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All Journal CHEMISTRY PROGRESS CHEMICA Jurnal Teknik Kimia Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Jurnal Riset Kimia Info-Teknik Jurnal Ilmiah Universitas Batanghari Jambi Communications in Science and Technology Jurnal Vokasi Unri Conference Series: Community Engagement Journal of Applied Materials and Technology Journal of Community Engagement Research for Sustainability Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Sagu Molekul: Jurnal Ilmiah Kimia
Yusnimar Sahan
Universitas Riau
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Nursing Public Health Social Sciences Other

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Pemisahan Emas Pada RAM (Random Access Memory) Komputer Dengan Metode Elektrolisis Edo Prima Arif; Yusnimar Yusnimar; Drastinawati Drastinawati
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

Gold metal has been using in electronics and telecommunication industry, for example RAM(Random Access Memory)computer. The separation of gold from the RAM(Random Access Memory)computer has been done in this study. To get the maximum results in the separation of the gold used variations potential difference( 6; 9; 12 volt ) and the type of precipitant (NaHSO3 and H2C2O4) . In this study, a certain number of samples is used samples RAM(Random Access Memory)computer electrolyzed H2SO4 for 1 hour. The precipitate formed is separated from the filtrate. The precipitate was dissolved in Aqua Regia at a temperature of 70˚C for 30 minutes further diluted with Aqua DM until the volume is 50 mL . Au concentration was analyzed by AAS(Atomic Absorption Spectrophotometry)and Au deposited with NaHSO3 and H2C2O4 . Based on the analysis result, the maximum Au concentration at the former RAM(Random Access Memory)computer is equal to 0,5054 ppm with potential 12 volt. For 5 grams of the sample , the maximum weight of Au precipitate obtained 0.97 miligrams by using H2C2O4 as a precipitant .Keyword: Au concentration, NaHSO3, H2C2O4, H2SO4
Produksi Bio - Oil Dari Biomassa Pelepah Sawit Menjadi Bio-Oil Menggunakan Katalis Co/Lempung Dengan Metode Pirolisis Edwidya Ocktaviani Armay; Syaiful Bahri; Yusnimar Yusnimar
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

Petroleum as source of fossil fuels that were not renewable energy and nearly exhausted while the consumption of energy always have been increase time by time. One of alternative energy that can solve this problem is bio-oil from biomass such as frond palm. Bio-oil can be produced through pirolysis process of frond palm using Co/Clays Cengar. The research purpose is knowing effect of the ratio of catalyst Co/Clays Cengar on yield of bio-oil that produced by pyrolisis process from frond palm. Pyrolysis used biomass 50 gram, silinap 500 ml and Co/Clays Cengar catalyst which variated by 0, 1, 3 and 5% wt on frond palm at 330oC and mixed rotation 300 rpm. The results showed that the maximum yield obtained at the level of developing of a metal catalyst Co 1% of the clay that is equal to 50 %. Thetest results obtained by the physical properties of density 1,0042 g/ml, 10,493 cSt viscosity, acid number of 0,42976 g NaOH/g sample and the flash point is 52º C. The results obtained have characteristics approaching the characteristics of standard fuel oil and bio-oil.Kata Kunci : Bio-oil, Co/Clays Cengar, Frond Palm, Pyrolysis
Penentuan Daya Jerap Karbon Aktif Dari Pelepah Sawit Terhadap Ion Fe (III) Muhammad Amri; Yusnimar Yusnimar; Sri Herlianty
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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Abstract

Waste pollution of heavy metals in the waters continue to rise every year. This can endanger the survival of living creatures that are in the vicinity. One contributor to the heavy metal waste in the waters is the result of discharges of industrial waste. One way to overcome the problem of heavy metal waste in the waters is the adsorption method using activated carbon as adsorbent. The purpose of this study was to determine the ability of activated carbon adsorption made from palm fronds to Fe (III). Manufacture of activated carbon from palm fronds, palm fronds initially in carbonation at a temperature of ± 280 0C to produce carbon / charcoal. Carbon generated at screening with a particle size of -100 + 200 mesh, then the activation by the chemical variation of the concentration of the activator Na2CO3 4%, 5% and 6% w/v, and carbon also in activation of physics with an activation temperature variation 300 0C, 500 0C and 700 0C. Activated carbon produced in the characterization includes: moisture content, ash content and adsorption of I2, and the data that was obtained in comparison with Standard SNI 06-3730-95. Activated carbon adsorption capability of the ion Fe (III) is determined at various concentrations 20, 40, 60, 80 and 100 mg/L. Based on the results of the characteristics of activated carbon meet ISO standards 06-3730-95, while the activated carbon adsorption capacity of the ion Fe (III) the maximum is activated carbon in the activation of physics at the activation tempetatur 700 0C, for the ion concentration of Fe (III) 80 mg/L, the activated carbon adsorption capacity is equal to 5,872 mg Fe (III)/gr activated carbon. Keywords : Activation , Activated Carbon, Ion Fe (III)
Pemisahan Emas Pada VGA (Video Graphics Array) Komputer Dengan Metode Leaching Dan Presipitasi Juliani Dafis; Yusnimar Yusnimar; Drastinawati Drastinawati
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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Abstract

The development of electronics technology is correlated to increasing use of electronic device, it causes a buildup of electronics waste every year. An example is Video Graphics Array (VGA) Computer still has the precious metals components. In this research, gold separation process of VGA computer has been done by using variation ratio samples : HNO3 solvent (1: 3; 1: 6; 1: 9) and two precipitants NaHSO3 and H2C2O4. Initially VGA cut into size from 5-10 mm, then it was leaching by HNO3 solvent at 70 ℃ for 1 hour. Afterwards filtrate is separated from residual sludge. Residual sludge was leaching using Aqua regia at 70 ℃ for 30 minutes to dissolve gold. Then, Au filtrate is obtained are diluted using Aqua DM until the volume 50 mL. The concentration Au is analyzed by AAS (Atomic Absorption Spectrophotometer). In the precipitation process NaHSO3 and H2C2O4 were applied in order to get Au solid. Result Au content of VGA is 76.2 ppm. For 5 gram amount of sample is obtained 1.07 grams Au solid using NaHSO3 as a precipitant.Keywords: Au, Computer VGA, leaching, precipitant,
Konversi Nila Nipah (Nypa Fruticans Wurmb) Menjadi Bio Oil Dengan Teknologi Pirolisis Menggunakan Katalis Ni/Lempung Muhammad Ismet; Syaiful Bahri; Yusnimar Yusnimar
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

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Fuel oil is a natural resource, due that needsare very important. Fuels are nonrenewable energy sources. Bio-oil is one of thealternative energy solutions that can be used as a subtitute for petroleum. Riau province has palm plantation area of 75459.26 Ha and is also rich in natural resources such as the potential of natural clay. Bio-oil can be produced from a palm frond by using pyrolisis process with catalyst Ni/clay. This study aimed to determine the effect of the catalyst Ni/clay variation toward the biomass, the influence of variations developing of metal toward clay and characterization of physical and chemical properties to the yield of bio-oil product. in this study the pyrolisis process carried out at a temperature of 320°C, 500 ml silinap, biomass 50 grams with the size of -100+200 mesh sieve and the variatio of catalyst Ni/clay by 0,4%, 0,5%, 0,6% w/w to the biomass and Ni metal carrier variation 0f 0%, 1%, 2%, 3% w/w of the clay. The research product bio-oil 72.072% of yields in 0,6% of catalyst and 1% of metal. The result of the analysis of physical properties of bio-oil obtained is the 0.924 gr/ml density, 2.351 cSt viscosity, acid number 70.218 mg NaOH/gr sample and 50°C flash point. Chemical properties analysis of bio-oil using GCMS (Gass Chromatography-Mass Spectroscopy) on the use of catalyst 0,6% and metal 1%obtained five dominant chemical compound that is 2-Methylpropene 2.84%, 2,4,4-Trimethyl-1-pentene 3.84%, 2,2,4,4-Tetramethylpentane 6.78%, cyclohexane,1bromo-4-methyl 8.13% and 2,4,4-Trimethyl-2-penten 5.11%.   Keyword: Bio-oil, pyrolysis, sheath Nipah, catalyst Ni / clay, Yield.
Penentuan Model Isoterm Adsorpsi Ion Cu(II) Pada Karbon Aktif Tempurung Kelapa Khamaluddin Aditya; Yusnimar Yusnimar; Zultiniar Zultiniar
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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Abstract

Copper metal (Cu2+) pollution gives bad impact for society life. One effort to reduce the content of copper metal by using adsorption process. This research used physical activationmethod with temperature at 700oC for 3 hours. This research purpose is to determine the absorptive capacity of the coconut shell activated carbon adsorption and the appropriateadsorption isotherm models. A total of 1 g of coconut shell activated carbon mixed with a solution of CuSO4 with a volume of 100 ml at various concentrations (10, 15, 20, 25 and 30ppm). Then the solution was analyzed by AAS to determine the concentration of Cu ion remaining. The Results showed that the ion adsorption of Cu (II) by a coconut shell activatedcarbon reached equilibrium after a contact time of 90 minutes, and adsorption occured by following the Freudlich adsorption models with correlation coefficient (R2) was 0.9848 and the maximum value of adsorption was 99,96 % mg Cu (II) / g adsorbent.Keywords : Activated Carbon, Adsorption, Ion Cu(II), Coconut Shell and Physics Activation
Transesterifikasi Minyak Goreng Bekas Dengan Katalis ZnO Sintesis Dari Presipitan Zinc Oksalat ; Pengaruh Variasi Rasio Mol Reaktan Dan Jumlah Katalis Deni Afrika; Yusnimar Yusnimar; Syelvia Putri Utami
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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Abstract

Curently various types of catalysts have been investigated for the production of biodiesel from high free fatty acid feedstock. Waste Cooking Oils with high free fatty acid (FFA) can be used as a feedstock for biodiesel production. Various types of catalysts have been investigated for the production of biodiesel from high FFA feedstock. This research aims to sinthesize ZnO catalyst from ZnC2O4 presipitation. This catalyst was used for transesterification of CPO with high FFA into biodiesel. Then, the effect of variations in mole ratio of reactants and variations in the amount of catalyst on the yield of biodiesel produced will be studied. FFA content in the waste cooking oils is 8,16%. Therefore, Biodiesel production process was carried out with a two-stage reaction that was esterification and transesterification. The esterification reaction was held time 60 minutes at temperatures 65oC with H2SO4 catalyst as much as 1% w/w of oil. The transesterification reaction was held time 120 minutes at temperatures 65oC; the mole rato of oil : methanol were 1:6, 1:12, 1:18; ZnO catalyst amount were 0,3%, 0,4% and 0,5%; . The higest yield obtained was 92,12% in process with 1:18 in oil : methanol mole ratio and 0,5% catalyst amount. The produced biodiesel has density 867,8 kg/m3, viscosity 5,25 mm2/s, flash point 175oC, acid value 0,547 mg-KOH/g-biodiesel, saponification value 40,766 mg-KOH/g-biodiesel and alkyl ester content 98,647%.Keywords: biodiesel, esterification, transesterification, waste cooking oils, ZnO
Penentuan Daya Jerap Karbon Aktif Dari Polong Akasia Terhadap Ion Cr(VI) Run Bunga Dewi; Yusnimar Yusnimar; Rozzana Sri Irianty
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

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Activated carbon which has a high adsorption capacity for the adsorbate. Activated carbon can be produced from materials containing carbon or charcoal was treated in a certain wayto gain more surface area. The research goal was to process acacia pod into a activated carbon and determine the adsorption power of the ion Cr (VI). The dried acacia pod was carbonated in a sealed drum to produced charcoal / carbon. Charcoal was crushed into aparticle size of 100 mesh. Charcoals with a size of 100 mesh were activated physically and chemically. The activation process of carbon physically carried out at a temperature of 200,300 and 400 ºC. While chemically, activated carbon was done by used Na2CO3 as an activator. Carbon/charcoal was soaked in a solution of Na2CO3 for 24 hours. Furthermore, itwas separated from the solution of Na2CO3 and dried at a temperature of 105 ºC. Activated carbon obtained both physically and chemically characterized to determine such as ashcontent, moisture content and adsorption power of the metilen blue solution and Cr(VI) in solution. The results showed that the carbon which activation under a temperature of 400 ºCwas the best activated carbon has a water content of 1.5%, ash content of 2.3%, adsorption power of the metilen blue 99,81% and the adsorption power of the ion Cr(VI) 87,72%.Keywords: Adsorption, Physics Activation, Chemical Activation, Activated Carbon and acacia pod
Pembuatan Biodiesel Dari Sawit Off Grade Dengan Menggunakan Katalis Zno Komersial Pada Proses Transesterifikasi Yulva Gemy; Sri Helianty; Yusnimar Yusnimar
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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Abstract

Vegetable oil with high FFA derived from off grade palm oil can be used as raw material for making biodiesel. ZnO is currently developed as a heterogeneous catalyst in the reaction of biodiesel production. This research aimed to produce biodiesel from low-quality raw materials and determine the effectiveness of the process by looking at the effect of process conditions such as reaction temperature, mole ratio and catalyst concentration on the yield of biodiesel. The process of making biodiesel is done with two stages of the reaction of esterification and transesterification reactions. Esterification reaction carried out at a temperature of 65oC, the mole ratio of oil: methanol 1:12, and 1% catalyst concentration. Variations in operating conditions transesterification reaction include reaction temperature (45oC, 55oC, 65oC), the mole ratio of oil: methanol (1:10, 1:14, and 1:18), and catalyst concentration (0.5%, 1%, and 2% / w). The highest yield of biodiesel obtained as much as 94.26% under the conditions of reaction temperature of 65oC, the mole ratio of oil: methanol 1:18, and 2% of ZnO catalyst concentration. The characteristics of biodiesel produced in the form of density, kinematic viscosity, acid number and flash point are in according to the standards of Indonesian biodiesel.Keywords: biodiesel, esterification, off grade palm oil, transesterificationi, ZnO
Pemanfaatan Minyak Jelantah Menjadi Biodiesel Dengan Katalis ZnO Presipitan Zinc Karbonat : Pengaruh Waktu Reaksi Dan Jumlah Katalis Hamsyah Adhari; Yusnimar Yusnimar; Syelvia Putri Utami
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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Abstract

Biodiesel is a highly potential material to replace diesel fuel. Renewable and environmentally friendly. Waste cooking oil can be used as raw material for making biodiesel. Free fatty acid levels are high in waste cooking oil requiring pretreatment (esterification) in the process of making biodiesel. In this study transesterification reaction conducted by catalyst synthesized ZnO of ZnCO3. This study aims to determine the effect of variations in reaction time and variations the amount of catalyst to yield biodiesel produced. After esterification of free fatty acid levels in the oil can be lowered from 6.09% to 1.02%. The transesterification reaction was held at temperatures 65oC; The mole ratio of oil and methanol is 1:18; ZnO catalyst amount is 0,5%, 0,6% and 0,7%; reaction time is 50, 75, and 100 minutes. The highest biodiesel yield obtained was 94.31% on the amount of catalyst 0.7% w / w of cooking oil with a reaction time of 100 minutes. Characteristics of biodiesel produced, namely: density and viscosity at a temperature of 40°C is 866,50 kg/m3 and 5,74 mm2/s, The flash point is 190oC, acid value 0,60 mg-KOH/g-biodiesel and the content of alkyl ester 98,42%.Keywords: Biodiesel, Waste Cooking Oil, Esterification, Transesterification, ZnO
Co-Authors , Deviona, , Ahmad Fadli Aisyah Rani Alfarisi, Cory Dian Alhabsy Affif Aman, Azka Amun Amri Andi Muhammad s, Andi Muhammad Annisa Ulhasanah Apriliani, Prapita Aqilla Cahyani Ardiansyah, M. Frendy Armaini, Armaini Arofi, Habib Barata Aditya Prawiranegara Bhaskoro A. Muthohar Chairul Chairul Chairul Chairul, Chairul Darliansyah, Danny Darmiyati, Siti Deby Octavia Deni Afrika Desadria, Renny Desi Heltina Dian Agustin Drastinawati Drastinawati Drastinawati Drastinawati, Drastinawati E, Sutanto E, Yenie Edi Sutanto Edo Prima Arif Edwidya Ocktaviani Armay Eliza, Mutia Emelda, Retta Esti Rahmat Tini Evelyn EVELYN EVELYN Evelyn Evelyn Fadli, Deno Febri Feni Nopriza Fermi, Iwan Fitri Zulva Hasanah Hamsyah Adhari Hasby Herdinasrul Hasibuan, Muhammad Ilham Febrian Mahodum Heliyanti, Sri Heni Sugesti Idral Amri Indrawati . Indriana, Hanifah Intan Fitra Martin, Intan Fitra Irwanda, Juni Isnaini J. N. Rahman Juliani Dafis Kamarullah, Rahmat Khafid Ali Mahdi, Khafid Ali Khairat Khairat, Khairat Khamaluddin Aditya Kiki Despramita Komalasari Komalasari Komalasari Komalasari Komalasari Komalasari M. Iwan Fermi Maria Peratenta Sembiring Mashuri Mashuri Mhd Taufik Kurniawan Misrulina Misrulina Muhammad Amri Muhammad Ismet Muhammad Nur Rahim Sjam muhammad rizky, muhammad Mukhlisoh Arifah Mulyadi . Nurul Azizah Nurwijayanti Ohi, Hiroshi P. Ningendah Pebriansyah Putra Putri, Alivia Hardana Quentena, Novi Rahmadahana, Suci Rahmi Adisti Rahmi, Sri Wahdini Ramadona, Aulia Ratna Dian Armalita Restika Rahayu Reza Andreano D Ricson Rinaldi Riski Adi Mulia Rispiandi, Fadli Rizaldi Saputra Rozzana Sri Irianty Run Bunga Dewi Rusma Yanti S, Muhammad Rizki Sasmitra, Dani Sayyidhani, Muhammad Hisna Sherly Fitri Rahmadhani Silvia Reni Yenti siti rahmah Sri Helianty Sri Herlianty Sukiman Hernanda Surya Romadani SYAIFUL BAHRI Syamsu Herman Syelvia Putri Utami Tasman, Annaya Qamara Taufik Kharnofa Utama, Panca Setia Wahyu Rahmadhan Wisrayetti Wisrayetti Wulandari, Siti Rahmi Indri Yelmida Azis Yulfiana Sultana Yulva Gemy Yusra, Arif Zultiniar Zultiniar