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All Journal Jurnal Pendidikan dan Pembelajaran Kimia (JPPK) Jurnal SOLMA Eksakta : Berkala Ilmiah Bidang MIPA Sainstek : Jurnal Sains dan Teknologi Indonesian Journal of Chemical Science and Technology Jurnal Wawasan Pendidikan
Zubir, Moondra
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Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Education Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Other

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Synthesis and Characterization of Activated Carbon/Alginate-Fe Composites as Slow Release Fertilizer Panjaitan, Teguh Hidayat; Muchtar, Zainuddin; Rahmah, Siti; Zubir, Moondra; Pulungan, Ahmad Shafwan; Selly, Rini; Faradilla, Putri
Indonesian Journal of Chemical Science and Technology (IJCST) Vol 7, No 1 (2024): JANUARY 2024
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v7i1.62302

Abstract

Research on the slow release kinetics of Fe(III) ions from Activated Carbon/Alginate-Fe(III) composites or abbreviated as K/A-Fe(III) has been carried out. The aim of this research was to synthesize K/A-Fe(III) composite as a material that has the potential to become a slow release micronutrient fertilizer and to study the kinetics of slow release of Fe(III) ions from the composite. The K/A-Fe(III) composite was synthesized by mixing alginate suspension and activated carbon (alginate: activated carbon weight ratio = 1:3 and 3:1) until homogeneous. Composite grains were characterized using Fourier Transformed Infrared (FTIR) spectroscopy, the kinetics of Fe(III) release from the three composite variations found that KAlg31 composite showed more absorption and release of Fe ions than KAlg13.
The Effect of Reading to Learn (R2L) Based Modules on Increasing Stedents HOTs-Literacy In Chemical Bonding Materials Putra, Adhitya Shahrian; Siahaan, Stephani Yunita; Aulia, Shelly; Khairunisa, Dira; Juwita, Intan; Batubara, Diva Angelica Amanda; Zubir, Moondra
Jurnal Pendidikan dan Pembelajaran Kimia Vol 13, No 3 (2024): Jurnal Pendidikan dan Pembelajaran Kimia
Publisher : Universitas Lampung

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Abstract

This study aims to identify whether the use of Reading to Learn (R2L) based modules can affect the improvement of students' HOTs-Science Literacy in chemical bonding material. The population in this study consisted of students of class XI MAN 1 MEDAN who were divided into six classes. The sample of the study was 30 students of class XI MIPA 1. The instrument used in this study was a test with 15 multiple-choice questions. Hypothesis testing was carried out using a regression model, with the results of the study showing a sig value of 0.01 <???? (0.05), which means Ha is accepted and H0 is rejected. This shows that the use of R2L based modules has an effect on students' HOTs-Science Literacy abilities. Furthermore, in science literacy abilities, a sig value of 0.03 <???? (0.05) was obtained, which also shows that Ha is accepted and H0 is rejected, indicating the influence of science literacy abilities on improving students' HOTs-Science Literacy in chemical bonding material. Finally, the influence of the R2L-based module on students' HOTs-Science Literacy abilities in solving HOTs-Literacy problems on chemical bonding material simultaneously shows a sig value of 0.00 < ???? (0.05), which means that the R2L-based module has a significant influence on students' HOTs-Science Literacy abilities on the material.Keywords: Reading To Learn (R2L) Based Module, HOTs-literacy, Chemical BondsDOI: 10.23960/jppk.v13i3.31940
DIFFERENCES IN MOTIVATION AND STUDENT LEARNING OUTCOMES LEARNED WITH DIGITAL SNAKES AND LADDERS MEDIA ON CHEMICAL BONDING MATERIALS AT SMAN 5 MEDAN Jannah, Nazria Marwatul; Zubir, Moondra
Jurnal Pendidikan dan Pembelajaran Kimia Vol 13, No 2 (2024): Jurnal Pendidikan dan Pembelajaran Kimia
Publisher : Universitas Lampung

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Abstract

Research purposes This that is For know difference motivation and results Study students studied with snake media digital ladder on material bond chemistry as well as enhancement and correlation between motivation and results Study student . Study This is study quantitative . Deep sample study This taken purposive sampling of 2 classes i.e. X 11 as class experiments I and X 10 as class experiment II, where each class 30 students were taken based on similarity results pretest . Instruments used that is instrument test form question choice double  as well as non- test instrument form sheet questionnaire motivation learn . Testing hypothesis done with using the SPSS Statistics version 24 for Windows computer program Independent Sample T-Test and Bivariate Pearson Correlation. For hypothesis I is obtained sig value . (2-tailed) 0.000 (0.05 ) so that H a accepted , which means there is difference motivation Study students studied with snake media digital ladder . For hypothesis II is obtained mark sig. (2-tailed) 0.022 (0.05 ) so that H a accepted , which means there is difference results Study students studied with snake media digital ladder . For hypothesis III is obtained enhancement motivation learn what is learned with snake media digital ladder by 40%. For hypothesis IV is obtained enhancement results learn what is learned with snake media the digital ladder is 76% in the category tall . For hypothesis V is obtained mark sig. (2-tailed) of 0,000 (0.05) so that H a accepted , which means there is correlation between motivation learning and results Study students studied with snake media digital ladder on material bond chemistry .Keywords : Digital Snakes and Ladders , Motivation Learning , Learning Results , Chemical Bonding DOI: 10.23960/jppk.v13i2.30012
Pendampingan Optimalisasi Operasi Hydro Power Plants 30 KW berstandar K3 di Desa Suka Maju Kec. Sibolangit Agus, Junaidi; Kabul, Abdul Hamid; Zubir, Moondra; Suprapto, Suprapto; Sinuraya, Arwadi
Jurnal SOLMA Vol. 13 No. 3 (2024)
Publisher : Universitas Muhammadiyah Prof. DR. Hamka (UHAMKA Press)

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Abstract

Background: Pelaksanaan Program Kemitraan Wilaya (PKW) dengan Mitra Pemerintahan Desa dan Badan Usaha Desa (Bumdes) Suka Maju Kecamatan Sibolangit Kabupaten Deli Serdang. Badan Usaha Desa (BUMDES) Desa Sukamaju yang mengelola Hydro Power 30 KW dan Ternak sapi/kambing. Tujuan dari pengabdian kepada masyarakat ini adalah Operator Hydro Power memperoleh pengatahuan operasi Hydro Power memenuhi unsur K3, dan pemenuhan wiring pada panel kontrol berstandar. Metode: Focus Group Discusion, mejaring informasi masalah mitra dan penawaran kerjasama untuk solusi permasalahan. Kegiatan Sosialisai, memperikan peltihan standar K3 bagi operator Hydro Power 30 KW. Hasil: 12 Orang Mitra PKW yang terlibat pada kegiatan sosialisasi dan pendampingan memperoleh pengathuan standar K3 dengan tingkat rata-rata pemahaman sebelum kegiatan pendampingan 62% pada katagori cukup paham meningkat menjadi 85% memahami. Hasil pengawatan terhadap beberapa peralatan kontrol pada House Power memenuhi standar K3 untuk keselamatan Oparator Bumdes
Pencil Lead Electrode Modified with Gold Thin Layer for Voltammetric Detection of Chromium (VI) Sari, Trisna Kumala; Riga, Riga; Zubir, Moondra
EKSAKTA: Berkala Ilmiah Bidang MIPA Vol. 22 No. 2 (2021): Eksakta : Berkala Ilmiah Bidang MIPA (E-ISSN : 2549-7464)
Publisher : Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Negeri Padang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (759.742 KB) | DOI: 10.24036/eksakta/vol22-iss2/265

Abstract

Cr(VI) is a toxic, mutagenic, and carcinogenic metal. This heavy metal have effect harmful on organism and the environment. In this study, an electroanalytic approach was improved for detection of the Cr(VI) using a pencil lead electrode modified with gold thin layer by cyclic voltammetry. Gold thin layer was electrodeposited on the pencil lead electrode surface with potential-sweeping technique at scan of potential from 1.2 V to 0 V. Since the Cr(VI) species depends on the pH, effect of supporting electrolytes matrix at various pH were investigated. It was found that Cr(VI) gave a reduction peak with a peak potential of 0.35 V vs Ag/AgCl in cyclic voltammogram with 0.1M HClO4 as supporting electrolyte. The calibration curve for Cr(VI) at gold thin layer modified pencil lead electrode shows linearity in range of 5 µM to 100 µM with a detection limit of 2.3 µM achieved.
PERKEMBANGAN PENELITIAN PENDIDIKAN LINGKUNGAN HIDUP DI KAWASAN ASIA TENGGARA SELAMA KURUN WAKTU 1991 - 2025 Azizah, Rifka Noor; Prayogo, Wisnu; Mustaqiman, Aulia Nur; Awfa, Dion; Zubir, Moondra
Jurnal Wawasan Pendidikan Vol 5, No 2 (2025): Agustus 2025
Publisher : Fakultas Ilmu Pendidikan, Universitas Persatuan Guru Republik Indonesia Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/jwp.v5i2.24369

Abstract

Penelitian ini bertujuan untuk mengkaji perkembangan penelitian PLH di kawasan Asia Tenggara selama periode 1991 hingga 2025. Kajian dilakukan melalui telaah literatur sistematis terhadap artikel-artikel yang diterbitkan di jurnal bereputasi nasional dan internasional. Analisis difokuskan pada tren publikasi, topik dominan, pendekatan metodologis, serta kontribusi praktis terhadap kebijakan dan praktik pendidikan. Hasil menunjukkan adanya peningkatan signifikan dalam jumlah publikasi sejak tahun 2000, dengan puncak pada dekade 2010-an. Topik yang paling sering dibahas meliputi pendidikan berbasis konservasi, partisipasi komunitas, dan integrasi isu lingkungan ke dalam kurikulum formal. Indonesia dan Malaysia menjadi negara dengan kontribusi publikasi tertinggi. Meskipun demikian, masih ditemukan tantangan seperti keterbatasan data longitudinal, rendahnya kolaborasi antar-negara, serta minimnya pendekatan transdisipliner. Penelitian ini merekomendasikan perlunya penguatan kurikulum PLH, pengembangan platform kolaboratif antar lembaga pendidikan di kawasan, serta integrasi teknologi digital dalam penyampaian materi PLH. Temuan ini diharapkan dapat menjadi dasar perumusan strategi regional yang lebih inklusif dan adaptif dalam menghadapi tantangan lingkungan di masa depan. Dengan memperkuat riset dan praktik PLH, kawasan Asia Tenggara memiliki potensi besar untuk menjadi pelopor dalam pembangunan berkelanjutan yang berbasis pada literasi ekologi masyarakat.
Effect of Fermentation Time on Acidity, Electrical Voltage and Volume of Apple (Malus domestica), Mango (Mangifera indica), Starfruit (Averrhoa bilimbi) Solutions Yusfiani, Marnida; Ningsih, Liska Kustria; Azzahra, Nabila; Purba, Nesya Maharani; Arayan, Miftah; Sembiring, Rahel Natalia; Zubir, Moondra; Hakim, Abd
Indonesian Journal of Chemical Science and Technology (IJCST) Vol. 8 No. 2 (2025): JULY 2025
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v8i2.68717

Abstract

This study aims to analyze the effect of fermentation time on the electrical voltage, acidity (pH), and solution volume of apple, mango, and starfruit extracts as natural electrolytes in electrochemical cells. The fruit extracts were fermented using baker's yeast (Saccharomyces cerevisiae) for five days at room temperature, with measurements of electrical voltage, pH, and volume on days 1, 3, and 5. The results showed an increase in electrical voltage over fermentation time, with the highest value in starfruit (0.9 Volt, pH 2, final volume 140 mL). The decrease in pH and solution volume during fermentation indicated an increase in acidity and ion concentration which strengthened the conductivity of the solution as an electrolyte. This study proves the potential of local fruit extracts as a source of environmentally friendly electrolytes for alternative energy based on bioelectrochemistry.
Kinetics and Equilibrium Properties of Cu(II) Adsorption Using Modified Activated Carbon from Empty Oil Palm Fruit Bunches Br Manik, Trivena Myta; Ramadhan, Dwi Sapri; Faradilla, Putri; Rahmah, Siti; Selly, Rini; Jasmidi; Zubir, Moondra
Indonesian Journal of Chemical Science and Technology (IJCST) Vol. 8 No. 2 (2025): JULY 2025
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v8i2.68724

Abstract

Oil palm empty fruit bunch (EFB) is a biomass waste containing lignocellulose that has the potential to be used as activated carbon to adsorb heavy metals such as Cu(II). This study aims to compare the adsorption performance of Cu(II) ions from three types of TKKS-based adsorbents, namely pure activated carbon (A.C), Fe-Cu metal modified activated carbon (A.C-Fe-Cu), and activated carbon composite with Cu(TAC)₂ (A.C-Cu(TAC)₂). Data were obtained from two previous studies and analyzed using first- and second-order pseudo-kinetic models, as well as Langmuir and Freundlich isotherm models. Results showed that all adsorbents followed a two-order pseudo-kinetic model with R² ≥ 0.998, indicating a chemisorption mechanism. A.C-Fe-Cu showed the highest maximum adsorption capacity (389.47 mg/g) and the best fit to both isotherm models, while A.C-Cu(TAC)₂ showed suboptimal results. Thus, the modification of TKKS with Fe-Cu metal synergistically increases the effectiveness of adsorption on Cu(II) ions and has potential for wastewater treatment applications.
Adsorption of Soluble Ammonia Using A Porous Polymer Composite Cu-(TAC) And Activated Carbon Empty Fruit Palm Oil Zubir, Moondra; Jasmidi; Selly, Rini; Pulungan, Ahmad Shafwan; Miswanda, Dikki; Wardana, Novrizaldi; Rahmah, Siti; Faradilla, Putri; Ramadhan, Dwi Sapri
Indonesian Journal of Chemical Science and Technology (IJCST) Vol. 8 No. 2 (2025): JULY 2025
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v8i2.68729

Abstract

This study aims to determine the stages in the process of making activated carbon, synthesis of porous polymer composites Cu(TAC) and activated carbon composites (KA-Cu(TAC) for adsorption of dissolved ammonia (NH4OH). To know the characterization results of activated carbon and KA- Cu(TAC), as well as knowing the optimum mass, concentration, and contact time of activated carbon KA-Cu(TAC) for the adsorption of dissolved ammonia. The research stages started from Empty Oil Palm Bunches (EFB) used as biosorbents for carbon production at 500oC. The resulting product was activated with H3PO4, then modified with porous polymer Cu(TAC) to make a composite. The KA-Cu(TAC) composite was synthesized by reflux method. Then MOFs, activated carbon and KA-Cu(TAC) composite were characterized by BET. The BET characterization results showed that the successfully synthesized KA-Cu(TAC) composite experienced an increase in surface area.In the NH4OH adsorption process the optimum mass efficiency on activated carbon still increased at 8 grams while the KA-Cu(TAC) composite obtained an efficiency of 36, 6% and optimally at a mass of 4 g. At variations in concentration, the efficiency of the two samples still decreased. And the optimum time efficiency obtained in the NH4OH adsorption process with activated carbon was 70% and the KA-Cu(TAC) composite was 86.6%, both samples were equally optimal at 75 minutes
Influence of Citric, Acetic, and Ascorbic Acids on the Solubility of Paracetamol Ramadhan, Dwi Sapri; Wardana, Dian; Fahmi, Jaman; Safitri, Wulan Dwi; Aulia, Amanda; purba, Gracia; Manalu, Anrian Haholongan; Damanik, Angelica; Tambunan, Ida Mariati; Zubir, Moondra; S, Abd Hakim
Indonesian Journal of Chemical Science and Technology (IJCST) Vol. 8 No. 2 (2025): JULY 2025
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v8i2.68730

Abstract

This study examined the influence of citric, acetic, and ascorbic acids on the solubility of paracetamol, an analgesic with inherently low aqueous solubility. Paracetamol tablets were dissolved in different concentrations of organic acid solutions, and dissolution times were visually monitored. The most rapid dissolution occurred in 30% acetic acid solution (190 seconds), followed by the citric–acetic acid mixture. Increasing paracetamol mass extended dissolution time, with saturation reached at 3.5 g. Enhanced solubility was attributed to hydrogen bonding interactions between organic acids and paracetamol molecules. Compared with complex techniques such as solid dispersions or co-amorphous systems, this acid-assisted approach is simple, low-cost, and requires no specialized equipment. These findings highlight the role of weak organic acids as practical solubility enhancers and suggest a promising strategy to improve paracetamol bioavailability and therapeutic effectiveness.
Co-Authors AA Sudharmawan, AA Abd Hakim, Abd Agus, Junaidi Arayan, Miftah Arwadi Sinuraya Aulia, Amanda Aulia, Shelly ayumi, Sheilla Maliza Azizah, Rifka Noor Azzahra, Nabila Batubara, Diva Angelica Amanda Br Manik, Trivena Myta Br Nadeak, Stephani Bintang N. Cahyati, Riska Damanik, Angelica Damanik, Wicha Rosari Dikki Miswanda Dion Awfa Fahmi, Jaman Faradilla, Putri Fitri, Indah Hamasaki, Atom Intan Juwita, Intan Jannah, Nazria Marwatul Jasmidi Jasmidi Jasmidi Kabul, Abdul Hamid Khairahma Khairahmi Khairunisa, Dira Manalu, Anrian Haholongan Manullang, Okto Panca Maulina, Rissah Mendrofa, Bulan Susanti Mustaqiman, Aulia Nur Nasution, Dhea Ananda Nasution, Hafni Indriati Ningsih, Liska Kustria Novrizaldi Wardana Ozeki, Sumio Panjaitan, Teguh Hidayat Prayogo, Wisnu Pulungan, Ahmad Shafwan purba, Gracia Purba, Nesya Maharani Putra, Adhitya Shahrian Rahmadyani, Zaskia Ramadhan, Dwi Sapri Riga, Riga Rini Selly, Rini S, Abd Hakim Safitri, Wulan Dwi Sari, Lidia Mutia Sari, Maya Novita Sari, Trisna Kumala Savika, Anggraini Selly, r Sembiring, Rahel Natalia Sembiring, Rinawati Siahaan, Stephani Yunita Sigalingging, Olivia Gina Ananta Simamora, Astuty Evalina Sitompul, Maysaro Suprapto Suprapto Syafirna, Nada Syahirah, Atikah Nur Tambunan, Ida Mariati Tanjung, Amar Lohot Wardana, Dian Yusfiani, Marnida Zainuddin Muchtar