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Bio-Oil dari Limbah Padat Sawit dengan Metoda Pirolisa Saputra, Edy; Bahri, Syaiful
Jurnal Natur Indonesia Vol 11, No 2 (2009)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (53.702 KB) | DOI: 10.31258/jnat.11.2.124-128

Abstract

Bio oil is most important alternative energy resources for human life due to the production of fossil fuel tend todecline. Numbers of researches have been developed on alternative energy resources, such as the conversion ofbiomass. The palm solid waste which is consisted of wood, stem and empty bunch having size of diameter in rangeof 2 to 10 mesh were used in this work. The pyrolysis method is selected in this research. This process was donein stainless steel reactor having length and length of 60.0 and 3.81 cm respectively at temperature of 450 to 600oCunder nitrogen flow. Gas chromatography HP 5890 is utilized to analyze of the bio oil result. The result achieved thehighest yield at 500oC and particle diameter of 2-6 mesh.
Modifikasi Kulit Telur Ayam Dan Fly Ash Sebagai Katalis Untuk Reaksi Transesterifkasi Minyak Sawit Off Grade Menjadi Biodiesel Putra, Yogi Lesmana; Helwani, Zuchra; Saputra, Edy
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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Abstract

Eggshells modificated of solid base catalyst through calcination, hydration, dehydration methods with fly ash through impregnation method to load calcium oxide with eggshells as precursor. Effect of dehydration temperature and time on the catalytic performance were studied. The catalyst with the highest activity is obtained when the dehydration temperature of 600 °C and the dehydration time of 3 hours with 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 84,32%.Keywords: biodiesel, calcination, calcium oxide, catalysts, dehydration, fly ash, hydration, impregnation, transesterification.
Pembuatan Biodiesel Dari Minyak Biji Kapuk (Ceiba Pentandra) Dengan Katalis Lempung Teraktivasi; Pengaruh Kecepatan Pengadukan Putri, Erlisa Yanuari; Bahri, Syaiful; Saputra, Edy
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
Sintesis Katalis Basa Padat Nanomagnetik CaO/Serbuk Besi Untuk Reaksi Transesterifikasi Minyak Sawit Off Grade Menjadi Biodiesel Hafiz, Fadlillahi; Helwani, Zuchra; Saputra, Edy
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Nanomagnetic solid base catalyst synthesized with iron powder nanoparticle to load calcium oxide through impregnation method. The optimum conditions for the manufacture of catalysts investigated. Effect of weight ratio of CaO to iron powder and calcination temperature on the catalytic performance were studied. The catalyst with the highest activity is obtained when the weight ratio of CaO to iron powder is 80:20 and calcination temperature of 850 °C under transesterification reaction conditions of a molar ratio of methanol/oil 10:1, catalyst dosage of 1% by weight, temperature of 70 °C for 2 hours with biodiesel results reached 81.32%. CaO, Fe2O3 and Ca(OH)2 material was found in the catalyst through x-ray diffraction with a catalyst alkalinity values of H_ > 9.3 through alkalinity analysis using hammet indicator phenolphthalein and specific surface area of catalyst is 1.963 m2/g through Brunauer-Emmett-Teller (BET) analysis.Keywords: biodiesel, calcination, calcium oxide, catalysts, impregnation, iron powder, transesterification.
β-MnO2 ACTIVATION OF PEROXYMONOSULFATE FOR CATALYTIC PHENOL DEGRADATION IN AQUEOUS SOLUTIONS Saputra, Edy; Muhammad, Syaifullah; Sun, Hongqi; Ang, Ha-Ming; Tadé, Moses O.; Wang, Shaobin
CHEMICA: Jurnal Teknik Kimia Vol 1, No 1 (2014): Juni 2014
Publisher : Universitas Ahmad Dahlan

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Abstract

β-MnO2 was prepared and used to activate peroxymonosulphate for degradation of aqueous phenol. The sample was characterized by N2 adsorption, X-ray diffraction (XRD), scanning electron microscopy (SEM). The catalyst is highly effective in heterogeneous activation of PMS to produce sulfate radicals for phenol degradation compared with homogeneous oxidatiom. β-MnO2 could completely remove phenol in 30 min at the conditions of 25 ppm phenol, 0.4 g/L catalyst, 2 g/L PMS, and 25 oC. A pseudo first order model would fit to phenol degradation kinetics and activation energy was obtained as 38.2 kJ/mol.
Sintesis Biodiesel Dari Minyak Nyamplung (Calophyllum Inophyllum) Menggunakan Katalis Geopolimer: Pengaruh Konsentrasi Katalis Dan Rasio Mol Minyak:Metanol Sugesti, Heni; Saputra, Edy; Helwani, Zuchra
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

Biodiesel is a product of transesterification reaction fat/oil and methanol with the aid of catalyst. Catalysts is commonly used in the production of biodiesel is strong base catalysts such as NaOH and KOH which is difficult to separate from the product of the reaction because it has the same phase as the reactant. Therefore, it is necessary to develop catalyst technology in order to get the production process becomes more economical, applicable and environmentally friendly, one of the catalyst is geopolymer. Geopolymers are synthesized by reacting potassium silicate, metakaolin, and bottom ash. Geopolymers is used in transesterification reaction. The process variables are weight of oil 50 grams, stirring rate 400 rpm, reaction time 120 minutes, and temperature of 65 oC, with catalyst 2% (w/w) and mole ratio of methanol:oil 1:12. The yield of biodiesel 96.62% with density 878.3 kg/m3, viscosity 4.395 mm2/s, the acid number of 0.3575 mg-KOH/g biodiesel and the flash point 134.25 °C comply with the SNI standards (SNI 7182: 2015).Keywords: biodiesel, calophyllum inophyllum oil, geopolymer, transesterification, yield
Kuat Tekan Paving Block Geopolimer Abu Sawit (Palm Oil Fuel Ash) Dengan Perawatan Suhu Ruang Syarif, Harriad Akbar; Olivia, Monita; Saputra, Edy
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

Geopolymer is an environmentally friendly alternative construction material made from the process of activating the base material rich in silicon (Si) and aluminum (Al) with a solutionof alkaline activators. In this study, using the ashes of oil derived from Dumai, Riau Province as the base material of geopolymer. With the eco-friendly construction material that theproduct is made with reference to a standard paving blocks. This study is based on variations of modulus activator, dosage activators, and the addition of cement type 1 (OrdinaryPortland Cement) for the treatment of room temperature (setting time) on the composition of the mixture. This study aims to determine the amount of use of the base material (palm oil fuelash) from the comparison alkaline activator with palm oil fuel ash used in paving block geopolymer based treatment time and its influence on the physical properties of the geopolymer paving block. The results showed that the strong increase in modulus of paving blocks are influenced by activators in combination with the addition of cement to each composition.Keywords: palm oil fuel ash, geopolymer, paving block, modulus activator, dosage activator
Pembuatan Biodiesel Dari Minyak Biji Kapuk (Ceiba Pentandra) Dengan Katalis Lempung Teraktivasi; Pengaruh Waktu Reaksi Terhadap Yield Biodiesel Nurlis, Nurlis; Bahri, Syaiful; Saputra, Edy
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
Kesetimbangan Adsorpsi Zat Pewarna Rhodamine-B Menggunakan Fly Ash Sawit Sebagai Low-Cost Adsorbent Olsy, Fradilla; Saputra, Edy; Helwani, Zuchra
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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Abstract

Rhodamine B is one of the various toxic dye that contributes significantly to environmental pollution, because it is non-biodegradable, toxic and harmful to the environment. One effort to reduce the amount of rhodamine b is the adsorption process. One of the good adsorbent that can be use for adsorbtion process is palm oil fly ash. The purpose of this study to aim the effect of adsorption temperature, pH, and adsorbent mass. Knowing the optimum conditions for reducing the levels of dye in the water, as well as determine the adsorption equilibrium models rhodamine b using fly ash oil modified with 0,1M HCl as an adsorbent. Fly ash modification processes are done by mixing fly ash and HCl in the ratio 1:10 of 0,M HCl solution. The adsorption process is conducted by mixing fly ash 0.5; 1; 1,5 and 2g/L and pH solution of rhodamine b 2; 4; 6; 8 with temperature of 30; 35; 45oC and with various of rhodamine b’s initial solution 10, 20, 30 dan 40ppm. The optimum conditions for reducing the levels of rhodamine B in water is the adsorbent mass of 2g/L, temperature of 45°C and pH 8 at 10ppm concentration rhodamnine’s solution. Thermodynamic data such as ΔH, ΔG and ΔS were calculated. And the mechanism of rhodamine B dye adsorption by fly ash oil is suit well with Freundlich and Langmuir isotherm models.Keyword: Adsorption, Isothermal Adsorption, Palm Oil Fly ash, Rhodamine B,
Pembuatan Na2O/Fly Ash sebagai Katalis Pada Proses Transesterifikasi Minyak Sawit Off Grade Menjadi Biodiesel Surya, Andry Pratama; Helwani, Zuchra; Saputra, Edy
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

A fly ash supported sodium oxide (Na2O) catalyst used in transesterification reaction of off-grade palm oil for biodiesel production. The catalyst synthesized by loading Na2O from sodium nitrate (NaNO3) into fly ash micro pore through impregnation method. The optimum catalyst preparation conditions were determined by influence of calcination temperature and weight ratio of NaNO3/fly ash. Catalyst with highest catalytic activity was achieved when calcined at 550oC and proportion of NaNO3/fly ash is 90:10. Under the conditions of oil : methanol ratio of 1:8, catalyst dosage of 4 wt% and temperature of 60oC for 3 h, the biodiesel yield reaches to 89,12%. Na2O, SiO2, NaNO3 and Na2O2 were found in the catalyst through X-ray diffraction (XRD) while the basic strength of the catalyst H_ > 9,3 was determined by using Hammett indicator phenolphthalein. Surface area of the developed catalyst is 21,651 m2/g through Brunauer-Emmett-Teller (BET). Characteristics of biodiesel such as density, kinematic viscosity, acid value, flash point has been matched with standard for biodiesel specification of Indonesia.Keywords: biodiesel, sodium oxide, catalyst, fly ash, impregnation, calcination, transesterification.