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Reducing Salt Levels in Sea Water Using Active Carbon Adsorbent from Coconut Shell Charcoal, Silica Sand, and Palm Fiber Ade Prisma Sitepu; Awy Silaban; Hanifa Azzahra; Raudatul Fadilla; Ummi Kalsum; Moondra Zubir; Lisnwaty Simatupang
Indonesian Journal of Chemical Science and Technology (IJCST) Vol. 8 No. 1 (2025): JANUARY 2025
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v8i1.68678

Abstract

This study aims to evaluate the effectiveness of various combination of adsorbents in reducing salt content in seawater through the adsorption method. Four variations in the ratio of adsorbent materials, namely activated charcoal, silica sand and palm fiber, were tested with different amounts. activated charcoal, silica sand, and palm fiber, were tested with different amounts. Results showed that the 1:2 ratio (800 grams of activated charcoal and 400 grams of silica sand) resulted in a decrease in salt content from 20% to 3%, which was the highest reduction compared to the other comparison. In addition, the pH test showed that the pH value of the water after the adsorption process remained in the neutral range, namely 7 to 7.5, which indicating that the filtration process successfully improved the water quality. This study indicates that the use of local materials such as activated charcoal and silica sand can be an effective and environmentally friendly solution to reduce the effective and environmentally friendly solution to reduce seawater salinity, as well as increase public awareness of the importance of clean water. public awareness of the importance of clean water. These results are expected to contribute to the development of a more affordable and sustainable desalination technology. technology that is more affordable and sustainable.
STUDY LITERATURE ANALISIS PENGARUH PENGGUNAAN MEDIA PHET SIMULATIONS TERHADAP HASIL BELAJAR SISWA PADA MATERI GELOMBANG Anggi Putri Simamora; Mardiana; Nadia Priska; Raudatul Fadilla; Ummi Kalsum; Maykhel Yustinus Hutapea; Retno Dwi Suyanti; Sri Masnita Pardosi
Jurnal Media Akademik (JMA) Vol. 3 No. 12 (2025): JURNAL MEDIA AKADEMIK Edisi Desember
Publisher : PT. Media Akademik Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62281/aem1x077

Abstract

Penelitian ini dilakukan dengan tujuan menganalisis pengaruh penggunaan media simulasi interaktif PhET (Physics Education Technology) terhadap peningkatan hasil belajar IPA pada materi Gelombang siswa kelas VIII SMP. Latar belakang utama penelitian ini didasarkan pada tantangan yang dihadapi dalam pembelajaran IPA, di mana konsep-konsep yang bersifat abstrak seperti Gelombang, sering menjadi hambatan utama yang menyebabkan rendahnya hasil belajar kognitif siswa. Untuk mencapai tujuan tersebut, penelitian ini menggunakan metode Kajian Pustaka Sistematis (Systematic Literature Review), di mana berbagai temuan dari penelitian-penelitian eksperimen dan literatur terdahulu yang relevan mengenai penggunaan PhET pada jenjang SMP dianalisis dan disintesis secara mendalam. Hasil sintesis literatur secara konsisten menunjukkan bahwa penerapan media simulasi PhET memberikan kontribusi positif dan signifikan terhadap peningkatan hasil belajar IPA siswa SMP, dengan tingkat efektivitas yang optimal pada jenjang ini, bahkan memiliki nilai effect size yang lebih tinggi dibandingkan jenjang lainnya. Secara spesifik, media PhET terbukti efektif dalam memfasilitasi visualisasi konsep abstrak seperti gelombang berjalan dan gelombang stasioner, serta meningkatkan keterampilan proses sains dan pemahaman konseptual pada materi Getaran dan Gelombang. Disimpulkan bahwa media simulasi PhET memiliki pengaruh positif yang kuat dalam meningkatkan hasil belajar IPA materi Gelombang, dan direkomendasikan untuk diintegrasikan sebagai solusi inovatif dalam mengatasi kesulitan pembelajaran konsep abstrak.
Analisis Sikap Siswa terhadap Keberagaman Suku di Kelas VIII SMP Swasta Utama Medan Anggi Putri Simamora; Desi Mertina Br Sembiring; Dewi Pratiwi; Mutia Haryani Siregar; Putri Delvia; Raudatul Fadilla; Sania Siregar; Ika Purnamasari
RISOMA : Jurnal Riset Sosial Humaniora dan Pendidikan Vol. 2 No. 6 (2024): November: RISOMA : Jurnal Riset Sosial Humaniora dan Pendidikan
Publisher : Asosiasi Ilmuwan Pendidikan, Sosial, dan Humaniora Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/risoma.v2i6.406

Abstract

At the junior high school level (SMP), students begin to recognize the importance of values ​​of togetherness in diversity. However, this understanding does not always run smoothly because of cultural and background differences that can affect the way students interact with each other. This study uses a descriptive approach. The purpose of this study is to analyze students' attitudes towards ethnic diversity in class VIII of a private junior high school. Data collected through questionnaires will be analyzed to obtain an overview of students' attitudes towards diversity related to the topic and objectives of the research applied. The results of the study showed that there were no significant differences in attitudes between students with different ethnic backgrounds. This means that positive attitudes towards ethnic diversity are evenly distributed among various ethnic backgrounds, indicating that ethnic factors are not a barrier to social interaction in the classroom, where most students have similar views on the importance of respecting differences and working together with friends from different ethnic groups.