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All Journal Jurnal Riset dan Kajian Pendidikan Fisika JPS Unimus EduChemia: Jurnal Kimia dan Pendidikan PENA SAINS Phenomenon : Jurnal Pendidikan MIPA Edu Sains: Jurnal Pendidikan Sains dan Matematika Indonesian Journal of Science and Education Jurnal Penelitian Pendidikan IPA (JPPIPA) Al-Kimia Formatif: Jurnal Ilmiah Pendidikan MIPA Walisongo Journal of Chemistry Indonesian Journal of Biology Education JURNAL PENDIDIKAN MIPA Jurnal Inovasi Teknik Kimia Indonesian Journal of Natural Science Education ABDIPRAJA (Jurnal Pengabdian kepada Masyarakat) Sulawesi Tenggara Educational Journal J-ABDIPAMAS (Jurnal Pengabdian Kepada Masyarakat) Jurnal Pengabdian KOLABORATIF Indonesian Journal of Science and Education
Riva Ismawati
Universitas Tidar
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Environmental Science Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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Potential Utilization of Lamtoro Leaves (Leucaena leucocephala) as Natural Coagulants Riva Ismawati; Rina Rahayu; Rizqa Puspitarini
Indonesian Journal of Science and Education Vol. 7 No. 1 (2023): Indonesian Journal of Science and Education
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/ijose.v7i1.566

Abstract

Water is a vital element for human beings. However, there are still limited clean water services in Indonesia. Raw water treatment is needed to ensure the availability of clean water. One of the methods is by using the coagulation process. The coagulant functions to speed up the coagulation process. Although effective in water treatment, chemical coagulants have some disadvantages. Therefore, it is necessary to develop natural coagulants to overcome the weakness of chemical ones. Natural ingredients can be used as coagulants if they have many macromolecules. Lamtoro leaves are one of the natural materials that are only used to feed the animal. This research aims to examine the potential of lamtoro leaf as a natural coagulant in terms of its content. The research is conducted by testing lamtoro leaf powder using Fourier Transform Infrared Spectroscopy and proximate test. Infrared spectra of lamtoro leaves show the presence of absorption peaks for specific groups of carbohydrate and protein compounds. The proximate test results show that lamtoro leaves contain 24.7% protein and 53.71% carbohydrates. The high protein and carbohydrate contents in lamtoro leaves enable them to be used as a natural coagulant.
Potential for Tofu Industry Liquid Waste Pollution in Mejing Village, Candimulyo Subdistrict, Magelang Riva Ismawati; Rina Rahayu
Indonesian Journal of Science and Education Vol. 8 No. 2 (2024): Indonesian Journal of Science and Education
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/ijose.v8i2.2099

Abstract

This research is intended to analyze the quality of tofu liquid waste, analyze the quality of river water around the tofu industry in Mejing Village and analyze government policies in managing tofu liquid waste. The research method used is grab sampling, observation, and interviews to obtain primary data. Secondary data from journal articles and research reports are used to support primary data. The research results show that the quality of tofu liquid waste has a pH of 2.8-33, a temperature of 41-51 oC and is not in accordance with established quality standards. Tofu liquid waste also has a pungent sour odor, yellowish color, and contains many suspended particles. Disposal of tofu liquid waste into the waters causes the river flowing in Mejing Village to be dirty and indicates light to heavy pollution. The government has set quality standards for wastewater produced by the tofu industry. Unfortunately, the tofu industry in Mejing Village does not comply with this regulation properly. The low awareness of tofu industry players to manage liquid waste is caused by various factors. Good communication between the government and industry players is needed so that industry players know how to process the liquid waste they produce. The government needs to supervise the application of government regulations related to the management of tofu liquid waste and provide sanctions to industries that violate it. Planning for a communal IPAL as well as an appropriate solution must be realized immediately so that the problem of tofu liquid waste in the tofu industry center in Mejing Village can be resolved immediately.
Reading Comprehension Skills of Scientific Texts with Natural Sciences Content of Junior High School (SMP) Students in Magelang City Sari, Kurnia Intan; Siswanto, Siswanto; Ismawati, Riva; Muhlisin, Ahmad
Formatif: Jurnal Ilmiah Pendidikan MIPA Vol 14, No 1 (2024): Formatif: Jurnal Ilmiah Pendidikan MIPA
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat Universitas Indraprasta PGRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/formatif.v14i1.11915

Abstract

The study analyzes the achievement of reading comprehension skills of scientific texts with IPA content of junior high school (SMP) students in Magelang City. The study is a quantitative study using a survey approach method. It is conducted in four SMPs in Magelang City. The study population is 8th grade junior high school (SMP) students in Magelang City that consists of 95 students. Data are generated through an objective test on the students. The analysis results indicate that the average reading comprehension skills of the SMP students in Magelang City is in the fair criteria with an average score of 65. In the literal level comprehension, the average score is 71, the inferential level comprehension receives an average score of 65, and the critical level comprehension, the average score is 58; therefore, all comprehension levels are in the fair category. Factors affecting the reading comprehension skills of the SMP students in Magelang City include environmental and psychological factors.
Co-Authors Adi Iriyanto Adi Nur Cahyono Adinda Permatasari Putri Efendi Agus Wahyudi Ahmad Muhlisin Ahmad Muhlisin Alene Tawang Ambar Rinarni Arif Widiyatmoko, Arif Ayu Nuryanti Aza Mazita Cucun Yuningsih Eli Trisnowati elma yuliantina romadhon Eva Rahayuningsih Feni Nurhidayanti Hapsari Catur Mahardika M. Najib Ngirfani muhammad nur rohman Muhlisin, Ahmad Mukhamad Najib Novitasari Novitasari Nur Sholikah Nuryunita Dewantari Rina Dwik Atanti Rina Rahayu Rina Rahayu Rizqa Puspitarini Rizqa Puspitarini Sari, Kurnia Intan Setiyo Prajoko Setiyo Prajoko Singgih, Suwito Siswanto Siswanto Siswanto, Siswanto Sukron Mazid Theresya Amelya Dhewi Turah Slamet Tutik Arifah Utami Dian Pertiwi Utami Dian Pertiwi