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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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Journal : REKAYASA

 1 
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.
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.
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