biji labu kering/ matang.
OPTIMASI ENERGI PADA CLINKER GRATE COOLER DI INDUSTRI SEMEN Fajar Ramadhan; Yanti Suprianti
Steam Engineering Vol. 5 No. 1 (2023): STEAM Engineering, Vol. 5, No. 1, September 2023
Publisher : Program Studi Pendidikan Teknik Mesin, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37304/jptm.v5i1.10678

Abstract

The clinker cooling process within the cement cooler is a highly significant aspect of cement production. It not only impacts the quality of clinker but also plays a role in heat recovery to reduce fuel consumption in the kiln and preheater. In the cement industry, energy usage is divided into 78% electricity and 22% thermal energy, with almost all thermal energy consumption occurring during the clinker production process (preheater, kiln, and cooler). The performance of the clinker cooler is indicated by the value of the recovery efficiency under existing conditions, which is 69.3%, falling below the standard range of 70-75%. Energy conservation efforts in the cement industry involve utilizing the heat generated from the clinker cooling process as a supply of combustion air for the kiln and preheater. The Reduced Fall Through (RFT) type grate plate system with compartments is unable to properly control the flow of cooling air from the cooling fan to the clinker bed surface. To optimize the cooling process and heat recovery, a redesign of the clinker cooler is carried out by replacing the RFT type grate plate with a Control Flow Grate (CFG) type in compartments five, located in rows 43 to 48. Simulations are employed to support this analysis and design, utilizing ANSYS 18.2. The goal of these simulations is to assess airflow parameters and heat transfer. The clinker cooler recovery efficiency under existing conditions is 69.3%. However, following the technological design process, the efficiency performance increases to 72.9%.
Perancangan Ruang Bakar Circulating Fluidized Bed Sebagai Upaya Perbaikan Kinerja Pembangkitan Uap Di Pabrik Tekstil Fadhila, Nisya Fitri; Suprianti, Yanti; Muldiani, Ratu Fenny
Prosiding Industrial Research Workshop and National Seminar Vol. 14 No. 1 (2023): Vol 14 (2023): Prosiding 14th Industrial Research Workshop and National Semina
Publisher : Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/irwns.v14i1.5414

Abstract

Chain grate stoker boiler di pabrik tekstil digunakan sebagai komponen untuk memenuhi kebutuhan uap di bagian produksi. Berdasarkan standar ASME ukuran batubara untuk boiler jenis ini yaitu kisaran 32 mm. Hal tersebut juga sudah diterapkan pada SOP pabrik, namun pada pelaksanaannya ukuran batubara tidak sesuai dengan SOP tersebut melainkan kurang dari ukuran yang sudah ditentukan, sehingga mengakibatkan penurunan efisiensi. Akibatnya pabrik menggunakan tambahan bahan bakar hidrogen hasil elektrolisa air sebagai upaya meningkatkan efisiensi. Namun efisiensi hanya dapat mencapai 68%, sedangkan efisiensi standar desain 75%. Ruang bakar dengan jenis circulating fluidized bed (CFB) memiliki karakteristik yaitu efisiensi pembakaran yang tinggi, lebih ramah lingkungan, fleksibilitas bahan bakar yang digunakan dan ukuran bahan bakar ≤ 6 mm. Ruang bakar CFB memanfaatkan kondisi partikel padatan tersuspensi udara pada suatu kecepatan tertentu hingga tidak terlihat perbedaan antara padatan dan aliran udara (fluidisasi). Perancangan ruang bakar dilakukan untuk kapasitas uap 3320.156 kW pada tekanan 7 bar. Dihasilkan ruang bakar yang lebih ringkas dengan dimensi yaitu lebar 0,657 m; panjang 1,314 m; tinggi 3,035 m dengan kecepatan fluidisasi 1,409 m/s dan efisiensi 82,713%. Menggunakan ruang bakar CFB dapat mereduksi penggunaan batubara menjadi 14,876 ton yang semula 18 ton per hari dan tidak dibutuhkan biaya untuk mesin elektrolisa.
The Efficiency of κ-Carrageenan-Chitosan-PVA-MWCNTs Membranes in Removing Methylene Blue, Rhodamine B, Bromocresol Purple, and Murexid from Water Widarti, Sri; Suprianti, Yanti; Kurniasetiawati, Annisa Syafitri; Tritjahjono, Rachmad Imbang
ASEAN Journal of Chemical Engineering Vol 23, No 3 (2023)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ajche.78794

Abstract

The electrocoagulation method has been proven to be highly effective in removing metal ions from water, with a removal efficiency of over 97%. However, in terms of removing organic pollutants such as synthetic dyes, the efficiency of electrocoagulation is still relatively low. A hybrid approach combining electrocoagulation with membrane filtration has been proposed to enhance the removal of organic contaminants. Eco-friendly membranes made from renewable natural polymers like carrageenan and chitosan, reinforced with synthetic polymers such as polyvinyl alcohol and carbon nanotubes, have shown to be promising for this application. In this study, membranes with varying chitosan/carrageenan ratios of 0.2, 0.33, 0.5, and 0.71 (g/g) were used to remove synthetic dyes, including methylene blue, rhodamine B, bromocresol purple, and murexid, at a concentration of 200 ppm from 8.5 ml of water. From the SEM images, the four membranes have almost the same surface and cross-section morphology. The results showed that the membrane with a chitosan/carrageenan ratio of 0.71 exhibited the highest removal efficiency for all synthetic dyes. The parameter affecting the membrane’s removal efficiency is the interaction between the membrane and synthetic dyes. Murexid, an anionic dye, achieved a 100% removal efficiency, surpassing cationic dyes such as rhodamine B and methylene blue. Besides interactions, the dye’s molecular size determines the removal’s efficiency. The molecular size of rhodamine B is larger than that of methylene blue, and the removal efficiency of rhodamine B (98.4%) is greater than methylene blue (91%). Bromocresol purple is almost the same size as rhodamine B but not ionic because it has the lowest removal efficiency of 34.55%.
Analisis Perfoma Multi Effect Desalination dengan Metode Overall Equipment Effectiveness Sebelum dan Sesudah Perbaikan di PLTU X Fauziyyah, Zaida Sahla; Sasono, Teguh; Suprianti, Yanti
JURNAL SURYA TEKNIKA Vol. 11 No. 1 (2024): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v11i1.7368

Abstract

A multi-effect desalination machine is a device capable of producing fresh water for power plant and domestic water needs. The problem encountered is a decrease in the fresh water produced, which is related to the effectiveness of the multi-effect desalination machine. The method used to measure the machine's effectiveness is the Overall Equipment Effectiveness method. This study aims to calculate the OEE value of the multi-effect desalination machine before and after maintenance and to identify common issues by determining an action plan. The analytical method used to determine failure defense tasks is the Failure Mode and Effect Analysis method. The results showed that the OEE value after maintenance increased compared to the OEE value before maintenance, with the highest OEE value recorded at 91% on August 31 - September 1, 2023. Of the 12 types of damage that occurred, 66.67% affected the performance rate parameter and 33.33% affected the availability rate parameter. The most effective action plan in improving the OEE value after maintenance was the acid cleaning process.
Sistem Monitoring pH dan Volume Biogas Digester Dua Tahap menggunakan Mikrokontroler UTAMI, SRI; IRIANI, PURWINDA; SUPRIANTI, YANTI
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 7, No 1: Published January 2019
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v7i1.126

Abstract

ABSTRAKBiogas merupakan salah satu sumber energi terbarukan yang murah dan berkategori non-polusi. Kebutuhan untuk memonitor serta mengontrol plant biogas bertambah seiring kebutuhan mengoptimalkan stabilitas proses untuk mendapatkan performansi yang tinggi. Monitoring biogas dapat memberikan gambaran keseluruhan proses pembangkitan biogas dan digunakan untuk memprediksi proses fermentasi yang berlangsung. Selain itu, dapat pula meminimalkan gagalnya proses fermentasi dan menghasilkan biogas secara optimal. Dalam penelitian ini proses monitoring dilakukan pada digester dua tahap berbahan dasar ampas tahu dan difokuskan pada pH dan volume biogas yang dihasilkan menggunakan dfrobot sku Sen0160 dan YF-S201 serta solenoid valve sebagai aktuatornya. Hasil penelitian menunjukkan bahwa set point pH 5.3 pada digester asetogenesis dapat dicapai pada hari ke enam untuk tiga percobaan. Dalam digester metanogenesis nilai pH dapat dijaga pada pH 7 ±0.3. Jumlah volume biogas tertinggi yang dihasilkan sebesar 97.2 L.Kata kunci: digester dua tahap, fermentasi, asetogenesis, metanogenesis ABSTRACTBiogas is one of an inexpensive and non-pollution renewable energy source. A requirement for optimization and stabilization of biogas plant affected on the need of monitor and control system in the plant. Biogas monitoring system represents a process in biogas generation and has the ability to predict fermentation. In addition, the system built can be used to control the fermentation process and to minimize the failure of the process. This means the process will produce biogas optimally. In this research, the monitoring system was used on two stages digester using tofu as raw material. pH and biogas volume produced are two focuses in this study using SKU Sen0160 dan YF-S201 as sensors and solenoid valve as an actuator. For three experiments data show, set point for pH (5.3) is achieved at day sixth for acetogenesis digester. For methanogenesis, pH can be maintained at 7 ±0.3. The highest volume of biogas produced was 97.2 L.Keywords: two stages digester, fermentation, acetogenesis, methanogenesis digester
Co-Authors Aditya Fajar Nugraha Annisa Syafitri K Annisa Syafitri Kurniasetyawati Arya Wulung Defrianto Pratama Fadhila, Nisya Fitri Fajar Ramadhan Farida Agoes Farida Agoes Fauziyyah, Zaida Sahla Herawati Budiastuti Hermagasantos Zein Hernawan, Kholiq Iriani, Purwinda IRIANI, PURWINDA KURNIASETIAWATI, ANNISA Kurniasetyawati, Annisa Syafitri Kurniawan Kurniawan Laksono Trisnantoro Muldiani, Ratu Fenny Nita Henita Koesoemah Purwadi Iriani PURWINDA IRIANI Rusmana Sapto Prayogo Sri Nur Yuliyawati Sri Nuryuliyawati SRI UTAMI Sri Utami Sri Widarti Sri Widarti, Sri Susilawati Teguh Sasono TINA MULYA GANTINA Tritjahjono, Rachmad Imbang Wachjoe, Conny K. WACHJOE, CONNY KURNIAWAN Yoga Rahmat Pangestu Yulistiani, Fitria