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All Journal Jurnal Sains dan Teknologi Komunikasi Fisika Indonesia Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Jurnal Riset Kimia Jurnal Ilmiah Biosaintropis (Bioscience-Tropic) Jurnal Ilmiah Pertanian Science and Technology Indonesia Martabe : Jurnal Pengabdian Kepada Masyarakat Stannum : Jurnal Sains dan Terapan Kimia Jurnal Pengabdian Masyarakat Teknik Indonesian Journal of Chemical Science and Technology Journal of Applied Materials and Technology Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks Journal of Bioprocess Chemical and Environmental Engineering Science Jurnal Abdi Masyarakat Indonesia Journal of Community Engagement Research for Sustainability Jurnal Sains Materi Indonesia JURNAL REKAYASA KIMIA & LINGKUNGAN
Yelmida Azis
Department Of Chemical Engineering, Faculty Of Engineering, Universitas Riau
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Hydrolysate as an alternative feedstock for furfural production Syelvia Putri Utami; Yoanni Marsha Rezki; Vina Ermalinda; Komalasari; Yelmida Aziz
Jurnal Sains Materi Indonesia Vol. 25 No. 2 (2024): Jurnal Sains dan Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

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Abstract

Furfural has emerged as a value-added chemical product which generated from hemicellulose-base biomass, in the context of hardwood it called as biorefining. Several methods have been developed to produce furfural using both hydrothermal and catalytic processes. In this study, hydrolysate is used as feedstock for generating furfural by using diluted sulfuric acid and aluminium chloride. Temperature and reaction time has been considered as the valuable variable. Hydrolysate was charged with the acid-catalyst for around 90 min at certain temperature. The product analyzed by using fourier transform index refractory and excess bromine method. At this time, the highest yield of furfural for non-catalyst process was achieved at 120 oC for 90 min. Diluted acid solution by hydrochloric acid and AlCl3 1% managed to increase furfural production from hydrolysate in the mild temperature.
Utilization of Bengkalis Beach Sand Silica as Raw Material in the Synthesis of Zeolite 4A Azis, Yelmida; Zahrina, Ida; Fadli, Ahmad; Hazzamy, Muhammad Asyaf
Science and Technology Indonesia Vol. 9 No. 2 (2024): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.2.244-250

Abstract

Zeolite 4A is a porous material that is widely used as an adsorbent, catalyst, membrane, ion exchanger, molecular sieve, etc. As a source of silica in the synthesis of zeolite 4A, silica from natural materials, biomass waste or chemicals has been used. In this research, silica extracted from Bengkalis beach sand (BBS) was used as raw material. The silica content in its oxide form, silicon oxide (SiO2) in BBS reaches 90%. The synthesis of zeolite 4A was carried out using a hydrothermal process, by varying the mole ratio of Si/Al from the reactant sodium silicate to sodium aluminate, namely 1.2:1; 1.4:1; 1.6:1 at reaction temperatures of 100, 110 and 120°C. Based on characterization using X-ray diffraction and an infrared spectrometer, the best conditions were obtained at a mole ratio reactant of 1.6, a reaction temperature of 100°C with a crystallinity percentage reaching 80.97%. Based on SEM-EDX analysis, the zeolite has an agglomerated morphology with a Si/Al ratio of around 1.09. The surface area, pore volume, and pore diameter of the synthesized zeolite were analyzed using a Brunauer-Emmet-Teller (BET) technique, respectively 81.844 m2/g, 0.039 cm3/g, and 3.07 nm.
Edukasi Bahan Kimia Berbahaya sebagai Pengawet Makanan di Kecamatan Tangkerang Timur, Pekanbaru, Riau Al’farisi, Cory Dian; Sunarno, Sunarno; Fadli, Ahmad; Mutamima, Anisa; Azis, Yelmida; Nurfatihayati, Nurfatihayati; Utama, Panca Setia; Suhendri, Suhendri; Habib, Alltop Amri Ya
Jurnal Abdi Masyarakat Indonesia Vol 4 No 5 (2024): JAMSI - September 2024
Publisher : CV Firmos

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54082/jamsi.1331

Abstract

Bahan pengawet adalah sejenis bahan tambahan yang sudah digunakan secara umum oleh masyarakat. Penambahan bahan pengawet pada berbagai jenis makanan memiliki tujuan untuk mencegah tumbuhnya bakteri pembusuk, baik pada bahan mentah maupun produk akhir. Penggunaan bahan pengawet sejauh ini tidak memperhatikan dosis dan jumlah asupan yang ditambahkan sehingga sering menjadi pemicu gangguan kesehatan. Namun banyak produsen makanan yang sering melakukan penyalahgunaan penambahan bahan pengawet bersifat toksik dan karsinogenik ke dalam bahan pangan, sehingga perlu adanya edukasi dan sosialisasi cara mendeteksi secara sederhana zat pengawet yang ada dalam pangan pada masyarakat terutama di Yayasan Al-Anshar. Hal ini karena yayasan Al-Anshar memiliki badan usaha sendiri yang mampu memproduksi berbagai jenis makanan seperti: berbagai jenis roti, bakso, tahu dan makanan ringan lainnya. Kegiatan pengabdian ini diawali dengan edukasi dan sosialisasi mengenai jenis-jenis bahan pengawet pada makanan. Hasil kegiatan menunjukkan bahwa edukasi bahan pengawet pada produk makanan dapat meningkatkan pengetahuan dan pemahaman peserta pelatihan sehingga mampu melakukan analisis dengan metode sederhana dalam mendeteksi bahan pengawet yang berbahaya seperti formalin dan boraks.
Pembuatan Pektin Dari Wortel dan Pemanfaatannya dalam Formulasi Pasta Gigi Al'farisi, Cory Dian; Mutamima, Anisa; Drastinawati, Drastinawati; Yelmida, Yelmida; Siahaan, Daniel Andica; Az Zahra, Alya
Stannum : Jurnal Sains dan Terapan Kimia Vol 7 No 1 (2025): April 2025
Publisher : Department of Chemistry - Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jstk.v7i1.5053

Abstract

Pectin, a complex polysaccharide derivative, is abundantly found in various fruits and vegetables. Due to its gel-forming ability, pectin plays a crucial role in the production of diverse food products, including jam, jelly, fruit preparations for yogurt, fruit juice, and others. The primary aim of this research was to ascertain the yield and extract the pectin content from carrots and investigate the impact of incorporating different concentrations of pectin into toothpaste formulations, comparing them against the SNI 12-3524-1995 standard. In this study, concentrations of pectin in toothpaste formulations were varied at 2.5%, 3%, 3.5%, and 4%. Pectin characteristics, encompassing yield, moisture content, equivalent weight, and methoxyl content, were examined, alongside assessments of toothpaste formulation characteristics, including organoleptic evaluation, pH testing, and spreadability testing. The research findings revealed that 13 grams of dried carrot powder yielded 1.17 grams of pectin, resulting in a 9% yield, 6.7% moisture content, an equivalent weight of 717 g/gmol, and a methoxyl content of 9.3%. Toothpaste testing indicated pH values of 7.63, 7.7, 7.26, and 7.06 for concentrations of 2.5%, 3%, 3.5%, and 4%, respectively. Organoleptic evaluations for each concentration revealed a thick texture, light brown and brown color, and mint and mild mint aromas. Spreadability test results for concentrations of 2.5%, 3%, 3.5%, and 4% were 3.1 cm, 3 cm, 2.8 cm, and 2.8 cm, respectively. While increasing the concentration of carrot pectin did not significantly impact the pH, color, aroma, and texture of the toothpaste formulation, it led to a decrease in spreadability.
The effect of reaction time and oil-to-methanol ratio on the calorific value of biodiesel produced from chicken fat oil Habib, Alltop Amri Ya; Emrinaldi, Tengku; Yolanda, Yogi; Azis, Yelmida
Indonesian Physics Communication Vol 22, No 1 (2025)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.22.1.11-14

Abstract

The energy content of a fuel is represented by its calorific value. When biodiesel combusts in the presence of air or oxygen, the heat released during the combustion process is expressed as the calorific value. This study aims to analyze the effect of reaction time (60, 120, and 180 minutes) and the volume ratio of chicken fat oil-to-methanol (OM) (25:30 and 25:50) in the transesterification process on the calorific value of the produced biodiesel. The transesterification process was conducted using MgO as a catalyst under various reaction times and OM ratios. The produced biodiesel was then analyzed to determine its calorific value as a key fuel quality parameter. The results indicate that a longer reaction time and a higher OM volume ratio lead to an increase in the calorific value. The highest calorific value obtained in this study was 9952 kcal/kg, achieved at a reaction time of 180 minutes and an OM volume ratio of 25:50.
Sintesis ZSM-5 Menggunakan Silika Presipitasi Dari Fly Ash Pabrik CPO Saputra, Rio; Saputra, Edy; Yelmida, Yelmida
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5, No 1 (2018): Wisuda April Tahun 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Palm fly ash is waste in the palm oil industry. Palm fly ash has high content of silica. ZSM-5 is one of synthetic zeolite which used as catalyst. It can be synthesized from silica and alumina using hidrothermal method. Source of silica that can be used to ZSM-5 synthesis are sodium silicate, gelled silica and precipitated silica. the purpose of this research is to synthesis ZSM-5 using precipitated silica hydrothermally. The result was analyzed using FTIR. ZSM-5 can be synthesized using precipitated silica hydrothermally. Based on infrared spectrum,the product synthesis shows four characteristic of ZSM-5 characters.Key words : fly ash, silica, hydrothermal and ZSM-5
Sintesis Hidroksiapatit Dari Precipitated Calcium Carbonate (PCC) Cangkang Telur Ayam Ras melalui Proses Presipitasi Agustiyanti, Rini Dwi; Azis, Yelmida; Helwani, Zuchra
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5, No 1 (2018): Wisuda April Tahun 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Hydroxyapatite is high biactive dan bioafinity ceramic materials. Hydroxyapatite also known osteoconductive, non-toxic, and non-immunogeic. So that there are many application ofhydroxyapatite such as catalyst, fertilizer industry and pharmacy product, protein cromatography application, water treatment, bone and teeth repair. In this research, hydroxyapatite synthesised from PCC of chicken’s egg shell by using precipitation methodwith variation of pH (9, 10, and 11) and stirring speed (200, 250, and 300 rpm). Hydroxyapatite that acquired has been analyze by using FTIR, XRD, SEM-EDX, dan BET. From FTIR analysis best hydroxyapatite acquired by synthesis using pH 11 for stirring speed200 rpm, pH 9 for stirring speed 250 rpm, and pH 11 for stirring speed 300 rpm. From XRD analysis acquired hydroxyapatite with best crystalinity if it comparred with standardhydroxyapatite and smallest crystal size in pH 11 and stirring speed 300 rpm that is 23,07 nm. From SEM-EDX analysis known that acquired hydroxyapatite from synthesis in pH 11and stirring speed 300 rpm has agglomarate shape with particle size 62,5 nm and molar ratio 1,41. The result of BET analysis show that total surface area of hyroxyapatite was 28,406m2/gKeywords: agglomerate, hydroxyapatite, bioctive, stirring, pH, precipitation
Pengaruh Variasi Suhu Sintesis Kristal Hidroksiapatit (HAp) terhadap Diameter Kristal yang Disintesis dari Precipitated Calciul Carbonate (PCC) Kulit Telur Ayam Secara Hidrotermal Faradila, Harfiah; Yelmida, Yelmida; Fadli, Ahmad
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 6 No 1 (2025): Journal of Bioprocess, Chemical, and Environmental Engineering
Publisher : Department of Chemical Engineering, Faculty of Engineering, UNRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jbchees.6.1.40-50

Abstract

In Indonesia, the incidence of bone fractures in 2018 was approximately nine million, with various types of fractures and causes. Hydroxyapatite, Ca₁₀(PO₄)₆(OH)₂ or HAp, is one of the bioceramics commonly used in biomedical applications due to its composition, it has biocompatible and osteoconductive properties and integrates well with bone. The aim of this research is to determine the time required to produce hydroxyapatite (HAp) diameter through the growth of HAp crystals from chicken egg shells. The aim of this study is to examine the effect of reaction temperature (120 and 140°C) and hydrothermal reaction time (1, 3, 4, 5, 7, and 9 hours) on the crystal growth of apatite compounds from Precipitated Calcium Carbonate (PCC) of chicken eggshells. Technically, PCC has advantages such as small particle size (microscale) and homogeneity. HAp is made from PCC and diammonium hydrogen phosphate (NH₄)₂HPO₄ as a phosphate source in the hydrothermal vessel.The HAp produced is characterized using X-ray diffraction (XRD). The HAp crystals obtained are hexagonal in shape with significant precision in the crystalline details of Holly Springs Hydroxyapatite. The good condition process to produced highest crystal diameter of HAp was achieved at a temperature of 140°C, measuring 33.29 nm, with a reaction time of 9 hours. Thus, the higher the reaction temperature and the longer the synthesis time, the larger the HAp crystal diameter
Sintesis ZSM-5 dari Fly Ash Sawit Sebagai Sumber Silika dengan Variasi Nisbah Molar Si/Al dan Temperatur Sintesis Zahrina, Ida; Yelmida, Yelmida; Akbar, Fajril
Jurnal Rekayasa Kimia & Lingkungan Vol 9, No 2 (2012): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

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Abstract

Palm fly ash is biomass/waste in the palm oil industry. Palm fly ash has high content of amorphous silica. ZSM-5 is one of synthetic zeolite which is widely used as catalyst in industries. ZSM-5 has high activity and selectivity to several hydrocarbon conversion reaction. Hence, ZSM-5 is being investigated for the conversion of vegetable oil to hydrocarbon. It can be synthesized from silica and alumina. Sources of silica that can be added to the ZSM-5 synthesis, are sodium silicate, hydrated silica, water glass sol silica, gelled silica, clay, precipitated silicaand calcined silica. ZSM-5 was synthesized free-template by using palm fly ash as silica source. In this research synthesis of ZSM-5 was carried out in autoclave at 18 hours and Na2O/Al2O3 molar ratio by various molar ratio from 30 to 40 and temperature in the range of 150 to 190 oC. The product was then analized using FTIR method. The best ZSM-5 product was obtained at Si/Al molar ratio of 40 and process temperature of 150 oC. Keywords: FTIR, Palm fly ash, ZSM-5
Perengkahan PFAD (Palm Fatty Acid Distillate) Dengan Katalis Zeolit Sintesis Untuk Menghasilkan Biofuel Yelmida, Yelmida; Zahrina, Ida; Akbar, Fajril
Jurnal Rekayasa Kimia & Lingkungan Vol 9, No 1 (2012): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

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Abstract

Palm Fatty Acid Distillate (PFAD) is a by-product of the manufacture of cooking oil. The PFAD has a high potential to be used as raw material for biofuel by catalytic cracking because it is a long-chain hydrocarbon. This research aims to study the influence of time and temperature conversion reaction to catalytic cracking reaction using zeolite catalyst synthesis. The PFAD cracking was taken place in a batch stirred tank reactor at the temperature of 240, 260, 280, 300oC for 60, 80, 100, 120 minutes. The changes in functional groups of cracking products were analyzed using FTIR (Fourier Transform Infra Red), while the analysis of components contained in the product was conducted using GCMS (Gas Chromatography Mass Spectra) analysis. The highest reaction conversion result (98.7%) was obtained at a temperature of 280oC and the reaction time of 100 minutes. The cracking process did not produce biofuels, but the compounds formed were in the form of tridecanoic acid (C13H26NO2), Cholest-8-en-3-ol (C28H48O) and methyl vinyl ketone (C4H6O).Keywords: FTIR, GCMS, PFAD, zeolite synthesys
Co-Authors ', Padil Abd. Rasyid Syamsuri Adam Rafif Aldori Ade Putra Adrian, Melisa Agustiyanti, Rini Dwi Agustiyanti, Rini Dwi Ahmad Fadli Ahmad Fadli Ahmad Fadli Aidil Akbar Aisyah Dewi Ranti, Aisyah Dewi Akbar, Anif Aulia Al'farisi, Cory Dian Alfarisi, Cory Alfarisi, Cory Dian Alfarizi, Cory Dian Alpina, Clara Shinta Asri Amun Amri Aras Mulyadi Ari Wibowo Harahap Audrya, Helsa Az Zahra, Alya Azriyenni Azhari Zakri Bahruddin Bahruddin Bahruddin Bintoro Bintoro Blesvid, Bloomy Caesari Caesari Cece R Chairul Chairul Chairul Chairul Chandra Marzuki Nababan Citra Arimby Dani Pradana Dedeng Hermoyo Delita, Fuji Dewi, Yuli Piana Dhini Octavianty Dian Novita Rahmawaty Dini Aulia Sari Ermal Drastinawati Drastinawati Drastinawati Drastinawati, Drastinawati Edy Saputra Elvi Yenie, Elvi EVELYN EVELYN Evelyn Evelyn Fadli, Deno Febri Fadly Sitohang Fajril Akbar Fajril Akbar Faradila, Harfiah Getra Anugrah Habib, Alltop Amri Ya Hadi Ikrima Hadrian Yonas Sebastian Napitupulu Hazzamy, Muhammad Asyaf Helda Sri Rahayu, Helda Sri Hidayat, Muhammad Ariful Holyness Nurdin Singadimedja Hotni Lamtiar Hutagaol, Nurhidayah I Gusti Bagus Wiksuana Ida Zahrina Idral Amri Ikhma Zurani Imron Sutiono Indah Sri Rahma Ningsih Indra Purnama Irdoni Irdoni Jefry Soclin Sianipar Jenial S Kamarullah, Rahmat Kayabi, Ulhunk Aulia Kendro Prasetyo Khairat, Khairat Komalasari Komalasari Komalasari Komalasari Komalasari Komalasari Komalasari Luckita, Gema Kesa Lucy Rahmawati M Asyraf Hazzamy M. Gherald Erlangga Putra M. Rafi Yunanda Mahdi, Zamratul Miftah Anugrah Mohd. Rafiq Muhammad Alfin Khairullah Muhammad Ichwan Pradana Muhammad Khairil Amri Muhammad Rahman Muhammad Syafiq Izzuddin Muhammad Yahya Muhammad Yusro Annur Mukhlis Khoirudin, Mukhlis Musbar, Al Swendo Mutamima, Anisa Nurfajriani Nurfajriani Nurfatihayati Nuruzzaman Shiqhi Padil Padil Paul Destin Purba Putri M F Putri, Desi Erika Qalbi, Tiffani R, Yolanda. Rafif Sauqi Rahimah Rahimah Ramadhan Ramadhan Rianto Harpendi Rio Saputra Ristandi, Ristandi Romadona, Syahri Rozanna Sri Irianty Rozanna Sri Irianty Rozanna Sri Irianty Ryan Tito Sanredina Sanredina Saputra, Rio Saragih E Sari D. P Shinta Elystia Siahaan, Daniel Andica Silvia Reni Yenti Sisi Oktadira Kalpatari Siti Rahmalia Sri Hidayanti Sri Murda Niati Sri Rezeki Muria Suhendri Suhendri Sunarno Sunarno Syafruddin Syafruddin SYAIFUL BAHRI Syamsu Herman Syelvia Putri Utami Tanjung, Muhamad Adrian Tengku Emrinaldi Toni Arissaputra Utama, Panca Setia Utami Utami Vina Ermalinda Wahyu Lestari Wahyu, Pri Widya Pangestu Wisrayetti Wisrayetti Wisrayetti, Wisrayetti Yeni Kusumawaty Yoanni Marsha Rezki Yoga Deswan Suwary Yolanda, Yogi Yuliatmi Yuliatmi Yunus Olivia Novanto Yunus, Aulia Yusnimar Sahan Zahrina, Zahrina Zakwan Zarkasi, Shoumi Zikri, Ahmed Zuchra Helwani Zuchra Helwani, Zuchra Zultiniar ' Zultiniar Zultiniar Zultiniar, Zultiniar Zultiniar, Zultiniar