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All Journal Sainstek Biology, Medicine, & Natural Product Chemistry Orbital: Jurnal Pendidikan Kimia Jurnal Pengabdian Pada Masyarakat Jurnal Pendidikan Kimia (JPKim) Jambura Journal of Educational Chemistry Jambura Journal of Chemistry Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya Acta Chimica Asiana Jurnal Sibermas (Sinergi Pemberdayaan Masyarakat) Dedikasi: Jurnal Pengabdian Masyarakat Jurnal Redoks : Jurnal Pendidikan Kimia dan Ilmu Kimia Pentagon: Jurnal Matematika dan Ilmu Pengetahuan Alam Algoritma: Jurnal Matematika, Ilmu Pengetahuan Alam, Kebumian dan Angkasa Masyarakat Mandiri: Jurnal Pengabdian Dan Pembangunan Lokal Damhil: Jurnal Pengabdian kepada Masyarakat Journal of Community Services on Multidisciplinary Sciences Jurnal Pendidikan Kimia, Fisika dan Biologi Jurnal Riset dan Pengabdian Interdisipliner Jurnal Pendidikan Kimia FKIP Universitas Halu Oleo
Ahmad Kadir Kilo
Unknown Affiliation
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Public Health Social Sciences Other

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Usaha Kreatif Berbasis Jagung sebagai Alternatif untuk Meningkatkan Ekonomi di Desa Daenaa, Limboto Barat Tangio, Julhim S; Husain, Rustam I.; Laliyo, Lukman Abdul Rauf; Mohamad, Erni; Zakaria, Perry; Kilo, Ahmad Kadir
Damhil: Jurnal Pengabdian kepada Masyarakat Vol 3, No 1: June 2024
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/damhil.v3i1.26814

Abstract

This community service project seeks to boost the added value and welfare of maize producers through the creation of corn flour products. Corn flour products have tremendous potential in enhancing the economics of the community, especially corn farmers, by delivering food products manufactured from maize that have wonderful tastes and high nutritious value. In addition, the food products created are very popular and have vast market potential. Through the training and mentoring approach of the IbM activities, the community obtained important information and knowledge, enabling them to create innovation and enterprise in the maize sector. The outcomes of this activity demonstrate that this service program not only enhances the skills and knowledge of the community, but also helps the improvement of their economic wellbeing in a sustainable manner.
Peningkatan Kesadaran Masyarakat terhadap Bahaya Penggunaan Zat Aditif dalam Makanan Bialangi, Nurhayati; Musa, Weny J.A; Kilo, Ahmad Kadir; Kurniawati, Erga; Thayban, Thayban
Damhil: Jurnal Pengabdian kepada Masyarakat Vol 2, No 2: December 2023
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/damhil.v2i2.24442

Abstract

Education on the dangers of using food additives is an effort to enhance the public's understanding of the risks associated with consuming foods containing additives. The increased consumption of additives correlates with the rising intake of processed foods. The objective of this community engagement initiative is to raise awareness among the public regarding the potential hazards associated with the use of food additives. The methods employed include lecture-style presentations and discussions. The community gains an understanding of various types of additives commonly used in food, with an emphasis on their benefits, such as prolonging the shelf life of food. However, the education also highlights associated risks, including potential adverse effects on health like allergies, digestive disorders, and long-term effects that are not fully understood. The activities took place in the village of Hutadaa in Gorontalo Regency, with a total of 18 participants. The participants were enthusiastic, and increased knowledge was evident through the questions raised during the session.
STUDI KINETIKA EKSTRAKSI TEMBAGA DARI BIJIH ENARGIT DALAM LARUTAN ASAM SULFAT Kostiawan Sukamto; Isal Kamumu; Ahmad Kadir Kilo; Akram La Kilo
Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya Vol. 7 No. 2 (2025): Literasi Artikel Penelitian Kimia
Publisher : Program Studi Kimia, Fakultas MIPA, Universitas PGRI Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36526/jc.v7i2.6239

Abstract

This study investigates the kinetics of copper extraction from enargite ore (Cu₃AsS₄) using sulfuric acid (H₂SO₄) solution with hydrogen peroxide (H₂O₂) as an oxidizing agent. Leaching experiments were carried out under various operating conditions, including H₂SO₄ concentrations (1, 1.5, and 2 M), H₂O₂ concentrations (1, 1.5, and 3 M), solid percentages (5%, 10%, and 15%), and temperatures (30, 40, and 50 °C), with a leaching time of up to 480 minutes. The results indicated that higher concentrations of H₂SO₄ and H₂O₂ significantly enhanced copper extraction efficiency, while increasing solid percentage reduced the leaching performance. The optimum condition was achieved at 2 M H₂SO₄, 3 M H₂O₂, 5% solids, and 50 °C, resulting in a maximum copper extraction of 97.95%. Kinetic analysis revealed that the leaching process was predominantly controlled by diffusion through a porous product layer based on the shrinking core model, but shifted to interface reaction control at higher temperatures. These findings provide new insights into the leaching mechanism of enargite ore and serve as a foundation for developing more efficient and environmentally friendly hydrometallurgical processes for copper recovery.
PERBANDINGAN AKTIVITAS ANTIOKSIDAN EKSTRAK METANOL KULIT BATANG GANDARIA DENGAN METODE DPPH DAN ABTS Boima Situmeang; Nurhayati Bialangi; Weny JA Musa; Ahmad Kadir Kilo; Holisha Widiyanto; Dian Susvira; Nani Yulianti
JURNAL REDOKS : JURNAL PENDIDIKAN KIMIA DAN ILMU KIMIA Vol 8 No 2 (2025): Jurnal Redoks : Jurnal Pendidikan Kimia dan Ilmu Kimia
Publisher : Program Studi Pendidikan Kimia STKIP Bima

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33627/re.v8i2.3323

Abstract

Penelitian ini bertujuan untuk membandingkan aktivitas antioksidan ekstrak metanol kulit batang gandaria (Bouea macrophylla Griff.) menggunakan dua metode pengujian, yaitu DPPH (2,2-diphenyl-1-picrylhydrazyl) dan ABTS (2,2′-azinobis(3-ethylbenzothiazoline-6-sulfonic acid)). Ekstraksi dilakukan secara maserasi menggunakan pelarut metanol. Aktivitas antioksidan ditentukan berdasarkan nilai IC50, yaitu konsentrasi yang diperlukan untuk meredam 50% radikal bebas. Hasil uji menunjukkan bahwa ekstrak memiliki aktivitas antioksidan sangat kuat dengan nilai IC50 sebesar 12,259 ± 0,232 ppm untuk metode DPPH dan 15,831 ± 1,550 ppm untuk metode ABTS. Nilai IC50 yang lebih rendah pada metode DPPH menunjukkan bahwa ekstrak memiliki kemampuan yang lebih tinggi dalam menangkap radikal bebas pada metode tersebut. Hasil ini menunjukkan bahwa kulit batang gandaria berpotensi sebagai sumber antioksidan alami yang efektif dengan kemampuan merangkal radikal bebas DPPH dan ABTS sangat kuat.
Pengaruh Model Pembelajaran Discovery Learning Berkonteks STEM Terhadap Kemampuan Siswa Memecahkan Masalah pada Materi Sifat Koligatif Larutan Sitti Nurhalizah Dunggio; Astin Lukum; Lukman A.R Laliyo; Masrid Pikoli; Ahmad Kadir Kilo; Mangara Sihaloho
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Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jrpi.v3i3.39732

Abstract

This study aimed to examine the influence of the discovery learning model in the STEM context on students’ problem-solving skills in the colligative properties of solution material in grade XII of SMA Negeri 4 Gorontalo. The data used in this study resulted from students’ problem-solving skills. Based on analysis, the avarage score of students’ critical thinking skills was obtained with a tcount value of 11.13 and a ttable value of 1.67065 (tcount ttable), which indicated that H0 was rejected and H1 was confirmed. In conclusion, the Discovery Learning Model influences students’ problem-solving skills in the colligative properties of solution material in the context of STEM.
Efektivitas Model Pembelajaran Inkuiri Terbimbing Berpendekatan STEM dalam Meningkatkan Penguasaan Konsep dan Kemandirian Belajar Lukman A.R. Laliyo; Indra Igirisa; Ahmad Kadir Kilo; Astin Lukum; Masrid Pikoli; Haris Munandar
Jurnal Pendidikan Kimia FKIP Universitas Halu Oleo Vol. 9 No. 2 (2024): Agustus 2024
Publisher : Jurusan Pendidikan Kimia Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36709/jpkim.v9i2.73

Abstract

Tujuan penelitian ini untuk menguji efektivitas model pembelajaran inkuiri terbimbing berpendekatan STEM dalam meningkatan penguasaan konsep dan kemandirian belajar siswa. Penelitian ini merupakan penelitian kuantitatif dengan subyek 88 siswa kelas XI IPA di SMAN 1 Telaga Biru. Hasil analisis penguasaan konsep diperoleh nilai rata-rata pretest pada masing-masing kelas XI IPA yaitu sebesar 18,04, 18,07 dan 18,04 sedangkan hasil posttest yaitu sebesar 72,03, 73,32 dan 62,75.Hasil analisis kemandirian belajar diperoleh nilai rata-rata pretest pada masing-masing kelas XI IPA yaitu sebesar 52,25, 47,94 dan 56,63 sedangkan hasil posttest yaitu sebesar 79,71, 74,20 dan 79,75. Hipotesis diuji menggunakan uji (t-Test: Paired Two Sample for Means). Dari data anilisis menunjukkan: 1) Diperoleh P (T<=t) two-tail sebesar 0,000 pada taraf signifikan 0,05; 2) Diperoleh P(T<=t) two-tail sebesar 0,000 pada taraf signifikan 0,05 artinya model pembelajaran inkuiri terbimbing efektif dalam meningkatkan penguasaan konsep kemandirian belajar.
Two-Tier Diagnostics for Evaluating Submicroscopic Representations in Stoichiometry Muhammad Fath Azzajjad; Dewi Satria Ahmar; Ahmad Kadir Kilo
Jambura Journal of Educational Chemistry Vol 8, No 1 (2026): February
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjec.v8i1.36488

Abstract

Stoichiometry is a fundamental concept in chemistry that requires students to coordinate symbolic calculations with submicroscopic representations of particles and reactions. However, previous studies consistently show that students often rely on algorithmic procedures without developing coherent particle-level reasoning, leading to persistent misconceptions. This representational gap remains a major challenge in Basic Chemistry instruction. Therefore, this study aimed to examine the effectiveness of audiovisual-supported Problem-Based Learning (PBL) in enhancing students’ submicroscopic representational ability in stoichiometry using a two-tier diagnostic approach. A quasi-experimental design with a posttest-only comparison was employed involving 33 undergraduate students enrolled in a Basic Chemistry course. Participants were divided into two groups with equivalent initial ability distributions: an experimental group receiving PBL integrated with audiovisual media (n = 16) and a control group receiving PBL without audiovisual support (n = 17). Students’ submicroscopic understanding was measured using a two-tier multiple-choice diagnostic test assessing both response accuracy and particle-level reasoning. Data were analyzed through descriptive statistics, diagnostic category profiling, and effect size estimation. The results reveal that the experimental group demonstrated substantially higher levels of coherent submicroscopic representation and significantly lower misconception rates than the control group. Learning gains were consistent across all stoichiometry subtopics, with particularly strong effects observed in relational and inferential tasks such as particle ratio interpretation and limiting-reactant reasoning (Cohen’s d = 1.41). These findings indicate that audiovisual-supported PBL effectively facilitates students’ transition from procedural problem solving to meaningful particle-level understanding. The study underscores the importance of integrating representationally rich instructional media and diagnostic assessments to promote deeper conceptual learning in stoichiometry and chemistry education.
Co-Authors Achmad Zainuddin Akram La Kilo Akram La Kilo Arviani Arviani Arwin, Muh Astin Lukum Astria Endesei Azzajjad, Muhammad Fath Boima Ramses Situmeang Boima Situmeang Boima Situmeang Darwati Darwati Deasy Natalia Botutihe Dewi Satria Ahmar Dian Susvira Djafar La. Kilo Erga Kurniawati Erni Mohamad Hadis, Sutra S HARIS MUNANDAR Haris Munandar Hendri Iyabu Holisha Widiyanto Indra Igirisa Isal Kamumu Ishak Isa Jafar La Kilo Julhim S Tangio Julhim S Tangio Julhim S. Tangio Kostiawan Sukamto, Kostiawan Kupang, Sri Revayana La Alio La Ode Aman Lukman A. R. Laliyo Mangara Sihaloho Mantuli, Mohamad Alan Marnila Marnila Masrid Pikoli Moh Musli Malajai Musa, Weny J.A. Naiyo, Marlina H. Nani Yulianti Netty Ino Ischak Nita Suleman Nur Rafida Akub Nur Riska Apriana Nurhayati Bialangi Nurvita Abdullah Oktafiani, Ismi Perry Zakaria Primawati, Junia Salsha Regina Olii Reski Rahmatia Idris Rustam I. Husain Sitti Nurhalizah Dunggio Sri Wanti Sappe Sufriyanto Ibrahim Suleman Duengo Thayban, Thayban Wenny J A Musa Weny J.A Musa Weny J.A Musa Wiwin Rewini Kunusa Yuszda K. Salimi Yuzda K Salimi Zainudin, Farnawaty