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All Journal JPS Unimus Dinamisia: Jurnal Pengabdian Kepada Masyarakat Jurnal Redox Unistek: Jurnal Pendidikan dan Aplikasi Industri JIMTEK
Ismi Nurlatifah
Universitas Islam Syekh Yusuf
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Electrical & Electronics Engineering Environmental Science Industrial & Manufacturing Engineering Physics Social Sciences Other

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Pemanfaatan Limbah Kulit Talas Bogor (Colocasia Esculenta) Sebagai Sumber Energi Alternatif Bioetanol Arlianti, Lily; Nurlatifah, Ismi
UNISTEK Vol 6 No 2 (2019): Agustus 2019 - Januari 2020
Publisher : UNIVERSITAS ISLAM SYEKH - YUSUF TANGERANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (697.959 KB) | DOI: 10.33592/unistek.v6i2.261

Abstract

Abstrak. Penanggulangan limbah organik baik limbah domestik maupun limbah industri menjadi suatu hal yang sangat penting untuk dikembangkan karena jumlah limbah atau sampah organik  sejalan dengan pertumbuhan jumlah penduduk di Indonesia. Salah satu limbah organik yang banyak dihasilkan dari produksi makanan adalah kulit talas Bogor. Limbah kulit talas ini kami konversi menjadi bioetanol dengan metode fermentasi menggunakan ragi tape yang mengandung saccharomyces cereviceae dengan variasi lama fermentasi 4,6,8,10 dan 12 hari. Hasil fermentasi kemudian dipisahkan dengan metode destilasi dan didapatkan berat jenis destilat 0,8483 gr/mL. Dari penelitian ini didapatkan destilat bioetanol sebanyak 79 mL dengan yield 14,68%. Dengan demikian limbah kulit talas memiliki potensi untuk konversi biomassa menjadi bioetanol yang merupakan salah satu bahan bakar alternative yang ramah lingkungan. Kata kunci: limbah kulit talas Bogor, fermentasi, bioetanol Abstract.[ Utilization of Bogor Taro Skin Waste (Colocasia Esculenta) As an Alternative Energy Source of Bioethanols] The handling of organic waste both domestic waste and industrial waste is a very important thing to be developed because the amount of waste or organic waste is in line with the growth of the population in Indonesia. One of the many organic wastes produced from food production is Bogor taro skin. We convert taro skin waste into bioethanol by fermentation method using yeast tape containing saccharomyces cereviceae with long fermentation variations 4,6,8,10 and 12 days. The results of fermentation were then separated by a distillation method and obtained by the specific gravity of distillate 0.8483 gr / mL. From this study, 79 mL bioethanol distillate was obtained with a yield of 14.68%. Thus taro skin waste has the potential to convert biomass into bioethanol which is one of the alternative fuels that is environmentally friendly. Keywords: Bogor taro skin waste, fermentation, bioethanol
Artikel Review: Produksi Gas Hidrogen dari Reaksi Elektrolisis Sebagai Bahan Bakar Non-Fosil Nurlatifah, Ismi; Arlianti, Lily
UNISTEK Vol 8 No 1 (2021): Februari - Juli 2021
Publisher : UNIVERSITAS ISLAM SYEKH - YUSUF TANGERANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33592/unistek.v8i1.1206

Abstract

In carrying out various activities today, it cannot be separated from the fuel. As we all know, fuels that are still commonly used today are fossil fuels whose energy resources are running low. Not only that, fossil fuels have also been shown to produce air pollution. Unhealthy air conditions can certainly reduce human life expectancy. In order to make the clean environment and not polluted by the air pollution, there must be environmentally friendly fuels. The answer for this kind of fuels is hydrogen which comes from nonfossil. One way to obtain hydrogen is an electrolysis reaction. Water can produce hydrogen through electrolysis. Just a few liters of water, it can produce ten to twenty thousand liters of hydrogen gas per hour. The use of Hydrogen as a non-fossil fuel has been proven to be environmentally friendly and free of carbon monoxide. Healthy air and a clean environment are certainly our responsibility. It's time to switch by using hydrogen fuel.
Esterifikasi Gliserol Produk Samping Biodiesel Menjadi Triasetin Menggunakan Katalis SO42-/TiO2 Tena Rizki Agusti; Dine Agustine; Ismi Nurlatifah
JURNAL ILMIAH FAKULTAS TEKNIK Vol 1 No 3 (2020): November 2020 - Februari 2021
Publisher : Universitas Islam Syekh Yusuf Tangerang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (679.844 KB)

Abstract

Latar Belakang: Gliserol adalah produk samping biodiesel yang dihasilkan 10% dari pembuatan biodiesel. Gliserol dapat diproses menjadi produk yang lebih ekonomis seperti triasetin. Triasetin digunakan sebagai bahan aditif biodiesel, kosmetik, dan makanan. Tujuan: Penelitian ini dilakukan untuk mengetahui potensi katalis SO42-/TiO2 sebagai katalis asam dan pengaruh variasi konsentrasi katalis SO42-/TiO2 pada proses esterifikasi gliserol. Metode: Aktivasi katalis SO42-/TiO2 dilakukan dengan metode impregnasi dan kalsinasi. Gliserol didapatkan dari proses transesterifikasi biodiesel. Triasetin diperoleh dari reaksi esterifikasi gliserol dimana gliserol direaksikan dengan asam asetat dengan perbandingan rasio mol gliserol dan asam asetat 1:7. Variasi konsentrasi katalis SO42-/TiO2 yang digunakan yaitu 2%, 4%, 6% dan waktu reaksi esterifikasi selama 4 jam pada suhu 100°C. Hasil Penelitian: . Konversi gliserol tertinggi diperoleh pada konsentrasi katalis 4% sebanyak 76,22%. Kesimpulan: Katalis SO42-/TiO2 berpotensi menjadi katalis asam untuk digunakan pada reaksi esterifikasi gliserol menjadi triasetin.
PENINGKATAN EFIKASI DIRI SISWA MELALUI MODEL PEMBELAJARAN KOOPERATIF TIPE STAD PADA TOPIK KELARUTAN DAN HASIL KALI KELARUTAN Ismi Nurlatifah
Jurnal Redox Vol 6 No 02 (2018): Jurnal Redox
Publisher : Program Studi Pendidikan Kimia, FKIP, Universitas Muhammadiyah Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32534/jre.v6i02.617

Abstract

Tujuan dari penelitian ini adalah untuk mengidentifikasi perbedaan peningkatan efikasi diri antara kelas eksperimen yang menerapkan model pembelajaran kooperatif tipe STAD dengan kelas kontrol yang menerapkan model pembelajaran kooperatif konvensional. Metode penelitian yang digunakan adalah quasi experiment dengan desain penelitian nonequivalent control group design yang melibatkan dua kelas penelitian yaitu kelas eksperimen dan kelas kontrol. Kuesioner yang diadaptasi dari College Chemistry Self-Efficacy Scale (CCSS) digunakan sebagai instrumen penelitian. Hasil penelitian menunjukkan terdapat perbedaan peningkatan efikasi diri yang signifikan (p<0,05) antara kelas eksperimen (<g> = 0,55) dengan kelas kontrol (<g> = 0,35). Disarankan bahwa model pembelajaran kooperatif tipe STAD dapat diterapkan dalam berbagai proses pembelajaran karena melalui model pembelajaran tersebut dapat meningkatkan efikasi diri. Pengembangan efikasi diri sama pentingnya dengan pengembangan penguasaan konsep.
Pelatihan Pembuatan Sabun dari Minyak Jelantah sebagai Upaya Pemanfaatan Limbah Rumah Tangga Ismi Nurlatifah; Dine Agustine; Dadang Sujana
Dinamisia : Jurnal Pengabdian Kepada Masyarakat Vol. 6 No. 2 (2022): Dinamisia: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/dinamisia.v6i2.9220

Abstract

During the pandemic, we are getting more demanded to maintain cleanliness and wash our hands frequently. The purpose of this community service activities is to educate the public in processing cooking oil waste into a useful product, that is soap. This activity is carried out as an effort to support the government program namely 5 M, which is one of the activity from this program is washing hands with soap. This activity was carried out in Tegal Kunir Kidul Village, Mauk Sub-District, Tangerang District. The methods that we used are workshops and direct mentoring. The participants who attended the workshop were 30 persons, consisting of program at village level womens and youth organizations. The results obtained from this workshop are the increasing of resident’s insight in terms of processing waste, as well as increasing skills in making soap products from cooking oil waste. In the future, it will not only come to waste processing, but also making the opportunities to increase businesses that can be manage by local villages.
Students' Knowledge of Solubility Topics through The Cooperative Learning STAD Type Ismi Nurlatifah; Wawan Wahyu; Wahyu Sopandi
JURNAL PENDIDIKAN SAINS UNIVERSITAS MUHAMMADIYAH SEMARANG Vol 10, No 2 (2022): JURNAL PENDIDIKAN SAINS UNIVERSITAS MUHAMMADIYAH SEMARANG
Publisher : Pendidikan Kimia Unimus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/jps.10.2.2022.63-71

Abstract

The topic of solubility is included in the chemistry subject matter that is considered difficult by students. This study aims to identify differences in knowledge improvement between the experimental class using the cooperative learning model STAD (Student Teams Achievement Divisions) type and the control class using the conventional learning model. The research method and design used is a quasi-experimental with nonequivalent control group design. The participants that involved in this study were students of class XI MIPA with 33 students for the experimental class and 32 students for the control class. A written test that has been validated is used as an instrument in this study. From the student scores that obtained, the N-Gain score is calculated, and hypothesis testing is done through SPSS. The results showed that there was a significant difference in increasing knowledge (p<0.05) between the experimental class (<g>=0.71) and the control class (<g>=0.54). The cooperative learning model STAD type is suitable to be applied for solubility topic learning. It can also be used for the others topic.
Co-Authors Agustine, Dine Arlianti, Lily Nurlatifah, Ismi Sujana, Dadang Tena Rizki Agusti Wahyu Sopandi Wawan Wahyu