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-, Al-Gazali
Universitas Bosowa
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UJI KANDUNGAN ENERGI GAS HIDROGEN MELALUI PROSES ELEKTROLISIS AIR SEBAGAI ENERGI ALTERNATIF -, M.Tang; -, Al-Gazali
Jurnal Ilmiah Ecosystem Vol. 18 No. 3 (2018): ECOSYSTEM September - December 2018
Publisher : Lembaga Penelitian dan Pengabdian pada Masyarakat Universitas Bosowa

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Abstract

Sumber energi merupakan komponen utama masyarakat saat ini adalah gas dan bahan bakar dari bahan fosil yang merupakan bahan bakar yang tak dapat diperbaharui (nonrenewable). Dan cadangannya semakin hari semakin berkurang, termasuk di Indonesia. Disisi lain penduduk semakin bertambah yang tentunya berbanding lurus dengan kebutuhan energi. Oleh sebab itu, usaha untuk mencari bahan bakar alternatif yang dapat diperbarui (renewable), ekonomis dan ramah terhadap lingkungan semakin dibutuhkan. Gas hidrogen bisa menjadi bahan bakar alternatif untuk mengatasi permasalahan yang berkaitan dengan minyak bumi. Variable yang akan diamati rasio optimal antara volume air dengan katalis soda api (NaOH) 7,27 %, 5 % dan 3,81 %, penentuan variasi tegangan (6 V, 12 V, 24 V) dan waktu (1 menit, 2 menit, 3 menit, 4 menit dan 5 menit ). Dari hasil penelitian ini di peroleh bahwa volume gas hidrogen mengalami kenaikan pada saat konsentrasi NaOH 7,27 % dan waktu 5 menit sebesar 0,373 liter atau 373 mL. Sedangkan volume gas hidrogen mengalami penurunan pada saat konsentrasi 3,81 % dan waktu 5 menit sebesar 0,23 liter atau 230 mL. Berdasarkan hukum Faraday bahwa makin besar konsentrasi larutan makin banyak gas hidrogen dihasilkan seiring lamanya proses elektrolisis air. Besarnya Tegangan akan mempercepat munculnya gelembung-gelembung pada permukaan elektroda. Penelitian ini diharapkan dapat menambah wawasan dan pengetahuan bagi mahasiswa/SMA dan masyarakat umum
PENINGKATAN PENGETAHUAN, SIKAP DAN PERILAKU SISWA SMPMQ KHAIRU UMMAH TENTANG PENGELOLAAN SAMPAH MELALUI PEMBELAJARAN BERBASIS PROYEK PEMBUATAN ECO ENZYME Andi Zulfikar Syaiful; Hermawati Hermawati; Al-Gazali Al-Gazali
UNM Environmental Journals Vol 5, No 2 (2022): April
Publisher : Pascasarjana Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/uej.v5i2.42873

Abstract

on students' knowledge, attitudes and behavior in managing waste. This study uses a single case study design at Sekolah Menengah Pertama Menghafal Qur'an (SMPMQ) Khairu Ummah. The data were obtained through interviews, observations, and unofficial documents such as preparation steps for the learning process, learning modules, documentation, and activity reports which were used to explore the experience and skills of waste management acquired by students during project implementation. The significance of the increase in students' knowledge, attitudes, and behavior in managing waste is measured using a questionnaire. The findings show that students understand the negative impact of improper waste management. The observation results show good teacher preparation in the management of project-based learning. The results of the study also showed an increase in students' skills in 1) classifying waste materials that are easily decomposed and suitable for making eco enzymes, 2) determining the right conditions for fermentation to take place, 3) determining the quality of a fermented product through organoleptic observations. Through project-based learning activities for making eco enzymes, students can learn about the concept of reusing waste materials for the production of new materials such as eco enzymes. There was a very significant increase in the scores of students' knowledge, attitudes, and behavior in managing waste after learning based on the eco enzyme production project. Valuable experience through student project activities to manage waste into useful products is expected to help sustain their lifelong learning process so that it can contribute greatly to creating environmental balance.
Co-Authors -, M.Tang Andi Zulfikar Syaiful Hermawati Hermawati