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Dhea Novita
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Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Engineering Environmental Science Social Sciences

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Pemanfaatan Fly Ash sebagai Adsorben dalam Pemurnian Crude Glycerol dari Hasil Produk Samping Biodiesel Riza Alviany; Dhea Novita; Rizky Anggara Pratama; Fadhil Muhammad Tarmidzi
Jurnal Serambi Engineering Vol 8, No 2 (2023): April 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i2.5981

Abstract

The increase of biodiesel production capacity is followed by an increase in crude glycerol production as a by-product. Crude glycerol still has a low purity and a lot of impurities so it requires special treatment so that it can be utilized and valuable. One of the ways to increase the purity of crude glycerol is in the adsorption process. This study aims to determine the best conditions for the adsorption process and the characteristics of the glycerol produced after the adsorption process. The initial condition of crude glycerol purity is low, namely 67.8%, so purification is needed. One way of purifying crude glycerol is by physically separating it using fly ash as an adsorbent. The experiment was carried out with the adsorption process using fly ash with the adsorbent mass variable 30,35,40,45, and 50 grams and the adsorption time variable was 50,60, and 70 minutes. The purified products are analyzed quantitatively and qualitatively, including glycerol content, density, viscosity, moisture content, ash, and MONG. The best conditions for the adsorption process using fly ash were obtained at a mass of 50 grams with a time of 50 minutes with the results that the glycerol content was 97.5%, water content 0.03%, ash content 0.0432%, MONG content 2.426%, density 1.253 gr / ml , viscosity 233.56 cP. Based on these results, purified glycerol was obtained that met the quality standards of SNI 06-1564-1995.
Pemanfaatan Fly Ash sebagai Adsorben dalam Pemurnian Crude Glycerol dari Hasil Produk Samping Biodiesel Riza Alviany; Dhea Novita; Rizky Anggara Pratama; Fadhil Muhammad Tarmidzi
Jurnal Serambi Engineering Vol 8, No 2 (2023): April 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i2.5981

Abstract

The increase of biodiesel production capacity is followed by an increase in crude glycerol production as a by-product. Crude glycerol still has a low purity and a lot of impurities so it requires special treatment so that it can be utilized and valuable. One of the ways to increase the purity of crude glycerol is in the adsorption process. This study aims to determine the best conditions for the adsorption process and the characteristics of the glycerol produced after the adsorption process. The initial condition of crude glycerol purity is low, namely 67.8%, so purification is needed. One way of purifying crude glycerol is by physically separating it using fly ash as an adsorbent. The experiment was carried out with the adsorption process using fly ash with the adsorbent mass variable 30,35,40,45, and 50 grams and the adsorption time variable was 50,60, and 70 minutes. The purified products are analyzed quantitatively and qualitatively, including glycerol content, density, viscosity, moisture content, ash, and MONG. The best conditions for the adsorption process using fly ash were obtained at a mass of 50 grams with a time of 50 minutes with the results that the glycerol content was 97.5%, water content 0.03%, ash content 0.0432%, MONG content 2.426%, density 1.253 gr / ml , viscosity 233.56 cP. Based on these results, purified glycerol was obtained that met the quality standards of SNI 06-1564-1995.
Pengaruh Intervensi Susu Kedelai terhadap Gejala Menopause dan Kualitas Hidup pada Wanita Menopause Dhea Novita; Rr. Sri Endang Pujiastuti
J-CEKI : Jurnal Cendekia Ilmiah Vol. 5 No. 2: Februari 2026
Publisher : CV. ULIL ALBAB CORP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56799/jceki.v5i2.15577

Abstract

Latar Belakang: Penurunan produksi estrogen selama masa menopause berdampak pada kualitas hidup dengan memicu berbagai gejala menopause serta meningkatkan risiko penyakit kardiovaskular. Setelah transisi menopause, ketika kadar estrogen dalam tubuh perempuan menurun, risiko penyakit kardiovaskular meningkat secara signifikan. Pada usia lanjut, perempuan memiliki risiko kejadian kardiovaskular yang setara atau bahkan sedikit lebih tinggi dibandingkan laki-laki. Konsumsi kedelai berpotensi menurunkan gejala dan keluhan menopause karena kandungan fitoestrogennya. Fitoestrogen memiliki struktur dan fungsi yang menyerupai estrogen, sehingga berpotensi menjadi alternatif terapi pengganti hormon dalam mengurangi gejala pramenopause, seperti hot flashes, yang disebabkan oleh penurunan kadar estrogen dalam tubuh. Tujuan: Penelitian ini bertujuan untuk mengetahui secara spesifik pengaruh konsumsi susu kedelai terhadap gejala menopause dan kualitas hidup pada perempuan menopause. Metode: Penelitian ini merupakan penelitian kuasi-eksperimen dengan desain one-group pretest–posttest. Hasil: Hasil penelitian menunjukkan bahwa konsumsi susu kedelai berpengaruh signifikan dalam menurunkan gejala menopause dengan nilai p = 0,001 (p < 0,05). Selain itu, kualitas hidup perempuan menopause juga mengalami peningkatan yang signifikan setelah intervensi susu kedelai dengan nilai p = 0,001 (p < 0,05). Kesimpulan: Intervensi susu kedelai berpengaruh terhadap penurunan gejala menopause serta peningkatan kualitas hidup pada perempuan menopause.
Co-Authors Fadhil Muhammad Tarmidzi Riza Alviany Rizky Anggara Pratama Rr. Sri Endang Pujiastuti