Article Per Year (5 Year)
p-Index From 2020 - 2025
1.259
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
Amri, Idral
Unknown Affiliation
Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Decision Sciences, Operations Research & Management Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology

Published : 9 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 9 Documents
Search

 1 
Pembuatan Biodiesel Dari Bahan Baku Cpo (Crude Palm Oil) Dengan Reaksi Transesterifikasi Menggunakan Kolom Sentrifugal Kontaktor (Variasi temperatur Dan Waktu Reaksi) Erziza, Winny Noviami; Amri, Idral; Yenie, Elvi
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

Transesterification reaction is a reaction between oils (triglycerides) with alcohol to produce fatty acid alkyl esters and glycerol as a byproduct. Biodiesel is obtained by reacting vegetable oils or fats with methanol. So that the resulting product is known as the methyl ester. Due to, production of petroleum fuels is limited, it is necessary to develop a vegetable oil to produce biodiesel. One of the vegetable oil that can be used is derived from CPO (Crude Palm Oil) by using a column centrifugal contactor. In this study, biodiesel obtained by transesterification of CPO (Crude Palm Oil), using KOH catalyst. The process is conducted by variation of temperature (50ºC., 60°C, and 70ºC), and reaction time (0.5, 1 and 1.5 hours), with a fixed variable stirring speed of 300 rpm and a molar ratio of methanol / oil 6: 1, the concentration of catalyst KOH 1%wt. Based on the test results showed that the transesterification reaction time and temperature affected by the speed of reaction formation of biodiesel. The good operating conditions obtained in this study at temperature of 60°C, and the reaction time of 1.5 hours which resulted in the conversion reaction of 39,47%. The percentage of ester product area is 6.37% and 28,894% glycerol. Methyl ester product was obtained in the form of palmitate, dimethyl azelate, methyl myristate, methyl laurate, and methyl nonanoat. Characteristics of biodiesel produced in this study meets to the Indonesian Standards of biodiesel, with the value of the kinematic viscosity (40°C) 3.91 to 4.15 cSt, Density (40ºC) = 872.95 to 886.44kg/m3, and a flash point at 136ºC (min. 100ºC).Keywords: Crude Palm Oil, transesterification, biodiesel, column centrifugal contactor
Netralisasi Limbah Cair Industri Tahu Menggunakan Metoda Elektrokoagulasi Dengan Elektroda Al-Al Dengan Variabel Waktu Proses Dan Ketebalan Plat Nurjanah, Ihda; Amri, Idral; Irdoni, Irdoni
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

The tofu factory located in Pangkalan Kerinci, Pelalawan District, produces 1 m3 of liquid waste every day and are immediately disposed of without going throught the processing before release to environment. The analysis shows that the liquid waste is not in accordance with Permen LH No. 5 2014. This will deerease the oxygen level in the water. The purpose of this study was to determine reduce levels of TSS, BOD and pH with plate thicknes and prosesing time. Neutralization of liquid waste of tofu industry. The electrocoagulation method was used to reduce BOD, TSS and neutralize pH by varying the time, plate thickness. The conclusions obtained are: (1) Time variation (20, 40 and 60 minutes), and effective time is 60 minutes, current strength of 0.6 A decreases 72% BOD concentration, TSS 69.9% and pH becomes 6.01. (2) Variation in plate thickness (0.5; 1.0 and 1.5 mm), and effective plate thickness of 1 mm at 60 minutes can reduce BOD concentration 73.14%, TSS 68.78%, pH becomes 6.83. The results of the research obtained are in accordance with Permen LH No.5 of 2014.Keywords :Tofu Liquid Waste, Electrocoagulation, BOD, TSS, pH.
Praperancangan Pabrik Metil Ester Dari CPO (Crude Palm Oil) Dengan Disain Alat Utama Reaktor Transesterifikasi Frimacia, Tifanny; Amri, Idral
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Along with the development of the era, the need for fuel oil is increasing. The development of research and the use of diesel motors in industry will not stop just because of the depletion of fossil fuels. The search for alternative fuels as a substitute for diesel continues to be carried out in addition to dealing with the problems of the global energy and environmental crisis as well as helping to develop automotive technology as a work of human culture. Methyl ester is a biofuel that can be used to power diesel engines. The availability of fuel oil derived from petroleum is running low and the price is increasing so that alternative fuel sources are needed. One of the substitutes for conventional fuels from petroleum is vegetable oil. Methyl ester is produced using a transesterification reaction by changing the triglycerides which are reacted with one of the alcohol compounds, namely methanol to become methyl ester, and a production capacity of 250,000 tons / year is obtained. The main design tool is the CSTR (Continuous Flow Stirred-Tank Reactor) reactor which is used as a place for the transesterification reaction between triglycerides and methanol to produce methyl ester (main product) and glycerol (by-product). The operating temperature used is 333.15K. Based on the calculation results, the reactor volume is 57.28 m3, the reactor diameter (OD) is 168 in m with torispherical flanged and dished head and skirt support. Keywords: Methyl ester, reactor, transesterification, triglycerides.
Pengaruh Tekanan Operasi Membran Dalam Pengolahan Air Limbah Pulp Dan Kertas Eufransia, Lamria; Pinem, Jhon Armedi; Amri, Idral
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Membrane technology is an effective technology to purify wastewater. The objective of the research is to determine the performance of the ultrafiltration for removal of BOD5, COD and TSS from wastewater of pulp and paper industry. This research has been conducted on wastewater treatment of pulp and paper industry with ultrafiltration process using poly aluminium chloride as a coagulant. Wastewater purified by ultrafiltration membranes with a variation of operating pressure 1.0 bar; 2.0 bar; and 3,0 bar. The result show that ultrafiltration process removed 78,93% of  BOD5; 84,22% of COD; and 88,64% of TSS with flux value of 65,95 L/m2.jam at 3,0 bar. Keywords: Pulp and paper wastewater, poly aluminum chloride,rejection, ultrafiltration
Pengaruh Laju Alir Dan Tegangan Pada Pengolahan Limbah Cair Pabrik Kelapa Sawit Dengan Metode Reaktor Elektrik Kontinu Handayani, Della; Amri, Idral; Herman, Syamsu
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Palm oil mill effluent continues to grow along with palm oil production in Indonesia. Palm oil mill effluent treatment has been using anaerobic ponds which are not efficient due to the require large areas of land and due to greenhouse gases because they produce CO2. Electrocoagulation is an alternative technology and advanced technology in treating palm oil mill effluent. Electrocoagulation is a method of coagulation using direct current through the electrochemical process. This research discusses the variation of voltage and flow rate using reactor methods with pollutant parameters such as biological chemical demand, chemical oxygen demand, total suspended solids and acidity (pH). The type of electrodes used is aluminum with voltage variations of 5, 7 and 9 volts and flow rate variations of 3,36; 4,32; and 7,5 L/hour. The sample used came from PTPN V Sei Galuh in Riau. The results obtained by the highest percentage of reduction in BOD were 84.76%; COD of 83.38%; TSS of 88.73% at a voltage of 9 volts and a flow rate of 3,36 L/hour. The results of this research are in accordance with the standard quality standards for palm oil mill effluent in the Minister of Environment Regulation number 5 of 2014. Keywords: BOD, COD, electrocoagulation, TSS, pH.
Sintetis Pembuatan Briket Menggunakan Limbah Buangan Pulp Tanuwijaya, Michael; Amri, Idral; Zultiniar, Zultiniar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Indonesia is one of the largest paper producing and exporting countries in the world. Along with the increase in paper production causes an increase in solid waste originating from the reject pulp. The reject pulp has the potential to produce energy because it still contains high cellulose content of around 85.16% which is able to support the provision of usable and environmentally friendly fuel. The purpose of this study was to use of reject pulp as fuel in the form of briquettes by mixing coconut shell charcoal as cofiring and CPO sludge as an adhesive. Briquettes will mixed with a variety of composition of reject pulp and coconut shell charcoal cofiring from 80%: 0%, 20%: 60%, 30%: 50%, 50%: 30%, 60%: 20%, and 0%: 80% , for adhesive 20% while 90%: 0%, 30%: 60%, 40%: 50%, 50%: 40%, 60%: 30%, 70%: 20% and 90%: 0% for adhesive 10 % of the total briquette weight which is ± 2 grams. The briquettes that have been form must qualified to the quality standards of SNI for wood charcoal (No.1 / 6235/2000) where after being tested only a few compositions have qualified the standards, for the reject pulp composition and coconut shell charcoal cofiring from 0:90, 30:60 40:50 with an adhesive composition of 10% and a composition of 0:80, 20:60, 30:50 with an adhesive composition of 20%, with the highest calorific value of 5274 cal/g and ash content of 2.65%. Key words: Briquettes, Coconut shell charcoal, CPO sludge, Reject pulp,
Kinetika Reaksi Deproteinasi Limbah Udang Ebi Pada Isolasi Kitin Wijaya, Ridho; Fadli, Ahmad; Amri, Idral
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

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

Abstract

Chitin is a biopolymer and can be synthesized from ebi shrimp waste through deproteination and demineralization processes. The purpose of this study was to determine the kinetics of deproteination reaction in chitin isolate with variable reaction temperature and stirring rate. The study began by reacting shrimp waste powder with 3.5% NaOH solution using a ratio of 1:10 at 75 ° C, 85 ° C and 95 ° C and 200 stirring speeds, and 250 rpm in a glass beaker equipped with stirrer. Samples were taken every 10, 20, 30, 50, 70, 90, 110 and 120 minutes as much as 40 mL, then washed until the pH was neutral and the sample filtered. The shrimp powder produced was analyzed using titration method of formol to know the protein content contained in the sample. The results showed that the reaction kinetics follows the pseudo first order equation. The higher the temperature and the speed of stirring given to the deproteination process the greater the concentration produced. The reaction speed constant at 75°C, 85°C and 95°C with 200 rpm stirring speed was obtained at k = 0.0098 min-1 to 0.0217 min-1. While at 250 rpm stirring speed k = 0.0113 min-1 to 0.0255 min-1. The optimal condition available in this study is 95oC with 250 rpm stirring speed so that it produces protein from 14.08% to 0.87%.Key words : Deproteination, chitin, reaction kinetics, ebi shrimp waste, FTIR analysis.
Pengurangan Impor Sodium Klorat di Indonesia melalui Desain ClO2 Semi-Integrated pada Modifikasi ClO2 R8 Plant 10 Ton/Hari Manik, Boy Jansen Roberto; Amri, Idral; Paratenta, Maria
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 5 No 1 (2024): 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.5.1.1-10

Abstract

Pulp production always has a bleaching process that uses chlorine dioxide (ClO2) as a bleaching pulp agent. One of the ClO2 production units that are used in the Pulp Industry in Indonesia is a ClO2 R8 non-integrated plant with the process of reacting sodium chlorate, sulfuric acid, and methanol. This ClO2 production type has a weakness, especially in supplying the raw material sodium chlorate, which is needed to import, and the characteristics are easy to explode, making production costs high. This research aims to modify the ClO2 R8 non-integrated by changing to a ClO2 semi-integrated plant. In this research, HYSYS was used to simulation to get mass and energy balance and other component data, and the design of equipment based on the American Society of Mechanical Engineers (ASME), Kern, internal data company, and others to get the specification equipment and also drawn using Autocad. The last step is to account for the economic for getting cost of production before and after modification, fixed capital cost, benefit, payback period, and return on investment. The resulting area, the first, modification of the ClO2 R8 plant by changing to ClO2 semi-integrated could produce chlorate solution 510 g/l which they use electrolyzers system from Chemetics with 20 cell M25 and hypo system. Second, the cost production for the ClO2 semi-integrated plant is 1393 USD/T, the benefit is 599.79 USD/year, the Payback period (PBP) is 6,65 years with an investment of about 3988 KUSD and RoI 15%.
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.
Co-Authors Ahmad Fadli Amelisa, Tika Elvi Yenie, Elvi Eufransia, Lamria Frimacia, Tifanny Handayani, Della Irdoni Irdoni Jhon Armedi Pinem Manik, Boy Jansen Roberto Nurjanah, Ihda Paratenta, Maria Sunarno Sunarno Syamsu Herman Tanuwijaya, Michael Wijaya, Ridho Winny Noviami Erziza, Winny Noviami Zultiniar, Zultiniar