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All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains JURNAL TEKNIK
Syarfi Daud
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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 Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Pengaruh Variasi Penambahan Ragi Tape Dan Npk Terhadap Konsentrasi Bioetanol Hasil Fermentasi Jerami Padi Wahyuni, Lira Aulia; Yenie, Elvi; Daud, Syarfi
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

One of the alternative energy sources can be used as a substitute for fossil fuel-based energy is bioethanol. One of the raw material is rice straw ethanol. Rice straw can be used as raw material for bioethanol production because many contain cellulose. According to the Central Bureau of Statistics 2012 hay production in Indonesia reaches 64-96 million tons / year. This study aims to determine the optimal amount of yeast and NPK required in the manufacture of bioethanol once saw statistically influence of yeast and NPK against ethanol concentration produced, and test the density and viscosity of bioethanol fermented rice straw. This research was conducted by the method Separate Hydrolysis and Fermentation (SHF), with the addition of yeast transformed variables tape (5%, 10%, 15%, 20%) and the addition of NPK (0, 5%, 10%, 15%, 20% ). Bioethanol fermented bioetanolnya concentration measured using Alkoholmeter and bioethanol characteristic tests by measuring the density and viscosity. From hasi lpenelitian, obtained the highest ethanol concentration is 6% achieved on the addition of yeast 15% and 20% NPK. Density and viscosity of ethanol in the amount of 0.8482 g / ml and 1.6809 cP achieved with the addition of yeast 15% and 15% NPK.Keywords: bioethanol, rice straw, Saccharomyces cereviciae, cellulose
Pre Treatment Air Gambut Dengan Lempung Cengar Dan Penyisihan Zat Organik Dan Kekeruhan Dengan Membran Ultrafiltrasi Sistem Aliran Cross-Flow Lasmita, Revi; Daud, Syarfi; Asmura, Jecky
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Water is an environment element that is needed to support all human life. Peat water is containing a Natural Organic matter (NOM) that make it brown, taste and smelling. Peat water quality not suitable with water quality standards Permenkes No. 416/MENKES/PER/IX/1990. One of the peat water treatment methods used in this study is pre treatment of coagulation-flocculation and ultrafiltration membrane. This study aims to determine the removal efficiency of organic matter and turbidity in the pre treatment of coagulation-flocculation using coagulants Cengar Clay, coagulants Cengar Clay to decrease organic matter and turbidity, determine the performance of membrane for flux and rejection of organic matter and turbidity with and without pre treatment of coagulation-flocculation, determine decrease of organic matter and turbidity in peat water treatment using ultrafiltration membrane with pre treatment of coagulation-flocculation. The highest removal efficiency in coagulation-flocculation for organic matter parameter and turbidity obtained at a dose of 100 ml with a variation efficiency value of 47,733% dan 70,484%. The highest flux ultrafiltration membrane with and without pre treatment of coagulation-flocculation obtained at a pressure of 1,5 bar. Rejection coefficient organic matter and high turbidity ultrafiltration membrane without pre treatment is obtained at a pressure of 0,5 bar respectively by 20,6% dan 96,9%. Rejection coefficient organic matter and high turbidity ultrafiltration membrane with pre treatment is obtained at a pressure of 0,5 bar respectively by 92% dan 100%. Decrease in organic matter and turbidity with the pre treatment of coagulation-floccultion and ultrafiltration membrane from 118,5 mg/l KMnO4 to 9,640 mg/l KMnO4 and 31 NTU to 0 NTU.Keywords: Cengar Clay, Coagulation-Flocculation, Peat Water, Ultrafiltration Membrane.
Pengaruh Temperatur Dan Katalis Lempung Aktif Pada Pengolahan Sampah Plastik Jenis Polypropylene Dengan Metode Pirolisis Shaleh, Idries Hamidi; Daud, Syarfi; Bahruddin, Bahruddin
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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The increasing amounts of plastic wastes generate enormous environmental problems because its nonbiodegradable properties. Various attempts have been done to reduce plastic waste. One of the way to reuse the plastic waste is converted to the liquid fuel by pyrolisis process. Pyrolysis, while can decomposed plastic safely, its product can be alternative source of fuel. The purpose of this study is to observe the effect of process variable (process temperature and active clay catalyst) for yield form polypropylene plastic and generated pyrolysis liquid fuel characterization. The pyrolysis process was carried out at 300 oC, 350 oC, 400 oC and variation of active clay catalyst to 0.5%, 1%, 1.5% and non-catalyst for polypropylene plastic and with reaction time of 120 min. The results of this study resulted in the highest yield of 65.86% at 400oC and 1.5% active clay catalyst. Characterization of pyrolysis liquid fuel of density 0,784 gram / ml, kinematic viscosity 2,956 cSt, flash point 49 oC and caloric value 46,815 MJ/ kg.Keyword : pyrolysis, active clay, polypropylena, pyrolysis liquid fuel
Pre-Treatment Jerami Padi Menggunakan Proses Organosolv Dengan Variasi Konsentrasi Pelarut (CH3OH) Dan Waktu Pemasakan Siregar, Yohana; Yenie, Elvi; Daud, Syarfi
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

Rice straw is one of  agricultural waste products which has not to be used in huge area. Rice straw is usually used for some purposes, such as roofs and fodder. Biomass or rice straw is composed of three main components, namely cellulose (34.2%), hemicellulose (24.5%) and lignin (23.4%). Delignification aims to separate lignin from other compounds contained in the biomass by using an organic solvent which is methanol.  Due to this solvent is easier to obtain, more friendly to enviroment, and the solvent could be recovered back. Lignin contained in rice straw could potentially be used as a source of alternative materials in various industries, the one is adhesive industry. The aims of this research are to study the effect of the concentration of solvent and cooking time to the achieve the lignin. The study was conducted with a cooking time of  60; 120; and 180 minutes, the concentration of methanol 65; 75; 85; and 95 % w/w. The process steps in this research include size reduction by using mixing, cooking (delignification) using methanol, then washing and filtering stages. In this research, the lignin yield best at 13.6 % which was obtained at cooking time of 120 minutes with 65 % methanol concentration and the lignin content of 20.5 % w/w. Lignin was analyzed functional groups with the Fourier Transform Infra Red spectroscopy (FTIR ) .  Keywords: Cooking, Delignification, Fourier Transform Infra Red spectroscopy (FTIR), Lignin, Organosolv, Rice Straw
Pengaruh Massa Dan Ukuran Partikel Adsorben Kulit Singkong Terhadap Efisiensi Penyisihan Fe Pada Air Gambut Afmarenti, Winda; Daud, Syarfi; Andesgur, Ivnaini
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
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Abstract

Peat water is surface water are blackish brown and metals Fe which requires effective and efficient processing to be worthy for use by the public. Various types of adsorbents continue to be developed, one of which is the cassava skin adsorbent. Thepurpose of this study was to determine metal removal efficiency of Fe in the peat water, calculating the adsorption capacity and determine the appropriate type of isotherm. Fixed variables used in this study is the stirring speed of 100 rpm and acontact time of 60 minutes. For independent variables used consisted of adsorbent mass variation of 0.5; 1; 1.5; 2 g and a particle size variation -50+100; -100+170 and -170 mesh. Removal efficiency of Fe metals concentrations higher 75,46% by mass of adsorbent 2 g with a particle size of -170 mesh. Metal adsorption capacity of Fe achieved the highest on the mass of 0.5 grams with a particle size of -170 mesh amounted to 0,2928 mg Fe/g. Types of adsorption isotherms corresponding to Fe by cassava skin adsorbents is Freundlich isotherm with R2 values of 0.9508.Keywords: Adsorbent, Adsorption, Cassava Skin, Fe, Peat Water.
Application of Activated Carbon Compost Raw Material As Adsorbent For Removal Of Peat Water Dyes Desmawita, Dwi; Yenie, Elvi; Daud, Syarfi
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5, No 1 (2018): Wisuda April Tahun 2018
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Abstract

Peat water has a low pH (3-5), brown (124-850 PtCo), and contains many organic substances that do not meet the standards of water quality requirements as Permenkes No.416/MENKES/PER/IX/1990. Therefore it is necessary for processing methods to eliminate pollutants contained in the peat water so it can be used according to quality standards, either by adsorption. Adsorbent used in this research is compost. Compost carbonized by variation of 30, 60 and 90 minutes, which is activated in physics at a temperature of 500 ° C. Adsorbent mass variations as much as 1, 2, 3, 4 and 5 grams with a stirring speed of 100 rpm for 120 minutes. Characteristics of activated carbon in the form of compost moisture content, ash content, volatile and fixed carbon content obtained the best results in 60 minutes with a water content of 4.00%; ash content 0.99% volatile 1.57% and fixed carbon 97.44%. The efficiency of color reduction was measured using a UV-VIS spectrophotometer. The result showed that the highest efficiency was 81,63% at carbonization time 60 minutes with mass 5 gram and the lowest efficiency value was 66,57% at carbonization time 30 minutes with mass 1 gram.Keywords : Adsorbent, activated carbon, compost, color.
Pengaruh Massa Dan Ukuran Partikel Adsorben Sabut Kelapa Terhadap Efisiensi Penyisihan Fe Pada Air Gambut Istighfarini, Sri Ayu Emy; Daud, Syarfi; Hs, Edward
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
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Peat water is surface water are blackish brown and metals Fe which requires effective and efficient processing to be worthy for use by the public. Various types of adsorbents continue to be developed, one of which is the coconut fiber adsorbent. The purpose of this study was to determine metal removal efficiency of Fe in the peat water, calculating the adsorption capacity and determine the appropriate type of isotherm. Fixed variables used in this study is the stirring speed of 150 rpm and a contact time of 60 minutes. For independent variables used consisted of adsorbent mass variation of 0.5, 1, 1.5, 2 g and a particle size variation 100, 140 and 200 mesh. Removal efficiency of Fe metal concentrations higher 84.67% by mass of adsorbent 2 g with a particle size of 200 mesh. Metal adsorption capacity of Fe achieved the highest on the mass of 0.5 grams with a particle size of 200 mesh amounted to 0.09596 mg Fe / g. Types of adsorption isotherms corresponding to Fe by coconut fiber adsorbents is Freundlich isotherm with R2 values of 0.9783 for Fe.Keywords : Adsorption, Adsorbent, Peat Water, Coconut Fiber.
Pengaruh Waktu Dan Massa Terhadap Penyerapan Logam Fe Dalam Air Gambut Menggunakan Adsorben Sekam Padi Jannah, Roudhatul; Daud, Syarfi; Edward, Edward
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
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Rice husk is an abundant agricultural waste and has the potential to be used as a source of activated carbon for adsorbents. The purpose of this study was to determine the efficiency of removal of Fe in peat water, calculate the adsorption capacity, and compare with the quality standards of the Republic of Indonesia Ministry of Health No. 416 / MENKES / PER / IV / 2010 concerning drinking water quality standards. The fixed variables used in this study were stirring speed 180 rpm, carbonization temperature of 250oC, sieve size of 70 mesh, and HCL 4N activator. The independent variables used consisted of variations in mass of adsorbent 1; 1.5; 2; 2.5 grams and variations in time 30, 60, 90 and 120 minutes. The removal efficiency of Fe metal concentration was 79.7% in the mass of 2.5gr adsorbent with a contact time of 30 minutes. The highest adsorption capacity of Fe metal was achieved at 1gr mass with 90 minutes contact time of 0.212 mg Fe / gr. The results showed that Fe parameters were in accordance with Permenkes No. 416 / MENKES / PER / IV / 2010. Keywords: Adsorption, Adsorbent, Peat Water, Rice Husk
Penyisihan Kadar Fosfat Pada Limbah Cair Laundry Menggunakan Biokoagulan Cangkang Kepiting (Brachyura) Mashitah, Siti; Daud, Syarfi; Asmura, Jecky
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
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Biocoagulant is a natural coagulant that has an active substance and has a role as cationic which is able to bind colloidal particles in water. Chitosan is a non-toxic, easy-to-degrade and polyelectrolyte biocogulant that can be found in crustacean animals especially in crabs (Brachyura). The availability of crab shell waste has a huge potential to be used as raw material for making chitosan. High concentration of detergent in water can cause water quality to decrease and environmental pollution in the form of increase of phosphate level, so that the previous processing is needed by using coagulation-flocculation method. The research process was done gradually starting from the extraction of crab shells to chitosan by deproteination process, demineralization, and deacetylation, followed by Coagulation-flocculation method. The study was conducted by varying the dose of coagulant by 150 mg / L, 200 mg / L, 250 mg / L and 300 mg / L. The effluent was then analyzed by the laboratory, for COD parameters referring to SNI 06-6989.2-2004, and phosphate refers to SNI 06-6989.31-2005. The result of the analysis was then compared with the PERMENLH / 5/2014 quality standard. Based on the laboratory results, after analyzing the concentration of the parameters tested, it showed that the maximum allowance of phosphate parameters were 81.84% respectively at 200 mg / L coagulant dose with stirring speed of 150 rpm for 2 min and 60 rpm for 15 min followed by deposition for 30 min.Keywords:Biocoagulant, chitosan, coagulation-flocculation
Pengaruh Massa Dan Ukuran Partikel Adsorben Daun Nanas Terhadap Efisiensi Penyisihan Fe Pada Air Gambut reyra, Anilza Silvi; Daud, Syarfi; Yenti, Silvia Reni
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
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Peat water is surface water are blackish brown and metals Fe which requires effective and efficient processing to be worthy for use by the public. Various types of adsorbents continue to be developed, one of which is the pineapple leaf adsorbent. The purpose of this study was to determine metal removal efficiency of Fe in the peat water, calculating the adsorption capacity and determine the appropriate type of isotherm. Fixed variables used in this study is the stirring speed of 120 rpm and a contact time of 90 minutes. For independent variables used consisted of adsorbent mass variation of 1,5; 2; 2,5; 3 g and a particle size variation 80, 100 and 120 mesh. Removal efficiency of Fe metal concentrations higher 76,14% by mass of adsorbent 3 g with a particle size of 120 mesh. Metal adsorption capacity of Fe achieved the highest on the mass of 1,5 grams with a particle size of 120 mesh amounted to 0,092 mg Fe / g . Types of adsorption isotherms corresponding to Fe by pineapple leaf adsorbents is Freundlich isotherm with R2 values of 0,927 for Fe.Keywords : Adsorption, Adsorbent, Peat Water, pineapple leaf
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 Dewi Fitria Dita Yusrita Edward Edward Edward Hs Edward HS Edward, Edward Edy Saputra Elvi Yenie, Elvi Evi Royana Febriana, Hertina Firdha Ozani Rosselda Fahmi Fitri, Rizki Febriani Irpan Syafrianda Irwinsyah, Irwinsyah Isra Desmita Putri Istighfarini, Sri Ayu Emy Ivnaini Andesgur Ivnaini Andesgur, Ivnaini 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 Fauzi 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 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