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All Journal AGRITEPA: Jurnal Ilmu dan Teknologi Pertanian Al-Alam : Islamic Natural Science Education Journal
Meirita Sari
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Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management Education Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Optimalisasi Daya Koagulasi Serbuk Biji Kelor (Moringa Oleifera) Pada Limbah Cair Industri Tahu Meirita Sari
AGRITEPA: Jurnal Ilmu dan Teknologi Pertanian Vol 4 No 2 (2017)
Publisher : UNIVED Press, Universitas Dehasen Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (450.62 KB) | DOI: 10.37676/agritepa.v4i2.674

Abstract

Koagulasi-flokulasi merupakan salah satu solusi alternatif dalam menangani pencemaran lingkungan yang disebabkan oleh limbah cair industri tahu. Telah dilakukan penelitian tentang pemanfaatan serbuk biji kelor sebagai koagulan alami yang ramah lingkungan dengan varian kadar kelor dan waktu kontak pengadukan cepat. Penelitian ini bertujuan untuk mengetahui kadar serbuk biji kelor dan waktu kontak yang dapat memberikan hasil optimum dalam mengendapkan TSS limbah cair industri tahu. Dalam penelitian ini, tahapan yang dilakukan ialah preparasi sampel (limbah tahu), preparasi serbuk biji kelor, uji variasi kadar serbuk kelor dan waktu kontak terhadap pengendapan padatan tersuspensi (TSS). Hasil penelitian menunjukkan bahwa serbuk biji kelor pada kadar 0,5 % (b/v) dalam sampel limbah dan waktu kontak pada pengadukan cepat selama 7 menit dapat mengendapkan TSS pada kondisi optimum sebesar 3230 mg/L. Kata Kunci : Koagulasi, Biji Kelor (Moringa oleifera), Limbah Cair Industri Tahu, Padatan Tersuspensi (TSS).
p Pengaruh Penggunaan Media Scrapbook terhadap Pemahaman Konsep Sistem Sel pada Siswa MA Qur’an Harsallakum: Pengaruh Penggunaan Media Scrapbook terhadap Pemahaman Konsep Sistem Sel pada Siswa MA Qur’an Harsallakum Meirita Sari; Asih, Tri Lestari Budi; Yunilarosi, Elvida Sari; Destian, Destian; Aprillia, Eka Kurnia; Putri, Marta Marulina
Al-Alam: Islamic Science Education Journal Vol 5 No 1 (2026): (Edisi Januari) Inovasi Pembelajaran IPA
Publisher : LP2M UIN Ambon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33477/al-alam.v5i1.13640

Abstract

This study aimed to analyze the effect of using scrapbook media on students’ conceptual understanding of the cell system at MA Qur’an Harsallakum. The research employed a quantitative approach with a one-group pretest–posttest design. The participants consisted of 18 students from class X A. The instrument used was a multiple-choice test oriented toward conceptual understanding (C2–C4), which had been validated for content by three experts and tested for reliability using Cronbach’s Alpha. Data analysis included the Shapiro–Wilk normality test, paired t-test, effect size calculation using Cohen’s d, and normalized gain (N-gain). The results showed an increase in the mean score from 28.33 in the pretest to 29.44 in the posttest. The paired t-test yielded a p value < 0.05, indicating a significant difference before and after the use of scrapbook media. However, the N-gain value of 0.006 and Cohen’s d = 0.08 indicated that the improvement was classified as low with a small effect size. Scrapbook media supports concept visualization, but more optimal instructional time is required.
Co-Authors Aprillia, Eka Kurnia Asih, Tri Lestari Budi Destian, Destian Putri, Marta Marulina Yunilarosi, Elvida Sari