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All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Seminar Nasional Teknik Kimia Kejuangan CHEMPUBLISH JOURNAL JOURNAL OF EARTH ENERGY ENGINEERING JRST (Jurnal Riset Sains dan Teknologi) Journal of Bioprocess Chemical and Environmental Engineering Science Jurnal Abdi Masyarakat Indonesia Jurnal Pengabdian Masyarakat Waradin Journal of Engineering Science and Technology Management
Idral Amri
Universitas Riau
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 Public Health Social Sciences Other

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Simulasi Reaktor Elektrokoagulasi Plate Column Berpengaduk Secara Kontinu Berbasis CFD Pada Pengolahan Limbah Cair Kelapa Sawit Amelisa, Tika; Amri, Idral; Sunarno, Sunarno
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.6.1.13-25

Abstract

Palm oil mill effluent continues to increases in line with the increase in palm oil production in Indonesia. Therefore, another alternative technology is needed such as the continuous stirred plate column electrocoagulation. Many laboratory scale studies have been carried out. CFD simulation is used as an advanced technology in treating palm oil mill effluent. The objective for this study is to Obtain optimum equipment design conditions for an electrocoagulation reactor using CFD, see the phenomena that occur due to the influence of flow rate variables and electrode distance, and see the trajectory of the solution profile in the reactor. This study was done based on Software Ansys Fluent Version 16.2 64 program with the k-ɛ standard turbulence model. After doing pre-processing, solving and post-processing steps in simulation, then the result of this simulation is analyze. The simulation results obtained were optimal conditions at a flow rate of 0.4 L/min and a plate distance of 2 cm with consecutive residence time values of 2.77; 4.0; and 3.88 hours. In the variation in the influence of flow rate, it can be seen that the phenomenon that the faster the flow rate, the greater the turbulence. In the variation of electrode distance, it can be seen that the phenomenon of electrode distance affects the level of turbulence in the reactor, too far a distance can cause the flow to be too slow. The latter is that the CFD model can accurately predict the trajectory of the solution profile in the stirred plate column electrocoagulation reactor.
Combination of Starch and Pectin as Raw Materials for Making Edible Film Meldha, Zuqni; Fermi, Muhammad Iwan; Legawati, Lisa; Liska, Salma; Yolanda, Yogi; Hendri, Yola bertilsya; Amri, Idral
Journal of Engineering Science and Technology Management (JES-TM) Vol. 6 No. 1 (2026): Maret 2026
Publisher : Journal of Engineering Science and Technology Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jestm.v6i1.300

Abstract

Food spoilage, driven by factors like microbes and oxygen, is a major challenge in food preservation. Edible films offer an eco-friendly and biodegradable solution, acting as a protective barrier that reduces waste and extends a product's shelf life. While starch is a common and affordable material for these films, it has limitations, including poor water resistance and brittleness. This study investigates combining starch and pectin to create a superior composite edible film. This approach leverages the synergistic interaction between the two materials, which forms a more stable, dense structure through hydrogen bonds. This combination enhances key properties like tensile strength, flexibility, and water vapor resistance. The specific structure of the pectin, such as its level of methylation, is crucial, as it directly impacts how well it blends with starch and the film's final performance. By carefully controlling these interactions, the resulting edible films can achieve properties comparable to some fossil-based plastics, positioning them as a promising and sustainable alternative for food packaging. To support these findings, this research will analyze and review key performance factors from studies published over the past five years.
Studi karakteristik sintesis bioplastik menggunakan bahan dasar ubi kayu dengan variasi penambahan selulosa nanas dan pengadukan Amri, Idral; khairani; Irdoni
Chempublish Journal Vol. 4 No. 2 (2019): Chempublish Journal
Publisher : Department of Chemistry, Faculty of Science and Technology Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/chp.v4i2.7649

Abstract

Bioplastic or biodegradable plastics are polymers that are composed of organic monomers found in starch and cellulose. The purpose of this research is to make bioplastics with use of raw material starch cassava and cellulose filler pineapple leaves, by varying the speed of stirring and the number of fillers, as well as knowing the nature of the bioplastic mechanics (Modulus Young, Elogenasi , Strong tensile), biodegradability, morphology and site. The methods on this research started from the preparation of raw materials, the manufacture of cellulose pineapple, the manufacture of cassava starch and the manufacture of bioplastics. The concentration of fillers used in the study was 0.3 grams, 0.6 grams, 0.9 grams, 1.2 grams and 1.5 grams in every 10 grams of starch, stirring variations of 200 rpm and 300 rpm. And obtained the best results in this study is bioplastic which has a strong tensile 13.24 Mpa, elongation 5.16%, modulus young 1072.83 Mpa, biodegrability of the land for 7 days, site 33.33%, obtained at a concentration of 1.5 grams cellulose and pineapple Stirring 300 rpm.
Pengolahan limbah cair industri pelapisan logam dengan proses elektrokoagulasi secara kontinyu Amri, Idral; Awalsya, Febri; Irdoni, Irdoni
Chempublish Journal Vol. 5 No. 1 (2020): Chempublish Journal
Publisher : Department of Chemistry, Faculty of Science and Technology Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/chp.v5i1.7650

Abstract

Limbah cair industri pelapisan logam berasal dari hasil pembilasan pada proses pelapisan dengan Chrome, masih banyak terkandung zat berbahaya apabila langsung dibuang kelingkungan. Untuk itu perlu dilakukan pengolahan lebih lanjut dengan menggunakan elektrokoagulasi. Metode ini memiliki potensi penjernihan limbah cair pelapisan logam dan penurunan kandungan logam yang terkandung tanpa adanya penambahan koagulan. Tujuan dari penelitian ini untuk mengetahui penerapan metoda elektrokoagulasi untuk menetralkan pH, serta menurunkan kadar TSS dan Cr pada limbah dan untuk mengetahui pengaruh perubahan laju alir dan kuat arus untuk menetralkan pH, serta menurunkan kadar TSS dan Cr pada limbah. Parameter yang diuji meliputi pH, TSS (Total Suspended Solid), dan Cr. Proses elektrokoagulasi menggunakan listrik searah melalui elektroda. Reaktor elektrokoagulasi yang dipasangkan kabel ke power suplay kemudian disambungkan ke arus listrik dengan variasi kuat arus (1,2 ; 1,6 ; dan 2 A) dan variasi laju alir (0,78 ; 1,32 ; 2,7 L/menit). Hasil penelitian didapat kondisi optimum pada kuat arus 2 A dan laju alir 0,78 L/menit dengan kenaikan pH dari 4,5 menjadi 6,6, penurunan TSS dari 3,2 menjadi 1,2 mg/L, penurunan Cr sebesar 82,4 % dari 1,5 mg/L menjadi 0,263 mg/L.
Pengolahan limbah cair tahu menjadi air bersih dengan metode elektrokoagulasi secara kontinyu Amri, Idral; Destinefa, Pratiwi; Zultiniar, Zultiniar
Chempublish Journal Vol. 5 No. 1 (2020): Chempublish Journal
Publisher : Department of Chemistry, Faculty of Science and Technology Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/chp.v5i1.7651

Abstract

The liquid waste of the tofu industry contains high organic contaminants, such as proteins and amino acids. These organic compounds causes liquid waste of tofu industry to contain high BOD, COD, and TSS so that it can pollute the environment. Therefore, tofu liquid should be removed first by electrocoagulation method. This method has the potential to purify tofu liquid waste and decrease the content of COD, BOD, TSS, and pH contained without the addition of coagulants. The purpose of this study was to determine the effect of voltage and flow rate to neutralize pH, and reduce levels of COD, BOD, and TSS in tofu liquid waste. The parameters tested included COD, BOD, TSS, and pH. The electrocoagulation process uses electrical power that flows in the direction of the electrode. The electrocoagulation reactor was paired with a cable connected to the power supply then connected to an electric current with voltage and flow rate variations. The results of this study found that optimum conditions were obtained at current of 12 V and flow rate of 0.087 L/min with increasing pH from pH from 3.5 to 6.7, percent removal of COD 72.17%, percent removal BOD 71.53% , and percent removal TSS 90.90%.
Valorization of Agricultural Waste: A Study on Antimicrobial Edible Films from Avocado Seed Starch and Dragon Fruit Peel Zuqni Meldha; Iffany Adinda Chayyira; Muhammad Faiza Abrar; Muhammad Iwan Fermi; Idral Amri; chairul; Lisa Legawati; Yogi Yolanda; Yola Bertilsya Hendri; Salma liska
JRST (Jurnal Riset Sains dan Teknologi) Volume 10 No. 2, September 2026 :JRST
Publisher : Universitas Muhammadiyah Purwokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/jrst.v10i2.28867

Abstract

The growing accumulation of plastic packaging waste and the underutilization of agricultural residues have encouraged the development of biopolymer-based edible films. This study aimed to produce an edible film from avocado seed starch and dragon fruit peel pectin with the addition of red ginger essential oil as a potential antimicrobial agent and to evaluate its physical, mechanical, and organoleptic properties. The films were prepared using the solvent-casting method with starch-to-pectin ratios of 4:1 and 1:4, with or without the addition of 1 mL of red ginger essential oil. The films were characterized using FTIR and evaluated for thickness, tensile strength, elongation, and Young’s modulus. Their application to chicken meat was organoleptically assessed by 10 panelists based on color and aroma during refrigerated storage. FTIR analysis confirmed the presence of characteristic functional groups in the film components, particularly hydroxyl groups, indicating interactions among the constituents. Film thickness ranged from 0.110 to 0.170 mm and complied with the maximum Japanese Industrial Standard limit of 0.25 mm. The film with a starch-to-pectin ratio of 1:4 and red ginger essential oil exhibited the highest tensile strength of 21.53 MPa. However, elongation values of 0.000107–0.000385% indicated that the films were highly brittle and prone to cracking during peeling, wrapping, and storage. The addition of red ginger essential oil produced a stronger aroma, thereby reducing panelist acceptance. The films showed acceptable thickness and good tensile strength, but their flexibility requires further improvement. Antimicrobial effectiveness could not be confirmed because no direct microbiological testing was conducted.
Co-Authors Adam Fadillah Adam Rafif Aldori Adrianto Ahmad Adrianto Ahmad Adrianto Ahmad Afriandi Afriandi Ahmad Fadli Ahmad Fadli Albi Fadhlah Ramadhan Alfarisi, Cory Dian Alltop Amri Ya Habib Amelisa, Tika Angga Dwina Putra Ani, Tengku Urai Aris Aprianto Cahyono Awalsya, Febri Bahruddin Bahruddin chairul Desi Heltina Destinefa, Pratiwi Dion Julio Iskandar Drastinawati Drastinawati Drastinawati Drastinawati Dwi Widyaningsih Dwi Yerlis Rahmi Elfrida Ratnawati Elvi Yenie, Elvi Ervina Ervina Eufransia, Lamria Ewith Riska Rachma Fajril Akbar Fernandiaz, Revi Frimacia, Tifanny Gery Azhari Putera Gunawan Gunawan Handayani, Della Hari Rionaldo Hendri, Yola Bertilsya Hendriadi Siregar Hermana Setti Tarigan Iffany Adinda Chayyira Ihda Nurjanah Inka Novela Irdoni Irdoni Irdoni HS Irdoni Irdoni Irdoni Irdoni Jhon Alperdo Jhon Armedi Pinem Khairani Liona Margarita Siahaan Lisa Legawati Lisa Legawati M. Iwan Fermi Manik, Boy Jansen Roberto Marina Marina Michael Tanuwijaya Muhammad Faiza Abrar Muhammad Ichwan Pradana Muhammad Iwan Fermi Mutia Yuli Rahmawati Nirwana Nirwana Nurfatihayati Nurjanah, Ihda ojsadmin Onil Andika Panca Setia Utama Pane, Dewi Sriana S Paratenta, Maria Pratiwi Destinefa Rahmah Nabilah Rahmah Nabilah Rahmah Nabilah Ramadhani, Trie Sucy Revi Fernandiaz Reza Andreano D Ridho Wijaya Riski Adi Mulia Rozanna Sri Irianty Salma Liska Salma liska Silvia Reni Yenti Sinaga, Hendriyanto Sunarno Sunarno SYAIFUL BAHRI Syamsu Herman Tanuwijaya, Michael Tengku Mukhlis Tifanny Frimacia Wida Sri Wani Wida Sri Wani Wijaya, Ridho Winny Noviami Erziza, Winny Noviami Yelmida Azis Yogi Yolanda Yola Bertilsya Hendri Yolanda, Yogi Yusnimar Sahan Zuchra Helwani Zulfansyah Zulfansyah Zultiniar Zultiniar Zultiniar, Zultiniar Zultiniar, Zultiniar Zuqni Meldha Zuqni Meldha