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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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Sintesis Membran Ultrafiltrasi Selulosa Asetat Untuk Pengolahan Limbah Cair Mall: Variasi Waktu Penguapan Liona Margarita Siahaan; Jhon Armedi Pinem; Idral Amri
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

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Membrane is a thin layer, a barrier between two phases that are semipermeable, and serves as a selective separation media. In this research, membrane was prepared from cellulose acetate by phase inversion method. The purpose of this research was to determine the effect of solvent evaporation time to the performance of membranes asymmetry in the production of membranes for waste water treatment mall. Membrane prepared with variation of solvent evaporation time of 25, 45 and 65 seconds and operating pressure of 1, 3 and 5 bars. Characterization of the membrane is covering flux, rejection, SEM (Scanning Electron Microscopy), FTIR (Fourier Transform Infrared) and tensile strength. The results of SEM analysis showed all the membranes that are formed has an asymmetric structure. The results of FTIR analysis showed the absence of acetone solvent, acid formic and MSG in membrane. This research produed porous membrane and it had asymmetric structure.Key words : asymmetric membrane, mall, ultrafiltration and evaporation time
Aplikasi Shrinking Core Model Pada Sintesis Hidroksiapatit Dari Kulit Kerang Darah (Anadara Granosa) Dengan Menggunakan Metode Hidrotermal Suhu Rendah Ervina Ervina; Ahmad Fadli; Idral Amri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Hydroxyapatite (HA) is a ceramic material that can be used as bone and dental implants. Hydroxyapatite can be synthesized from the cockle shell (Anadara granosa). The purpose of this study was to determine the effect of time and stirring rate on the characteristics of HA using a low temperature hydrothermal method as well as decide of the kinetics model with the approach of shrinking core models. There are 3 models that are used, namely diffusion through the liquid film control, diffusion through the layer results (HA) control, and chemical reaction control. Research procedures initiated by the reaction of 36.9 g NH4H2PO4 dissolved in 600 mL of water were then added as much as 39.37 g CaO at stirring rate of 100 rpm, 200 rpm, 300 rpm and reaction time of 5 minutes to 150 minutes. The mixture was reacted at a temperature of 90˚C to form a paste. The paste was dried in an oven at 120˚C for 12 hours and calcined at a temperature of 900˚C for 1 hour. The results showed that the product formed is 95% fraction massa of HA. Kinetics model that describes the events of the synthesis of HA for belong to model 2, i.e diffusion through the layer results (HA) control with the smallest error percentage of 16.15 % with the formula:Keywords: cockle shell, hydrothermal, hydroxiapatite, kinetics model, shrinking core model
Sintesis Komposit Fe3O4/Hidroksiapatit Menggunakan Metode Kopresipitasi Dengan Variasi Suhu Sintering Dan Penambahan Fe3O4 Dion Julio Iskandar; Ahmad Fadli; Idral Amri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Magnetite/Hydroxyapatite composite is one of the media as drug carrier for a drug delivery system. The purpose of this research is synthesis of the composite, and analysing the effect of percentage of Fe and sintering temperature to the characteristic of the composite. The powder of magnetite was dispersed in 100 ml of aquadest and mixed with 33,7 mmol Ca(NO3)2.4H2O for 15 minutes, and 20 mmol (NH4)2HPO4 added to the suspense. The pH of suspension was controlled by added NH4OH 25% until pH 11 and left for reacting for 120 minutes at 90ºC. The suspension was aged for 1 day, washed and then the precipitate was separated from the suspense. The precipitate was dried for 1 day at 90ºC and ended with sintering the precipitate for 2 hours at variable temperature until powder of composite was collected. The powder of composite was characterized with XRD, VSM and FESEM. The increase of sintering temperature from 400ºC to 800ºC affecting the sample crystallinity from 14,22% to 22,55% and the magnetic saturation value from 17,2 emu/g to 4,0 emu/g. Based on the resulted from characterized of the composite, concluded that the synthesis of composite magnetite/hydroxyapatite were succeeded.Keywords :drug carrier, hydroxyapatite, composite, magnetite, coprecipitation
Pengaruh Kuat Arus Dan Laju Alir Pada Pengolahan Air Payau Menjadi Air Bersih Dengan Metode Elektrokoagulasi Menggunakan Reaktor Listrik Kontinyu Jhon Alperdo; Idral Amri; Drastinawati Drastinawati
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Brackish water was a usual the result of saltwater intrusion to the groundwater. It is due to the environmental degradation. Brackish water containing high levels of metal pollution like Fe, Cl, Mn, Zn, etc. Brackish water also usually having high levels of TDS and pH values brackish water acidic.Therefore, brackish water should be treated first that fit for using as fresh water. Brackish water treatment plant run based on the electrocoagulation. This method has the potential to purify brackish water and decrease the metal content contained such as Fe without the addition of coagulants. The purpose of this study was to determine the application of electrocoagulation to be used to neutralize pH, and reduce levels of TDS and Fe on brackish water and also to determine the effect of changes in flow rate and current to neutralize pH, and reduce TDS and Fe levels in brackish water. The parameters tested included pH, TDS (Total Dissolved Solid), and Fe using AAS. 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 variations currents (1,4 ;2 ; 2,6 A) and variations in flow rate (0,53 ; 1,15 ; 2,7 L/min). The results of this study found that the optimum conditions were obtained at current of 2,6 A and flow rates of 0,53L/min with increasing pH from 5,8 to 6,8, decreasing TDS from 480 to 295 mg/L, Fe decrease of 66,97% from 0,5971mg/L to 0,1972 mg/L. Therefore, based on the results of parameter being tested, brackish water processed with electrocoagulation using continuous electric reactor is in line with the portable water quality standards based on Permenkes RI No.492-2010.Keywords: Brackish water, current, electrocoagulation, flow rate
Studi Kajian Pembuatan Asam Oksalat Dengan Variasi Kecepatan Pengadukan Dan Lama Waktu Pengadukan Dari Bahan Dasar Ampas Tebu Afriandi Afriandi; Fajril Akbar; Idral Amri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Bagasse is a by product from the processing of sugar cane into sugar. The growing number of bagasse quantitatively into environmental problems that require attention and special handling. The purpose of this research was conducted to study the effect of stirring speed variation and stirring time. Bagasse was reduced in size to 40 mesh, then added 250 ml of 4 N NaOH solution and stirred at a speed of 300 rpm for 20 minutes, after which the samples were heated in an oven at a temperature of 180 0C for 75 minutes, then the samples are removed and added to hot water ± 150 ml, then filtered and washed until the filtrate is clear. Samples added CaCl2 10% solution of 250 ml until the precipitate formed is then filtered, then the precipitate was dissolved by H2SO4 2 M, then filtered and washed using 96% ethanol as much as 15 ml. The filtrate heated using a water bath at a temperature of 70 0C ± 1 hr, then the filtrate cooled to oxalic acid precipitation in the form of white crystals. Results obtained was purified by recrystallization process using ethanol 96%. The crystals that formed were analyzed qualitatively and quantitatively, the qualitative analysis carried out by the test Fourier Transform Infrared Spectroscopy (FTIR), while the quantitative analysis conducted by test melting point of the Melting Point Apparatus and calculate yield. Based on the research that has been done obtained yield (%) highest oxalic acid at stirring speed of 600 rpm and a stirring time of 50 minutes long as many as 0.92 grams, with a yield (%) of 6.133%.Keywords : Bagasse, calcium chloride, oxalic acid, sodium hydroxide, sulfate acid
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
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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
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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
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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

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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
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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
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