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All Journal Tekno - Pedagogi : Jurnal Teknologi Pendidikan Jurnal Sains dan Teknologi Pangan Aceh International Journal of Science and Technology
Ichwana Ichwana
Program Studi Teknik Pertanian, Fakultas Pertanian, Universitas Syiah Kuala
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Other

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RANCANG BANGUN MESIN PEMBANGKIT LISTRIK TENAGA BIOMASSA (PLTBm) PADA DAERAH TERISOLASI DARI JARINGAN LISTRIK PT.PLN (Persero) DI INDONESIA MELALUI APLIKASI TAR WET SCRUBBER DAN GAS FILTER Siregar, Kiman; Alamsyah, Rizal; Ichwana, Ichwana; Sholihati, Sholihati; B.Tou, Saminuddin
Jurnal Sains dan Teknologi Pangan 2017: PROSIDING SEMINAR NASIONAL FKPT-TPI 2017
Publisher : Jurnal Sains dan Teknologi Pangan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (25.875 KB)

Abstract

Mesin gasifikasi bertujuan untuk menghasilkan gas mampu bakar (CO, H2, CH4). Gas mampu bakar yang dihasilkan dapat digunakan untuk menggantikan fossil fuel untuk menjalankan gas engine. Namun gas mampu bakar yang dihasilkan tersebut mengandung tar (kotoran) yang masih tinggi, sehingga terjadi pengotoran filter engine dan mengakibatkan mesin tidak dapat dioperasikan dalam waktu yang cukup lama. Penelitian ini bertujuan untuk mendisain Mesin Pembangkit Listrik Tenaga Biomassa (PLTBm) pada daerah terisolasi dari jaringan listrik PT.PLN (Persero) di Indonesia melalui aplikasi tar wet scrubber dan gas filter. Mesin gasifier yang dirancang berupa tipe downdraft dengan kapasitas terpasang 25 kW. Tambahan komponen rangkaian PLTBm yang dirancang adalah tar wet scrubber, gas filter dan gas engine. Secara keseluruhan mesin PLTBm yang dirancang terdiri dari : (1)Tangki pengisian biomassa, (2)Tangki biomassa, (3)Reaktor tipe downdraft, (4)Cyclon, (5)Tar wet schrubber, (6)Water tank, (7)Gas filter, (8)Blower, (9)Gas engine kapasitas 25 kW, (10)Air inlet nozzle, (11)Connection pipe, (12)Termometer indicator, (13)Exhaust gas, (14)Pressure indicator. Pengurangan nilai tar selain menggunakan karbon aktif, juga menggunakan sistem perangkap kotoran gas (wet scrubber). Gasifier yang digunakan pada penelitian ini memiliki diameter reaktor 900 mm dan tinggi 1000 mm. Cyclon memiliki diameter 580 mm dengan tinggi 1766 mm. Gas filter memiliki panjang 700 mm, tinggi 700 mm dan lebar 700 mm. Tar wet scrubber terdiri dari 5 tabung (diameter tabung 300 mm) yang terangkai satu dengan yang lainnya dengan tujuan untuk menangkap tar yang masih terkandung dalam gas mampu bakar yang dihasilkan dari reaktor gasifikasi dengan dimensi total yaitu lebar 1750 mm dan tinggi 1300 mm. Kata kunci : PLTBm, energi terbarukan, tar wet scrubber, biomassa, gas filter 
Microplastics in Landfill Environments: Distribution, Characteristics, and Risks from Gampong Jawa, Indonesia Silvia, Ika; Saiful, Saiful; Ichwana, Ichwana
Aceh International Journal of Science and Technology Vol 13, No 2 (2024): August 2024
Publisher : Graduate School of Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.13.2.42344

Abstract

Landfills are generally considered the ultimate solution for waste management. However, the degradation process of plastic waste in landfills causes the release of microplastic particles into the surrounding environment and threatens human health. The distribution and properties of microplastics in four environment matrices, soil, leachate, river water, and well water surrounding the landfill, are examined in this study. Sampling was conducted at the inflow and outflow areas of the leachate ponds., The soil at the top (05 cm) and bottom (520 cm), upstream and downstream surface water adjacent to the landfill, and community wells within a radius of fewer than 700 meters from the landfill. Microplastic analysis used a gradual extraction method with saturated NaCl for density separation, 30% hydrogen peroxide for organic matter degradation, and 0.05 M FeSO4 as a catalyst. Physical character identification of microplastics using a microscope showed microplastic contamination at all study sites. The results showed an abundance of microplastics was found in well water samples (808 to 979 items/L), leachate (209 to 757 items/L), surface water (6.29 to 7.2 items/L), and soil (23,340 to 23,420 items/kg). Types of microplastics found consist of fragments, fibers, films, pellets, foam, and rods. The size of microplastics found ranged from 1.897 m to 1,642.79 m. Fourier Transform Infrared spectroscopy examination identified polyethylene terephthalate (PET) plastic compounds in soil and leachate materials. The high concentration of microplastics in well water indicates potential groundwater contamination from landfill activities that may impact the surrounding community. This study provides preliminary insights into how landfills may contribute to environmental microplastic contamination. It paves the way for further research to develop mitigation strategies.
Developing Merdeka Belajar Kampus Merdeka (MBKM) Course Package to Foster Entrepreneurship Among Pre-Service Chemistry Teachers Sulastri, Sulastri; Nazar, Muhammad; Ichwana, Ichwana
Tekno - Pedagogi : Jurnal Teknologi Pendidikan Vol. 14 No. 2 (2024): Tekno-Pedagogi
Publisher : Program Magister Teknologi Pendidikan Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/teknopedagogi.v14i2.38022

Abstract

This research aims to develop a Independent Campus Learning Program -Merdeka Belajar Kampus Merdeka (MBKM) course package designed to foster the entrepreneurial spirit among pre-service chemistry teachers in the Chemistry Education Study Program at FKIP Universitas Syiah Kuala. Utilizing the ADDIE model (Analysis, Design, Development, Implementation, Evaluation), the study conducts a comprehensive needs analysis, designs a curriculum prototype, validates and tests the course package, and evaluates its effectiveness. The results indicate that the developed course package successfully integrates chemistry knowledge with entrepreneurial skills, providing students with practical experience in applying chemistry to develop innovative products based on local resources. Program evaluation also reveals a significant increase in students' insights, entrepreneurial skills, and soft skills, along with a heightened interest in entrepreneurship. This research contributes to the development of a more relevant and applicable curriculum in preparing prospective chemistry teachers with entrepreneurial competencies, aligned with the objectives of the MBKM program
Co-Authors B.Tou, Saminuddin Kiman Siregar, Kiman Muhammad Nazar Rizal Alamsyah, Rizal Saiful Saiful Sholihati Sholihati, Sholihati Silvia, Ika Sulastri Sulastri