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All Journal Jurnal Pendidikan dan Pembelajaran Kimia (JPPK) Jurnal Riset Kimia Jurnal SOLMA Eksakta : Berkala Ilmiah Bidang MIPA Sainstek : Jurnal Sains dan Teknologi Indonesian Journal of Chemical Science and Technology Jurnal Wawasan Pendidikan Journal of Environment and Sustainability Education
Zubir, Moondra
Unknown Affiliation
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 Physics Other

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Effect of Sugar Addition on the Electric Current Strength of Mixtures with Vinegar, Lime Extract, Coffee, Salt Solution, and 70% Alcohol Wardana, Dian; Ramadhan, Dwi Sapri; Fahmi, Jam'an; Safitri, Wulan Dwi; Siregar, Ida Cathy Everyanti; Silalahi, Sarina Septiani; Zubir, Moondra; Siregar, Nurdin
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.v8i2.70611

Abstract

This study aims to examine the electric current strength of sugar mixed with various electrolyte and non-electrolyte solutions. The research employed an experimental approach using vinegar, lime extract, coffee solution, salt solution, and 70% alcohol combined with sugar solutions. A battery system and a digital multimeter were utilized to measure the resulting current in each mixture. The findings indicate that increasing the amount of sugar leads to a reduction in current strength, whereas decreasing the sugar content results in a higher current output.
Influence of EM4 Inoculum on Biogas Yield and pH Dynamics in Lettuce and Cabbage Waste Fermentation Ramadhan, Dwi Sapri; Safitri, Wulan Dwi; Wardana, Dian; Fahmi, Jam'an; Zubir, Moondra; Andini, Ayu; Simamora, Elisabeth; Limbong, Julian; Sihotang, Pelita; Husna, Wiki Nadia; Siregar, Nurdin
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.v8i2.70612

Abstract

Biogas production from vegetable waste offers a practical pathway for reducing organic residues and supporting small-scale renewable energy systems. This study investigates the influence of EM4 inoculum on gas accumulation and pH dynamics during an 8-day batch fermentation of lettuce and cabbage waste. Four reactors were prepared containing 200 g vegetable waste and 200 mL water with or without 30 g EM4. Gas accumulation was quantified by balloon circumference at day 2, day 4, day 6 and day 8 and converted to volume using geometric calculations. Lettuce generated the highest peak volumes with maximum values exceeding 330 cm³ while cabbage produced less than 60 cm³ under comparable conditions. pH trajectories showed that cabbage plus water decreased from pH 7 to pH 6 whereas lettuce plus water increased from pH 7 to pH 8. Reactors containing EM4 stabilised at pH 6 throughout the fermentation indicating inoculum-supported buffering. These results demonstrate that substrate characteristics strongly influence early-stage gas formation and that EM4 moderates pH fluctuations even under uncontrolled ambient conditions. The findings provide initial evidence that lettuce is a more degradable feedstock than cabbage and emphasise pH regulation as a key requirement for improving methane-oriented biogas performance in simple batch systems.
Effect of Organic and Inorganic Compounds on the Conductivity of Salt Solutions Safitri, Wulan Dwi; Wardana, Dian; Ramadhan, Dwi Sapri; Fahmi, Jam'an; Zubir, Moondra; Purba, Sunita Karin; Puandra, Esti Miska; Siregar, Nurdin
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.v8i2.70635

Abstract

This study examines the effects of selected organic and inorganic compounds on the electrical conductivity of salt solutions. Organic substances (sugar, coffee, tea, and a surfactant-based cleaner) and inorganic additives (ammonium chloride in cough medicine, povidone–iodine, and carbonated beverage) were mixed with salt solutions at varying concentrations to evaluate their influence on ion availability and mobility. The results show that conductivity increases proportionally with salt concentration, confirming that ion content is the primary factor governing charge transport. Inorganic ionic additives significantly enhanced conductivity by releasing additional ions into the solution, whereas non-ionic organic compounds consistently reduced conductivity at low salt levels by diluting ionic species and hindering ion mobility. Conductivity in organic mixtures increased only when salt concentration became dominant. These findings highlight the contrasting mechanisms of organic and inorganic additives in modifying electrolyte behavior and provide useful insight for chemistry education and simple electrochemical analysis.
Analysis of the Effect of Varying Concentrations of Strong Acids (HCl) and Weak Acids (CH3COOH) with Mixing of Bases (Detergent) on the Temperature Increase of the Reaction Results Fahmi, Jam'an; Ramadhan, Dwi Sapri; Wardana, Dian; Safitri, Wulan Dwi; Zubir, Moondra; Siregar, Nurdin; Br Sebanyang, Resi Mai Linda Etaminta; Br Napitupuli, Monika Shinta Kasih; Lumbantoruan, Sifra H.R
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.v8i2.70670

Abstract

Neutralization reactions between acids and bases are generally exothermic processes that release heat because of water formation from H⁺ and OH⁻ ions. This study aims to investigate the effect of varying concentrations of a strong acid (HCl) and a weak acid (CH₃COOH) on the temperature increase produced when these acids are reacted with a detergent-based alkaline material. Experiments were conducted using three acid concentrations—0.1 M, 0.3 M, and 0.5 M—each mixed with 3 g, 5 g, and 7 g of detergent in a reaction volume of 25 mL. The results indicate that increasing acid concentration correlates positively with greater temperature elevation. The largest temperature increase, 5.7°C, was observed in the reaction between 0.5 M HCl and 7 g of detergent, whereas the lowest increase, 0.5°C, occurred in the reaction between 0.1 M CH₃COOH and 3 g of detergent. Differences in ionization strength between strong and weak acids significantly influence the amount of heat released during neutralization. These findings demonstrate that both acid strength and base mass play important roles in determining the exothermic energy output of acid–base reactions.
Pemberdayaan Kelompok Tani melalui Inovasi Pupuk Organik untuk Meningkatkan Pendapatan BUMDes di Sibolangit Agus, Junaidi; Zubir, Moondra; Suprapto, Suprapto; Sinuraya, Arwadi; Ashari, Muhammad; Rahmaniar, Rahmaniar; Lubis, Aulia Madjid; Alexcandra, Hisar
Jurnal SOLMA Vol. 14 No. 3 (2025)
Publisher : Universitas Muhammadiyah Prof. DR. Hamka (UHAMKA Press)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22236/solma.v14i3.20144

Abstract

Background: Limbah peternakan, khususnya kotoran sapi, menjadi permasalahan utama bagi kelompok tani di Kecamatan Sibolangit karena volumenya yang besar dan belum dimanfaatkan secara optimal. Kondisi ini menimbulkan pencemaran lingkungan sekaligus pemborosan sumber daya yang seharusnya memiliki nilai ekonomi. Sementara itu, BUMDes sebagai motor penggerak ekonomi desa belum mampu mengelola potensi tersebut secara berkelanjutan. Penelitian ini bertujuan untuk memberdayakan kelompok tani melalui inovasi pengolahan limbah peternakan menjadi pupuk organik dalam rangka meningkatkan pendapatan BUMDes. Metode: Metode pelaksanaan menggunakan pendekatan komprehensif melalui kombinasi penyuluhan, pelatihan berbasis praktik langsung, konsultasi teknis, serta pendampingan kelembagaan dengan dukungan observasi, wawancara, FGD, dan kuesioner. Hasil: Hasil kegiatan menunjukkan terbentuknya unit usaha pupuk organik di BUMDes dengan kapasitas produksi 2–3 ton per bulan. Evaluasi capaian menunjukkan peningkatan pengetahuan mitra sebesar 65% dan keterampilan praktis 78% berdasarkan perbandingan pre-test dan post-test. Produk pupuk organik yang dihasilkan memenuhi standar kualitas SNI dan mampu mengurangi volume limbah hingga 80% serta menurunkan pencemaran air tanah. Secara ekonomi, program ini memberikan tambahan pendapatan signifikan bagi BUMDes dan kelompok tani, sekaligus membuktikan efektivitas pemberdayaan berbasis inovasi limbah dalam mendukung pembangunan desa berkelanjutan.
Pemanfaatan Pucuk Tebu Dan Kotoran Ternak Menjadi Kompos Organik Kaya Nutrisi Zubir, Moondra; Junaidi, Agus; Miswanda, Dikki; Fahmi, Jaman; Lubis, Ali Hamzah; Pratama, Adryansyah Anugrah; Anggita, Nur Anisa
Jurnal SOLMA Vol. 15 No. 1 (2026)
Publisher : Universitas Muhammadiyah Prof. DR. Hamka (UHAMKA Press)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22236/solma.v15i1.22304

Abstract

Background: Kegiatan pengabdian kepada masyarakat ini bertujuan meningkatkan pengetahuan, keterampilan, dan kemandirian masyarakat Desa Banyumas dalam memanfaatkan limbah pucuk tebu dan kotoran ternak menjadi kompos organik melalui penerapan teknologi tepat guna. Metode: Program dilaksanakan melalui pendidikan masyarakat, pelatihan, difusi teknologi, dan pendampingan, dengan introduksi mesin pencacah pucuk tebu serta praktik pembuatan kompos berbasis bahan lokal. Hasil: Hasil kegiatan menunjukkan adanya peningkatan pemahaman masyarakat mengenai pengelolaan limbah pertanian, meningkatnya efisiensi proses pencacahan bahan baku, dan terselenggaranya praktik pengomposan yang lebih terstruktur. Program ini berkontribusi positif terhadap pengurangan limbah pertanian dan membuka peluang pemanfaatan kompos organik bagi kebutuhan pertanian masyarakat. Ke depan, evaluasi mutu kompos secara laboratorium dan pendampingan pemasaran masih diperlukan agar program benar-benar berkelanjutan
Trends and hotspots in environmental education research: Insights from a comparison of Indonesia and USA Prayogo, Wisnu; Putra, Riansyah; Atika, Liana; Trimailuzi, Trimailuzi; Fitria, Laili; Fatahillah, Al; Estim, Abentin; Sarwa, Sarwa; Darwin, Darwin; Zubir, Moondra; Awfa, Dion; Siregar, Januar Parlaungan; Anggamulia, Muh. Ilham; Azizah, Rifka Noor
Journal of Environment and Sustainability Education Vol. 4 No. 2 (2026)
Publisher : Education and Development Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62672/joease.v4i2.120

Abstract

Environmental education plays a critical role in shaping awareness, sustainable behavior, and civic responsibility. Despite the global growth of environmental education research, comparative analyses between countries with different socio-political and academic contexts remain limited. This study aims to examine the research landscape and thematic evolution of environmental education in Indonesia and the USA. A systematic bibliometric and thematic analysis was conducted on WoS publications from 1975–2025. The study integrates PRISMA-based systematic screening with bibliometric mapping using VOSviewer, enabling transparent article selection while revealing structural relationships among keywords, institutions, and research themes. A total of 812 articles were included after screening and eligibility assessment. The results reveal clear contrasts in research focus and collaboration structures. In the USA, dominant themes include pro-environmental behavior, science education, and urban green spaces, supported by dense institutional collaboration networks led by the University of Florida, Stanford, and Cornell. In contrast, Indonesian environmental education research emphasizes health, sanitation, education, and slum communities, with relatively limited inter-institutional collaboration. Keyword co-occurrence analysis indicates that while global clusters center on “environmental education” and “students,” Indonesian studies integrate context-specific topics such as “COVID-19,” “slums,” and “coastal communities.” This study contributes to environmental education knowledge mapping by providing a systematic cross-national bibliometric comparison that clarifies thematic priorities, collaboration patterns, and emerging research directions. The findings also support SDG-aligned research and policy development, particularly SDG 4.7 (education for sustainable development) and SDG 13 (climate action), by identifying opportunities to strengthen international collaboration and diversify thematic research agendas in environmental education.
Optimalization of Holes Variation to Improve the Performance of Catalytic Converter from Waste Pulp and Rice Husk Ash Jahro, Iis Siti; Zubir, Moondra; Faradilla, Putri; Jasmidi, Jasmidi; Nursanni, Banu
Jurnal Riset Kimia Vol. 17 No. 1 (2026): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v17i1.857

Abstract

The agricultural wastes in the form of rice husk ash, manufacturing solid wastes consisting of pulp grits, dregs, and biosludge as well as motor vehicle exhaust gases containing carbon monoxide, hydrocarbons and carbon dioxide are pollutants that endanger humans and other living things. In fact, the mineral content in pulp solid waste and rice husk ash can be converted into catalytic converters that absorb and convert pollutants from vehicle flue gases so that the amount released into the air is decreased. Therefore, the use of catalytic converters in motor vehicle exhaust is one of the solutions to reduce the air pollution. The ratio of zeolite weight from rice husk ash to pulp solid waste and the number of holes in the catalytic converter are important factors that can affect the performance and mechanical properties of the catalytic converter. The catalytic converter with a zeolite weight ratio of rice husk ash to pulp solid waste at 4:5 and a number of holes at 8 has an absorption power of carbon monoxide (CO), hydrocarbon (HC) and carbon dioxide (CO2) gases of about 54.83; 71.19 and 36.95%, respectively, with a conversion power indicated by an increasing oxygen content in the flue gas by 23.81%.
Co-Authors AA Sudharmawan, AA Abd Hakim, Abd Agus Junaidi Agus, Junaidi ALEXCANDRA, HISAR Anggamulia, Muh. Ilham Anggita, Nur Anisa Arayan, Miftah Arwadi Sinuraya Atika, Liana Aulia, Amanda Aulia, Shelly Ayu Andini ayumi, Sheilla Maliza Azizah, Rifka Noor Azzahra, Nabila Batubara, Diva Angelica Amanda Br Manik, Trivena Myta Br Nadeak, Stephani Bintang N. Br Napitupuli, Monika Shinta Kasih Br Sebanyang, Resi Mai Linda Etaminta Br Sipahutar, Desy Meriani Cahyati, Riska Damanik, Angelica Damanik, Wicha Rosari Darwin Darwin Dikki Miswanda Dion Awfa Estim, Abentin Everyanti, Ida Cathy Fahmi, Jam'an Fahmi, Jaman Faradilla, Putri Fatahillah, Al Fitri, Indah Fitria, Laili Hamasaki, Atom Husna, Wiki Nadia Iis Siti Jahro Intan Juwita, Intan Jannah, Nazria Marwatul Jasmidi Jasmidi Jasmidi Kabul, Abdul Hamid Khairahma Khairahmi Khairunisa, Dira Limbong, Julian Lubis, Ali Hamzah Lubis, Aulia Madjid Lubis, Ghania Dhia Ulhaq Lumbantoruan, Sifra H.R Manalu, Anrian Haholongan Manullang, Okto Panca Manullang, Riska Greselia Maulina, Rissah Mendrofa, Bulan Susanti Muhammad Ashari Muhammad Luthfi Mustaqiman, Aulia Nur Nainggolan, Lidya Revalina Nasution, Dhea Ananda Nasution, Hafni Indriati Ningsih, Liska Kustria Novrizaldi Wardana Nurdin Siregar Nursanni, Banu Ozeki, Sumio Panjaitan, Teguh Hidayat Pratama, Adryansyah Anugrah Prayogo, Wisnu Puandra, Esti Miska Pulungan, Ahmad Shafwan purba, Gracia Purba, Nesya Maharani Purba, Sunita Karin Putra, Adhitya Shahrian Putra, Riansyah Putri Faradilla Rahmadyani, Zaskia Rahmaniar Rahmaniar, Rahmaniar Ramadhan , Dwi Sapri Ramadhan, Dwi Sapri Riga, Riga Rini Selly, Rini S, Abd Hakim Safitri, Wulan Dwi Sagala, Novitri Yolanda Sari, Lidia Mutia Sari, Maya Novita Sari, Trisna Kumala Sarwa, Sarwa Savika, Anggraini Selly, r Sembiring, Rahel Natalia Sembiring, Rinawati Siahaan, Stephani Yunita Sigalingging, Olivia Gina Ananta Sihotang, Pelita Silalahi, Sarina Septiani Simamora, Astuty Evalina Simamora, Elisabeth Siregar, Ida Cathy Everyanti Siregar, Januar Parlaungan Siregar, Koriatul Jannah Sitompul, Maysaro Suprapto Suprapto Syafirna, Nada Syahirah, Atikah Nur Tambunan, Ida Mariati Tanjung, Amar Lohot Trimailuzi, Trimailuzi Wardana, Dian Yusfiani, Marnida Zainuddin Muchtar