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All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains JURNAL TEKNIK Jurnal Teknologi Kimia Unimal
Syarfi Daud
Jurusan Teknik Lingkungan Fakultas Teknik Universitas Riau
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering 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

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Analisis Pengaruh Penambahan Lumpur Gambut Terhadap Penurunan Kekeruhan, Zat Organik, Dan Warna Air Gambut Dengan Cara Koagulasi Menggunakan Koagulan Aluminium Sulfate (Al2(SO4)3) Assi Syura; Dewi Fitria; Syarfi Daud
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Peat water is a surface water that’s found in swamp and lowland areas that have characteristics of organic matter, turbidity and high color. One of peat water treatment that can be used by coagulation-flocculation. This study aims to determine the effect of peat sludge addition in coagulation-flocculation process with Coagulant Aluminium Sulfate (Al2(SO4)3) 1%. Peat water was taken in Rimbo Panjang Village, Tambang District, Kampar Regency, Riau Province. Peat sludge used in this study amounted to 6.7 gr/L, 13.4 gr/L, 20 gr/L. 26.7 gr/L and 33.4 gr/L. Rapid stirring that used 250 rpm during 1 minute and slow stirring at 60 rpm, 40 rpm and 20 rpm every 20 minutes. The results of this researchshowed that the value of turbidity increased by 18.77% with allowance efficiency from 70.45% to 89.22%, organic substance efficiency increased by 3.84% with efficiency from 96.03% to 99.87% and color efficiency parameters increased by 1.36% with efficiency from 98.50% to 99.86%.Keywords: Peat Water, Coagulation-Floculation, Peat Sludge, Turbidity, Organic Substances, Color
Pengaruh Suhu Dan Persen Katalis Zeolit Terhadap Yield Pirolisis Limbah Plastik Polypropylene (PP) M.T. Abdul Rahman; Syarfi Daud; Muhammad Reza
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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Increasing population growth leads to increased plastic waste resulting in adverse environmental impacts, If not further processed. This research was conducted to convert plastic waste into fuel oil using synthetic zeolite catalyst. The purpose of this research is to see the influence of temperature variation and percent catalyst / plastic. A total of 100 grams of polypropylene plastic type were crushed in a batch reactor at a temperature of 300 ° C, 350 ° C, and 400 ° C for 60 minutes with percent catalyst / plastic variations 5; 6; 7 (% weight). The highest yield was obtained at 400 ° C with 7% catalyst / plastic percent of 75.69%. While the highest yield without catalyst was obtained at 400 ° C at 65.57%. The product result obtained is density 0,87 gr / ml, kinematic viscosity value 2,140 cSt, flash point value 52 ° C, calorific value 44.673 kJ / kg. The analysis results show that (%) yield of the product meets the diesel (solar) standard.Keywords: liquid fuel, heating value, pyrolysis, polypropylene, synthetic zeolite.
Pengaruh Massa Dan Waktu Kontak Terhadap Penyisihan Zat Warna Air Gambut Menggunakan Adsorben Sekam Padi Putri Ayu Puspita; Syarfi Daud; Edward Edward
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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Peat water is surface water that is blackish brown in color which requires effective and efficient processing to be suitable for use by the community. Various types of adsorbents continue to be developed, one of which is the adsorption of rice husk. The purpose of this study was to determine the removal of dyes in peat water, calculate the adsorption capacity and compare the results of the analysis with the quality standards of the Republic of Indonesia Ministry of Health No. 416 / MENKES / PER / IX / 1990. The fixed variable used in this study is stirring speed 100 rpm and particle size +170 mesh. The independent variables used consisted of variations in the mass of the adsorbent 1.5; 2; 2.5; 3 gr and stirring time 30, 60, 90 and 120 minutes. Dyestuff removal efficiency 57.16% at 3 gr adsorbent mass with 60 minutes contact time. The highest capacity for adsorption of dyestuff was achieved at a mass of 1.5 g with a contact time of 60 minutes of 94.12 mg / gr. The results of the study are not in accordance with the Minister of Health Regulation No.416 / MENKES / PER / IX / 1990, the results obtained exceed the quality standard of 687 PtCo. Keywords: Adsorption, Adsorbent, Peat Water, Rice Husk.
Penyisihan Kadar Fe Dan Warna Pada Air Gambut Secara Koagulasi – Flokulasi Dengan Menggunakan Biokoagulan Kulit Pisang Kepok (Musa Acuminate) Mutiara Nursyarah; Dewi Fitria; Syarfi Daud
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 1 Januari s/d Juni 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Kepok banana peel (Musa Acuminate) is easily to find in solid waste in Indonesia.. One of the uses of the solid waste of Kepok banana peel is that it can be used as a natural coagulant in water treatment. In this study, Kepok banana peels were used as a natural coagulant in the coagulation process to remove Ferric content and color of peat water. Peat water was taken from Rimbo Panjang Village, Kampar Regency. Kepok banana peels was dried using oven with 60 oC temperature for 1 hour 20 minutes. Kepok banana peels are then blended into powder and sieved using a 100 mesh sieve. The coagulant dosages used in this study was 4 gr / L; 8 gr / L; 12 gr / L; 16 gr / L; 20 gr / L; 24 gr / L; and 28 gr / L. The rapid mixing speed used was 250 rpm for 1 minute and the slow mixing speed were 90 rpm, 50 rpm, and 20 rpm for 15 minutes respectively. The results of this study showed that the concentration of Fe in peat water decreased by 0.7551 mg / L with a removal efficiency of 54.23%. Different resuts found in the color parameter, the natural coagulant of Kepok banana peel was not able to remove the color in the peat water. Keywords: Coagulation-Flocculation, Kepok Banana Peels, Natural Coagulants, Peat Water
Pengaruh Kecepatan Dan Waktu Pengadukan Lambat Terhadap Penyisihan Fosfat Dan TSS Limbah Cair Laundry Menggunakan Biokoagulan Tepung Biji Asam Jawa Ribka Hutapea; Syarfi Daud; Edward Hs
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 1 Januari s/d Juni 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Tamarind seeds are biocoagulants which contain active substances and are polyelectrolytes. This study aims to determine the slow stirring speed and stirring time in the removal of phosphate and TSS parameters in laundry wastewater and to compare the analysis results with the PERMENLH / 5/2014 quality standard. The removal was carried out by coagulation flocculation and sedimentation using tamarind seed flour by varying the slow stirring speed of 40 rpm, 45 rpm, 50 rpm and slow stirring time of 20 minutes, 25 minutes, 30 minutes and fast stirring 120 rpm for 3 minutes, with a biocoagulant dose 3.5 gr/l. The results showed that the optimum stirring speed was 45 rpm with a stirring time of 25 minutes with the removal efficiency of 60.59% and 78.50% TSS, respectively. The analysis results for phosphate and TSS still do not meet the quality standards for laundry wastewater. Keywords: Laundry Liquid Waste, Stirring Speed, Stirring Time, Coagulation-Flocculation, Tamarind Seed Flour
Pengolahan Limbah Cair Hotel Dengan Membran Ultrafiltrasi Aliran Cross Flow Dan Pencucian Kimia Membran Miki Randi; Syarfi Daud; Ivnaini Andesgur
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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The construction of hotels is so rapid today will bring a significant effect on the environment. Ultrafiltration membrane is one of wastewater treatment technologies, but membranes have limitations such as the occurrence of the phenomenon of concentration polarization and fouling. The research objective of this study the effect of variations in transmembrane pressure against the rejection percentage BOD5, COD, TSS, and the effect of variations in transmembrane pressure, concentration of washing of the efficiency and effectiveness of washing the membrane. the concentration of the washing of the efficiency and effectiveness of washing the membrane. The process of ultrafiltration membranes and membrane chemical washing wastewater at the hotel do with variations in pressure of 0.5 bar , 1.5 bar , and 2.5 bar. Variation of chemical cleaning agent concentration of 1%, 1.5% and 2%, rinsing with distilled water for 30 minutes, for filtering wastewater hotel for 120 minutes, and washing using chemical cleaning agent (NaOH and Detergent) for 30 minutes. Results highest percentage of rejection was 83.1% for BOD5, COD parameter 69.6%, 66.7% TSS parameters in transmembrane pressure of 2.5 bar. The highest washing efficiency of the value of Flux Recovery (FR) gained 88.59%, and the value of resistance of Removal (RR) gained 95.00% in the washing detergent ingredients with a concentration of 2% in the transmembrane pressure of 2.5 bar. The highest leaching effectiveness obtained at 51.27% in the washing detergent ingredients with a concentration of 2% and a transmembrane pressure of 2.5 bar. Ultrafiltration membrane performance seen from the flux and rejection fit for use.Keywords: Ultrafiltration membrane, Fouling, Transmembrane Pressure, Efficiency of Washing, Effectiveness of Washing
Penurunan Kadar Besi Dengan Variasi Luas Trap Cascade Aerator Dan Debit Pada Air Gambut Muhammad Irwan Syahputra; Syarfi Daud; Dewi Fitria
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
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Fe content is a metal that is quite high in peat water. One technology that can be applied to remove Fe content is aeration. Aeration is the process of adding oxygen to water so that it can cause Fe oxidation reaction which will then cause Fe(OH)3 deposition. This study aims to determine the ability of the cascade aerator to remove Fe content in peat water with discharge variations of 4, 4,5, and 5 l/min with a variation of the trap area of 1,8 m2 and 2 m2. Also calculated is the value of the gas transfer coefficient (KLa) in the aeration process using a cascade aerator. Fe content before aeration was 1,22 mg/l. The results showed that the highest efficiency of removal of Fe content occurred at a discharge of 5 l/minute at a trap area of 2 m2 with an efficiency of 81,16%. The highest gas transfer coefficient value was obtained at a discharge of 5 l/minute on a 2 m2 trap area of 0,111/minute. The research results obtained have met the clean water quality standards PERMENKES RI No. 32 years 2017. Keywords: Cascade Aerator, Iron (Fe), Discharge, Trap Area, The Coefficient Of Gas Transfer (KLa).
Pengaruh Massa Dan Ukuran Partikel Adsorben Kulit Singkong Terhadap Penyisihan Kadar COD Dan BOD Pada Pengolahan Limbah Cair Tahu Ade Rani Putri; Syarfi Daud; Shinta Elystia
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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One of the treatments of reducing the pollutant level in tofu liquid waste is adsorption with cassava skin adsorbent. The objective of the study was to calculate the efficiency of minimizing of COD and BOD levels on the effluent treatment of tofu waste and to determine the appropriate adsorption isotherm. The fixed variable used in this study was stirring speed of 100 rpm and contact time 60 minutes. The main variable used consisted of a mass of adsorbent 1.5; 2 and 2.5 g and a particle measurement variation of -50+100; -100+170 and -170 mesh The highest removal efficiency of COD and BOD was 74.74% and 71.48% at 2.5 g mass with 170 mesh particle size. The type of isotherm that is suitable with the adsorption of COD and BOD content by cassava skin adsorbent is Freundlich isotherm with R2 value of 0.9875 for COD and 0.9971 for BOD. The highest metal removal efficiency of COD and BOD was 74.74% and 71.48% at 2.5 g mass with -170 mesh particle measurement. The type of isotherm that is suitable the adsorption of COD and BOD content by cassava skin adsorbent is Freundlich isotherm with R2 value of 0.9875 of COD and 0.9971 for BOD.Keywords: Adsorbent, Adsorption, BOD, COD, Cassava Skin, Tofu Liquid Waste
Pengaruh Suhu Dan Persen Katalis Karbon Aktif Terhadap Yield Pirolisis Limbah Plastik Polypropylene (PP) Ade Maulana; Syarfi Daud; Ivnaini Andesgur
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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The increasing amount of plastic waste raises its own problem for the enviroment. The prolem is caused by the difficulty of biologically decomposing of the plastic waste. Various efforts have been made to reduce plastic waste. One way to use plastic waste is to process it into liquid fuel through the pyrolysis process. The study aims to determine the effect of each temperature variation and percent of catalyst from the activated carbon on the yield produced by the polypropylene type plastic, and characterization of the resulting liquid fuel. The pyrolysis was carried out at a temperature variation of 3000C, 3500C, 4000C, and the percent of the catalyst variaton from the activated from 5%, 6%, 7%, and without the catalyst, with a reation time of 120 minutes. The results of this study produced the highest yield of 70,03% at 4000C by adding catalyst from activated carbon by 7%. The characterization of the fuel produced was 0,870 gram/ml in density, kinemati viscosity at 2,868 eSt, flash point at 520C, and calor value at 44,696 Mj/kg.Keyword: liquid fuel, heating value, pyrolysis, polypropylene, active carbon.
Pemanfaatan Limbah Cangkang Kerang Lokan (Geloina Expansa) Sebagai Biokoagulan Untuk Menurunkan Fosfat Pada Limbah Cair Laundry Davidson Davidson; Syarfi Daud; David Andrio
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
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Availability of Lokan calm shells waste (Geloina Expansa) has great potential to be used as raw material of chitosan biocoagulant. Chitosan has bioactivity properties, biodegradability, no hazardous materials and have oxygen binding force in the waste water, and it is very potential to be used as an environmentally friendly biocoagulant in the wastewater treatment process. High concentrations of detergent in water is coming from the laundry activities and it can caused decrease water quality and environmental pollution like increased levels of phosphate, because of that the preliminary treatment is needed by using coagulation-flocculation method. The research process was done gradually starting from extraction lokan calm shells to chitosan by deproteination process, demineralization and deacetylation, followed by coagulation-flocculation method. The variation of this study are dose of coagulant by 225 mg/l, 250 mg/l, 275 mg/l and 300 mg/l. The phosphate parameters was analyzed in laboratory referring to SNI 06-6989.31-2005. Based on the laboratory results, it showed that the maximum allowance of phosphate parameters were 80.71% respectively at 250 mg/l coagulant dose. From this research chitosan is able to removal phosphate parameters in laundry wastewater so that the results was obtained accordingly with some parameters PERMENLH/5/2014.Keywords: Laundry, Chitosan, phosphate, coagulation-flocculation
Co-Authors Abd. Rasyid Syamsuri Ade Rani Putri Afmarenti, Winda Apriyanto, Apriyanto Assi Syura Bahruddin Bahruddin Bahruddin Baktiar Simaremare David Andrio Davidson Davidson Desmawita, Dwi Desmawita, Dwi Dewi Fitria Dita Yusrita Edward Edward Edward Hs Edward HS Edward, Edward Elvi Yenie, Elvi Evi Royana Fachry Abda El Rahman Febriana, Hertina Firdha Ozani Rosselda Fahmi Fitri, Rizki Febriani Irpan Syafrianda Irwinsyah, Irwinsyah Isra Desmita Putri Istighfarini, Sri Ayu Emy Ivnaini Andesgur Jaksa Or Justman Jannah, Roudhatul Jecky Asmura Jhon Armedi Pinem Kardo Kardo Lira Aulia Wahyuni, Lira Aulia Lisa Asmiyarna Lisa Asmiyarna Lita Darmayanti M.T. Abdul Rahman Maria Peratenta Martin, Dicky Marzona Erlita Sari Mashitah, Siti Miki Randi Mila Safitri MS, Edward HS Muhammad Irwan Syahputra Muhammad Reza Muhammd Ichsan Mutiara Nursyarah Nastiti, Yulia Nurul Rahmatika Putri Putri Ayu Puspita Putri, Novia Eka Rahmi Ayuni Fuadi Refvi Gusvita Sari Revi Lasmita reyra, Anilza Silvi Ribka Hutapea Ricki Gunawan Ricky Pribadi Riny Afrima Sari Rio Patrianov Nugroho Ritonga, Desrinayanti Safira Ulyani Sembiring, Rinawati Sesvi Bonita. B Shaleh, Idries Hamidi Shinta Elystia Silvia Reni Yenti Sonny Wijaya Suziyana Suziyana Syafdika Sari Siregar Syamsu Herman Tejo Yulandi Yawaritsa Yawaritsa Yohana Siregar Zella Sri Rizka Zostria Hanijah