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All Journal LIMNOTEK - Perairan Darat Tropis di Indonesia Techno-Fish Mechanical Engineering for Society and Industry Automotive Experiences Jurnal Pengabdian Masyarakat Singa Podium (JPMSIPO)
Sri Mumpuni Ngesti Rahaju
Universitas Bung Karno
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation

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SELEKSI DAN KARAKTERISASI GANGGANG MIKRO INDIGEN AIR TAWAR SEBAGAI PENGHASIL KARBOHIDRAT UNTUK ENERGI TERBARUKAN Ngesti, Sri Mumpuni; Yani, M.; Sucahyo, S. C.; Santoso, D. A.
LIMNOTEK - Perairan Darat Tropis di Indonesia Vol 20, No 2 (2013)
Publisher : Research Center for Limnology

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

Abstract

Tujuan dari penelitian ini untuk menyeleksi dan mengkarakterisasi ganggang mikro lokal yang memiliki kadar karbohidrat tinggi yang berpotensi untuk produksi bioetanol. Hasil seleksi 15 ganggang mikro lokal air tawar dengan media BG 11 dan menghasilkan empat jenis ganggang mikro ICBB-CC (9111, 9112, 9114 dan 6354 PLB). Hasil identifikasi morfologi ke empat isolat masing-masing sebagai Crucigenia quadrata, Scenedesmus bijuga, Chlorella vulgaris , dan Chlorella vulgaris. Ke empat isolat yang terpilih dikultivasi di akuarium 5L menggunakan tiga jenis media BG 11, MBM dan PHM. Pertumbuhan isolat yang paling cepat dalam media MBM adalah ICBB 9111 C. quadrata. Produksi biomassa dari empat isolat dikembangkan di kolam kanal dari 90-100L menggunakan media MBM modifikasi pupuk TSP. Produksi biomassa kedua isolat ICBB 9111 dan 9112 adalah 0,038 dan 0,036 biomassa kering/L/hari dan karbohidrat pada 42,27 dan 21,30% (bobot kering) . Isolat ICBB 9111, C. quadrata diindikasikan sebagai yang paling potensial sebagai penghasil karbohidrat yang akan diproses untuk bioetanol.
STRATEGI PENGEMBANGAN MATA PENCAHARIAN ALTERNATIF BAGI MASYARAKAT NELAYAN DESA SADAI PROVINSI BANGKA BELITUNG DEVELOPMENT STRATEGY OF ALTERNATIVE INCOME-GENERATING FOR FISHERMAN COMMUNITIES IN SADAI VILLAGE BANGKA BELITUNG PROVINCE Septya, Fanny; Ngesti, Sri Mumpuni; Ramadona, Tomi
Techno-Fish Vol 4, No 1 (2020): Techno-Fish
Publisher : Techno-Fish

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (886.447 KB) | DOI: 10.25139/tf.v4i1.2584

Abstract

Penelitian bertujuan untuk mengidentifikasi potensi sumberdaya dan Mata Pencaharian Alternatif (MPA) serta strategi pengembangannya dalam rangka meningkatkan ekonomi masyarakat nelayan dengan tetap mempertimbangkan faktor keberlanjutan. Metode penelitian ini menggunakan pendekatan studi kepustakaan, observasi dan survey. Analisis data meliputi analisis deskriptif, analisis rating scale dan Analisis Hirarki Proses (AHP). Hasil penelitian menunjukkan mata pencaharian alternatif Prioritas 1 adalah usaha olahan berbahan ikan. Sedangkan Prioritas 2 adalah kerajinan hasil laut. Strategi pengembangan mata pencaharian alternatif dengan mempertimbangkan aspek kelakan teknis dan faktor keberlanjutan mencakup; (1) Fasilitasi sumber pembiayaan produktif, (2) Penguatan jaringan pemasaran, (3) program pendampingan yang berkesinambungan, (4) Intensifikasi program peningkatan kapasitas SDM. (5) Fasilitasi produksi ramah lingkungan
STRATEGI PENGEMBANGAN MATA PENCAHARIAN ALTERNATIF BAGI MASYARAKAT NELAYAN DESA SADAI PROVINSI BANGKA BELITUNG Septya, Fanny; Ngesti, Sri Mumpuni; Ramadona, Tomi
Techno-Fish Vol 4 No 1 (2020): Techno-Fish
Publisher : Universitas Dr Soetomo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25139/tf.v4i1.2584

Abstract

Penelitian bertujuan untuk mengidentifikasi potensi sumberdaya dan Mata Pencaharian Alternatif (MPA) serta strategi pengembangannya dalam rangka meningkatkan ekonomi masyarakat nelayan dengan tetap mempertimbangkan faktor keberlanjutan. Metode penelitian ini menggunakan pendekatan studi kepustakaan, observasi dan survey. Analisis data meliputi analisis deskriptif, analisis rating scale dan Analisis Hirarki Proses (AHP). Hasil penelitian menunjukkan mata pencaharian alternatif Prioritas 1 adalah usaha olahan berbahan ikan. Sedangkan Prioritas 2 adalah kerajinan hasil laut. Strategi pengembangan mata pencaharian alternatif dengan mempertimbangkan aspek kelakan teknis dan faktor keberlanjutan mencakup; (1) Fasilitasi sumber pembiayaan produktif, (2) Penguatan jaringan pemasaran, (3) program pendampingan yang berkesinambungan, (4) Intensifikasi program peningkatan kapasitas SDM. (5) Fasilitasi produksi ramah lingkungan
A Review of automotive green technology: Potential of butanol as biofuel in gasoline engine Sri Mumpuni Ngesti Rahayu; April Lia Hananto; Safarudin Gazali Herawan; Muhammad Zacky Asy'ari; Ahmed Sule; Muhammad Idris; Dhany Hermansyah; Shuaibu Alani Balogun; Esam Abu Baker Ali
Mechanical Engineering for Society and Industry Vol 2 No 2 (2022)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.7155

Abstract

In comparison to ethanol biofuel, butanol is considerably less corrosive, permitting the utilization of existing infrastructures used to ship gasoline or diesel for its distribution. Less corrosive also means that butanol can be utilized with no engine alteration. If butanol is mixed with water, it is less likely to split from the main fuel, thus facilitating the storage and distribution of blended fuels. Butanol also comprises a comparable energy content to petrol fuel, with 25% more energy density/liter as opposed to ethanol. All these excellent qualities have led to higher engine performance, enabling the vehicles to achieve higher mileage using butanol with no significant issue. Several challenges and future research directions are discussed and in the last section of this review article, we emphasize the importance of an optical engine to diagnose engine combustion in more detail. The consequence of using butanol on spark ignition engine on cold start and knock phenomena are also worth investigating. Results on the spray, the pressure inside the cylinder, rate of heat release, and detonation are thus required.
Acetone-Butanol-Ethanol as the Next Green Biofuel - A Review Sri Mumpuni Ngesti Rahaju; Ibham Veza; Noreffendy Tamaldin; Ahmed Sule; Anthony C. Opia; Mohammed Bashir Abdulrahman; Djati Wibowo Djamari
Automotive Experiences Vol 5 No 3 (2022)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.6335

Abstract

The development of diesel engines faces challenging targets to satisfy stringent emissions regulation. To address this issue, the use of alcohol biofuels such as methanol and ethanol has attracted numerous attention due to their physicochemical properties and the possibility to be produced from renewable sources and agricultural waste material. Compared to ethanol, longer carbon alcohol such as butanol has higher energy density and lower latent heat, hygroscopicity, aggressivity, and toxicity. It can also be produced from biomass. Yet, despite its noticeable advantages, the use of butanol in the internal combustion engine is hindered by its low production efficiency. If Acetone-Butanol-Ethanol (ABE) is further distilled and purified, pure butanol and ethanol can be acquired, but this involves an energy-intensive process, thus increasing the production cost of butanol. To solve this problem, the direct use of ABE as a biofuel is considered a promising strategy. The idea of using ABE directly in internal combustion engines is then proposed to solve the economic issue of high butanol production costs. A scoping literature review was performed to screen and filter previously published papers on ABE by identifying knowledge gaps instead of discussing what is already known. Therefore, repeated and almost identical studies were eliminated, thus reporting only the most significant and impactful published papers. In terms of the objective, this article aims to review the progress of ABE as a promising biofuel in regard to the engine performance, combustion, and emission characteristics. Focus is also given to ABE’s physicochemical properties. Despite their considerable importance, the fuel properties of ABE are rarely discussed. Therefore, this review article intends to analytically discuss the physicochemical properties of ABE in terms of their calorific value, density, kinematic viscosity, and distillation. In general, it is concluded that engine emissions such as NOx and Particulate Matter (PM) could be reduced considerably with the use of ABE. Yet, the BSFC was found to increase due to the relatively lower calorific value and density of ABE blends as opposed to gasoline or diesel fuel, thereby increasing its fuel consumption. In terms of ABE’s fuel properties, in general, ABE can be used due to its satisfying physicochemical properties. However, it should be noted that the ABE-gasoline/diesel blends are greatly influenced by each of its component ratios (acetone, butanol, ethanol).
Comparison of Various Prediction Model for Biodiesel Cetane Number using Cascade-Forward Neural Network Sri Mumpuni Ngesti Rahaju; April Lia Hananto; Permana Andi Paristiawan; Abdullahi Tanko Mohammed; Anthony Chukwunonso Opia; Muhammad Idris
Automotive Experiences Vol 6 No 1 (2023)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.7050

Abstract

Cetane number (CN) is one of the important fuel properties of diesel fuels. It is a measurement of the ignition quality of diesel fuel. Numerous studies have been published to predict the CN of biodiesels. More recently, the utilization of soft computing methods such as artificial neural networks (ANN) has received considerable attention as a prediction tool. However, most studies in the use of ANN for estimating the CN of biodiesels have only used one algorithm to train a small number of datasets. This study aims to predict the CN of 63 biodiesels based on the fatty acid methyl esters (FAME) composition by developing an ANN model that was trained with 10 different algorithms. To the best of our knowledge, this is the first study to predict the CN of biodiesels using numerous ANN training algorithms utilizing sizeable datasets. Results revealed that the ANN model trained with Levenberg-Marquardt gave the highest prediction accuracy. LM algorithm successfully predicted the CN of biodiesels with the highest correlation and determination coefficient (R = 0.9615, R2 = 0.9245) as well as the lowest errors (MAD = 2.0804, RMSE = 3.1541, and MAPE = 4.2971). Hence, the Cascade neural network trained with the LM algorithm could be considered a promising alternative to the empirical correlations for predicting biodiesel’s CN.
Pengembangan Teknologi Pengolahan Gula Aren Bagi Kelompok Tani di Desa Cisolok Kabupaten Sukabumi Sri Mumpuni Ngesti Rahaju; Syamsu Marlin; Trisna Ardi Wiradinata; Didik Sugiyanto
Jurnal Pengabdian Masyarakat Singa Podium (JPMSIPO) Vol. 1 No. 3 (2023): Oktober
Publisher : LPPM Universitas Bung Karno

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58965/jpmsipo.v1i3.16

Abstract

The object of Community Service is the Palm Sugar Farmers Group, Cisolok Village, Cisolok District, Sukabumi Regency. Where the farmer group is under the management of the Binekas Cooperative, in this activity partners are able to take part in the entire process of the Community Service Program starting from describing problems, finding solutions, planning and implementing the entire program as well as being able to socialize the results of technology application to all group members and are ready to contribute to in-kind funding for implementation Community Service Program. Problems for the Palm Sugar Farmers Group, Cisolok Village, Cisolok District, Sukabumi Regency, the first in the field of production in processing palm sugar from plantations still using traditional methods. The aim of the first activity is how to solve problems related to the production process, especially in the palm sugar crystallization process. and sieving it into ant sugar. The second objective is to improve marketing management, especially in the field of packaging that is attractive to consumers and create standard packaging for palm sugar and increase consumer knowledge through online product sales. As a result of community service activities, there has been an increase in processing with the crystallization machine and sieving of palm sugar into powdered sugar or ant sugar, from a marketing perspective there has been a further increase in broader marketing methods via the internet.
Co-Authors Abdullahi Tanko Mohammed Ahmed Sule Ahmed Sule Anthony C. Opia Anthony Chukwunonso Opia April Lia Hananto Dhany Hermansyah Didik Sugiyanto Djati Wibowo Djamari Esam Abu Baker Ali Ibham Veza Mohammed Bashir Abdulrahman Muhammad Idris Muhammad Idris Muhammad Zacky Asy'ari Noreffendy Tamaldin Permana Andi Paristiawan Safarudin Gazali Herawan Santoso, D. A. Septya, Fanny Shuaibu Alani Balogun Sucahyo, S. C. Syamsu Marlin Tomi Ramadona Trisna Ardi Wiradinata Yani, M.