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All Journal Reaktor Jurnal Ilmu Lingkungan Jurnal Sains dan Teknologi Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Majalah Kulit, Karet, dan Plastik JOURNAL OF EARTH ENERGY ENGINEERING Journal Of Chemical Process Engineering (JCPE) Civic-Culture : Jurnal Ilmu Pendidikan PKN dan Sosial Budaya Chemistry Indonesian Journal of Chemical Research Jurnal Kesehatan Indonesia Jurnal Ilmiah Akuntansi Peradaban Unri Conference Series: Community Engagement Jurnal Teknik Kimia Indonesia Journal of Bioprocess Chemical and Environmental Engineering Science Warta Perkaretan Prosiding Konferensi Nasional PKM-CSR Jurnal Teknologi Kimia Unimal Bhakti Nagori (Jurnal Pengabdian kepada Masyarakat) JURNAL SIPISSANGNGI: Jurnal Pengabdian Kepada Masyarakat LAVOISIER: Chemistry Education Journal Jurnal Sains dan Ilmu Terapan AGROTEKBIS: Jurnal Ilmu Pertanian Journal Of Chemical Process Engineering LAVOISIER: Chemistry Education Journal JURNAL REKAYASA KIMIA & LINGKUNGAN Proceeding International Conference on Education
Bahruddin Bahruddin
Universitas Riau
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Pengaruh Nisbah Dan Suhu Pencampuran Selulosa Dan Pati Terhadap Sifat Dan Morfologi Bioplastik Berbahan Dasar Pati Umbi Talas Wira Bima Stevent Sembiring; Irdoni HS; Bahruddin Bahruddin
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

The use of plastic in large quantities impact on environment pollution as the effect of the plastic cesspool accumulation which cannot be decomposed naturally (non-biodegradable). Research bioplastics (biodegradable plastic) based starch done to find alternative to reduce the consumption of conventional plastics. But, the starch has a weakness on mechanical properties. The purpose of this study was to knowing the characteristics of taro starch and cellulose from banana stems, knowing the effect of water ratio, temperature and composition of the cellulose filler on mechanical properties and morphology of the bioplastics products. Manufacture of bioplastics made by the casting method, ie mixing taro tuber starch, glycerol, and cellulose. Bioplastics produced do some analysis, which includes the analysis of the chemical composition, tensile strength (tensile strenght), elongation (elongation at break), water uptake, biodegradation, SEM (Scanning Electron Microscopy) and analyzed using Response Surface Methodology (RSM). The most effected factor was significant to all the responds was the composition cellulose filler which followed by the temperature and water ratio. The best composition is bioplastic with filler cellulose 14,999%b/b, temperature 75,775oC and water rasio 20v/b which is tensile strenght was 6,906 MPa, elongation 10,906%, water uptake 28,491% and biodegradable 54,143%.Keyword : cellulose, glycerol, starch, tensile strength, and water uptake
Evaluasi Pressure Drop Pada Sumur Injeksi Uap Di Lapangan Duri Dengan Persamaan Beggs-Brill Dan Moody Ahmad Riadi S Hasibuan; Bahruddin Bahruddin; Ahmad Fadli
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Steam injection is a heat transfer process to petroleum reservoir through multiphase flow of wet steam. Estimating pressure drop in multiphase flow is more difficult than for single-phase flow. Multiphase flow is a complex phenomenon because of the interdependence of various variables that affecting pressure drop such as flow regime, hold up, flow geometry at horizontal, vertical or deviated, flow rate of each phase and the fluid properties of each phase. The purpose of this study is to find out the most appropriate model to calculate the pressure drop in steam injection wells and understand parameters that most affecting pressure drop. Research methodology for this study is descriptive analysis. Field data from 30 injection wells in Duri field are collected and compared with 2 variations of Beggs-Brill and Moody equation, which are the original model and the model with Palmer correction. Both models are translated into a simple computing program using Excel application. Calculation result from the model is compared with the measurement results to understand the deviation or error. As the result of this study, it is shown that Beggs-Brill and Moody model without Palmer correction is suitable for steam injection application. Average error is only 0,2% with a standard deviation of 3,32%. Further information is obtained from the sensitivity analysis that the accuracy of pressure drop calculation is affected by measurement accuracy of the steam flow rate, steam quality and steam temperature. Keyword: Beggs and Brill correlation, Moody diagram, Palmer correction, pressure drop, steam injection.
Pengaruh Nisbah Polypropylene / Serat Pelepah Sawit Dan Kadar Maleated Polypropylene (MAPP) Terhadap Sifat Dan Morfologi Wood Plastic Composites (WPC) Nurul Aini Thaibil Fadhly; Irdoni HS; Bahruddin Bahruddin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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One of the materials that can be used as a component in the manufacture of Wood Plastic Composite (WPC) is a palm frond fibers. Palm frond is one of the solid waste of oil palmplantations and abundant availability has not been utilized optimally. The purpose of this study was to determine the influence of the ratio of polypropylene (PP) / palm frond fibers and Maleated polypropylene compatibilizer levels of the properties and morphology of WPC. WPC samplesprepared by the method of melt blending between palm frond fibers, PP, Maleated polypropylene (MAPP), and paraffin for 15 minutes at a temperature of 170 ° C and a rotor speed of 80 rpm using Internal Mixer. The size of the palm frond fibers used is 1 cm. While the ratio of the weight of PP/palm frond fibers is 50/50, 60/40 and 70/30 and the addition of MAPP of 0%, 4% and 5%. Testing experiments were prepared to mechanical testing consist of tensile and flexural strength and physical testing consist of density, water absorption, and swelling thickness. Scanning Electron Microscopy was used as a morphology testing. The results showed that the best mechanical properties in a ratio of polypropylene / palm frond fibers (60/40), MAPP (5%), with the value of tensile strength 256.05 kgf/cm2 and flexural strength 598 kgf /cm2.The best physical properties of water absorption at a ratio (60/40) with MAPP (0%) is 0,97%, the density at a ratio (60/40) and MAPP (5%) is 1,07% and swelling thickness at a ratio (50/50) with MAPP (0%) is 0,17%.Keywords: maleated polypropylene, morphology, palm frond fibers, mechanical properties , wood plastic composite
Pengaruh Waktu Dan Suhu Reaksi Grafting Pada Proses Pembuatan Maleated Natural Rubber Ade Putra; Yelmida Yelmida; Bahruddin Bahruddin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Natural rubber can be modified through the grafting process. of maleic anhydride (MAH). Maleic anhydrade has been grafted into natural rubber to make a compound called Maleated Natural Rubber (MNR). The aiming in this research is learning of the reaction time effect and the temperature of natural rubber grafting process. Furthermore,kinetics reaction of the grafting process has to be learned. Independent variables are 8 phr of MAH and 60 rpm rotor speed of internal mixer. Dependent variables are reaction temperature and reaction time, which are variated by 150oC, 155oC, 160oC, and 165 of reaction temperature, and 6, 8, 10, 12, 14 minutes of reaction time. The degree of grafting was determined by titrimetric method, meanwhile kinetics reaction is learned by assumption of pseudo - first order to get the value of the constant rate of reaction (k). The results showed the optimum temperature is 160oC  and reaction time is 12 minutes. Best conditions of the kinetics reaction has been obtained at reaction temperature 155o and 165oC, which produced constant rate of reaction is 0.004 min - 1, activation energy is 6107 cal / mo , hereby  the Arrhenius equation : k = 4,65 e-6071/RT  Keywords: grafting degree, maleic anhydric, maleated natural rubber, temperature, Arrhenius equation.
Degradasi Karet Alam Menggunakan Katalis CoCl2 Dengan Variasi Waktu Reaksi Ivan Fadhillah; Said Zul Amraini; Bahruddin Bahruddin
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

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Abstract

Liquid Natural Rubber (LNR) is a product of natural rubber latex depolymerization process whose molecular weight specifications are influenced by several factors. Two of them are CoCl2 catalyst content and depolymerization reaction time. This study aims to synthesize Liquid Natural Rubber (LNR) from Latex Natural Rubber and determine the effect of variations in the addition of CoCl2 catalyst levels and reaction time to the molecular weight of the resulting LNR. The first treatment in this study had several stages, namely the preparation of raw materials including dilution of natural rubber latex resulting from cutting of rubber trees into natural rubber latex with dry rubber content (DRC) 20%. After that, the process of depolymerization was continued with the help of a CoCl2 catalyst which varied the levels of CoCl2 1 phr, reaction times 7, 8 and 9 hours, stirring speed of 250 rpm and stirring temperature of 70 ºC. The final stage of LNR purification was using methanol, toluene and oven at a temperature of 70ºC. The LNR products obtained are liquid and semi-gel. The formed LNR has functional groups and structures that conform to the LNR formation specifications. While the Mn LNR molecular weight value with a variation of ,reaction time, did not experience a significant difference for each additional reaction time.Keywords : liquid natural rubber, gel permeation chromatography, cobalt dichlorite, depolymerization and dried rubber crumb.
Aktivasi Green Coke Menjadi Karbon Aktif Menggunakan KOH Sebagai Aktivating Reagent Rahmawati Rahmawati; Irdoni HS; Bahruddin Bahruddin
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

The activated carbon is one of adsorbent which often used in absorption process. This is because the activated carbon has better absorptive capacity of adsorption and surface areathan other adsorbent. One of the potentially material that can be used as a raw material to be activated carbon is green coke because it has 87- 97% carbon content and 250-3000 m2/grsurface area. This research aims to determine the effect of mass comparison of KOH to green coke, and activation time to the characterization of activated carbon. The manufacture ofactivated carbon was carried out with chemical activation method which used KOH as activating reagents. The process was done by mixing the green coke and KOH with a mass ratio variation (1/1; 2/1; 3/1 b/b) and activation time (18, 20, 22 hours). The activatedcarbon was analyzed with proximate analysis (moisture, ash, volatile), activated carbon absorption of the methylene blue, the surface area of BET (Brunauer Emmett Teller) and analysis by using Design Expert v10.0.1. The mass comparison of KOH to green coke and activation time indicated a significant effect to all of responses. On the best condition process (KOH mass comparison to green coke is 3.414:1 and activation time 20 hours) was obtained the best response value for mass yield 85.9%,; water content 7.37%; ash content 3.22%; volatile substance content 6.8%; the absorption of activated carbon to the methylene blue is 137.15 mg/g and surface area is 25,33 m2/gr. The analysis result of surface area determine that KOH mass comparison to green coke and activation time has significant effect to the surface area, it is indicated by the pores which increasingly open and the enhancement of surface area before activationKeyword : activated carbon, chemical treatment, green coke
Pembuatan Bioplastik Berbasis Komposit Pati Sagu-Carboxymethyl Cellulose (CMC) Dengan Plasticizer Sorbitol Firdaus Septiawan; Said Zul Amraini; Bahruddin Bahruddin
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

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The use of sago starch in production of bioplastic is an efforts to utilized natural resources in Riau Province. Carboxymethyl cellulose (CMC) and sorbitol can be added when the process for making bioplastic sago starch-based was carried out, to improve the quality of bioplastic. The aims of this research were to produced biodegradable plastic composite blends based on sago starch-CMC using sorbitol as plasticizer, to assess the effect of CMC and sorbitol as additional materials on mechanical properties, water uptake, and biodegradability of bioplastic, and also to determine mathematical relationship between the research parameters and the characteristics of bioplastic statistically using response surface method (RSM). This research were started by mixing sago starch, CMC (35, 40 and 45%w/w starch) and sorbitol (20, 25, 30 and 35% w/w total solid). Bioplastic obtained by this process were characterized by mechanical properties analysis, water uptake test, and biodegradability test. Based on the empirical equation obtained, the addition of CMC would increase the tensile strength, water uptake and biodegradability of bioplastic, while the addition of sorbitol would increase the percentage elongation of bioplastic. At optimum process condition, CMC 42,27% and sorbitol 24,25%, the best result with tensile strength 6,776 MPa, percentage elongation 18,134%, water uptake 69,418% and percentage biodegradation 55,459%.Keywords: bioplastic, carboxymethyl cellulose, response surface method, sago starch, sorbitol
Modifikasi Bioplastik Berbasis Pati-Polivinil Alkohol (PVA) Dengan Cross-Linking Agent Asam Sitrat Dan Pemplastis Gliserol Herlili Peronika; Bahruddin Bahruddin; 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

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Abstract

Bioplastic characteristics are influenced by various parameters, including levels of cross linking agents (such as citric acid) and plasticizers (such as glycerol). The research was to study the effect of citric acid and glycerol levels on mechanical properties, cross linking (characterized by ester groups), and biodegradation of bioplastics based starch-polyvinyl alcohol (PVA). Bioplastic manufacturing is done by mixing sago starch -PVA (1: 3), glycerol (10, 15, 20% w/w) and citric acid (2.5; 5; 7.5% w/w) at 90ºC for 45°C minutes, optimization of process conditions is determined by response surface methodology (RSM). The parameters tested include tensile strength test, elongation, and biodegradation. The most significant factor affecting all responses was the level of citric acid and glycerol. The optimum process conditions were obtained at 7.5% w / citric acid content and glycerol 19.63% w / w with a tensile strength response of 21 MPa, elongation 566.6%, and 55.63% biodegradation. Keywords: bioplastics, citrid acid, glycerol, polyvinyl alcohol, RSM, sago starch
Pengaruh Kadar Filler Abu Sawit (Ukuran Direduksi) Dan Temperatur Pencampuran Terhadap Morfologi Dan Sifat Komposit Polipropilen/karet Alam Melda Helena S; Bahruddin Bahruddin; Ahmad Fadli
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Morphology and properties of composites PP/NR is influenced by the condition of the rawmaterial mixing process between the phase and compatibility. The purpose of this study was toinvestigated the effect of blend content filler fly ash and mixing temperature on morphology andmechanical properties of polypropylene (PP)/NR composite. Filler size is reduced by MechanicalMilling process until the filler size ≤ 700 nm. Variation of blend kontent fly ash (reducted particlesize) 30, 40, 50 and 60 phr were studied in order to determine the optimum content of fly ash(reducted particle size). The rubber compound  has been made by two roll mill at ambienttemperature and 20 rpm rotor speed. Dynamic vulcanization was done on internal mixer at variousmixing temperature 170 oC, 175 oC, 180 oC , and 185 oC. Rotor speed on internal mixer at 60 rpm.The mechanical properties was done by Universal Testing Machine (UTM) and the morphologywas examined by Scanning Electron Microscopy (SEM). The optimum result was found at thecontent of fly ash (reducted particle size) 40 phr and the optimum temperature  was 175oC. The bestmechanical properties was given on tensile strength 4,3 MPa, elongation at break 28,1 % and modulus elastic 104,2 MPa.Keywords: ash oil, composites PP / NR, mechanical properties, natural rubber,  polypropylen.
Modifikasi Aspal Konvensional Penetrasi 60/70 Menggunakan Lateks Kebun Dengan Variasi Konsentrasi Dan Kadar Karet Kering Lateks Rani Yuliantari; Rozanna Sri Irianty; Bahruddin Bahruddin
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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Abstract

Natural rubber is an natural polymer that is potentially used as n asphalt additive. This research aims to determine influence of dry rubber content and amount of field latex to asphalt modified properties. In this study, has been used are latex with 22% of dry rubber content (non centrifugated) and 56% of dry rubber content (centrifugated). The sample made by adding field latex in to asphalt at 160ºC with 20 minute of blending time. The concentrations of latex were 5.0%, 7.5%, 10.0%, 12.5% and 15.0% w/w in the mixture. The samples were tests included penetration, softening point, marshall stability, and penetration after loosing weight, with standard of Spesifikasi Umum Binamarga Divisi 6.2010. The result showed that dry rubber content and amount of latex affects the value of test parameters asphalt modified. The best result is obtained from adding 10% w/w non centrifugated latex with penetration, softening point, stability, and penetration after TFOT, respected are 56 dmm, 58ºC, 1554 kg and 55 dmm. The result of this study indicated that addition of non centrifugated latex can improve asphalt properties.Keywords: asphalt modified, asphalt properties, dry rubber content, field lateks, polymer
Co-Authors Ade Putra Ade Rahayu Putri Adhy Prayitno Adrianto Ahmad Adrianto Ahmad Adrianto Ahmad Adrianto Ahmad Adrianto Ahmad Adrianto Ahmad Adrianto Ahmad Ady Maulana Afrianti, Dwi Afrila Afrila Afrilianti, Azyarah Afrilla, Nurul Ahmad Fadli Ahmad Fadli Ahmad Riadi S Hasibuan Aidil Akbar Akbar, Anif Aulia Alfian Malik Almasdi Syahza Alumni STIKES Husada Borneo Ambtenarie Jessica Sihombing, Ambtenarie Jessica Aminuyati Amir Hamzah Amraini, Said Jul Amrizal Amrizal ' Amun Amri Andreas Sahat Parsaulian Andri Mulia Angelina Angelina Anugerah Rifaldi Aras Mulyadi Aris Aprianto Cahyono Artha, Ulfa Dwi Arya Wiranata Arya Wiranata Arya Wiranata Bramansyah Riswanda Briliantina Rossa Cindy Oktaviani Damayanti, Elok David Andrio Deliana, Putri DESI PURNAMA SARI Dewi Maya Sari Dian Anggraini Purba Dian Eka Indriani Djaimi Bakce Donny Kurniawan Dwifirman, Widya Edi Saputra Efriyeldi, Efriyeldi Ekawati, Lestari Endro Siswoko Eri Malindo Fachry Abda El Rahman Fadhila Nursyifa Fadli, A Fauzi, Subehan Firdaus Septiawan Fitra Annisa Gede Wibowo Gunawan Gunawan Hamsar Hamsar Handayani, K.H Sri Hara Novarisa Nanda Hasrul Hasrul Hendri, Zwilla Oktoriana Heni Sugesti Herlili Peronika Herry Novriansyah Hotnida Butar Butar HS, Irdoni. Ida Zahrina Idral Amri Idral Idral Irdoni HS Irdoni Irdoni Irdoni Irdoni Irdoni Irdoni Irdoni Irdoni Isra, Muhammad Ivan Fadhillah Ivan Fadhillah Jabosar Ronggur Hamonangan Panjaitan Jahrizal Khairat Khairat, Khairat Khairat, Khairat KRISTINA WIJAYA Liendra Juniarti Lita Darmayanti Lubis, Abdillah Lubis, Apriadi Luci Octaria Lusiana Sri Wahyuni M. Iwan Fermi Maradona Maradona Mariatul Qiftiah Melda Helena S Melly Anggraeni Mery Christina Meysara Meysara MS, Frasucia Aquaviva Muchlis Ade Putra Mudinillah, Adam Muhammad Anshar Muhammad Muhammad Muhammad Muhammad Muhammad Nasri Katman Muhammad Nur Muhammad Reza Muhammad Rivai Nadimisia, Tiara Dwisca Ni putu Vidya Primarista Nirwana Nirwana Nonot Suwarno Nopi Andri Musfa, Nopi Andri Novriyani, Vivi Nurazizah Nurazizah, Nurazizah Nurhidayah Nurhidayah Nurul Aini Thaibil Fadhly ojsadmin Oktaviani, Cindy Pakpahan, Cindy Peji Nopeles Puskesmas Guntung Payung R Firmansyah Rani Yuliantari Razita Hariani Rina Gunarti Rizky Sandy Harahap Robby Kumar Robby Kumar Romfis, Dio Rosmawati, Putri Roy Marthin Panjaitan Rozanna Sri Irianty RS Khusus Bedah Siaga Banjarmasin Russita Martani Russita Martani Septian, Septian Septiana Veronika S Septiana Veronika s, Septiana Veronika Shaleh, Idries Hamidi Siti Sakinah Sonny Wijaya Sri Helianty Sri Helianty Sri Rezeki Muria Sri Rezeki Muria STIKES Husada Borneo Sudirman Sudirman Sugesti, Heni Sumarno Sumarno Sunardjo SUSANTO, RENO Susanty, Wenny Suwondo Suwondo Syahwardini, Trisuciati Syamsu Herman Syarfi Daud Syarfi, Syarfi Syarfie, Syarfie Syelvia Putri Utami Syelvia Putri Utami Syelvia Putri Utami Syoffinal Syoffinal Thamrin Thamrin Toety Marliaty Trisuciati Syahwardini Trisuciati Syahwardini Trisuciati Syahwardini Umar Umar Ummy Aisyah Rochaeni Viodita Rizki Vivi Novriyani W, Ririen Wahyu Suci Rahmani Wahyu Suci Rahmani Wenny Susanty Wira Bima Stevent Sembiring Wira Irawan Rossani Wiranata, Arya Yanny Sartika Yelmida Azis Yoga Deswan Suwary Yoga Pratama Yogi Chandra Yolanda, Putri Gusti Yulia, Indri Yunus, Aulia Yusnila Halawa Zainal Abidin Zuchra Helwani Zuliarti, Indah Zultiniar Zultiniar Zultiniar, Zultiniar