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All Journal Reaktor Jurnal Sains dan Teknologi Mechatronics, Electrical Power, and Vehicular Technology Jurnal Sains Materi Indonesia Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Konversi Journal Of Chemical Process Engineering (JCPE) Indonesian Journal of Chemistry Communications in Science and Technology Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya Teknomekanik Unri Conference Series: Community Engagement Journal of Applied Materials and Technology Journal of Bioprocess Chemical and Environmental Engineering Science Journal of Community Engagement Research for Sustainability SAINSTEK Estungkara: Jurnal Pengabdian Pendidikan Sejarah Journal Of Chemical Process Engineering JURNAL REKAYASA KIMIA & LINGKUNGAN Journal of Engineering and Technological Sciences Rekayasa: Jurnal Penerapan Teknologi dan Pembelajaran
Amun Amri
Department Of Chemical Engineering, Faculty Of Engineering, Riau University
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering 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 Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Nursing Public Health Social Sciences Other

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Pengaruh Suhu Pembakaran Dan Konsentrasi Grafena Terhadap Karakteristik Batu Bata Suci Afrianti; Amun Amri; Rozanna Sri Irianty
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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Abstract

This research aims to produce bricks by adding few layer graphene (FLG) and studies the effects of firing temperature and graphene concentration on the characteristics of the produced bricks. The produced bricks were tested their compressive strength, porosity, morphology using the scannning Electron Microscope (SEM), X-ray diffraction (XRD) analysis and fourier transform infrared (FTIR). The brick was made by adding the few layer graphene to the clay, then mixed them and casted in size (5x5x5) cm3. The samples then dried at room temperature for a week, and fired in furnace for 1 hour at the temperature variation of 600 °C, 800 ºC, and 1000 °C with graphene concentration variations of 10 mg/ml, 20 mg/ml and 30 mg/ml. The results showed that the highest compressive strength (9 MPa) and lowest porosity (6.1%) was exhibited by brick synthesized using graphene concentration of 30 mg/ml and the firing temperature of 1000°C. The Scannning Electron Microscope (SEM) analysis results showed that the addition of graphene reduced the porosity of the brick. The X-ray diffraction (XRD) analysis results showed that a diffraction peak of few layer graphene at 25.41º and the graphene did not influenced the crystal structure of the brick. This research showed that the increase in firing temperature and concentration of graphene made the structure of the brick increasingly dense. The few layer graphene could improve mechanical strength of the brick by reduce the stress concentration and prevent the development of the cracks.Keywords : bricks, concentration, compressive strength, few layer graphene, firing, graphene, porosity
Pengaruh Molaritas Dan Jumlah Pencelupan Pada Sintesis Copper-Cobalt Oksida Berbasis Nitrat Di Atas Substrat Aluminium Sebagai Solar Selective Absorber Dengan Metode Sol-Gel Dip Coating Muhammad Iqbal; Amun Amri; Ahmad Fadli
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

Key component that determining the efficiency of a solar thermal collector is a thin layer on the surface of the collector that absorbs solar radiation selectively and convert it into heat energy or commonly called solar selective absorber (SSA). Solar selective absorber can be synthesized using sol-gel dip coating method. The purpose of this research is to know the effect variation molar of copper nitrate-cobalt nitrate and number of dipping-drying cycles to absorptance copper-cobalt coating. Pieces of aluminum with size 2x4 cm were cleaned using a solution of phosphoric acid 10% wt at temperature ±50oC for 10 minutes. Sol precursor prepared by mixing copper nitrate and cobalt nitrate in ethanol and the addition of propionic acid as a catalyst and complexing agent. The mixture was stirred for 2 hours at room temperature. The coating were synthesized by varying molar percursors (ratio 1:1) 0.1M, 0.25M, 0.4M and number of dipping-drying cycles 1x, 2x, 3x, 4x, 6x, 8x and 10x, then annealed at temperature 550 oC for 1 hour. Reflektance spectra in the area of UV-Vis-NIR show that increased cycles of dipping-drying cycles (which increases the thickness of the coating) increase the value of absorptance (α), as well as the increase in the concentration of sol precursors. The results showed that the highest absorptance value found in coatings which was synthesized using mixture copper nitrate and cobalt nitrate molar variations 0.1 M at 10x cycles (dyeing and drying) with absorptance (α) = 88.69%. Further characterization showed emitance values (ε) = 12.9%. Morphological analysis showed that the surface structure of the coating was composed of nanometer-sized particles that form the porous structure. XRD analysis showed there was no change of formed crystal structure of copper oxide and cobalt oxide by increasing temperature. Adhesion test showed the adhesi between the coating and the substrate can be categorized as very strong (5B scale ASTM D 3359)Keywords : aluminum, coating, solar selective absorber and sol-gel dip coating
Pengaruh pH Pada Proses Hidrolisis Mikro Alga Chlorella Vulgaris Menjadi Glukosa Menggunakan Enzim Selulase Windy Odelia Putri; Amun Amri; Syelvia Putri Utami
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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Abstract

Microalgae is one of the organisms can be considered as ideal and potential raw material for production of biofuels. Chlorella Vulgaris is a group of green algae that have prospect to be developed. The purpose of this research was to find the effect of pH to enzymatic hydrolysis and obtain the optimum glucose concentration on enzymatic hydrolysis on microalgae Chlorella Vulgaris. Hydrolysis was performed with the variated the conditions of pH was 5, 6, and 7 respectively. Microalgae Chlorella vulgaris was diluted using buffer citrat acid and then mixed with cellulase enzyme. Hydrolysis process was carried out for 48 hours at 100 rpm agitation. Result of experiment was tested by using spectrofotometry UV-VIS. The results showed that the increasing of pH will increased the glucose concentration until optimum condition. The optimum glucose concentration was5,35g/L at pH 6.Keyword: cellulase, chlorella vulgaris, enzymatic, glucose, pH.
Sintesa Precipitated Calcium Carbonate (PCC) Dari Kulit Kerang Darah (Anadara Granosa Dengan Variasi Konsentrasi Asam Dan Rasio CaO/HNO3 Dhini Octavianty; Amun Amri; Zultiniar Zultiniar; Yelmida Yelmida
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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The purpose of this research was production of precipitated calcium carbonate (PCC) from blood cockle shell waste using carbonation method. Carbonation method that was used to synthesis PCC was modificated carbonation method by CaO as calcination result and HNO3 reaction and then flowed the CO2 gas. The learned variable was variation of the nitric acid concentration (1,5; 2; and 2,5 M) and CaO/HNO3 ratio (14:300; 17:300; 20:300 gr/ml). The highest yield of PCC was reached from the concentration of nitric acid 2 M and ratio 14 gr : 300 ml which the yield was 84,88%. From the X-Ray Diffraction (XRD) characteristic result, able to know the crystal form that reached was vaterite which was reinforced from analysis result of Scanning Elcetron Microscopy (SEM) with the sphere partical.Key words: Blood cockle shell, carbonation, PCC, SEM, XRD
Sintesis Hidroksiapatit Dari Cangkang Kerang Darah (Anadara Granosa) Dengan Proses Hidrotermal Variasi Rasio Mol Ca/P Dan Suhu Sintesis Affandi Affandi; Amun Amri; Zultiniar Zultiniar
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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Abstract

Synthesis of hydroxyapatite (HAp) from blood cockle shell (Anadara granosa) by hydrothermal process has been successfully done. The aim of this research was to get theoptimum process condition and also to investigate the influence of the Ca/P mole ratio and the synthesis temperature toward HAp characteristic. The powder of blood cockles shell wascalcined to get CaO which then was reacted with diammonium hydrogen phosphate by using water as solvent. Hydrothermal process was done by closed system in order to avoid thesolvent be lost while heating up above the solvent’s boiling point. The samples then were characterized by using FTIR (Fourier Transform Infrared), XRD (X-Ray Diffraction), andSEM (Scanning Electron Microscopy). The functional groups were observed in the FTIR of the synthesized HAp are phosphate (PO4 3-), hydroxyl (OH-), carbonate (CO3 2-), and hydrogenphosphate (HPO4 2-). These functional groups indicate that HAp has been formed. XRD data showed the main peaks for HAp that strenghtened the truth of FTIR characterization. SEM was used to observe the morphology of the synthesized HAp that consisted of agglomerates. Through analysis of the EDXA (Energy Dispersive X-Ray Analysis), the Ca/P mole ratio of the synthesized HAp could be counted where the result is 2. EDXA and SEM analysis were done together due to EDXA and SEM are one device. The best condition in this synthesis occured at Ca/P mole ratio 1,60 and the synthesis temperature 160oC.Keywords: blood cockle shell; hydroxyapatite; hydrothermal
A Pemberdayaan Santri di Rumah Amal MIS Hubbullah Pekanbaru Melalui Produksi Nugget Ikan Patin Silvia Reni Yenti; Amun Amri; Ahmad Fadli; Zultiniar Zultiniar; Sunarno Sunarno; Wisrayetti Wisrayetti
Journal of Community Engagement Research for Sustainability Vol. 1 No. 2 (2021): September
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (297.409 KB) | DOI: 10.31258/cers.1.2.74-80

Abstract

Counseling activities and training on making catfish nuggets have been carried out for the students at the MIS Hubbullah Charity House Pekanbaru. The activity was carried out by lecturers at the Department of Chemical Engineering, FT UNRI who were assisted by students. Evaluation of activities is carried out both before and after activities are carried out. From the results of the activity evaluation, it was found that there was an increase in the understanding and ability of participants in processing catfish into fish nuggets by 94.4%. Based on a follow-up survey conducted by the service team, it was found that the students of MIS Hubbullah continued the activities of making these catfish nuggets and even made a label for the product packaging of catfish nuggets as one of their business units.
The Oriented Attachment Crystal Growth Model in Hydrothermal Synthesis of Magnetite (Fe3O4) Nanoparticles Ahmad Fadli; Amun Amri; Esty octiana sari; Sukoco Sukoco; Deden Saprudin
Journal of Applied Materials and Technology Vol. 1 No. 1 (2019): September 2019
Publisher : AMTS and Faculty of Engineering - Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/Jamt.1.1.15-19

Abstract

The magnetite nanoparticles (Fe3O4) are very promising nanomaterials to be applied as drug delivery due to their excellent superparamagnetic, biocompatibility and easily modified surface properties. Those properties are influenced by the structure and size of the material which can be controlled by studying the evolution of crystal growth. The purpose of this research is to study the evolution of crystal growth of magnetite nanoparticles in the hydrothermal system and determine the crystal growth kinetics using the Oriented Attachment Growth model. Magnetite nanoparticles were synthesized using a hydrothermal method from FeCl3, citrate, urea and polyethylene glycol at 210?C for 1 - 12 hours at a various concentration of FeCl3 (0.05 M, 0.10 M, and 0.15 M). The characterizations were conducted by X-ray Diffraction (XRD), Transmission Electron Microscope (TEM), Particle size analyzer (PSA), and Vibrating Sample Magnetometer (VSM). The XRD difractogram indicated that the magnetite was begun to form at 3.5 hours synthesis. The crystallinity and the crystal size of magnetite rose with reaction time. The diameter of magnetite crystals was in the range of 9.4-30 nm. Characterization by TEM showed that the particles were formed from a smaller particles which were then agglomerated. The PSA characterization showed that the distribution of diameter size enlarged with the enhancement of concentrations. VSM result showed that the magnetite nanoparticle has superparamagnetic properties. The magnetite crystal growth can be fitted by the Oriented Attachment Growth model with an error of 29%.
Kesetimbangan Cair-Cair Sistem Polipropilena dan Maleated Natural Rubber Russita Martani; Bahruddin Bahruddin; Amun Amri
Journal of Chemical Process Engineering Vol 4, No 2 (2019)
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1351.269 KB) | DOI: 10.33536/jcpe.v4i2.333

Abstract

Pada campuran polipropilena (PP)-maleated natural rubber (MNR), MNR berfungsi sebagai compatibilizer yang melakukan modifikasi terhadap permukaan matrik PP untuk memudahkan masuknya filler sehingga dihasilkan campuran yang lebih kompatibel. Tujuan dari penelitian ini adalah untuk menentukan kemampuan campur maleated natural rubber (MNR) dalam polipropilena (PP) pada berbagai variasi suhu. Penelitian diawali dengan prediksi kesetimbangan cair-cair sistem PP-MNR dengan menggunakan metode UNIFAC dilanjutkan dengan validasi model kesetimbangan. Validasi model kesetimbangan cair-cair sistem PP-MNR diawali dengan mencampurkan karet alam dan maleic anhydride (MAH) dalam internal mixer untuk penyiapan MNR. MNR yang telah disiapkan lalu dicampurkan dengan PP dalam internal mixer dengan kadar MNR dan temperatur proses divariasi berdasarkan prediksi kesetimbangan cair-cair UNIFAC. Kemudian campuran PP-MNR dianalisa dengan uji difference scanning calorimetry (DSC). Hasil uji DSC digunakan untuk melakukan validasi hasil perhitungan kesetimbangan cair-cair UNIFAC. Hasil perhitungan UNIFAC merupakan kesetimbangan cair-cair sistem PP-MNR berupa kadar MNR dan temperatur proses pencampuran. Pada campuran ini MNR berfungsi sebagai compatibilizer. Kadar MNR pada campuran adalah 4,4%–11,16% dan temperatur proses adalah 170 o C–210 o C. Semakin besar kadar MNR dalam campuran, semakin rendah suhu proses pencampuran. Hasil validasi uji DSC sesuai dengan prediksi kesetimbangan cair-cair sistem PP-MNR menggunakan metode UNIFAC.
Pembuatan paving blok geopolimer dari limbah abu terbang batu bara (Fly Ash) di Kelurahan Pematang Kapau Tenayan Raya Pekanbaru Aman Aman; Amun Amri
Unri Conference Series: Community Engagement Vol 1 (2019): Seminar Nasional Pemberdayaan Masyarakat
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/unricsce.1.223-227

Abstract

The use of coal as fuel for PLTU Tenayan Raya Pekanbaru produces waste in the form of fly ash and bottom ash. Fly ash has high silica and alumina content which has the potential to replace cement. The resulting fly ash is partly not utilized and is piled up in the ash disposal area and has the potential to cause water and soil pollution. The increasing use of coal, the environmental burden will be heavier and needs to be anticipated by finding optimal utilization of coal fly ash waste. Based on the description above, community service activities have been carried out in Pematang Kapau Village, Tenayan Raya Pekanbaru District in the form of socialization and training on the use of fly ash waste as a material for making geopolymer paving blocks without using portland cement which has been used in the process of making paving blocks and other building materials. From the results of the above training activities obtained geopolymer paving blocks with specifications rectangular shape with a length of 21 cm, width 10 cm and height 8 cm, gray color and the test results obtained compressive strength of 40.87 MPa into SNI quality standard A.
Pemanfaatan sampah styrofoam untuk pembuatan lem lateks dalam upaya mengurangi limbah styrofoam di TPA Muara Fajar Timur Kecamatan Rumbai Pekanbaru Desi Heltina; Amun Amri; Panca Setia Utama; Aman Aman
Unri Conference Series: Community Engagement Vol 2 (2020): Seminar Nasional Pemberdayaan Masyarakat
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/unricsce.2.72-76

Abstract

Various types of waste are found in TPA Muara Fajar Timur, Rumbai District, Pekanbaru. One of the waste that does not decompose is styrofoam. If styrofoam is not handled seriously, it will have an impact on the environment and endanger the surrounding community. Styrofoam waste contains polystyrene foam which contains hazardous materials for health and the environment. For this reason, efforts should be made to handle the styrofoam waste, namely by recycling styrofoam into useful and economical products. One of the uses of Styrofoam waste is making latex glue. Latex glue is a product that is widely used by the community so that if it is produced it will be able to meet the needs both for themselves and for the needs of the community. Latex glue is made from styrofoam by adding toluene and surfactants (sodium lauryl sulfate / SLS) or by adding gasoline to Styrofoam.The results obtained were that the community could understand and be able to make latex glue. The results of the success questionnaire show the high interest and benefits of this activity. This shows that this activity has been successfully implemented in Muara Fajar Timur Village, Rumbai District, Pekanbaru.
Co-Authors AA Sudharmawan, AA Abdul Rasyid Amrin Abid, Hussein Rasool Achmad Noerkhaerin Putra Adrianto Ahmad Affandi Affandi Ahmad Fadli Ahmad Fadli Ahmad Fadli Aisyah Dewi Ranti, Aisyah Dewi Akbar, Irfan Sarhadi Alfarizi, Cory Dian Ali Novia Altarawneh, Mohammednoor Aman aman Aman Aman Aman, Azka Aminati, Ikha Setya Amir Awaluddin Amri, Evelyn Andrizal Andrizal Ani Suryani Anjani, Putri Annisa Rahmat Apriadi Rio Ari Sandhyavitri Arisman Adnan Assylzhan, Mazhibayev Azhar, Muhammad Rizwan Azhari Harahap Azridjal Aziz Bahri, Ahmad Syaiful Bahruddin Bahruddin Bahruddin Bahruddin Bahruddin Benny Ahmadi Bona Tua Chairul Chairul Chairul Damayanti, Elok Deden Saprudin Dedeng Hermoyo Derry Hanriansyah Pratama Desi Heltina Dhini Octavianty Dimas Nofriyan Dwi Setyo Pambudi, Yoyok Ekawati, Lestari Elmira, Kambarova Erliza Hambali Esty Octiana Sari Esty Octiana Sari Eva Rantika Evelyn Evelyn Evelyn Evelyn Evelyn Evi Nadhifah Fabryza, Dhina Fajar Restuhadi Fajrina Qaishum Fakhri, Fakhri Fauziyah, Hidayatul Febri Riandi Febrizal Ujang Febryza, Dhina Feby Pratama Nugraha Fesya Putri, Andini Firman syah Fitri, Lara Ismano Fitria, Anisa Fri Murdiya, Fri Gilang Fathurrahman Gilda Miranda Gussyafri Hasnul Bustaman Hawa, Karfika Ainil Hawa, Karfika Ainil Hendri, Yola Bertilsya Hendro Ekwarso Heni Sugesti Heri Rahmana Indra Yasri Irwan Irwan Is Sulistyati Isna Rahma Dini Iwantono Iwan Barnawi Jhon Armedi Pinem Jiang, Zhong Tao Jumbri, Khairulazhar Karfika Ainil Hawa Khairat Khairat Khairat Khusnul Ain Komalasari Komalasari Komalasari Komalasari Lisa Legawati Lucy Rahmawati M. Fauzan Akbar M. Iwan Fermi Malindo, Muhammad Eri MAYANG SARI Mayangsari Mayangsari Meliagustin, Adilla Michael Hutapea Miran, Hussein A. Mochamad Reizal Ath Thariq Monita Olivia Muhamamad Rizky Zuriadi Muhammad Shalahuddin Muhammad Shalahuddin Muhammad Sugandi Muhammad Zaqi Muhdarina Nisa Mulya Novan, Andre Novia Azzahra Nurhayati Nurwijayanti Nurwulandari Saputri Ohi, Hiroshi Oktariandi, Vito Paul Destin Purba Peratenta Sembiring, Maria Perdana, Rendy Putra Peter Peter Prawiranegara, Barata Aditya Puji Rahmawati Dwi Sukma Putra, Rahmat Ade Putri Arini Putri Husni Hidayah, Putri Husni Putri, Diana Eka Rahayu, Ricky Puji Rahmadahana, Suci Rahman, M. Mahbubur Rahmansyah Rahmansyah Rahmat Kurniawan Nasution Rahmi, Sri Wahdini Ramadhan Ramadhan Rani Handayani Reni Yenti, Silvia Reski, M. Rifati Hanifa Rino Rinaldi Rizka Aulia Hardi, Rizka Aulia Rizky, Muhammad Dian Rozanna Sri Irianty Russita Martani Russita Martani Rusydy ' Salma Liska Saputra, Adika Saputra, Fakhri Sari Rahma Yanti Sari, Esty Octiana Sarma, Deki Septian, Handika Setia Utama, Panca Setiani Br Manurung Silvia Reni Yenti Silvia Reni Yenti Suci Afrianti Sukoco Sukoco Sukoco Sukoco Sunarno SUNARNO Sunarno Sunarno SYAIFUL BAHRI Syamsu Herman Syelvia Putri Utami Syukri Hamdani Tafrikhatul Walidah Tao Jiang, Zhong Utama, Panca Setia Voadi, Salsabilla Diva Wilda Zakiah Windy Odelia Putri Wira Irawan Rossani Wisrayetti Wisrayetti Wisrayetti Wisrayetti Wisrayetti, Wisrayetti Wulandari, Revika Yang, Chun-Chen Yelmida Azis Yolanda, Yogi Yopalim Zanstra Yosi Alwinda Yosi Alwinda, Yosi Yusnimar Sahan Z Zulfansyah Zikri, Ahmed Zuchra Helwani, Zuchra Zultiniar Zultiniar Zultiniar Zultiniar Zultiniar Zultiniar Zultiniar, Zultiniar Zuqni Meldha