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All Journal Natural Science: Journal of Science and Technology CHEMISTRY PROGRESS Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Jurnal Kesehatan Masyarakat Andalas (Andalas Journal of Public Health) al-Kimiya Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Riset Kimia Konversi Akta Kimia Indonesia Unri Conference Series: Community Engagement Dinamika Lingkungan Indonesia Jurnal Rekayasa Kimia & Lingkungan
SYAIFUL BAHRI
Riau University
Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Public Health

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PENGARUH TEMPERATUR DAN KONSENTRASI KATALIS PADA CRACKING CANGKANG SAWIT MENJADI CRUDE BIO-FUEL -, Sunarno; R.Y, Silvia; Bahri, Syaiful
Jurnal Riset Kimia Vol 5, No 1 (2011): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v5i1.185

Abstract

 ABSTRACT One of solid waste that produced by palm industry is palm oil shell. This waste abundant in Riau about 700.5 ton/day. The shell compositions are cellulosa, hemicellulosa, and lignine. That compounds can be cracked into crude biofuel in slurry reactor with NiMo/ZSM-5 catalyst. The objective of research to study the influence of cracking temperature (300, 310, 320, 330 0C) and concentration of catalyst (0.5; 1.5; 2.5; 3.5%) to yield of crude biofuel and to determine physical and chemical properties. Cracking process used 50 gram palm oil shell size -40+60 mesh, 500 mL silinap and rotation speed of mixing 300 rpm. The maximum yield was obtained 68.6% at temperature 330 0C and catalyst concentration NiMo/ZSM-5 2.5%. The physical properties of crude biofuel were calorimetric value (43.84 MJ/kg), density (1.01 g/mL), viscocity (13.27cSt), acid number (76.11 g NaOH/g sample) and flash point (64 0C). The GC-MS analysis result indicated dominant compounds in crude biofuel were acetic acid (33.94%), phenol (31.71%), furancarboxaldehide (7.78%) and methanol (4.93%). Key words : Catalyst, crude biofuel, palm oil shell 
Pengaruh Berat Katalis La/ZnO Dan Kecepatan Pengaduk Terhadap Produksi Biodisel Dari Crude Palm Oil (CPO) (Elaeis guineensis Jacq) Musbar, Al Swendo; Bahri, Syaiful; Yelmida, Yelmida
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

iodiesel is one of the alternative fuel substitute environmentally friendly solar. The use of biodiesel as fuel for diesel engines can lower emissions compared to petroleum diesel. Total petroleum reserves are declining causes high world oil prices, to address this then required the development of renewable alternative energy derived from vegetable oils, biodiesel that is one of them. This research aims to produce biodiesel from CPO uses a heterogeneous catalyst La/ZnO, determine the characteristics of the catalyst and biodiesel as well as determine the selectivity of the catalyst La/ZnO. La/ZnO catalyst made of metal by way of La in the impregnation into the ZnO with 3% (b/b) ZnO, drained using the oven and calcination, oxidation and reduction. The process of making biodiesel is made through one stage of esterification and Transesterification was conducted simultaneously, stirring speed variation (200, 300, and 400 rpm) catalyst weight variation of ZnO 0.5 1, 1.5 and 2%, weight 80 grams and CPO sample methanol oil ratio against methanol 1:9 is inserted into the reactor for Transesterification reaction lasts for 60 minutes at a temperature of 60 ° c. This research resulted in the largest biodiesel yield on never stirring 200 rpm with a weight of catalyst 1% of 92.48%. Characteristics of catalyst has a surface area of 14.590 m2/gr La/ZnO catalyst has a good selectivity againts methyl palmitate. Keywords: biodiesel, CPO, La/ZnO catalyst, transesterification
Produksi Biodiesel Dari Minyak Sawit Off Grade menggunakan Klinker Semen Teraktivasi Sebagai Katalis Untuk Reaksi Transesterifikasi Putri, Karina Octaria; Helwani, Zuchra; Bahri, Syaiful
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

Cement clinker used as solid base catalyst and activated through calcination method. Effect of calcination temperature on the catalytic performance studied. The catalyst with the highest activity is obtained when the calcination temperature of 800 °C and the calcination time of 7 hours with transesterification reaction conditions are a molar ratio of methanol/oil 6:1, catalyst dosage of 3% by weight, temperature of 70 °C for 2 hours with yield biodiesel results reached 76,84%. CaO, SiO2, 2CaO.SiO2 and 3CaO.SiO2 materials found in the catalyst through x-ray diffraction (XRD) analysis and specific surface area of catalyst is 35,879 m2/g through Brunauer-Emmett-Teller (BET) analysis. Main composition of biodiesel found through Gas Chromatography-Mass Spectrometry (GC-MS) analysis, such as methyl palmitate, methyl oleate, methyl stearic, methyl myristate, methyl arachidate and methyl laurate.Keywords: biodiesel, calcium oxide, catalysts, cement clinker, transesterification.
Aktivasi Klinker Semen Sebagai Katalis Pada Proses Produksi Biodiesel Dari Minyak Sawit Off Grade Miftahudin, Dhani Nur; Helwani, Zuchra; Bahri, Syaiful
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

Clinker cement is a solid material activated by calcinations method. The optimum condition studied by a variation of calcinations time. The catalyst with highest activity is obtained when the calcinations time is 5 hours and calcinations temperature is 700 °C with transesterificationreaction conditions are a molar ratio of methanol/oil 6:1, catalyst dosage of 2% y weight, temperature of 70 °C for 2 hours with yield biodiesel result reached 84,26%. CaO, SiO2, 2CaO.SiO2 and 3CaO.SiO2 materials found in the catalyst thrugh x-ray diffraction (XRD) analysis and specific surface area of catalyst is 25,497 m2/g through Brunauer-Emmett-Teller(BET) analysis. Some of metil ester such as methyl palmitate, methyl oleate, methyl stearic, methyl myristate, and methyl laurate are found through Gas Chromatography-MassSpectrometry (GC-MS) analysis.Keywords: biodiesel, calcium oxide, catalysts, cement clinker, transesterification.
Pengaruh Berat Katalis La/ZnO Dan Waktu Reaksi Terhadap Pembuatan Biodiesel Dari Crude Palm Oil Khairul, Anapuja; Bahri, Syaiful; Wisrayetti, Wisrayetti
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

Domestic demand for petroleum is increasing while Indonesia's oil reserves are running low leading to high world oil prices. To overcome this it is necessary to develop alternative renewable energy derived from vegetable oil, one of which is biodiesel. Purposes of this research were to produce biodiesel from CPO, having study the effect of different weight of the catalyst and reaction time on process of palm oil biodiesel, determine the characteristics of catalyst La/ZnO. The La/ZnO catalyst is made by impregnate 3 % La into ZnO, then dried using oven and calcination, oxidation and reduction. Production of biodiesel is carried out through two stages: esterification and transesterification. The highest yield resulted on La/ZnO catalyst weight 1% which is 92.46%. Production biodiesel from CPO using La/ZnO catalyst produces biodiesel which can be used as alternative energy, catalyst weight and reaction time are directly proportional to the yield of biodiesel from CPO, La/ZnO catalysts have good selectivity against biodiesel from CPO.Keywords: biodiesel, CPO, La/ZnO, transesterification
Produksi Biodiesel Dari Minyak Nyamplung Menggunakan Katalis Lempung; Pengaruh Rasio Mol Minyak : Metanol Dan Konsentrasi Aktivasi Katalis Husna, Zakiyatul; Bahri, Syaiful; Khairat, Khairat
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 one of alternative energy to replace fossil fuels from vegetable oil. The aims of this research were to produce biodiesel from callophylum oil using heterogen catalyst clay, determine the characteristics of the activated clay catalyst, determine the optimal conditions of making biodiesel from callophylum oil, determine the physical and chemical properties of biodiesel produced,comparing the characteristics of physics biodiesel synthesized by standards SNI 1782-2015.Catalyst is made by grinding the clay palas to a size of -100 + 200 mesh. Clay was activated using H2SO4 solution with variation of concentrations 0,5 N, 1 N and 2 N. The mixture is filtered using a vacuum pump and calcined at 300ºC for 3 hours. Production of biodiesel is carried out through two stages: esterification and trans-esterification. Before esterification, degumming process was done to remove impurities and gum contained in the oil. While in the trans-esterification process, variation in the mole ratio of oil : methanol is 1:6, 1:9 and 1:12, callophylum oil sample weight 50 gram and 1% by weight of clay catalyst added to the to trans-esterification reactor, reaction lasted for 120 minutes at 60ºC with agitation speed 400 rpm. This research resulted in the largest biodiesel yield on the use of the activation of the acid concentration 2N variation mole ratio of oil : methanol 1:9 is 86.2 %. The Characteristics of the catalyst that has a surface area and ratio of Si/Al large enough that 25,74 and 37,64 (m2/g) with biodiesel produced almost in accordance with established standards (SNI 04-1782-2015). Keywords: biodiesel, callophylum oil, palas clay, transesterification
Pengaruh Rasio Mol Minyak : Metanol Terhadap Sintesis Biodiesel Dari CPO (Crude Palm Oil) Menggunakan Katalis La/ZnO Yumna, Nada Ibtihal; Bahri, Syaiful; Utama, Panca Setia
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

The synthesis of biodiesel is affected by several factors, one of them is the mole ratio of oil to methanol. Producing biodiesel need excess amount of methanol to increase biodiesel yield. The effect of mole ratio of oil to methanol of 1:9; 1:12; 1:18 and the amount of La impregted to ZnO of 1%; 2%; 3%; 6% to the biodiesel yield were studied. The impregnation of La into ZnO was done by maxing La2O3 and ZnO, and then the calcination process was applied for 6 hours at 500 oC using N2 gas. The oxidation process was done for 2 hours at 400 oC using O2 gas. The reduction process was done for 2 hours at 400oC using H2 gas in order to reduce oxygen in La2O3. The esterfication process was done in 1000 cm3 stirred glass reactor, the operating conditions were temperature of 60 oC and time of 60 minutes. After that, the transesterification process was done using the same equipment. The operating conditions were temperature of 60 oC and time of 90 minutes, stirring speed of 400 RPM, and amount of catalyst was 1% (w/w) oil. The highest biodiesel yield of 90.937 % was obtained at the mole ratio of oil to methanol 1:18 and amount of La impregted into ZnO of 6 %. Physical characteristic of biodiesel obtained were density of 881 kg/m3, kinematic viscosity of 3.53 mm2/s, acid number of 0.423 mg-KOH/g biodiesel and flash point of 148 oC which is in accordance to the standard of Indonesian Biodiesel (SNI 04-7128-2015).Keywords: biodiesel, CPO, La/ZnO catalyst, transesterification
PRODUKSI BIOETANOL TONGKOL JAGUNG (ZEA MAYS) DARI HASIL PROSES DELIGNIFIKASI Fitriani, Fitriani; Bahri, Syaiful; Nurhaeni, Nurhaeni
Natural Science: Journal of Science and Technology Vol 2, No 3 (2013): Volume 2 Number 3 (December 2013)
Publisher : Univ. Tadulako

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Abstract

The research about ?The Production of Bioetanol in Corn cob waste (Zea Mays) of Resulting The Delignation Process?. The aim of this research  is to find out the highest weight of cellulose which contained in the corn cob waste. Then Cellulose which has been obtained, it was done on delignification process by using NaOH in variety of soaking time. To achieve the goal, then the application of the treatment effect of soaking time on corn cob waste powder on weight of cellulose was done. On the effect of soaking time on the powder of corn cob waste was applied   the six levels each 12 hours, 16 hours, 20 hours, 2 hours, 28 hours and 32 hours. Based on the result, it showed that the weight of cellulose is 5,729 g at 28 hours on soaking time. The use of soaking time which was applied for delignification process NaOH on the yield of cellulose. Cellulose of hydrolysis corn cob waste powder with H2SO4 10% and the result of fermentation of hydrolysis yeast cells immobilized. The level of glukosa is 43 % and 6 % for etanol. The result of sugar fermentation is done at the room temperature for 48 hours.
KINERJA ADSORPSI LEMPUNG CENGAR TERAKTIVASI UNTUK MENGHILANGKAN KATION Co(II) DARI FASA BERAIR ., Muhdarina; Bahri, Syaiful
CHEMISTRY PROGRESS Vol 5, No 2 (2012)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.5.2.2012.770

Abstract

Mengaktifkan permukaan lempung bertujuan meningkatkan kemampuan permukaan dalam mengikat adsorbat. Lempung alam Cengar telah diaktifkan secara impregnasi di dalam larutan 1 molar garam amonium asetat dan amonium klorida, disentrifugasi dan dikeringkan. Serangkaian percobaan adsorpsi kation Co(II) oleh lempung aktif Cengar dipelajari melalui mekanisme, isoterm dan termodinamika adsorpsi. Adsorpsi kation Co(II) mengikuti mekanisme difusi film dan isoterm Langmuir. Proses adsorpsi kation Co(II) pada lempung aktif Cengar terjadi secara kemisorpsi dan tidak spontan. Kation Co(II) lebih banyak teradsorpsi pada lempung yang diaktifkan dengan amonium asetat.Activation of the clay surface is aimed to improve the ability of the surface to bind the adsorbate. Cengar natural clay was activated by impregnation in a solution of 1 M ammonium acetate and ammonium chloride salt respectively, followed by centrifugation and drying.A series ofadsorption experiments of cationsCo(II) on activatedCengarclay was studied throughmechanism, isothermandthermodynamicsof adsorption.Adsorption ofcationsCo(II) followed thefilmdiffusionmechanismandLangmuirisotherm. The adsorption process ofcationsCo(II) on the Cengar clay is occured under chemisorption and not spontaneous. The adsorption of cationsCo(II) is higher inammoniumacetate-activated rather than ammonium chloride-activated clays.
Pembuatan Biodiesel Dari Crude Palm Oil (CPO) Dengan Katalis La/NZA Setianingsih, Ayu; Bahri, Syaiful; Wisrayetti, Wisrayetti
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

Total petroleum reserves are declining causing high world oil prices, to overcome this it is necessary to develop alternative renewable energy derived from vegetable oil, one of which is biodiesel. Purposes of this research were to produce biodiesel from CPO, determine the characteristics of catalyst and biodiesel. The La/NZA catalyst is made by activation the natural zeolite, then La is impregnated into NZA having continued variations of 0, 1 and 3% (w/w) of NZA, then dried using oven and calcination, oxidation and reduction. Production of biodiesel is carried out through two stages: esterification and transesterification. The highest yield resulted on using 1%La/NZA catalyst with catalyst weight 3% which is 85.37%. Characteristics of the catalyst that has a surface area and morphology. Biodiesel characterization in accordance with national standards.Keywords: biodiesel, CPO, La/NZA, transesterification
Co-Authors ', B. Isyandi ' -, Sunarno Abd. Rasyid Syamsuri Adam Fadillah Adelina Samosir Adita Sukma Ramadhania Afria Anggreini Afrielyanda H Agung Abadi Kiswandono Almasdi Syahza Aman aman Amilia Linggawati Amun Amri Andi Mulya Adha Anna Apryana Anwar Sumianto Arbhy Indera Ikhwansyah Ari Aditia Sukma Aria Gusti Aulia Rahman Aura Dhayang Fiarizky Bernard Isyandi Brilliant Asmit Bunga Fitriani Gumadita Chairul Chairul Chairul Chairul Dedi Afandi Dedi Afandi Dhani Nur Miftahudin Dian Agustin Djaimi Bakce Edwidya Ocktaviani Armay Edy Saputra Ekadian Lestari Simatupang Ella Awaltanova Elvi Yenie, Elvi Erlisa Yanuari Putri Fathiyah Zulfahni Febrian, Ramadhoni Feby Pratama Nugraha Feni Nopriza Firman syah Fistiyanti, Davinta Fitriani Fitriani Ganjar Andhulangi Genardus Oktavri Sijabat Hade Karimata Hadyan Sartoni Haryo Satriya Oktaviano Hasnul Bustaman Hedri Yanti Hesty Rodlotu Yula Husna, Zakiyatul Ibnu Oktariza Idral Amri Inget Yester Yunanda Irdoni Irdoni Irnaliah, Irnaliah Irwan Irwan Iswadi Idris James Becker Jefriadi Jefriadi Karina Octaria Putri Khairat Khairat Khairat, Khairat Khairul, Anapuja Laila Kusmiati Lisna Efiyanti M Arfi Adharyandy Firman Meliagustin, Adilla Mhd. Reza Pahlepi Miftahudin, Dhani Nur Mita Rilyanti Mitri Irianti Muhammad Disro Muhammad Ismet muhammad rizky, muhammad Muhammad Sulthon Siregar Muhdarina . Muhdarina Muhdarina Musbar, Al Swendo Nia Meisa Wulandari Nova Dwi Safitir Nurhaeni Nurhaeni Nurhasanah Nurhasanah Nurhayati Nurhayati Nurhayati, Nurhayati Nurlis Nurlis Oci Khairani Putri Azizah Putri, Karina Octaria R. Supriyanto R.Y, Silvia Rahmah, Yulia Rahmansyah Rahmansyah Raja Valti Mhd Siregar Rajib Azri Ranum Anggun Sari, Ranum Anggun Ratna Dian Armalita Regina Gita Riani Dio Renia Navivin Ridho Fahrozi Rinawati Rinawati Rinny Jelita Rino Hasanatul Isra Rizka Aulia Hardi, Rizka Aulia RM Riadi Romie Zulfadli Saputra, Adika Sari Rahma Yanti Savitri Larasati Setiadi, Fydel Setianingsih, Ayu Silvi Puteri Anggraini Silvia R.Y siti rahmah Subangkit Julio Jaya Sukiman Hernanda Sunarno - Sunarno Sunarno Sunaro Sunarno Surya Romadani Syamsu Herman T. Ariful Amri Taufik Kharnofa Tresia Monika Natalia Sinaga Utama, Panca Setia Wega Trisunaryanti Wisrayetti Wisrayetti Wisrayetti, Wisrayetti Yatim Lailun Ni’mah Yelmida Azis Yeni Rizki Yenni Octavia Yopalim Zanstra Yuli Ambarwati Yulianti Yulianti Yuliati Eka Putri Yuliatmi Yuliatmi Yumna, Nada Ibtihal Yusnimar Sahan Yusnimar Yusnimar Yusnimar Yusnimar, Yusnimar Zetria Pujiana Zipora Sembiring Zuchra Helwani Zuchra Helwani, Zuchra