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All Journal Prosiding Pendidikan Sains Jurnal Pendidikan dan Pembelajaran Kimia (JPPK) JURNAL PENELITIAN SAINTIKA Elkawnie JURNAL PENGABDIAN KEPADA MASYARAKAT Jurnal Pendidikan Kimia Universitas Riau Lantanida Journal Jurnal Pendidikan Kimia (JPKim) Jurnal Inovasi Pembelajaran Kimia (Journal Of Innovation in Chemistry Education) Indonesian Journal of Chemical Science and Technology Jurnal Pengabdian Kepada Masyarakat (JPKM) Tabikpun Journal of The Indonesian Society of Integrated Chemistry

Ahmad Nasir Pulungan

Universitas Negeri Medan

Author-ID : 3037372

Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Education Energy Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Social Sciences Other

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Synthesis of Biodiesel From Rubber Seed Oil with Acid and Base Activated Natural Zeolite Catalyst Tiamina Nasution; Akhir Mauludin Pulungan; Yuli Asih Wiliranti; Junifa Layla Sihombing; Ahmad Nasir Pulungan
Indonesian Journal of Chemical Science and Technology (IJCST) Vol 2, No 2 (2019): July 2019
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v2i2.14001

In this study, biodiesel synthesis was carried out using Z-AH and Z-OH Zeolite catalysts to obtain a cheaper and environmentally friendly process. The catalysts were prepared from Sarulla Indonesian natural zeolite (Z-AS) through a chemical activation process with certain HCl 3 M and NaOH 2 M, then calcined at 500°C with Nitrogen gas for 4 hours to obtain Z-AH ang Z-OH catalyst. The catalysts were characterized by FT-IR and XRD. The conversion of rubber seed oil into biodiesel was carried out at temperature of 30 oC, 60 oC and 90 oC. The ratio of methanol: rubber seed oil is 6: 1 (v / v) and the catalyst concentration used is 1% wt. The XRD and FTIR data show that Z-AS activation increases the crystallinity of zeolite and does not damage the zeolite skeletal structure.The Z-AH catalyst has a better catalytic activity than the Z-OH catalyst with the conversion value of the biodiesel product obtained at 69.79%.

Pengabdian Kepada Masyarakat (PKM) dalam Pengolahan Air Bersih di Desa Sukajadi Feri Andi Syuhada; Ahmad Nasir Pulungan; Ani Sutiani; Hafni Indriati Nasution; Junifa Layla Sihombing; Herlinawati Herlinawati
Jurnal Pengabdian Kepada Masyarakat (JPKM) TABIKPUN Vol. 2 No. 1 (2021)
Publisher : Faculty of Mathematics and Natural Sciences - Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jpkmt.v2i1.23

Keterbatasan pasokan air bersih untuk memenuhi kebutuhan masyarakat menjadi kendala utama yang dialami warga di Desa Sukajadi. Dengan keterbatasan pengetahuan, sarana, prasarana dan ekonomi, warga terus menggunakan air yang tidak sehat untuk kebutuhan rumah tangga. Oleh karena itu, masyarakat sangat perlu diberi pengetahuan dan keterampilan pengolahan air bersih. Kegiatan pengabdian kepada masyarakat (PKM) dalam Pengolahan Air Bersih di Desa Sukajadi bertujuan untuk: 1) meningkatkan pengetahuan tentang air bersih dan budaya hidup bersih, 2) memberikan keterampilan teknologi proses pengolahan air bersih. Tujuan tersebut dicapai dengan kegiatan berupa penyuluhan, pelatihan, dan penerapan teknologi tepat guna untuk mengolah air bersih. Hasil yang dicapai adalah: 1) meningkatnya pengetahuan mitra tentang pentinganya air bersih bagi kesehatan, 2) mitra telah memiliki pengetahuan dan ketrampilan pengolahan air bersih untuk rumah tangga.

Pengembangan Modul Elektronik Terintegrasi Problem Based Learning (PBL) Pada Materi Larutan Elektrolit dan Non Elektrolit Pernando Sitepu; Ahmad Nasir Pulungan
Jurnal Inovasi Pembelajaran Kimia (Journal Of Innovation in Chemistry Education) Vol 3, No 2 (2021): OKTOBER 2021
Publisher : Universitas Negeri Medan

This study uses Research and Development (R&D) research methods, namely developing problem-based chemistry teaching materials on electrolyte and non-electrolyte solutions. Aims to determine the feasibility standard of chemistry teaching materials in accordance with the eligibility criteria for content, language, presentation, and graphics and see student responses to the developed teaching materials. The stages that were passed in the research started from syllabus analysis with 13 revised curriculum, book analysis, design and development of teaching materials, validation of expert teaching materials, and student responses to teaching materials resulting from the development so that problem-based teaching materials were composed of electrolyte and non-electrolyte solution materials that appropriate and in accordance with BSNP criteria.Based on the validation results of teaching materials using a modified BSNP questionnaire, in this questionnaire the aspects assessed include aspects of content feasibility, language feasibility aspects, presentation feasibility aspects, and graphic feasibility aspects. Based on the results of standardization of problem-based modules on electrolyte and nonelectrolyte solution materials by Unimed chemistry lecturers and Chemistry Teachers, overall the average content feasibility obtained a result of 3.48 with valid criteria and no need for revision, for language eligibility the results obtained 3.59 with criteria valid and does not need revision, for the feasibility of the presentation, the result is 3.73 with valid criteria and does not need revision, and for the feasibility of the graphic, the result is 3.60 with valid criteria and does not need revision. This means that the average result is 3.60. Problem-based Modules on electrolyte and nonelectrolyte solutions are valid and do not need to be revised. After the teaching materials are valid, it is recommended to conduct an assessment of students with the aim of seeing the percentage of students' satisfaction level with problem-based teaching materials developed based on aspects of appearance, material aspects, and benefits aspects. The results obtained from 30 respondents, namely the display aspect of 92.67%, the material aspect of 90.5%, and the benefit aspect of 88.17%. So that the average percentage level of student satisfaction with problem-based teaching materials that have been developed is 90.44%. This proves that students like problem-based teaching materials so that teaching materials can be used in chemistry learning as well as reading references for students.

Optimization of Indonesia biodiesel production from rubber seed oil using natural zeolite modification Junifa Layla Sihombing; Ahmad Nasir Pulungan; Poppy Lindawati; Adittiya Prayoga; Intan Ayu Safitri; Clara Nur Wandani; Lastri Anita Silitonga; Ambarwati Ambarwati; Puji Prayugo; Ary Anggara Wibowo
Jurnal Pendidikan Kimia (JPKim) Vol 10, No 2 (2018): August
Publisher : Pascasarjana Universitas Negeri Medan

Abstract: The purpose of this research is to find the optimization process of biodiesel production from rubber seed oil using natural zeolite modification. The method of this research are using 1) Modification of Natural Zeolite Using NH4NO3, 2) Characterization of catalyst using FTIR and XRD, 3) Esterification and transesterification of rubber seed oil at 30oC, 40oC, 50oC and 60oC for 2 hours in each step using H-Zeolite, and 4) Analyzation of liquid product using Gas Chromatography (GC). The result of this research shown that the best conversion of rubber seed oil into methyl ester fatty acid of about 76.43% with Methyl linoleate component reached 38.23% at 60oC. Moreover, the characterization of catalyst revealed that there is no a significant change in terms of mineral content and crystallinity between natural zeolite and its modification which are showed as mordenite with triclinic crystal system. In essence, H-zeolite can optimize the production biodiesel.Keywords:biodiesel; H-zeolite; natural zeolite modification; rubber seed oil

Unveiling ZrO2/natural zeolite catalytic performance on hydrocracking palm oil mill effluent residue Junifa Layla Sihombing; Herlinawati Herlinawati; Ahmad Nasir Pulungan; Agus Kembaren; Gimelliya Saragih; Harmileni Harmileni; Rahayu Rahayu; Ary Anggara Wibowo
Jurnal Pendidikan Kimia (JPKIM) Vol 15, No 2 (2023): August
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v15i2.43324

Palm oil mill effluent (POME) is the largest liquid waste from crude palm oil production. This liquid waste still contains a lot of chemical components, solid deposits, and oil which is dangerous if released directly into the environment. The residual oil and grease components contained in POME can be further extracted and converted into fuel fractions. This study investigates the conversion of residual oil from POME into fuel fractions through hydrocracking. A ZrO2/Sarulla natural zeolite (SNZ) catalyst was used, characterized by a particle size of 1-1.5 µm, a surface area of 73.3 m2/g, a pore volume of 0.161 cc/g, and a pore diameter of 3.35 nm. The effect of catalyst mass was studied, with the total conversion increasing to a certain extent with increasing catalyst mass, however, an increase in coke formation decreased the product yield. The highest gasoline fraction selectivity was obtained with a catalyst mass of 0.09 wt% (~42%), while the kerosene fraction was most obtained with a catalyst mass of 0.15 wt% (~40%). The liquid product with a catalyst mass of 0.15 wt% had the highest HHV of 44.2 MJ/kg, a 12% increase from the HHV of POME oil residue (39.4 MJ/kg). The results demonstrate the potential of using residual oil from POME as a source for fuel production and the use of natural zeolite-based catalysts as hydrocracking catalysts.Keywords: Biofuel; Hydrocracking; Natural zeolite; Oil extracted; Palm oil mill effluent

Pelatihan Pembuatan Hand Sanitizer Berbasis Ekstrak Daun Jelatang (Urtica dioica L.) di MTsN 3 Medan Ahmad Nasir Pulungan; Junifa Layla Sihombing; Putri Faradilla; Dwy Puspita Sari; Zuhairiah Nasution; Mutiara Agustina Nasution; Haqqi Annazili Nasution; Ida Duma Riris; Mhd Fahmi; Nia Veronika; Nurul Hidayah
Jurnal Pengabdian Kepada Masyarakat (JPKM) TABIKPUN Vol. 4 No. 2 (2023)
Publisher : Faculty of Mathematics and Natural Sciences - Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jpkmt.v4i2.117

Pelatihan pembuatan hand sanitizer dengan ekstrak daun jelatang (Urtica dioica L.) dilakukan dalam rangka mendukung gerakan madrasah sehat di MTsN 3 Medan melalui program perilaku hidup bersih dan sehat (PHBS). PHBS dianggap mampu menciptakan lingkungan sekolah yang sehat. Salah satu cara menjaga kebersihan yang paling dasar adalah menjaga kebersihan tangan yang banyak menjadi akses penularan bakteri. Penggunaan hand sanitizer merupakan upaya yang paling sederhana, efektif dan efisien. Penambahan bahan alami seperti ekstrak daun jelatang (Urtica Dioica L.) dapat dimanfaatkan sebagai anti bakteri. Metode yang dilakukan pada kegiatan ini berupa penyuluhan serta pelatihan secara langsung pembuatan produk hand sanitizer dengan ekstrak daun jelatang (Urtica dioica L.). Setelah adanya kegiatan PKM ini, peningkatan pemahaman kelompok mitra terhadap PHBS dan produksi hand sanitizer mengalami peningkatan sekitar 2,86 – 37,90%.

Optimization of the upgrading process of bio-oil from palm fronds: The effect of temperature, catalyst mass ratio, and reaction time Junifa Layla Sihombing; Ahmad Nasir Pulungan; Janter Pangaduan Simanjuntak; Muhammad Irvan Hasibuan; Lisna Efiyanti; Rahayu Rahayu; Ajeng Asri Audi; Muhammad Hadi
Jurnal Pendidikan Kimia Vol. 16 No. 1 (2024): April
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v16i1.52556

The lignocellulosic component contained in palm frond waste has potential as an alternative fuel by converting it into bio-oil through a pyrolysis process. However, bio-oil has poor quality when compared to conventional fuels. Therefore, the Hydrodeoxygenation (HDO) process has been widely developed as a promising way to improve the poor physicochemical properties of bio-oil. In this study, a bimetallic CuO-ZnO catalyst loaded on mordenite zeolite was used as a catalyst for HDO bio-oil from palm fronds. Optimization efforts were made on several parameters that affect the reaction including temperature, catalyst mass, and reaction time. This study aims to improve the quality of bio-oil and determine the effect of variations in reaction parameters on the physicochemical properties of upgraded bio-oil. The optimum condition found was the HDO process with a catalyst mass of 3.5 wt% at 325 °C for 120 min. The physicochemical properties of bio-oil after the upgrading process were successfully improved from those of raw bio-oil. The result is a decrease in water content and total acid number, an increase in C and H content accompanied by a reduction in oxygen content with a degree of deoxygenation reaching 72.9%, and an increase in higher heating value (HHV).

Application of Teams Games Tournament (TGT) Learning Model assisted by Kahoot Media to Interest and Learning Outcomes of Class XI Students on Reaction Rate Material Sitinjak, Nurhalimah; Pulungan, Ahmad Nasir
Jurnal Pendidikan dan Pembelajaran Kimia Vol 13, No 1 (2024): Jurnal Pendidikan dan Pembelajaran Kimia
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstrak: Penerapan Model Pembelajaran Teams Games Tournament (TGT) berbantuan Media Kahoot terhadap Minat dan Hasil Belajar Siswa Kelas XI pada Materi Laju Reaksi. Penelitian ini bertujuan untuk mengetahui hasil belajar, minat belajar dan hubungan minat dengan hasil belajar yang dilakukan di SMA Swasta Dharmawangsa Medan. Desain penelitian ini menggunakan desain kelompok kontrol pretest-posttest. Populasi dalam penelitian ini adalah seluruh siswa kelas XI IPA SMA Swasta Dharmawangsa Medan dan sampelnya adalah kelas XI MIA 2 sebagai kelas eksperimen yang diajar dengan model Teams Games Tournament (TGT) berbantuan Kahoot dan kelas XI MIA 3 sebagai kelas kontrol yang diajar. dengan model Teams Games Tournament (TGT) dibantu kartu yang diambil dengan teknik random sampling. Instrumen yang digunakan dalam penelitian ini adalah instrumen tes berupa soal pilihan ganda dan instrumen non tes berupa angket minat belajar. Hasil penelitian menunjukkan bahwa hasil belajar siswa yang diajar dengan model pembelajaran TGT berbantuan kartu pada materi laju reaksi lebih tinggi dibandingkan dengan hasil belajar siswa yang diajar dengan model pembelajaran TGT berbantuan kartu pada materi laju reaksi (75.00 > 70.00). nilai rata-rata minat belajar kelas eksperimen lebih tinggi dibandingkan kelas kontrol (79 > 74,97). Terdapat korelasi positif antara minat dengan hasil belajar dilihat dari rhitung= 0,744 dengan kategori baik. Kata Kunci: Model Pembelajaran Teams Games Tournament, Kahoot, Kartu, Hasil Belajar, Minat BelajarDOI: 10.23960/jppk.v13.i1.2024.05

Application of the Problem Based Learning (PBL) Assisted by Powtoon Video Media on Student Learning Activities and Outcomes on Periodic System of Elements Material Aryani, widya; Pulungan, Ahmad Nasir
Jurnal Pendidikan dan Pembelajaran Kimia Vol 13, No 1 (2024): Jurnal Pendidikan dan Pembelajaran Kimia
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Application of the Problem Based Learning (PBL) Assited by Powtoon Video Media on Student learning Activities and Outcomes on Periodic System of Elements Material. This research aims to (1) Knowing that the learning outcomes and learning activities of students who are taught with the help of PowerPoint animation video media are higher than the chemistry learning outcomes of students who are taught with the help of PowerPoint media. (2) Knowing that there is a correlation between activities and student learning outcomes.The research population was all class X high school studentsDHARMAWANGSA MEDAN consists of 9 classes, with a purposive sampling method. The results obtained are in (1) The learning results using the right-hand t test obtained tcount > ttable = 3.61 > 1.67, so the learning outcomes of students taught using the PBL model assisted by Powtoon Video Media are higher than the learning outcomes of students taught with the PBL model assisted by Powerpoint Media. (2) Learning activity data shows that the value of tcount > ttable = 1.80 > 1.67, so the learning activities of students taught using the PBL model assisted by Powtoon Video Media are higher than the learning outcomes of students taught using the PBL model assisted by Powerpoint Media in Periodic System of Elements material, (3) the results of the correlation test show that the value of rcount > rtable = 0.73 > 0.36, meaning there is a significant correlation between activities and student learning outcomes taught using the PBL model assisted by Powtoon Video Media in the Periodic System material Element with a coefficient of determination of 54%.Keywords: Problem Based Learning, Powtoon, Learning Outcomes, Learning Activities,Periodic System Of ElementsDOI: 10.23960/jppk.v13.i1.2024.15

PENGARUH PERBEDAAN METODE MELT PROCESSING DAN SISTEM LARUT TERHADAP HASIL GRAFT KOPOLIMERISASI CYCLIC NATURAL RUBBER (CNR) DENGAN GLYCIDYL METHACRYLATE (GMA) Eddiyanto, Eddiyanto; Sipahutar, Rezwan Mulya; Nurfajriani, Nurfajriani; Pulungan, Ahmad Nasir; Herlinawtati, Herlinawati
Lantanida Journal Vol 12, No 2 (2024)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v12i2.26272

Although natural rubber has many good qualities, its commercial uses are limited by its low chemical reactivity and low heat stability. A derivative with better stability, Cyclic Natural Rubber (CNR), has to be chemically modified to increase its usefulness and broaden its range of applications. Investigating the effects of two different methods, the melt processing and solution system on the FTIR spectra of Cyclic Natural Rubber (CNR) graft copolymerization with Glycidyl Methacrylate (GMA) was the aim of this work. Additionally, an evaluation of the effect of Dicumyl Peroxide (DCP) and Benzoyl Peroxide (BPO) initiators on grafting results was carried out. According to FTIR spectrum analysis, the carbonyl ester (C=O) peak at roughly 1721 cm⁻¹, indicating effective grafting, was more pronounced in the melt processing approach than in the solution procedure. This implied that melt processing resulted in higher grafting efficiency. The absorption bands in the C-H stretching region (2860-2921 cm⁻¹) and the C=C stretching area (1672 cm⁻¹) show that the underlying structure of CNR has not degraded. The carbonyl index values for each composition showed that BPO performed better than DCP in the melt treatment method, however DCP as an initiator in the solution system produced a higher grafting efficiency than BPO.

Co-Authors ., Asmidi ., Nurrnalis Adittiya Prayoga Agung Abadi Kiswandono Agus Haryono Agus Kembaren Ajat Sudrajat Ajeng Asri Audi Akhir Mauludin Pulungan Ambarwati Ambarwati Andriayani Ani Sutiani Ary Anggara Wibowo Ary Anggara Wibowo Aryani, Widya Audi, Ajeng Asri Clara Nur Wandani Dewi Syafriani Dimas Ridho Dwi Siswanta Eddiyanto Eddiyanto Fahmi, Jaman Girsang, Ermi Hafni Indriati Nasution Haqqi Annazili Nasution Harmileni Hasibuan, Muhammad Irvan Herlinawati Herlinawati Herlinawtati, Herlinawati Ida Duma Riris Intan Ayu Safitri Irma Syahputri Jamalum Purba Janter Pangaduan Simanjuntak Jasmidi ., Jasmidi Jasmidi Jasmidi Junifa Layla Sihombing Junifa Layla Sihombing Junifa Layla Sihombing Junifa Layla Sihombing Junifa Layla Sihombing Junifa Layla Sihombing, Junifa Layla Juniva Laila Sihombing, Juniva Laila Khairatun Annisa Kurniawan, Ekin Dwi Arif Lastri Anita Silitonga Lisna Efiyanti Lisna Efiyanti malis, Nur Manalu, Elisabet Manurung, MS Mhd Fahmi midi, Jas Moondra Zubir MS Manurung Muhammad Hadi Muhammad Hadi Muhammad Irvan Hasibuan Mutiara Agustina Nst Nia Veronika Nurfajriani Nurfajriani Nurfajriani, Nurfajriani Nurul Hidayah Nurul Hidayat Aprilita Pernando Sitepu Poppy Lindawati Puji Prayugo Putri Ayunicha Putri Faradilla Rahayu Rahayu Rahayu Rahayu Rahayu Rahayu Rahmani, Mei Ramadhan, Dwi Sapri Ratna Sari Dewi Rudi Munzirwan Siregar, Rudi Munzirwan Safitri, Wulan Dwi Saharman Gea Saragih, Gimelliya Sari, Dwy Puspita Shallomita, Grace Sianturi, Irianani Ainung Simanjuntak, Evalina Br Simanjuntak, Janter Pangaduan Simatupang, Patricia Sipahutar, Rezwan Mulya Sirait, Martina Siregar, Nuraini Sitinjak, Nurhalimah Sri Juari Santosa Sutiani, Ani Syahputra, Ricky Andi Syuhada, Feri Andi Takashi Hayashita Tambunan, Kristine Tiamina Nasution Tiamina Nasution Tita Juwitaningsih Trisunaryantr, Wega Triyono . Wardana, Dian Yasir Arafat Hutapea Yuli Asih Wiliranti Yusnidar, Erika Zuhairiah Nasution, Zuhairiah

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