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All Journal Abdimas UNWAHAS : Jurnal Pengabdian Masyarakat UNWAHAS Journal of Technomaterial Physics
Tulus Ikhsan Nasution
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Agriculture, Biological Sciences & Forestry Astronomy Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Medicine & Pharmacology Physics Social Sciences

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PENGEMBANGAN UNIT PENGELOLAAN LIMBAH SISTEM MANAJEMEN LIMBAH (SIMALIM) DENGAN SMART URBAN FARMING DALAM MENGELOLA LIMBAH ORGANIK DI KAMPUS USU M. Ichwan; Ameilia Zuliyanti Siregar; Eri Yusni; Tulus Ikhsan Nasution
ABDIMAS UNWAHAS Vol 6, No 2 (2021)
Publisher : Universitas Wahid Hasyim Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/abd.v6i2.5686

Abstract

Universitas Sumatera Utara memiliki civitas akademika yang berkontribusi menghasilkan limbah organik yang cukup signifikan. Mendukung Green Campus mencapai peringkat di UI Greenmetric,  perlu dikembangkan Unit Pengelolaan Limbah Sistem Manajemen (Simalim) Dengan Smart Urban Farming yang baik dan terpadu. UPL Simalim dibentuk bertujuan sebagai wahana pendidikan.  penelitian bagi masyarakat, mahasiswa dan dosen. Disamping itu, menghasilkan produk yang bermanfaat dengan mensinergikan pemanfaatan larva Hermetia illucens/Black Soldier Fly (BSF), ekoenzim, aquaponik dan smart urban farming dengan mengelola limbah organik dari kantin dan perumahan warga di sekitar USU. Pengabdian ini dilaksanakan sejak bulan Agustus 2020 sampai dengan Desember 2020 pada Tahap pertama, berlokasi di Tempat Pembuangan Sampah (TPS) USU di Jl. Tri Dharma dan roof top garden dari UPT Lab Terpadu USU, melibatkan secara partisipatif dan melatih para mahasiswa sebagai duta ecocampus dan juga tim UI Green metric USU. Pengelolaan sampah organik dilakukan dengan rearing BSF pada sampah yang akan diuraikan. Manakala sistem akuaponik, dibudidayakan ikan gabus, nila dan lele serta sayuran organik. Produk ini dapat dijadikan komoditas kampus yang merupakan income generating. Diharapkan UPL Simalim dapat menjadi model bagi pengelolaan sampah organik tepat guna di Perguruan Tinggi yang ada di Indonesia.Kata kunci: Limbah organik; larva BSF, ekoenzim, aquaponik, smart urban farming format. 
Enhancement of the Sensing Properties of Chitosan Films as an Acetone Gas Sensor with the Addition of Tin Oxide (SnO2) Tulus Ikhsan Nasution; Novia Syafriani Lubis
Journal of Technomaterial Physics Vol. 6 No. 2 (2024): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v6i2.7408

Abstract

In this study, the sensing properties of the chitosan film sensor were successfully improved by adding tin oxide (SnO2). The addition of SnO2concentration to the chitosan solution was 0.01%, 0.05%, 0.1%, and 0.5% (w/v). The sensor is fabricated as a film using the electrodeposition method. The sensing properties of chitosan and chitosan-SnO2 film sensors were exposed to acetone gas with concentrations of 0.5; 1; 1.5; 2; 2.5; and 3 ppm. The testing results show that chitosan film's response and repeatability properties produced the highest output voltage of 514 mV at 1.5 ppm, while the lowest output voltage value was 499.72 at 0.5 ppm. The addition of SnO2 with the highest concentration of 0.5% increased the response and repeatability properties in the form of the highest output voltage to 569.34 mV at 3 ppm, while the SnO2 concentration of 0.01% resulted in the lowest sensor output voltage of 504.84 mV at 0.5 ppm. The reproducibility of chitosan film became better due to the addition of SnO2, which resulted in a low STDEV value of 0.005 compared to that of chitosan film without the addition of SnO2, namely 0.156. The sensitivity of the chitosan film added by SnO2 increased, indicated by the increase in the slope value of 17.142 compared to the chitosan film without the addition of SnO2, which was 1.82. The SEM characterization showed that adding SnO2 increased the number of pores formed on the film, which strengthened the ability to absorb acetone. This is also evidenced by the FTIR results, which show the presence of SnO2 in the peak range of the wavenumbers from 677-717 cm-1. Therefore, the chitosan film sensor with the addition of SnO2 concentration showed better-sensing properties than chitosan film, which could be applied as an acetone gas sensor.
Co-Authors Ameilia Zuliyanti Siregar Eri Yusni M. Ichwan Novia Syafriani Lubis