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All Journal VALENSI Jurnal Natur Indonesia Gorga : Jurnal Seni Rupa The Journal of Pure and Applied Chemistry Research Jurnal Riset Kimia PROSIDING SEMINAR KIMIA MUDRA Jurnal Seni Budaya Indonesian Journal of Chemistry Dance and Theatre Review: Jurnal Tari, Teater, dan Wayang Batoboh : Jurnal Pengabdian Pada Masyarakat Jurnal Ecolab JURNAL PHOTON PROSIDING: SENI, TEKNOLOGI, DAN MASYARAKAT PROPORSI : Jurnal Desain, Multimedia dan Industri Kreatif Jurnal Riset Teknologi Pencegahan Pencemaran Industri Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks REACTOR : Journal of Research On Chemistry And Engineering Journal of Multidisciplinary Applied Natural Science JURNAL KIMIA SAINTEK DAN PENDIDIKAN Jurnal Natural SAINTI: Majalah Ilmiah Teknologi Industri
Novesar Jamarun
Universitas Andalas
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Transesterification of Palm Oil Catalyzed by CaO/SiO2 Prepared from Limestone and Rice Husk Silica Sri Elfina; Kamisah Delilawati Pandiangan; Novesar Jamarun; Fejri Subriadi; Hafnimardiyanti Hafnimardiyanti; Roswita Roswita
Journal of Multidisciplinary Applied Natural Science Vol. 4 No. 1 (2024): Journal of Multidisciplinary Applied Natural Science
Publisher : Pandawa Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47352/jmans.2774-3047.185

Abstract

In this study, CaO/SiO2 composites were prepared from rice husk silica (RH-SiO2) and limestone from a local company. The composites with different mass ratios of CaO to SiO2 (1:1, 1:2, 1:3, 1:5, and 1:10) were synthesized using the sol-gel technique and characterized using XRF, XRD, and SEM. The composites were then used as catalysts for the transesterification of palm oil, with the main purpose to investigate the effect of catalyst compositions on the percentage of conversion of the oil. The results of XRD and SEM confirm the existence of RH-SiO2 as an amorphous material, and CaO as crystalline material, while the composites are a mixture of amorphous and crystalline phases. The catalysts were then used in transesterification experiments and the percentage of oil conversion was calculated. To confirm the successful conversion of palm oil into fatty acid methyl esters, the products of the reactions were analyzed using GC-MS. The experimental results demonstrated that the composites prepared exhibit catalytic activity, with the highest conversion (60%) achieved using the catalyst with the CaO to SiO2 ratio of 1:3.
The effect of maleic anhydride concentration in manufacturing polypropylene grafted maleic anhydride compatibilizer on the test percent of grafting degree TANJUNG, DENNY AKBAR; JAMARUN, NOVESAR; LUBIS, ROSLIANA
Jurnal Natural Volume 24 Number 2, June 2024
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v24i2.35317

Abstract

The difference in polarity between materials often prevents direct interaction; therefore, a compatibilizer is required to facilitate reactions between polar and non-polar substances. This study aims to investigate the effect of maleic anhydride (MA) concentration on the grafting process of MA onto polypropylene (PP) chains, using benzoyl peroxide (BPO) as an initiator. The blending method employing an internal mixer was used to combine the materials, and the degree of grafting was determined via titration, with three replicates performed for accuracy. The results indicated that the highest grafting degree, 10.28%, was achieved at a composition of 86% PP, 11% MA, and 3% BPO. Fourier Transform Infrared (FTIR) spectroscopy analysis of polypropylene grafted with maleic anhydride (PP-g-MA) revealed new absorption peaks at wavenumbers 1707 cm and 1162 cm. Furthermore, increasing the concentration of maleic anhydride did not significantly affect the grafting degree. This study provides valuable insight for the development of PPg-MA compatibilizers.
Synthesis and Characterization of Hydroxyapatite/Alginate Composites: Study of pH and Sintering Influenced on the Structural, Morphological, and Clindamycin Release Behavior Wulandari, Wulandari; Islami, Dini Muthi'ah; Jamarun, Novesar; Wellia, Diana Vanda; Emriadi, Emriadi
Indonesian Journal of Chemistry Vol 24, No 2 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.84558

Abstract

The hydroxyapatite/alginate (HAp/Alg) composite was synthesized using an in-situ precipitation route. The effect of pH (8, 9, 10, and 11) and calcination temperature (300, 500, 700, and 900 °C) were studied by characterization techniques such as X-ray diffraction (XRD), Fourier-transform infrared (FTIR), and scanning electron microscopy with energy-dispersive X-ray (SEM with EDAX). XRD results show the hexagonal crystal system of HAp for each pH value and the biphase (HAp and whitelockite) for the sintering temperature at 700 and 900 °C. The FTIR spectra show no impurity peaks. SEM images revealed spherical-like (HAp/Alg-11) and flake-like (HAp/Alg-900) particles with good homogeneity, size, and shape that could be notable for biomedical utilization, such as drug delivery material. Drug loading and release ability of pure HAp, HAp/Alg-11, and HAp/Alg-900 composites have been investigated with clindamycin hydrochloride as the drug model. The maximum clindamycin HCl release from HAp, HAP/Alg-11, and HAp/Alg-900 reached 74.48, 92.75, and 69.65% in the 8th hour. HAp/Alg-11 has the highest release because it has the largest surface area of 162.584 m2/g. Antibacterial test results showed HAp/Alg-11 has antibacterial activity against Staphylococcus aureus and Escherichia coli, confirming that HAp/Alg-11 composite has the potential to be applied as drug delivery.
Effect of Temperature on Synthesis of Hydroxyapatite/Chitosan Composite Using the In-Situ Method as a Heavy Metal Adsorbent Jamarun, Novesar; Amirullah, Tri Yupi; Syukri, Syukri; Prasejati, Arika; Wulandari, Wulandari; Caniago, Sintia; Tricahyani, Nabiila Ayyu
Indonesian Journal of Chemistry Vol 25, No 1 (2025)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.93816

Abstract

Removing hazardous non-organic waste containing heavy metals like copper and lead is crucial for environmental protection. Adsorption offers a promising solution, with hydroxyapatite (HAp) serving as a biocompatible adsorbent due to its active surface area. However, its mechanical limitations necessitate enhancement through compositing with chitosan (CTS), a natural biopolymer. This study synthesized hydroxyapatite from cuttlefish bone as a calcium source, while chitosan was extracted from shrimp shells. The hydroxyapatite/chitosan (HAp/CTS) composites were prepared in situ at varying temperatures (55, 60, 65, 70, and 75 °C). The composites were characterized using FTIR, XRD, SEM, and SAA. The result indicated successful integration of HAp and CTS, with a crystallite size of 13.82 nm in the 65 °C composite. Based on SEM-EDS analysis, the HAp/CTS 65 °C morphology was agglomerated chunk particles with a Ca/P ratio of 1.61. The highest adsorption capacity value is found in the HAp/CTS 65 °C composite for both ions, 1.9979 mg/g for Cu2+ ions and 0.9965 for Pb2+ ions. The reusability test results of the HAp/CTS 65 °C composite succeeded up to two cycles. This research proves that the adsorption of Cu2+ and Pb2+ ions by HAp/CTS composite adsorbent has been successfully carried out.
Assessing the water quality in the Timbalun river watershed, Padang City, West Sumatra, Indonesia HAR, RUSLI; TANJUNG, DENNY AKBAR; JAMARUN, NOVESAR
Jurnal Natural Volume 25 Number 1, February 2025
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v25i1.42009

Abstract

The purpose of this study is to assess water quality, specifically pH, conductivity, total dissolved solids (TDS), salinity, and turbidity. The research utilizes quantitative methods and covers 15 sampling points across the Timbalun River basin in Padang City, West Sumatra, Indonesia. Samples were measured based on several parameters, with three repetitions for accuracy. The testing took place from August to September 2024. The results showed that some water quality parameters, such as pH and total dissolved solids, met the standards outlined by Ministry of Health Regulation No. 2 of 2023. However, other parameters, including salinity, conductivity, and turbidity, did not meet the specified thresholds. It is essential to implement treatment measures to ensure the water meets the required standards for its intended use.
Pembuatan Teh Daun Kelor untuk Peningkatan Ekonomi Masyarakat di Kecamatan Ulakan Tapakis, Padang Pariaman Matlal Fajri Alif; Yulizar Yusuf; Emriadi Emriadi; Deswati Deswati; Mai Efdi; Novesar Jamarun; Syukri Arief; Adlis Santoni; Bustanul Arifin; Suryati Suryati; Yetria Rilda; Safni Safni; Zilfa Zilfa; Olly Norita Tetra
Warta Pengabdian Andalas Vol 31 No 4 (2024)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jwa.31.4.682-688.2024

Abstract

The Moringa plant, a tropical species, exhibits prolific growth and is abundantly present in Indonesia and other tropical regions worldwide. An extended lifespan, continuous flowering, and a high tolerance for elevated temperatures characterize it. Utilizing its components, including leaves, bark, seeds, and roots, this multifaceted plant is renowned for its therapeutic properties. The plant's antioxidants and various nutrients, including vitamins and minerals (iron, magnesium, vitamin B6, vitamin B2, vitamin C, and vitamin A), have led to studies on the plant's potential health benefits. In order to develop the local economy in Ulakan village, Padang Pariaman Regency, Moringa plants were processed by using the plant leaves to manufacture herbal tea, which can then be sold. This community service program was significant given the widespread presence and ease of cultivation of Moringa plants within the local region. The program involved the planning and selection of the activity site, the implementation of training sessions, and the assessment of the program's outcomes. The result of this community engagement initiative was the demonstrated interest of many participants in producing Moringa leaf tea.
Effect of Sodium Citrate and Urea as Additive on the Synthesis of Hydroxyapatite from Blood Cockle Shells: Kinetics and Adsorption Isotherms Study of Coomassie Brilliant Blue Putri, Dhea Rahmanda; Jamarun, Novesar; Septiani, Upita; Sisca, Vivi
Indonesian Journal of Chemistry Vol 25, No 4 (2025)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.102465

Abstract

Hydroxyapatite (HAp) was synthesized from blood cockle shell waste by the sol-gel method, incorporating sodium citrate and urea as additives for Coomassie brilliant blue (CBB) adsorption. The synthesis included HAp without additives (HAp 1) and with 30 g/L of urea and varying sodium citrate concentrations of 0 (HAp 2), 0.1 (HAp 3), 0.2 (HAp 4), 0.3 (HAp 5), 0.4 (HAp 6), and 0.5 (HAp 7) g/L. HAp 4 showed the highest adsorption capacity at 96.60 mg/g. FTIR analysis of HAp 4 revealed adsorption bands for O−H and PO43− groups. XRD analysis indicated a crystal size of 24.55 nm with low crystallinity. SEM-EDS analysis showed a Ca/P ratio of 1.28, with an irregular shape due to agglomeration and an average particle size of 1.16 µm. SAA analysis found a surface area of 107.18 m2/g, a pore size of 12.55 nm, and a pore volume of 0.36 cm3/g. HAp 4 followed the Langmuir and pseudo-second-order isotherm models in CBB adsorption and demonstrated five-time reusability, proving it to be an effective adsorbent for CBB dyes.
PELATIHAN INSTRUMEN MUSIK TRADISIONAL MINANGKABAU DI MAN 2 GUNUNG PADANGPANJANG Darmansyah, Darmansyah; Jamarun, Novesar; Firdaus, Firdaus; Arifin, Indra
Batoboh Vol 1, No 2 (2016): Batoboh -Jurnal Pengabdian Pada Masyarakat
Publisher : Institut Seni Indonesia Padangpanjang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26887/bt.v1i2.159

Abstract

Kesenian tradisional berfungsi memperkuat kebudayaan nasional dan memperkuat identitas bangsa. Agar kesenian tradisional bisa bertahan dari perkembangan zaman, maka diperlukan alih generasi. Salah satu bentuk alih generasi adalah pelatihan alat musik tradisi dilingkungan sekolahmenengah MAN 2 Gunung Padangpanjang.Kegiatan alih generasi kesenian tradisi dilakukan dalam kegiatan ekstra kurikuler kesenian disekolah tersebut. Permasalahan yang diangkat adalah kurangnya literatur kesenian tradisi dan terbatasnya tenaga pelatih yang dibutuhkan dalam kegiatan ekstra kurikuler kesenian disekolah menengah. Metode pelatihan yang dipakai adalah menggunakan metode imited singing yaitu melatih dengan mencontohkan langsung cara memainkan alat musik tradisi, dan siswa menirukannya. Melalui pelatihan ini diharapkan siswa-siswa sekolah menengah mengenal kesenian tradisional, dapat memainkan alat musik tradisi, sehingga dapat menumbuhkan rasa suka dan meningkatkan kepedulian siswa-siswa pada kesenian tradisi sebagai milik mereka yang harus dijaga dan dipertahankan. Kata kunci; kesenian tradisional,pelatihan alat musik tradisi
Sintesis Precipitate Calsium Carbonat Sebagai Filler Pada Plastik Ramah Lingkungan Sri Elfina; Novesar Jamarun; Akmal Djamaan
REACTOR: Journal of Research on Chemistry and Engineering Vol. 1 No. 1 (2020)
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/reactor.v1i1.4

Abstract

Limestone is a mineral which is very abundant in Indonesia, especially in West Sumatra. Limestone is synthesized for making Precipitate Calcium Carbonate as a filler in plastics. The results of studies conducted on Precipitate Calcium Carbonate fillers from limestone based on X-RD, FTIR and SEMEDX analysis results, it can be concluded that the compound synthesized from limestone CaO is Precipitate Calcium Carbonate with aragonite and calcite crystal types. While the BET test showed a specific surface area of Precipitate Calcium Carbonate with a value of 7.315 m2 / g. Environmentally friendly plastic surfaces with the addition of Precipitate Calcium Carbonate filler were characterized using AFM obtained Rq value of 0.43 µm.
KAJIAN AKTIVITAS ANTI OKSIDAN PADA BAHAN ALAM DENGAN MENGGUNANAKAN 1,1-DIFENIL-2-PIKRILHIDRAZIL (DPPH) Syukri Arief; Risma Sari; Novesar Jamarun; Sumaryati Syukur
SAINTI: Majalah Ilmiah Teknologi Industri Vol. 16 No. 2 (2019)
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/

Abstract

Penelitian ini bertujuan untuk mengetahui potensi anti oksidan yang terdapat pada bahan alam.Uji aktivitas antiantioksidan ini dilakukan pada beberapa bahan alam atau tumbuhan umum yang telah dikenal dan digunakan secara turun temurun oleh masyarakat Indonesia. Pengujian aktivitas antioksidan dilakukan dengan metoda DPPH menggunakan parameter IC50 dan sampel bahan alam yang digunakan adalah virgin coconut oil (VCO) dari tanaman kelapa, Daun Tanjung dan ekstrak daun salam. Uji aktivitas antioksidan menunjukkan bahwa sampel bahan alam yang digunakan memiliki aktivitas antioksidan yang kuat, didapatkan nilai IC50 berada diantara 50-100 ppm
Co-Authors -, Yulfitrin Adlis Santoni Ahmad Hafizullah Ritonga Aju Deska Akmal Djamaan Amirullah, Tri Yupi Anggresani, Lia Arifin, Indra Aritonang, Barita Arizal Firmansyah Asril Asril Boy Isfa Boy isfa Bustanul Arifin BUSTANUL ARIFIN Caniago, Sintia Cici Wulandari DARMANSYAH . Denny Akbar Tanjung Denny Akbar Tanjung Deswati Deswati Didik Prasetyoko Edy Suisno Emriadi - Fachry Abda El Rahman Fadhilatul Khaira Fejri Subriadi Firdaus Firdaus G Gunawarman, G Giovani Giovani Hafnimardiyanti Hafnimardiyanti Hamzah Hamzah Hamzah Hamzah Hamzar Suyani HAR, Rusli Heri Satria Hermansyah Aziz Hermawan, Budi Ilim Ilim Islami, Dini Muthi'ah Iswandi Iswandi Kamisah Delilawati Pandiangan Kamisah Delilawati Pandiangan Lia Anggresani Lili Suparli S.Sn., M.Sn Lisa Utami Lisa Utami Mai Efdi Mansur Halilintar Matlal Fajri Alif Nabiila Ayyu Trycahyani Nanda Raudhatil Jannah Navisha Yustitia Norman Ferdinal Olly Norita Tetra Prasejati, Arika Putri, Dhea Rahmanda R.M PRAMUTOMO R.Y. Perry Burhan, R.Y. Perry Restina Bemis Restina Bemis, Restina Reza Audina Putri Risma Sari Rosliana Lubis Rosta Minawati Roswita Roswita Rycce Sylviana Pratikha Rycce Sylviana Pratikha Safni Safni Selfa Dewati Samah Selvi K asman Sisca, Vivi Sri Elfina Sri Elfina Sri Elfina Suarnikan Hulu Sumaryati Syukur Sumaryati Syukur Surya Darma Suryati Susas Rita Loravianti Syukri - Syukri - Syukri Arief Syukri Arief Syukri Syukri Tanjung, Denny Akbar Tricahyani, Nabiila Ayyu Trio Saputra Upita Septiani Vivi Sisca Vivi Sisca Wasinton Simanjuntak Wellia, Diana Vanda Wulandari Wulandari Yetria Rilda Yulfitrin - Yuli Yetri Yulia Eka Putri, Yulia Eka Yulidar Laila Safitri Yulizar Yusuf Yundari, Yundari Zetra, Yulfi Zilfa Zilfa