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All Journal KOVALEN: Jurnal Riset Kimia Jurnal Hibrul Ulama
Putri, Sabrina Aisyah
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Religion Chemical Engineering, Chemistry & Bioengineering Chemistry

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MENINGKATKAN MINAT BELAJAR SISWA KELAS X SMK PRATAMA MULYA DENGAN METODE TWO STAY TWO STRAY PADA PEMBELAJARAN PENDIDIKAN AGAMA ISLAM Putri, Sabrina Aisyah; Maemunah, Siti; Nurhasanah, Siti; Farida, Nur Aini; Makbul, M.
HIBRUL ULAMA Vol. 6 No. 1 (2024): Jurnal Hibrul’ulama
Publisher : Fakultas Agama Islam Universitas Al Washliyah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47662/hibrululama.v6i1.690

Abstract

The lack of use of learning models causes a decrease in student interest and motivation in learning PAI subjects for class X students at SMK Pratama Mulya. Therefore, innovation in the use of effective learning models is needed. In this research, researchers tried to use the Two Stay Two Stray method to increase interest in learning in class. The Two Stay Two Stray method is a learning model where students learn to solve problems together with group members and two students from that group pass on information to other group members. This type of research is classroom action research and consists of two cycles. Cycle I is about Mahmudah material with subtitles (understanding, division of morals, propositions, and the nature of ghadab) the results obtained by students have not yet achieved learning completeness, so it is necessary to carry out syllabus II actions regarding Madzmumah material with the subtitle (implementation, examples, and lessons learned in self-control behavior) the results obtained by students are already achieve learning completeness, because students have understood the two stay two stray method.
Pemanfaatan Limbah Puntung Rokok sebagai Inhibitor Korosi pada Baja St40 Menggunakan Metode Microwave Assisted Extraction (MAE) di Lingkungan NaCl 3,56%: Utilization of Cigarette Butts Waste as Corrosion Inhibitor on St40 Steel Using Microwave Assisted Extraction (MAE) Method in 3.56% NaCl Environment Alatif, Ikhsan Akmal; Permatasari, Rahma Puspa; Nurulgina, Rahma; Adzkia, Zahrotul Filza; Andayani, Puri; Putri, Sabrina Aisyah; Adinda; Trirahayu, Dhyna Analyes; Hadiningrum, Kunlestiowati
KOVALEN: Jurnal Riset Kimia Vol. 10 No. 3 (2024): December Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2024.v10.i3.17394

Abstract

Corrosion is a problem that occurs in many industries and causes large losses. The use of corrosion inhibitors is one way to reduce or inhibit corrosion. Cigarette butt waste extract can be utilized as an organic corrosion inhibitor. This study aims to determine the yield of cigarette butt waste extract, the content of cigarette butt waste extract produced using the MAE method qualitatively, determine the optimum conditions for the extraction process with the MAE method based on variations in microwave power of 150 and 300 watts and calculate the efficiency of corrosion inhibitors and the effect of compounds contained in cigarette butt waste extract in 3.56% NaCl environment. The optimum MAE condition was 150 watts and 15 minutes, with an extract yield of 54.38%. Based on the GC-MS test, it is known that cigarette butts waste extract contains alkaloid, terpenoid, and phenol compounds as corrosion inhibitor compounds. Based on corrosion inhibitor testing, the addition of cigarette butt waste extract corrosion inhibitors can suppress or reduce the corrosion rate that occurs on metals with an inhibitor efficiency of 79.19% in non-aerated conditions and 71.53% in aeration with an inhibitor concentration of 1000 ppm in a 3.56% NaCl environment.
Co-Authors Adinda Adzkia, Zahrotul Filza Alatif, Ikhsan Akmal Andayani, Puri Farida, Nur Aini Hadiningrum, Kunlestiowati M. Makbul Nurulgina, Rahma Permatasari, Rahma Puspa RR. Ella Evrita Hestiandari Siti Nurhasanah Trirahayu, Dhyna Analyes