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All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Jurnal Teknik Unri Conference Series: Community Engagement Journal of Applied Materials and Technology Journal of Bioprocess Chemical and Environmental Engineering Science Jurnal Teknologi & Rekayasa Sipil International Journal of Renewable Energy Development JURNAL REKAYASA KIMIA & LINGKUNGAN
Edy Saputra
Chemical Engineering Department, Riau University, Kampus Bina Widya KM 12,5 Pekanbaru 28293
Arts Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Sintesis ZSM-5 Menggunakan Silika Presipitasi Dari Fly Ash Pabrik CPO Rio Saputra; Edy Saputra; Yelmida Yelmida
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

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Abstract

Palm fly ash is waste in the palm oil industry. Palm fly ash has high content of silica. ZSM-5 is one of synthetic zeolite which used as catalyst. It can be synthesized from silica and alumina using hidrothermal method. Source of silica that can be used to ZSM-5 synthesis are sodium silicate, gelled silica and precipitated silica. the purpose of this research is to synthesis ZSM-5 using precipitated silica hydrothermally. The result was analyzed using FTIR. ZSM-5 can be synthesized using precipitated silica hydrothermally. Based on infrared spectrum,the product synthesis shows four characteristic of ZSM-5 characters.Key words : fly ash, silica, hydrothermal and ZSM-5
Adsorpsi Zat Warna Rhodamine-B Menggunakan Fly Ash Sawit Yang Dimodifikasi Dengan NaOH Sebagai Adsorben Charismayani Charismayani; Edy Saputra; Ahmad Fadli
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

Rhodamine B contributes significantly to environmental pollution, because it is nonbiodegradable, toxic and harmful to the environment. One effort to reduce the amount of Rhodamine B is the adsorption process. The purpose of this study to determine the effect of adsorption temperature, pH, adsorbent mass. Knowing the optimum conditions for reducing the levels of dye in the water, as well as determine the adsorption equilibrium modelsRhodamine B using fly ash oil modified with 1.4 NaOH as an adsorbent. fly ash modification processes are done by mixing fly ash and NaOH in the ratio 1: 4. The adsorption process isconducted by mixing fly ash oil and pH solution of rhodamine B. The optimum conditions for reducing the levels of rhodamine B in water is the adsorbent mass of 5 g/L, temperature of45°C and pH 2. Thermodynamic data such as ΔH, ΔG and ΔS were calculated. And the mechanism of rhodamine B dye adsorption by fly ash oil is dominated by Freundlich isotherm models representing physical adsorption.Keyword: Adsorption, Rhodamine B, Fly Ash, Isothermal Adsorption
Pembuatan Biodiesel Dari Cpo Off Grade Menggunakan Reaktor Membran (Variasi Katalis Dan Fraksi Mol Umpan Enang Vovilya; Syarfi Syarfi; Edy Saputra
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

Membrane reactor is an alternative technology that is used in the manufacture of biodiesel, one of the advantages that the reaction and separation process takes place in a single stage simultaneous. This research aims to study the effect of the variation of the catalyst and mole ratio feed CPO off grade - methanol in biodiesel production, a pretreatment process performed on the raw materials that aim to reduce the FFA content CPO off grade, the results obtained pretreatment FFA content of 0.79%, then performed transesterification process which was held in a membrane reactor with a variation of the mole ratio of CPO off grade -methanol 1:12, 1:18, and 1:24, the concentration of the base catalyst 1% -wt, 1.5% -wt and 2% -wt, pressure transmembrane 2 bar and a temperature of 60 oC process. The results showed biodiesel production using membrane reactor reached 72.02% yield on the condition of the mole ratio of 1:18 with a concentration of 2 %-wt, characteristics of biodiesel produced meets the quality standards of biodiesel in Indonesia including biodiesel, densityis 860-884 kg/m3, viscosity of biodiesel is 5.14 to 5.76 mm2/s, Flash Point is 158-161 °C, Acid Numberis 0.62 to 0.75 mg-KOH/g.Keywords: biodiesel, CPO off grade, membrane reactor, mol ratio, catalyst concentration.
Kuat Tekan Mortar Geopolimer Abu Terbang Hybrid menggunakan Semen Portland Miguel Felix Wijaya; Monita Olivia*; Edy Saputra
JURNAL TEKNIK Vol. 13 No. 1 (2019): Edisi April 2019
Publisher : JURNAL TEKNIK UNILAK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/teknik.v13i1.2914

Abstract

Geopolimer hybrid dibuat dengan mengaktifkan abu terbang menggunakan alkali aktivator dan semen portland sebagai bahan pengganti sebagian abu terbang untuk perawatan pada suhu ruang. Penelitian ini betujuan untuk mengkaji kuat tekan mortar geopolimer abu terbang hybrid dengan menggunakan semen Portland, yaitu OPC (Ordinary Portland Cement) dan PCC (Portland Composite Cement). Prosedur penelitian dimulai dengan pengujian karakteristik material yang digunakan, yaitu abu terbang dan agregat halus. Abu terbang yang digunakan berasal dari PLTU Ombilin Padang, Sumatera Barat. Sedangkan, agregat halus yang digunakan berasal dari Teratak Buluh, Kampar. Larutan aktivator yang digunakan NaOH 10M dan 12M, rasio modulus (Ms) 1,5 dan 2,5. Persentase penggantian abu terbang dengan semen yang digunakan adalah 10% dan 15%. Benda uji mortar berbentuk kubus berukuran 5x5x5 cm. Pengujian yang dilakukan meliputi uji kuat tekan mortar. Pengujian kuat tekan dilakukan pada umur 7 hari dan 28 hari perawatan suhu ruang. Hasil pengujian kuat tekan didapat nilai optimum pada mortar geopolimer abu terbang hybrid adalah variasi NaOH 10M, Ms 2,5 dan penggantian sebagian abu terbang dengan semen sebesar 15% pada umur 7 hari dan 28 hari perawatan suhu ruang, yaitu sebesar 8,27 MPa dan 13,33 MPa menggunakan OPC. Sedangkan, mortar geopolimer hybrid menggunakan PCC pada umur 7 hari dan 28 hari, yaitu sebesar 6,27 MPa dan 11,47 MPa. Berdasarkan hasil pengujian tersebut disimpulkan mortar geopolimer abu terbang hybrid menggunakan Ordinary Portland Cement (OPC) memiliki kekuatan tekan yang lebih tinggi diba
Pembuatan pupuk organik dari limbah agro industri sebagai alternatif pengganti pupuk sintetis Komalasari Komalasari; Evelyn Evelyn; Edy Saputra; Syelvia Putri Utami
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.1.506-510

Abstract

Farm and agro wastes from area which population has their livehood from farming and agriculture will result in the environmental and health issues if there is lack treatment on those wastes. One of the solutions to overcome these problems is to convert farm and agro wastes into organic fertilizer, which is produced from living substances weathering (plants and animals). Organic fertilizers are available in the form of solid or liquid and contain a lot of organic materials than nutrient levels, thus can improve plant growth. Other advantages of organic fertilizer are cheaper than synthetic ones, environmentally friendly, and are able to decrease negative effects of chemical fertilizers. Organic fertilizer can be made individually or in group of people. The objectives of this activity are to introduce the knowledge and train rural community of Kecamatan Rambah Hilir, Desa Pasir Utama Kabupaten Rokan Hulu, Provinsi Riau in making organic fertilizer using farm and agro wastes. The methods use in this activity are through socialization and training on making organic fertilizer from farm and agro wastes to Desa Pasir Utama community. Organic fertilizer was made by mixing cow manure with straw cuts, followed by addition of palm sugar activated effective microorganisms 4 (EM4). The mixture was left to incubate for 4 weeks and aerated every three days to allow good fermentation. This community service activity supports government program in encouraging growth of reusing farm and agricultural wastes that will increase agricultural productivity of rural community.
Pembuatan Biodiesel Dari Minyak Biji Kapuk (Ceiba Pentandra) Dengan Katalis Lempung Teraktivasi; Pengaruh Kecepatan Pengadukan Erlisa Yanuari Putri; Syaiful Bahri; Edy Saputra
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

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Abstract

Biodiesel producted by transesterifiation reaction which on energy source. Biodiesel was developed in Indonesia as an anticipatis of energy crisis problem suppported by goverment national energy policy. This research is aimed to make biodiesel from cotton seed oil, studying the effect of agitation speed to the amount of biodiesel produced and determined the best catalyst activated by acid or base, and determined the characteristics of biodiesel produced. The transesterification process was occured at a temperature of 60oC, on weight of oil 100 grams, reaction time 1,5 hours, mole ratio of oil to methanol 1 : 9, catalyst concentration 0,5% -weight of oil for varions of agitation rate 400, 500 and 600 rpm, and variations of catalyst acid 0,47, 0,62 and 0,78% and alkaline activated with a concentration of 0,33, 0,44 and 0,66%. From the result was obtained the highest biodiesel yield of 95,45% for alkaline activated 0,66% for agitation speed of 400 rpm. Characterization of physical properties of biodiesel obtained here density of 878 kg/m3, 3,03 mm2/s kinematic viscosity, acid number 0.34 mg KOH/g sample, and the flash point 195oC.Keywords: biodiesel, clay catalysts, activation of acids and bases, transesterification
Pembuatan Biodiesel Dari Minyak Biji Kapuk (Ceiba Pentandra) Dengan Katalis Lempung Teraktivasi; Pengaruh Waktu Reaksi Terhadap Yield Biodiesel Nurlis Nurlis; Syaiful Bahri; Edy Saputra
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

Research on production biodiesel from kapok seed oil (ceiba pentandra) using an activated clay catalyst has been performed. It aimed to determine the effect of an activated clay catalyst on producing biodiesel, its quality and to study the effect of reaction time. Clay catalyst was activated by H2SO4 0.47%, 0.62%, 0.78% and NaOH with a concentration of 0.33%, 0.44%, 0.66%. Esterification with methanol in the ratio 1:12 with the addition of H2SO4 as much as 1% of the weight of oil. The next transesterification reaction, the kapok seed oil is reacted with methanol in the ratio of 1: 9 with the acids and bases activated clay catalyst. The reaction temperature of 60 °C, various of reaction time 1 hour, 1.5 hours and 2 hours. The results showed that the use of an activated clay catalyst H2SO4 0.78%, the reaction time of 1.5 hours to produce the highest yield 92.18%. Physical characteristics of biodiesel were obtained density 869 kg/m3, kinematic viscosity of 2.67 cSt, the acid number of 0.45 mg KOH/g sample and the flash point of 209oC. From the results was obtained biodiesel produced in compliance with the SNI 7182: 2015.Keywords: activation, biodiesel, clay, kapok seed oil, transesterification
The Effect of Portland Cement on Fly Ash Bottom Ash Geopolymer Hybrid Concrete Exposed to Peat Water Environment Monita Olivia; Rudy Satriya Pratama; Ferisma Ratu Giri; Iskandar Romey Sitompul; Alfian Kamaldi; Gunawan Wibisono; Edy Saputra
Journal of Applied Materials and Technology Vol. 3 No. 2 (2022): March 2022
Publisher : AMTS and Faculty of Engineering - Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/Jamt.3.2.24-33

Abstract

Geopolymer hybrid concrete is prepared by activating fly ash bottom ash with an alkaline solution and curing with Ordinary Portland Cement (OPC). OPC could be added to the mixture to increase the reaction, promote hydration, and assist in curing at room temperature. Peat water is an acidic organic environment that may reduce the durability of concrete. The purpose of this research is to determine the effect of Portland cement on the properties of FABA geopolymer hybrid concrete exposed to peat water. Portland cement was used in geopolymer as an additive and a substitute. Compressive strength, porosity, and weight change were evaluated for both mixtures. The NaOH molarities were 10, 12, and 14M, the NaOH/sodium silicate ratios were 1.5, 2.0, and 2.5, and the Ordinary Portland Cement percentages were 0, 10, and 15%. Specimens were exposed to peat water for up to 91 days following 28 days of room temperature curing. The geopolymer mixture with 10M NaOH, 2.5M Ms, and 15% OPC had the highest compressive strength and the lowest porosity. The FABA geopolymer hybrid with OPC had a slightly greater compressive strength and a lower porosity than the geopolymer containing OPC as a cement replacement material. In addition, weight change is more stable in geopolymers containing OPC. Based on the performance of both mixes in peat water, it is recommended to use OPC as an additive in FABA geopolymer hybrid concrete.
Sintesis Kulit Telur Ayam/Fly Ash Menjadi Katalis Cao/Fly Ash Untuk Reaksi Transesterifikasi Minyak Sawit Off Grade Menjadi Biodiesel Desly Fadilla Simbolon; Zuchra Helwani; Edy Saputra
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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Abstract

Heterogeneous solid base catalyst by modificated Eggshells through calcination, hydration, dehydration methods with iron powder through impregnation method to load calcium oxide with eggshells as precursor. The catalyst with the highest activity is obtained when the calcination temperature of 900°C and the calcination time of 3 hours under transesterification reaction conditions of a molar ratio of methanol/oil 6:1, catalyst dosage of 6% by weight, temperature of 70 °C for 2 hours with yield biodiesel results reached 86.20%.Keyword: biodiesel, calcination, calcium oxide, catalysts, iron powder.
Catalytic Co-Pyrolysis of Palm Oil Empty Fruit Bunch and Coal into Liquid Oil Sunarno Sunarno; Ronna Puspita Sari; Tifanny Frimacia; Silvia Reni Yenti; Panca Setia Utama; Edy Saputra
International Journal of Renewable Energy Development Vol 11, No 2 (2022): May 2022
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2022.42193

Abstract

The decline in fossil fuel sources has prompted research into finding renewable fuels. One of environmentally friendly energy sources with high efficiency is by producing liquid oil from palm oil empty fruit bunch (EFB) and coal. Pre-treatment of empty fruit bunches using NaOH and various concentrations of H2O2, various ratios of EFB/coal, the ratio of CaO catalyst, chemical and physical characteristics were studied to produce the better liquid oil yield. The H2O2 concentrations are 0%, 1%, 2%, and 3%. The ratios of EFB/coal (R) are 0/100, 25/75, 50/50, and 75/25. The ratios of catalyst CaO/raw material are 0%, 3%, 6%, and 9%. It ran at 400 °C with 100 mL/min nitrogen gas flowing during one hour. The results showed that adding sodium hydroxide and hydrogen peroxide in the EFB pre-treatment increased the liquid oil yield. With an increase in the EFB/coal ratio, the liquid oil yield increased. Co-pyrolysis treated EFB and Coal with a ratio of 75:25 produced 32% liquid oil yield, but the liquid oil yield decreased to 19% with the addition of 9% CaO catalyst. However, the addition of CaO catalyst reduces the acidity and increases the calorific value of the liquid oil.
Co-Authors Ahmad Fadli Ahmad Zaki Alfian Kamaldi Andes Sagita Charismayani Charismayani Desly Fadilla Simbolon Edward Hs Eka Putri Sriandriani Ekadian Lestari Simatupang Ekky Wahyudi Enang Vovilya Erlisa Yanuari Putri Evelyn Evelyn Ferisma Ratu Giri Gunawan Wibisono Gusti Ayu Nurjanah Hasrul Hasrul, Hasrul Imanuel Tumanggor Iskandar Romey Sitompul Ismeddyanto, Ismeddiyanto Jhon Armedi Pinem Kartika Pratama Syafitri Khairat, Khairat Komalasari Komalasari Lita Darmayanti Lora Mona Tambunan Marlina Marlina Miguel Felix Wijaya Monita Olivia Muhdarina Muhdarina Nani Agustina Nurlis Nurlis Panca Setia Utama Putri, Erlisa Yanuari Riandy, M Arief Rianti Ratna Dewi Rio Saputra Ronna Puspita Sari Rudy Satriya Pratama Saiful Bahri Saiful Bahri Saputra, Rio Sihotang, Fernando Silvia Reni Yenti Sitanggang, Ronal Rius Sunarno Sunarno Syafi’i, Abdullah SYAIFUL BAHRI Syamsu Herman Syarfi Syarfi Syelvia Putri Utami Tifanny Frimacia Tresia Monika Natalia Sinaga Trisuciati Syahwardini Tumanggor, Imanuel Wahyudi, Ekky Yelmida Azis Zuchra Helwani Zultiniar Zultiniar Zultiniar, Zultiniar