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All Journal International Journal of Evaluation and Research in Education (IJERE) Jurnal Penelitian dan Evaluasi Pendidikan Jurnal Entropi Jurnal Inovasi Pendidikan Kimia Irfani Tadbir: Jurnal Manajemen Pendidikan Islam SEJ (Science Education Journal) Orbital: Jurnal Pendidikan Kimia Indonesian Journal of Chemistry Jambura Journal of Educational Chemistry Jambura Journal of Chemistry JKPK (Jurnal Kimia dan Pendidikan Kimia) Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya JATI EMAS (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) Jurnal Penelitian, Pendidikan dan Pengajaran: JPPP Jurnal Sibermas (Sinergi Pemberdayaan Masyarakat) Jurnal Pendidikan Ilmu Pengetahuan Alam (JP-IPA) Arus Jurnal Sosial dan Humaniora Arus Jurnal Psikologi dan Pendidikan Jurnal Pendidikan Sang Surya EDUCTUM: Journal Research Innovative: Journal Of Social Science Research International Journal of Technology and Education Research International Journal of Education, Vocational and Social Science Pentagon: Jurnal Matematika dan Ilmu Pengetahuan Alam Damhil: Jurnal Pengabdian kepada Masyarakat Indonesian Journal of Innovation Multidisipliner Research Jurnal Cendekia Ilmiah PESHUM Jurnal Pendidikan Kimia, Fisika dan Biologi Konstanta : Jurnal Matematika dan Ilmu Pengelatuan Alam
Astin Lukum
Jurusan Kimia, Universitas Negeri Gorontalo
Religion Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Other

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STUDI PENGARUH VARIASI PH DAN KOLEKTOR PADA EFISIENSI FLOTASI MINERAL TEMBAGA SULFIDA Kostiawan Sukamto; Astin Lukum; Akram La Kilo
Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya Vol. 7 No. 1 (2025): Publikasi Penelitian Kimia dan Terapannya 2025
Publisher : Program Studi Kimia, Fakultas MIPA, Universitas PGRI Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36526/jc.v7i1.5152

Abstract

This study aims to investigate the effect of pH variations and collector types on the recovery efficiency and Cu content in copper sulfide mineral samples. The experiment was conducted by varying the pH (6, 8, 10, and 12) and using different types of collectors, namely Xanthate, Potassium Amyl Xanthate (PAX), Diethyl Dithiophosphate (DTP), and a combination of PAX + DTP. Control variables included flotation time (5, 10, 15, 20, and 25 minutes), collector concentration at 50 mg/L, particle size <75 µm, and the use of Frother Methyl Isobutyl Carbinol (MIBC) at a concentration of 10 mg/L. Modifiers such as NaOH and H₂SO₄ were used to adjust the pH, while Copper Sulfate (CuSO₄) served as an activator and Sodium Metabisulfite (Na₂S₂O₅) as a depressant. The results showed that variations in pH and collector types significantly influenced recovery efficiency and Cu content in the concentrate. In general, the highest recovery efficiency was achieved at pH 10 with the combination of PAX + DTP, which resulted in a higher Cu content compared to other single collectors. This combination was able to improve recovery efficiency to over 75%, with Cu content in the concentrate reaching 28%. Therefore, the findings suggest the use of a collector combination and pH optimization as strategies to enhance the performance of copper sulfide flotation.
Peran Green Chemistry dalam Mewujudkan Pembelajaran Kimia yang Bermakna: Kajian Literatur Nyoman Sriastuti; Astin Lukum; Masrid Pikoli
Jurnal Pendidikan Ilmu Pengetahuan Alam (JP-IPA) Vol 7, No 2 (2026): Mei 2026
Publisher : STKIP HARAPAN BIMA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56842/jp-ipa.v7i2.1039

Abstract

Green chemistry is a relevant approach in supporting meaningful and sustainability-oriented chemistry learning. This study aims to (1) analyze the implementation and integration of green chemistry principles in chemistry learning, (2) analyze its role in realizing meaningful learning, (3) analyze its impact on students’ conceptual understanding and environmental awareness attitudes, and (4) analyze the challenges and opportunities of its implementation. This research uses a qualitative approach with a literature review design of accredited national journal articles and reputable international journals from the 2020–2026 period. Out of 40 identified articles, 24 articles were analyzed using thematic analysis. The results show that (1) the implementation of green chemistry is carried out through active learning, development of instructional materials, utilization of technology, and contextual approaches; (2) green chemistry plays a role in realizing meaningful learning by connecting concepts to environmental issues; (3) its integration has a positive impact on students’ conceptual understanding and environmental awareness attitudes, although the level of improvement is generally moderate; and (4) its implementation still faces challenges related to teacher competence, learning resources, and curriculum support, but it also has opportunities for further development. The conclusion of this study is that green chemistry plays a strategic role in realizing meaningful chemistry learning by linking chemical concepts to real environmental problems and supporting sustainable chemistry education.
Kajian Kimia dalam Sistem Kehidupan Melalui Pendekatan Kontekstual Berbasis Kearifan Lokal Dalam Pembelajaran Kimia: Tinjauan Literatur Nur Azizah Dj. Junus; Astin Lukum; Masrid Pikoli
Jurnal Pendidikan Ilmu Pengetahuan Alam (JP-IPA) Vol 7, No 2 (2026): Mei 2026
Publisher : STKIP HARAPAN BIMA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56842/jp-ipa.v7i2.1038

Abstract

The study of chemistry in living systems through a contextual approach based on local wisdom aims to (1) identify publication trends; (2) identify dominant research subjects; (3) examine learning approaches; (4) identify chemical materials most frequently associated with living systems; (5) describe forms of local wisdom integration; and (6) examine the research methods used. This study uses the Systematic Literature Review (SLR) method with a qualitative descriptive design for articles from the 2020–2026 period. The research procedure includes identification, selection, analysis, and synthesis of articles based on inclusion and exclusion criteria. The research objects are scientific articles on local wisdom-based chemistry learning. Data were collected through scientific database searches and analyzed descriptively. Of the 50 articles found, 17 articles met the analysis criteria. The results of the study show that: (1) publications increased in 2023–2025; (2) research subjects were dominated by high school students; (3) the ethnochemical approach was most widely used; (4) frequently studied materials included acids and bases, environmental chemistry, and colloidal systems; (5) integration of local wisdom is carried out through cultural analogies, utilization of local resources, and the environment as a learning context; and (6) type of research dominated by qualitative and development approaches. In conclusion, local wisdom-based chemistry learning has the potential to strengthen the relevance of learning and students' chemical literacy.
Rasch PCM Diagnostic Analysis of Critical Thinking Item Responses in Indonesian Atomic Structure Learning Laliyo, Lukman A.R; Katili, Yeyen Apriani; Lukum, Astin; Kilo, Akram La; Pikoli, Masrid
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 11, No 1 (2026): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v11i1.112310

Abstract

Measuring critical thinking skills (CTS) in the topic of atomic structure requires a diagnostic instrument capable of capturing students' reasoning patterns accurately, rather than merely distinguishing between correct and incorrect answers. This study aimed to develop and evaluate a complex multiple-choice diagnostic instrument based on the Rasch model to measure students' CTS on the concept of atomic structure. The instrument comprised ten items developed based on Facione's six dimensions of critical thinking: interpretation, analysis, evaluation, inference, explanation, and self-regulation. Data were collected from 850 senior high school students in Gorontalo, Indonesia, and analyzed using the Partial Credit Model (PCM) approach with WINSTEPS 4.5.5 software. Results indicated that item reliability was very high (0.99; separation = 10.63), while person reliability was moderate (0.61; Cronbach's Alpha = 0.65). Infit and Outfit MNSQ values ranged within the ideal threshold (0.99–1.00) with ZSTD values approaching zero, confirming adequate model fit. Category Probability Curve (CPC) analysis confirmed that response categories functioned sequentially, while the Wright Map demonstrated a progressive difficulty hierarchy from the interpretation to the self-regulation dimension. Differential Item Functioning (DIF) analysis revealed differential difficulty levels based on gender and grade level, particularly for self-regulation items, which proved more challenging for female students and Grade XI students. These findings underscore the importance of considering cognitive factors and learning experience in developing Rasch-based CTS diagnostic instruments for chemistry education
Pemanfaatan Kitosan Dari Kulit Udang (Panaeus Monodon) Sebagai Pengawet Ikan Kembung (Rastrelliger Sp) Bintang Maharani; Astin Lukum; Deasy Natalia Botutihe; Yuszda K. Salimi; La Alio; Hamid Majelis
Indonesian Journal of Innovation Multidisipliner Research Vol. 4 No. 2 (2026): April - Juni
Publisher : Institute of Advanced Knowledge and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69693/ijim.v4i2.632

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh variasi konsentrasi kitosan kulit udang (Penaeus monodon) terhadap daya simpan dan kualitas ikan kembung (Rastrelliger sp) selama penyimpanan. Penelitian dilakukan tahapan, yaitu proses pengawetan ikan menggunakan kitosan serta penggunaan garam sebagai pembanding. Selanjutnya dilakukan karakterisasi kualitas ikan melalui beberapa pengujian, meliputi analisis pH, uji organoleptik, Hasil penelitian menunjukkan bahwa pengawetan ikan menggunakan kitosan mampu mempertahankan daya simpan hingga 14 hari. Pada uji pH, konsentrasi kitosan 2% berada pada kisaran 6,00–7,15 dengan hasil organoleptik terbaik dibandingkan konsentrasi 3% dan 4%. Konsentrasi 3% memiliki kisaran pH 6,45–7,32 dengan kualitas organoleptik lebih baik dibandingkan konsentrasi 4%. Sementara itu, konsentrasi 4% memiliki kisaran pH 6,80–7,90 dengan hasil organoleptik paling rendah.
Co-Authors Abas, Dina Ahmad Kadir Kilo Aisyah, Sifa Nurul Akili, Abd. Wahid Rizaldi Akram La Kilo Akram La Kilo Anggraini Dj Usman Ansar Anwar, Nurhayati Apriani Katili, Yeyen Ardi Kapahang Arfan Arsyad Arifin Suking Arviani Arviani Asniwati Zainuddin Bintang Maharani Botutihe, Deasy N Botutihe, Deasy N. Deasy Natalia Botutihe Dilapanga, Windi Emma Julin Pongoh Erga Kurniawati Erni Mohamad Evie Paendong Faisal Moko Faisal Moko Fajriyanto Djafar Fatma Tahir Febriyani Tue Genes, Alma J Guge, Sri Rahmawati Hamid Majelis Haris Munandar Hasan, Meiske Hendri Iyabu Hikaya, Nur’ain I Made Hermanto Ihsan, Maimun Ishak Isa Jaapar, Minarti Jepril Julhim S Tangio Julhim S. Tangio K Baderan K. Salimi, Yuszda Katili, Yeyen Apriani Kostiawan Sukamto, Kostiawan La Alio La Alio La Ode Aman Laliyo, Lukman A.R Lasulika, Cindy Tsasil Linggama, Fadila Luawo, Aprilia Lukman A. R. Laliyo Lukman A.R. Laliyo Lutfiani, Wiwit Machmud, Dewi Sartika Manaa, Ramayanti N Mangara Sihaloho Mardjan Paputungan Margaretha Solang Marnila Marnila Masrid Pikoli Masrina . Mayawati Uno Miftahul Nur Moko, Faisal Muhammad isman Jusuf Muhammad Isra Nasadi, Nurlaila Nita Suleman Noi, Siskawati Novianty Djafri Nur Azizah Dj. Junus Nur Fadillah Pulukadang Nurhayana, Nurhayana Nurhayati Bialangi Nyoman Sriastuti Opir Rumape Pahrun, Abdul Wahab Podu, Regina Putri Polamolo, Adelia Nur Pou, Siti Nurhaliza Pratiwi One Putriani L. Maliki Rauf, Nuramna Roslina Imran Rustam I. Husain Rymond Jusuf Rumampuk S. Gani, Melinda Sabihi, Aprianto Sabora, Ririn S. Saeng, Cicilia Yulianti Sangkota, Vivi Dia Afrianti Sermiati Angkareda Siti Aminah Siti Jabaria Anwar Siti Nurhaida AR Salam Sriyana Ohi Suryanto Suryanto Syam S. Kumaji Tahir, Wawan Thayban Thayban Thayban, Thayban Tirtawaty Abdjul Tue, Febriyani Uge, Asna Umar, Ahmat Sudir Widya Rahmawaty Saman Wiwin Rewini Kunusa Yoseph Paramata Yusuf, Sri Ayuning Yuszda K Salimi Yuszda K. Salimi