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All Journal QUANTUM: Jurnal Inovasi Pendidikan Sains Jurnal Akademika Kimia
Magfirah Magfirah
Tadulako University
Chemistry Education Physics

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KONSEPSI PESERTA DIDIK MELALUI TES DIAGNOSTIK TWO TIER DALAM PEMBELAJARAN KIMIA Tri Santoso; Dewi Satria Ahmar; Afadil Afadil; Magfirah Magfirah; Sukmawati Sukmawati
QUANTUM: Jurnal Inovasi Pendidikan Sains Vol 14, No 2 (2023): Oktober 2023
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/quantum.v14i2.16060

Abstract

Penelitian ini bertujuan untuk menganalisis konsepsi peserta didik pada materi hidrokarbon. Penelitian ini merupakan penelitian deskriptif yang mendeskripsikan konsepsi peserta didik yang meliputi pemahaman konsep, miskonsepsi, dan tidak paham konsep. Populasi dalam penelitian ini berjumlah 112 siswa yang berasal dari 2 sekolah SMA yakni SMAN 1 Balaesang dan SMAN 2 Balaesang yang berlokasi di Kecamatan Balaesang Kabupaten Donggala, Provinsi Sulawesi Tengah. Pengambilan sampel menggunakan teknik sampling jenuh sehingga seluruh populasi menjadi sampel penelitian. Instrumen yang digunakan adalah tes diagnostik two tier dengan nilai validitas sebesar 0,88 dan nilai reliabilitas sebesar 0,77 dan wawancara. Hasil penelitian menunjukkan bahwa konsepsi peserta didik di SMAN 1 Balaesang untuk kategori paham konsep sebesar 64,4%, untuk kategori miskonsepsi sebesar 23,4%, dan untuk kategori tidak paham konsep sebesar 12,2%. Konsepsi peserta didik di SMAN 2 Balaesang untuk kategori paham konsep sebesar 59,9%, kategori miskonsepsi sebesar 26,1%, dan kategori tidak paham konsep sebesar 13,9%.
Utilizing Organic Waste to Create Charcoal Briquettes as a Substitute Fuel Aldi F. Uke; Sitti Rahmawati; Magfirah Magfirah; Afadil Afadil; Dewi Salmita; Vivi D. A. Sangkota
Jurnal Akademika Kimia Vol. 15 No. 2 (2026)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2026.v15.i2.pp97-103

Abstract

The generation of organic waste at SMA Negeri 1 Palu is substantial, and it is predominantly disposed of in landfills, leading to environmental concerns and the underutilization of potential resources. This study proposes converting organic waste into charcoal briquettes as a sustainable alternative for waste management and energy production. The objective of this research is to evaluate the composition and physicochemical properties of charcoal briquettes produced from organic waste generated at SMA Negeri 1 Palu. The briquettes were prepared from collected organic waste and characterized using standard fuel-quality parameters. The results showed that the produced briquettes exhibited a calorific value of 4385 cal.g-1, density ranging from 0.75 to 0.86 g.cm-3, and a combustion rate of 0.25 g.s-1. In addition, the moisture content, ash content, volatile matter, and fixed carbon were 7.5091%, 5.5894%, 16.1316%, and 78.279%, respectively. These findings indicate that organic waste-derived briquettes possess acceptable fuel characteristics and demonstrate potential as an alternative renewable energy source. This study highlights a practical approach to reducing organic waste while simultaneously generating value-added energy products, particularly in educational institutions.
Co-Authors Afadil Afadil Aldi F. Uke Dewi Salmita Dewi Satria Ahmar Sitti Rahmawati Sukmawati Sukmawati Tri Santoso Vivi D. A. Sangkota