Article Per Year (5 Year)
p-Index From 2020 - 2025
0.947
P-Index
This Author published in this journals
All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Journal of Bioprocess Chemical and Environmental Engineering Science Jurnal Pengabdian Masyarakat Waradin
Idral Amri
Unknown Affiliation
Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Decision Sciences, Operations Research & Management Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Social Sciences Other

Published : 24 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 24 Documents
Search

 1   2   3 
Pembuatan Membran Ultrafiltrasi Selulosa Asetat Untuk Pengolahan Limbah Cair Mal Ewith Riska Rachma; Jhon Armedi Pinem; Idral Amri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Ultrafiltration membrane is a membrane that resist colloids, particles, microorganisms such as bacteria and viruses or macromolecules that are 1 -100 nm in size. Membrane synthesis was using cellulose acetate material with phase inversion method. The purpose of this research were to make membranes of cellulose acetate for waste water treatment mall with 12.5%, 15%, 17.5%, and 20% by weight of cellulose acetate, operating pressure of 2, 3, and 4 bars. This research produced porous membrane and it had asymmetric structure.Key words : asymmetric, mall, porous membrane, rejecton , and ultrafiltration
Sintesis Bioplastik Berbahan Dasar Pati Jagung Dengan Penambahan Filler Selulosa Serat Daun Nanas (Ananas cosmosus) Angga Dwina Putra; Idral Amri; Irdoni Irdoni
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Conventional plastic waste is one of the most worrying issues for the environment because it can not be degraded by microorganisms. Bioplastic or biodegradable plastic is one of alternative solution to change conventional plastic, because bioplastics are easy to degrade. One of the potential materials to become the raw materials is corn starch and pineapple leaf fiber cellulose because it has high starch and hight cellulose. The general purpose of this research are to determine the impact and the best composition of the addition cellulose and glycerol in mechanical properties of bioplastic. The synthesis method is casting of corn starch, cellulose, and glycerol with composition of plasticizer is (0,5-1,5 gr) and composition of filler is (10–25 % b/b starch). The analysis of bioplastic was tensile strenght, elongation, modulus young, water uptake, biodegradation, and Scanning Electron Microscopy (SEM). The most significant factor of all responses was composition of filler cellulose and composition of plasticizer gliserol. The best process condition was bioplastic with composition of filler 25% b/b starch and plasticizer 0,5 gram with the value of tensile strength 17,11 MPa, elongation 4,345%, modulus young 393,786 MPa, water uptake 20,37% and biodegradation 27,78%. Scanning Electron Microscopy (SEM) analysis shows that filler distribution was not equal on corn starch matrices and still has a clod.Keywords : bioplastic, biodegradable, cellulose, filler, plasticizer
Pengaruh Konsentrasi Asam Asetat Dan Waktu Perendaman Dalam Proses Biosizing Terhadap Karakteristik Serat Daun Nanas Sebagai Bahan Baku Pembuatan Benang Jaring Ikan Onil Andika; Idral Amri; Drastinawati Drastinawati
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Pineapple leaf fiber is a natural fiber materials that has potential as the tool of fishing gear. However, natural fibers has the weakness, such as the low of breaking strength and prone to decayed. Therefore, it is necessary to used biosizing process for solving this problem. One of the biosizing agent that can be used is chitosan. The aims of this research is to know the effect of acetic acid concentration and soaking time on biosizing process against the breaking strength, elongation, water absorption, and density of the yarn fiber pineapple leaves. The variable process in this research is the concentration of acetic acid 2%, 4% and 6%, and biosizing time 20, 40, and 60 minutes. The study was conducted over several stages, like synthesis of chitosan from the crab shell, spinning the fiber into yarn, and the biosizing process. Biosizing yarn has mechanical and physical properties greater than natural fibers. The best results in this study is the treatment with 2% acetic acid concentration with soaking time of the yarn for 60 minutes with a breaking strength is 7.21 kgf/mm2, 28% elongation, 220% water absorption, and the density is 0.463 gr/cm3 . Based on FAO, pineapple leaf fiber yarn meet the standard as a fishing gear material, because it has a greater breaking strength than polyamide and polyetylene. Keywords: biosizing, breaking strength, chitosan, elongation, pineapple leaf fiber.
Pembuatan Macroporous Microcarrier Berbahan Baku Hydroxyapatite Menggunakan Kuning Telur Sebagai Agen Pembentuk Pori Dwi Yerlis Rahmi; Ahmad Fadli; Idral Amri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Porous hydroxyapatite is a crystalline molecule composed of calcium and phosphorus which can be used as a macroporous microcarrier. Macroporoous microcarrier is one of tissue engineering technology that consist of support matrix and can be used as a cell culture medium in bioreactor. Protein foaming-starch consolidation method is choosed for manufacturing porous hydroxyapatite with egg yolk as a pore-forming agent. The purpose of this research is to study the influence of process variables i.e yolk addition (27 - 33 gr), sintering temperature (1200oC - 1300oC), and drying temperature (170oC - 190oC) toward porous hydroxyapatite properties such as compressive strenght, porosity and pore size made by protein foaming – starch consolidation methode. The experimental resulted porous hydroxyapatite with compressive strength in range of 4.55 - 11.05 MPa, porosity in rang of 25.95 - 58.74% and pore size in range of 15.08 - 33.56 μm.Keywords: compressive strength, pore size, porosity, porous ceramic
Karakteristik Bioplastik Dari Komposit Limbah Cair Tahu (WHEY) Dan Serat Daun Nanas (Ananas Comosus) Dengan Hidrokoloid Carboxymethyl Cellulose (CMC) Inka Novela; Idral Amri; Irdoni HS
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Bioplastics have different characteristics according to their raw materials. One of the raw materials that has the potential to be made into bioplastics is whey and pineapple fiber because it has high starch and cellulose content besides that it is easy to degrade. The general aim of this research are to study the impact of whey, pineapple leaf fiber and carboxymethyl cellulose in mechanical properties and morphology of bioplastic. The castingmethod in this research consist of whey, pineapple leaf fiber, and carboxymethyl cellulose with composisition of whey (10-50% v / v), composition of pineapple leaf fiber (1-3 gr), andcomposition of carboxymethyl cellulose (2.5-4.5% b / v). The analysis of bioplastic characterization are biodegradability, tensile strength, elongation, modulus young, tearstrength, Scanning Electron Microscopy (SEM) and hydrophobicity. The most react variable is the composition of pineapple leaf fiber followed by carboxymethyl cellulose and whey. Thebest process condition is found on bioplastic with composisition whey 30% v/v, pineapple leaf fiber 1 gr and carboxymethyl cellulose 3.5% b/v with the value is biodegradation time for 23days, tensile strength 15.85 MPa, elongation 18.24%, modulus young 86.9 MPa, tear strength strength 690.63 gf/mm and hydrophobicity 6.818%. Micrograf analysis shows thatfiller distribution is not equally on whey matrices and still has a clod.Keywords: bioplastic, cellulose, pineapple leaf fiber, whey
Pemanfaatan Daun Nanas Sebagai Bahan Alternatif Filler Dalam Sintesis Komposit: Dengan Variasi Tebal Komposit Dan Persen Berat Serat Riski Adi Mulia; Idral Amri; Yusnimar Yusnimar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Composite with suitable mechanical properties were needed to meet SNI in the operation of tank in water treatment unit. Some things that can effect it were thick composites and percent weight of fiber. This research aims to make composites with natural fiber fillers from pineapple leaves, acknowledge the optimum tensile strength and flexural strength in composites with variations in composite thickness, and acknowledge the optimum tensile strength and flexural strength in composites with variations in fiber weight. In this research the material used is pineapple fiber with a fiber weight of 15%, 25%, 35%, 45%, with variations of thickness 1; 2 3 4; and 5 mm, used Polyester BQTN 157 as its matrix. Made in press mold, tensile srength tested the standard carried out with ASTM 638-02 and bending standards with the standard reference ASTM D 790-02. Tested was carried out on variations in fiber weight 15%, 25%, 35%, 45%, and variations in composite thickness 1; 2 3 4; and 5 mm . From the tests that have been carried out obtained maximum tensile strength of 63.02 MPa, at 45% by weight of fiber and 5 mm thick, while on bending testing the optimal average on fiber weight was 45% with a thickness of 1 mm which was equal to 445.50 MPa. This result was suitable with SNI for tank operation in the water treatment unit..Keywords : bending strength, tensile strength, polyester, pineapple fiber
Pengolahan Air Gambut Untuk Menurunkan Kadar Besi Dan Mangan Dengan Proses Elektrokoagulasi Secara Kontiniu Adam Fadillah; Idral Amri; Syaiful Bahri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Peat water from surface water or groundwater has high organic content and there is a metal content inside such as ferrous metals and Mn. Therefore it is necessary to do the processing by using electrocoagulation. The purpose of this study is to discuss the performance test of the electrocoagulation process continuously on the decrease of Fe and Mn levels and determine the optimum condition. The electrocoagulation process uses electric power that flows in the direction of the electrode. Electrocoagulation reactors paired with cables that connected the power supply to an electric current with varying voltages (18, 20, 22, and 24 volts) and variations in flow rate (4 and 6 lpm) are employed. The results of this study obtained the optimum conditions obtained at 24 volt voltage and 4 lpm flow rate with decrease of Fe by 89% from 2,909 mg/L to 0,322 mg/L and Mn equal to 92% from 0,232 m /L to 0,019 mg/L. Keywords: peat water, electrocoagulation, flow rate, continuous, voltage
Pengaruh Kecepatan Rotor Dan Konsentrasi Katalis Pada Pembuatan Biodiesel Dari Cpo Dengan Reaksi Esterifikasi Menggunakan Sentrifugal Kontaktor Gery Azhari Putera; Idral Amri; Silvia Reni Yenti
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Fuel needed for diesel engines in Indonesia each year increased along with the number of industrial machinery and the amount of diesel vehicles engine. With limited oil reserves, it is necessary to look for alternative sources of energy. Centrifugal contactor technology is one of the alternative technology of biodiesel production is very likely to be developed. Therfore, we need a study of biodiesel production using palm oil feedstock and methanol as reagent and sulfuric acid as a catalyst by using the esterification reaction. And this study used centrifugal contractors as the main equipment, which is equipped with a heater, raw material tank, product tank and pumps. Fixed variables selected in this study is the reaction time of 120 minutes, the molar ratio of feed is 9:1, and 60 ° C operating temperature. While the manipulated variable is rotor speed (1200, 1800 and 2400 rpm), the concentration of sulfuric acid catalyst (5%, 10% and 15% v/v methanol). The results of the research that has been done is the characteristics of biodiesel produced in this study, the kinematic viscosity values from 2,41 to 2,51 mm2/s, density 858-863 kg/m3, and acid number 6,30 to 6,66 mg-KOH/g. The composition of the methyl ester obtained is 0,33% behenic metyl ester, 48,87% palmitic methyl ester and 50,80% oleic methyl ester. The best conversion is 56,03% at the optimum operating conditions with a catalyst concentration of sulfuric acid 10% v/v methanol and the rotor speed of 2400 rpm. Correlation of rotor speed on reaction rate constant is k = 0,0002Re(0,1928) . And the relationship of the catalyst concentration the reaction rate constant is k = 0,0055[Q] 0,089.          Keywords: CPO, Centrifugal Contactors, Biodiesel, Esterification Reaction
Pemanfaatan Limbahdaun Nanas Sebagai Bahan Alternatiffiller Dalampembuatan Komposit : Dengan Variasi Posisi Serat Dan Jumlah Lapisan Serat Reza Andreano D; Idral Amri; Yusnimar Yusnimar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

At the moment composite is one of the alternative materials being developed and widely used in the industrial world. Composites that use natural fibers are chosen because they are also environmentally friendly besides cheap. One of the natural fibers around us and has good potential is pineapple leaf fibers. This study aims to determine the effect of the number of fiber layers and position of pineapple leaf fibers on the mechanical properties of composites where the resin used in this study is polyesther resin. In this study an analysis of the composite strength, elasticity and elasticity was carried out. This study uses pineapple leaf fibers with variations of 1 layer of fiber, 2 layers of fiber, 3 layers of fiber and variations in the position of the fibers, namely below, in the middle, above. The results showed that the highest mechanical properties were obtained by composites with 3 layers of fiber with tensile strength values of 65.09 MPa, flexural strength of 327.1 MPa and elastic modulus of 5917.3 MPa. The resulting composite has met fiberglass reinforced plastic specification standards for water treatment units based on SNI 7504:2011. Keywords: composite, fiber, pineapple leaves, polyesther
Upgrading Characteristics of Empty Fruit Bunch Biopellet with Addition of Bintaro Fruit as Co-firing Idral Amri; Aris Aprianto Cahyono; Bahruddin
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 2 No 2 (2021): Journal of Bioprocess, Chemical, and Environmental Engineering
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, UNRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jbchees.3.1.1-8

Abstract

The low density of mass and energy are the main reason for the underutilization of great potential of Empty Fruit Bunch (EFB) as a raw material of alternative and renewable fuels. The using of bintaro fruit as co-firing and treatment of torrefaction – densification processes were believed to increase the density of mass and energy of the EFB biopellet. This study aims to determine the effect of residence time, compaction pressure, and addition of bintaro fruit to the characteristics of EFB biopellet according to ISO 17225-6 standards. Biopellet manufacture was carried out two processes sequence, namely the torrefaction process and the densification process. The torrefaction process was carried out at 275oC with residence time variations 30, 45, and 60 minutes. The densification process was carried out without binder with compaction pressure variations 30, 40, and 50 bar. The addition of bintaro fruit was intended as co-firing of EFB at a ratio 70:30. The best characteristics of biopellet were obtained under conditions of 60 minutes residence time and 50 bar compaction pressures with 3.00% of moisture content, 7.90% of ash content, 8.70% of volatile content, 80.40% of fixed carbon content, 4719.59 cal/gr of heating value, and 1.28 gr/cm3 of density. Characteristics of moisture content and volatile content decreased while ash content, fixed carbon content, and heating value increased with increasing residence time. Characteristics of density increased with increasing compaction pressure. Characteristics of proximate and heating value increased while density properties of biopellet decreased with the addition of bintaro fruit as co-firing.
Co-Authors Adam Fadillah Afriandi Afriandi Ahmad Fadli Angga Dwina Putra Aris Aprianto Cahyono Bahruddin Dion Julio Iskandar Drastinawati Drastinawati Dwi Yerlis Rahmi Elfrida Ratnawati Ervina Ervina Ewith Riska Rachma Fajril Akbar Gery Azhari Putera Habib, Alltop Amri Ya Hari Rionaldo Hendri, Yola Bertilsya Hendriadi Siregar Hermana Setti Tarigan Inka Novela Irdoni HS Irdoni Irdoni Jhon Alperdo Jhon Armedi Pinem Liona Margarita Siahaan Lisa Legawati Marina Marina Mutia Yuli Rahmawati Nirwana Nirwana Onil Andika Pratiwi Destinefa Reza Andreano D Ridho Wijaya Riski Adi Mulia Salma Liska Silvia Reni Yenti SYAIFUL BAHRI Syamsu Herman Yolanda, Yogi Yusnimar Sahan Zulfansyah Zulfansyah Zultiniar Zuqni Meldha