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All Journal Rekayasa Mesin The Journal of Pure and Applied Chemistry Research REKAYASA Journal of Robotics and Control (JRC) Juvenil: Jurnal Ilmiah Kelautan dan Perikanan
Nizar Amir
Mechanical Engineering, University Of Trunojoyo Madura
Aerospace Engineering Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Engineering Environmental Science Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Physics

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Analisa Performa SOFC Proton ElektrolitSistem Hibrid dengan Bahan Bakar Alternatif Amir, Nizar; Purnomo, Reymond
Jurnal Rekayasa Mesin Vol 4, No 2 (2013)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (210.985 KB)

Abstract

This paper studied the modeling of proton conducting electrolyte SOFC hybrid system fueled by biofuel. The hybrid system consist of a proton conducting electrolyteSOFC stack, a gas turbine, a combustor, two external reformers, two compressors and heat exchangers. The results of study show that power of protonconducting electrolyte SOFC stack and also gas turbine power output when mixing methane with biofuel in externally reformed proton SOFC hybrid system ishigher than pure methane, vice versa, the system efficiency is lowerthan pure methane as a fuel. However, when mixing methane with biofuel, the system efficiency increases with increasing operating pressure.
Techno-Economic Feasibility Assessment of Solar PV Water Pumping System In Dryland: Case Study In Madura Amir, Nizar
Rekayasa Vol 14, No 2: Agustus 2021
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v14i2.10442

Abstract

Indonesia has enormous solar radiation potential, and it can be converted to electrical energy by utilizing solar PV systems. Mainly the irrigation of paddy rice fields in Indonesia dependent on a diesel-powered water pumping system. A solar PV system can replace this method, and it generates several benefits. The present study proposed the utilization of a solar PV system to drive the water pump based on a 100% renewable power supply. The technological and economic viability assessment of solar PV water pumping system to irrigate paddy rice filed at Telang village, Bangkalan, Indonesia, is investigated. The HOMER software has been used to generate the optimal configuration of a renewable system. Initial capital, net present cost, and cost of energy will evaluate as economic assessment criteria. The solar PV and diesel generator water pumping system also compared. The results showed that for water pumping systems, a solar PV system is more cost-effective than a diesel generator. It has lower annual operational and maintenance costs, 100% renewable energy penetration, and free energy cost.
Pengembangan Studi Gasifikasi Tongkol Jagung Untuk Meningkatkan Performa Reaktor Downdraft Dengan Masukan Dua Udara Bertingkat Irawan, Ibnu; Amir, Nizar; Budiarto, Khairil
Rekayasa Vol 14, No 1: April 2021
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v14i1.9172

Abstract

Gasification is a technology for converting solid biomass into syngas. Corn cobs biomass is converted into pellets to obtain more homogeneous fuel. The downdraft gasifier type is used to have low tar content. The research was conducted to see the effect of the ratio of air and ER on the reactor temperature and the gas composition of CO, H2 and CH4. For pyrolysis and oxidation zones, air enters with variations (AR.Pir-Ox), namely 0%; 70%; 80%; and 90% in the intake air 14.5; 19.3; and 24.1 Nm3 / hr of E.R 0.3, 0.4, and 0.5. The air intake for each zone is regulated using a tap. Temperature measurement using type K thermocouple. Downdraft reactor performance is obtained by looking at the syngas content in CO, H2, and CH4 meters. The results showed the effect of AR.Pir-Oks with an air input of 24.10 Nm3 /h with E.R 0.5 having the highest temperature of 910oC, in the oxidation zone. This stratified air input plays a role in increasing the temperature along the altitude zone. The increase in the introduced oxygen produces an increase in heat. Syngas production in an air flow of 19.3 Nm3 / hour with a ratio of 90% pyrolysis and oxidation zone (ARPir-Oks), is the reactor produces gas products with a composition of 22.5% CO, 0.96% CH4, and 15.55 H2 %. The results of this test prove that the air entering the pyrolysis zone can provide additional syngas composition.
Effects of Dietary Salt-Based Minerals and Phosphorus Supplements on Mean Body Weight, Survival Rate and Feed Conversion Ratio of White Shrimp Reared In Brackish Water Amir, Nizar; Efendy, Makhfud; Hidayat, Agriananta Fahmi
Rekayasa Vol 14, No 3: Desember 2021
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v14i3.11808

Abstract

This study aimed to examine the impact of dietary salt-based mineral and phosphorus supplements on mean body weight, survival rate, and feed conversion ratio of Litopenaeus vannamei (white shrimp) reared in brackish water. The experiment was performed randomized design with three replicates in each treatment used twelve 40 L rectangular polymethyl methacrylate containers reared 45 days. The four treatments in this study were based on the concentration of salt-based mineral and phosphorus supplements (control or 0 ppm, one ppm, two ppm, and three ppm) in dietary of white shrimp. The results showed that using salt-based mineral and phosphorus supplements in dietary of white shrimp positively impacts mean body weight, survival rate, and feed conversion ratio. Increasing the concentration of salt-based mineral and phosphorus supplements increased mean body weight and survival rate and reduced feed conversion ratio of white shrimp. The mean body weight, survival rate, and feed conversion ratio of white shrimp were achieved with three ppm of dietary salt-based mineral, and phosphorus supplements reared 45 days was 5.98 gr, 88.57%, and 1.45, respectively.
Analysis Proton Conducting Electrolyte IT-SOFC Hybrid System Exhaust Gas With External Reforming of Biofuel Nizar Amir; I.N.G. Wardana
The Journal of Pure and Applied Chemistry Research Vol 2, No 2 (2013)
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (321.555 KB) | DOI: 10.21776/ub.jpacr.2013.002.02.134

Abstract

In this analysis, a hybrid system containing proton SOFC (P-SOFC) combine with micro gas turbine (MGT) with biofuel external reforming is investigation to decrease the greenhouse gases problem facing in electrical power plant. The hybrid system consist of a proton solid oxide fuel cell stack, a micro gas turbine, a combustor, compressors, heat exchangers and external reformer. The main operating parameter such as, fuel utilization and steam - carbon ratio is determined in this analysis.
ANALISA KANDUNGAN Kalsium(Ca) PADA AIR PADA PRODUKSI GARAM MADURIS Aulia Washielatur Rohma; Makhfud Efendy; Nizar Amir; Nike Ika Nuzula
Juvenil Vol 2, No 4 (2021)
Publisher : Department of Marine and Fisheries, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/juvenil.v2i4.12826

Abstract

ABSTRAKMetode maduris merupakan metode yang menggunakan media tanah sebagai lahannya, bouzem, kolam peminihan, dan meja kristalisasi. Media tanah yang akan digunakan melalui proses kesap dan guluk terlebih dahulu, tujuan dari kesap dan guluk untuk meratakan tanah agar tidak mudah rusak. Penelitian ini memiliki tujuan untuk mengetahui kandungan kadar Kalsium (Ca) pada air dari masing masing kolam produksi. Sampel air terdiri dari air bahan baku, kolam bouzem, kolam peminihan, meja kristalisasi garam maduris. Metode penelitian yang digunakan Metode Deskriptif dengan pendekatan Kuantitatif,  pengambilan sampel air untuk sampel air laut menggunakan alat water sampler. Sampel air yang diambil untuk dianalisa sebanyak 1L, kemudian sampel air dimasukkan kedalam alumunium pack. Pengambilan sampel dilakukan di PT Garam Persero  Pamekasan. Sampel sedimen dan air dianalisa kandungan kalsium  menggunakan metode uji Spektrofotometer Serapan Atom (SSA) di Laboratorium Balai Riset dan Standardisasi Industri Surabaya. Hasil penelitian menunjukkan  untuk kandungan kalsum pada sampel air laut sebesar 565.58mg/L, bouzem sebesar 507.25 mg/L, peminihan sebesar 1254.6 mG/L dan meja kristalisasi tanah sebesar 286.05 mg/L. Hasil tertinggi diperoleh di kolam peminihan yaitu sebesar 1254.6 mg/L.Kata Kunci: Kalsium, Air bahan baku, Air bouzem, Air peminihan, Air meja Kristalisasi MadurisABSTRACTThe Maduris method is a method that uses soil as the medium, bouzem, hatchery pond, and crystallization table. Soil media that will be used goes through the kesap and guluk process first, the purpose of kesap and guluk is to level the soil so it is not easily damaged. This study aims to determine the content of Calcium (Ca) levels in the water from each production pond. The water samples consisted of raw material water, bouzem pond, peminihan pond, Maduris salt crystallization table. The research method used is descriptive method with a quantitative approach, taking water samples for seawater samples using a water sampler. 1L of water samples were taken for analysis, then the water samples were put into an aluminum pack. Sampling was carried out at PT Garam Persero Pamekasan. Sediment and water samples were analyzed for calcium content using the Atomic Absorption Spectrophotometer (AAS) test method at the Laboratory of Research and Industrial Standardization in Surabaya. The results showed that the calcium content in seawater samples was 565.58 mg/L, bouzem was 507.25 mg/L, purification was 1254.6 mG/L and soil crystallization table was 286.05 mg/L. The highest yield was obtained in the hatchery pond, which was 1254.6 mg/L.Keywords: Calcium, Raw material water, Bouzem water, Peminihan water, Maduris crystallization table water
ANALISA KADAR MAGNESIUM (Mg) PADA AIR BAHAN BAKU GARAM DI PT. GARAM PERSERO PAMEKASAN Nurul Khodariya; Makhfud Efendy; Nizar Amir; Nike Ika Nuzula
Juvenil Vol 2, No 4 (2021)
Publisher : Department of Marine and Fisheries, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/juvenil.v2i4.12827

Abstract

ABSTRAKKabupaten Pamekasan merupakan salah satu kabupaten yang berada pada 6° 51’ - 7° 31’ LS dan 113° 19’ - 113° 58’ BT. Kabupaten Pamekasan sebelah baratnya  berbatasan dengan kabupaten Sampang dan sebelah timur berbatasan dengan kabupaten Sumenep. Luas Wilayah kabupaten Pamekasan 79, 230 Ha yang terdiri dari 13 kecamatan dan 189 Desa. Tujuan dari Penelitian ini yaitu mengatahui kandungan Magnesium (Mg) pada air bahan baku garam menggunakan Metode Spektrofotometer (SSA) di laboratorium Balai Riset dan Standarisasi Industri Surabaya. Analisa data pada penelitian ini mnenggunakan Uji Anova one way. Hasil analisa kandungan Magnesium (Mg) pada air bahan baku yaitu 219,9 mg/L dan 223,1 Mg/L, Pada Bozem yaitu 32532,5 mg/L dan 31945 mg/L. Kandungan Magnesium (Mg) pada peminihan yaitu 11892,5 mg/L dan 11740 mg/L. Pada Meja Kristalisasi tanah yaitu 245,9 mg/L dan 243,8 mg/L. Kandungan Magnesium pada setiap pengulangan analisa air bahan baku, bozem, peminihan dan meja kristalisasi tanah dimana nilai P-Value sebesar 0,9867. Nilai P-Value kadar Magnesium nilai alpha (α) atau (0,9867 0,05) jadi tidak ada Perbedaan rata-rata kandungan magnesium.kata kunci: Air bahan baku, Bozem, Peminihan, Meja Kristalisasi Maduris, dan Magnesium ABSTRACTPamekasan Regency is one of the regencies located at 6° 51' - 7° 31' South Latitude and 113° 19' - 113° 58' East Longitude. Pamekasan Regency is bordered by Sampang Regency to the west and Sumenep Regency to the east. The total area of Pamekasan Regency is 79, 230 Ha, which consists of 13 sub-districts and 189 villages. The purpose of this study was to determine the content of magnesium (Mg) in salt water using the Spectrophotometer Method (SSA) in the laboratory of the Surabaya Industrial Standardization and Research Institute. Analysis of the data in this study using the one-way ANOVA test. The results of the analysis of the content of Magnesium (Mg) in raw water are 219.9 mg/L and 223.1 Mg/L, In Bozem are 32532.5 mg/L and 31945 mg/L. The content of magnesium (Mg) in the selection is 11892.5 mg/L and 11740 mg/L. On the soil crystallization table, which is 245, Magnesium content in each iteration of raw material water analysis, bozem, purification and soil crystallization table where P-Value value is 0.9867. P-Value value for Magnesium content alpha value (α) or (0.9867 0.05) sono difference in mean magnesium content.keywords: Raw material water, Bouzem, Peminihan, Madurase Salt Method, and Magnesium
Analisis Tekno-Ekonomi Produksi Pupuk Cair Ramah Lingkungan dari Limbah Air Budidaya Ikan Berbasis Masyarakat Nizar Amir; Hakam Muzakki; Hoomzah Nur Alisiyah; Raden Apriyanto
Rekayasa Vol 15, No 2: Agustus 2022
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v15i2.15494

Abstract

There are two important aspects of the implementation of this research, namely the technical aspect, which includes the production and analysis of the quality of liquid fertilizer products from fish farming wastewater, and the economic aspect, which includes an economic analysis on an industrial scale. Liquid fertilizer is made from fish farming wastewater obtained from Bangkalan Regency, East Java Province, Indonesia. The process of producing liquid fertilizer from fish farming wastewater includes various processes, from mixing to fermentation. The physical characteristics of liquid fertilizer from fish farming wastewater are in accordance with existing standards. Without the addition of nutrients, liquid fertilizer from fish farming wastewater has nitrogen (N) 1.33%, phosphorus (P) 0.44%, and potassium (K) 0.38%. Although the nutrient content of liquid fertilizer from fish farming wastewater is still below the standard of SNI 02-4958-2006, in industrial-scale production processes, adding nutrients is very necessary. In the economic analysis, all economic parameters are declared feasible and profitable, with an NPV value of Rp. 5,524,899,840, IRR 31,79%, PP 3.15 years and B/C ratio 3.1. This study shows a positive value on the technical and economic aspects. Finally, this research can be used as a reference by academics, government, and entrepreneurs in the technical and economic aspects of producing liquid fertilizer from fish farming wastewater.
Optimalisasi Penggunaan Energi Terbarukan untuk Desa Mandiri Energi dan Ramah Lingkungan Nizar Amir; Makhfud Efendy; Sabarudin Akhmad; Fiki Milatul Wahyu; Rafly Firman Surya Putra
Rekayasa Vol 16, No 1: April 2023
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v16i1.19119

Abstract

The residents of West Waru Village, Pamekasan, are renowned for their high numbers of cows, leading to a steadily increasing amount of cow dung that contaminates the environment. To combat this problem, we must find ways to utilize cow manure. There is a potential solution in the form of biogas generator technology, which can convert cow manure into energy. This research seeks to develop and optimize its design in order to provide renewable electricity for Waru Barat Village, Pamekasan. It involves the use of HOMER software to simulate and determine the optimal design. Technical, economic and environmental indicators are used as the main parameters in this research's output. The cost per kWh of generated energy stands at Rp. 1,076/kWh - a far cheaper alternative than electricity from PLN (Rp. 1,500/kWh) - making it highly beneficial for all stakeholders when constructing renewable energy power plants in rural Indonesia.
Techno-Economic and Environmental Analysis of an On-Grid and Off-Grid Renewable Energy Hybrid System in an Energy-Rich Rural Area: A Case in Indonesia Umam, Faikul; Wahyu, Fiki Milatul; Efendi, Mochamad Yusuf; Amir, Nizar; Gozan, Misri; Asmara, Yuli Panca
Journal of Robotics and Control (JRC) Vol 5, No 5 (2024)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jrc.v5i5.22633

Abstract

Developing a dedicated renewable energy hybrid system is a viable option for extending access to electrical energy in energy-rich rural areas. This study conducted a feasibility analysis of using a hybrid energy system, combining solar photovoltaic, wind, and biogas, to generate electricity and meet the energy needs of the rural area. West Waru Village is selected as the case study area for this research because it has abundant renewable energy sources. The Hybrid Optimization of Multiple Energy Resources (HOMER) tools is employed for modeling and optimizing the hybrid energy system, offering a comprehensive analysis encompassing technical, economic, and environmental aspects. Furthermore, the study's findings were further analyzed through a sensitivity analysis, considering unpredictable factors such as village load consumption, solar radiation, wind speed, and biomass availability. Additionally, the study’s results reveals that the renewable energy hybrid system can meet nearly 80% of the rural area's electrical energy requirements at a cost of $0.16 per kWh, resulting in the reduction of 8.4 million kg of carbon dioxide emissions. These findings can serve as a baseline for stakeholders in developing renewable energy systems in rural areas.
Co-Authors Aulia Washielatur Rohma Budiarto, Khairil Faikul Umam Fiki Milatul Wahyu Hakam Muzakki Hidayat, Agriananta Fahmi Hoomzah Nur Alisiyah I.N.G. Wardana Ibnu Irawan Makhfud Efendy Makhfud Efendy Makhfud Efendy, Makhfud Misri Gozan Mochamad Yusuf Efendi, Mochamad Yusuf Nurul Khodariya Nuzula, Nike Ika Raden Apriyanto Rafly Firman Surya Putra Reymond Purnomo Sabarudin Akhmad Wahyu, Fiki Milatul Yuli Panca Asmara