<p>Bone is one of the wastes result in environmental pollution and public health issues if it is thrown directly into the environment. The aim of this research was to study the characteristics of activated charcoal of activated sulfuric acid goat bone. The process of making activated charcoal of goat bone included two stages of process, herein consisted of first carbonization process of goat bone at temperature of 700 C for 20 minutes to produce goat bone charcoal. The second process is chemical activation by using sulfuric acid activator at various concentrations of 1N, 2N and 3N for<br />24 hours. The results showed that the best activated charcoal characteristic of sulfuric acid was at 3N sulfuric acid concentration, 0.289% moisture content, ash content of 6.4%, absorption capacity of Iod 983 mg / g, volatile matter 15,017, fixed carbon 82.013 and spectra FTIR of activated carbon showed spectra of absorption band at wave number 3546,143 – 3604,135 cm-1 on vibration of group -OH, with intensity 76%. Overall, the results revealed that the quality of activated charcoal of goat bone is<br />still eligible of the values recommended by SNI-06-4253-1996 about the quality of activated charcoal.</p>
This study aims to study the efficiency of CO and SO2 gas absorption in motor vehicles emission using activated banana leather bark (Musa acuminate L). The carbon was prepared though consists of a banana skin carbonation process at a temperature at 450 o C for 1.5 hours and activated carbon activation process using H2 SO4 activator at concentrations of 1 Nfor 1, 2 and 3 hours.The motor vehicle emission absorption process uses an adsorption tube which has been loaded activated carbon and connected to the exhaust for 5 minutes. The test of activated carbon characteristics studied were absorption test I2, FTIR test and SEM test. The results showed that iodine absorption was 914 mg / g. The FTIR spectra of activated carbon showed absorption band spectra at wave number 781,17 - 3624,25 cm-1 on vibration of group -OH, with intensity 77,85%. The SEM results show the addition of pore size before and after activation of 1.131 μm and 15.015 μm. The carbon CO gas absorption efficiency is 25% and Gas SO2 is 40%
<p>One way to prevent the saturation of learning mathematics and other science concepts for students in the high school environment is to have the teacher's creativity in the learning method. The creativity of the teacher in managing the class and fostering students' interest in learning is very dependent on how the teacher uses learning tools, including in the digital age there are many learning methods by utilizing interactive software that can hone students' knowledge and train students' skills in experimenting. Especially in subjects, mathematics, physics and chemistry. Therefore this service activity aims to train teachers to use PhET Simulation-based interactive software to support mathematics, physics and chemistry learning for teachers at Banda Aceh State 3 Islamic Senior High School. With the stages of training, namely the introduction of Phet Simulation for teachers and students followed by training in its use in the fields of mathematics, physics and chemistry, last followed by demonstrations conducted by teachers for each field of study. Based on the results of the evaluation of the training activities, the results of the survey were carried out in 5 categories of statements that stated that 73 trainees strongly agreed with this training and as many as 32 trainees agreed with this activity. While not agreeing and strongly disagree with this training there is none. It is expected that this training can provide information for teachers and students in the use of learning using PhET Simulation in using media to learn mathematics and other scientific concepts. <br />Keywords: Workshop, Phet Simulation, Teacher, MAN 3 Banda Aceh</p><p>Abstrak</p><p>Salah satu cara mensiasati kejenuhan belajar matematika dan konsep sains lainnya bagi siswa dilingkungan sekolah menengah atas adalah dengan memiliki kreativitas guru dalam metode pembelajaran. Kreatifitas guru dalam mengelola kelas dan menumbuhkan minat belajar siswa sangat bergantung dari bagaimana guru menggunakan alat-alat belajar, tidak terkecuali dizaman digital ini banyak sekali metode pembelajaran dengan memanfaatkan software-software interaktif yang bisa mengasah pengetahuan siswa dan melatih ketrampilan siswa dalam bereksperimen. Khususnya dalam mata pelajaran, matematika, fisika dan kimia. Oleh karena itu kegiatan pengabdian ini bertujuan untuk melatih guru menggunakan software interaktif berbasis PhET Simulation dalam menunjang pembelajaran matematika, fisika dan kimia untuk guru di Madrasah Aliyah Negeri 3 Banda Aceh. Dengan tahapan-tahapan pelatihan yaitu pengenalan PhET Simulation bagi guru dan siswa dilanjutkan dengan latihan penggunaannya dalam bidang matematika, fisika dan kimia terakhir dilanjutkan dengan demontrasi yang dilakukan oleh para guru untuk setiap bidang studi. Berdasarkan hasil evaluasi kegiatan pelatihan diperoleh hasil survei pelaksanaan kegiatan dalam 5 katagori pernyataan bahwa sebesar 73 peserta pelatihan sangat setuju dengan pelatihan ini dan sebanyak 32 peserta pelatihan setuju dengan kegiatan ini. Sementara tidak setuju dan sangat tidak setuju dengan pelatihan ini tidak ada. Diharapkan Pelatihan ini dapat memberikan informasi bagi guru dan siswa dalam dalam pemanfaatan belajar menggunakan PhET Simulation dalam menggunakan media belajar matematika dan konsep sains lainnya.<br />Kata kunci: Pelatihan, Phet Simulation, Guru, MAN 3 Banda Aceh</p>
Livestock waste, such as bone, has always been ineffectively exploited. Bones contain organic compounds that can be further processed into usable products such as charcoal and activated charcoal. This research, therefore, aims to identify the optimum temperature conditions suitable for the manufacturing process of activated charcoal from goat bone waste using thermal activation. The study uses a two-stage process which is carbonization and thermal activation. Activation temperatures used in the process were at a temperature of 500 °C, 600 °C and 700 °C for three hours. The results of the characteristics of activated charcoal thermally produced in this research met the Indonesian National Standard 06-3730-1995 about technical activated charcoal, and the optimum conditions were at an activation temperature of 500 °C. These characteristics include the values of the water content at 1.210%, ash content at 2.034%, absorption of iodine 926 mg/g, volatile matter of 0.434% and fixed carbon of 96.616%.
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