Gurum Ahmad Pauzi, D. Rahma, Sri Wahyu Suciyati, Arif Surtono
In this research, the lithium-ion 48 Volt battery charging system's design was carried out on the prototype electric car using the boost converter tool. Boost converter consists of several circuit systems, namely oscillator circuit, trigger circuit, switching circuit, inductor, and DC output. IC TL 494 as pulse and frequency wave generator, used to regulate the switching process on the MOSFET circuit in the boost converter. This research was conducted by presenting variations in the inductor wire's diameter to determine the result of the current output used for the filling process by varying the diameter by 0.8 mm, 4 mm, and 8 mm. The number of wire twists used remains 5:27 and produces an output voltage boost converter of 54 Volts. The results showed the inductor wire's diameter affected the output of the boost converter and the length of battery charging time on the electric car. The length of time of battery draining at the wire's diameter is 0.8 mm, which is for 680 minutes, at the wire 4 mm diameter for 290 minutes, and at the diameter of the wire, 8 mm is for 400 minutes. The boost converter has the advantage of being more efficient in terms of dimensions, resulting in 3 times the voltage and power increase compared to the input voltage. The maximum panel input power of 14.5 Watts when added boost converter maximum power increased by 47.84 Watts.
在本研究中，利用升压变换器工具在原型电动汽车上进行了48伏锂离子电池充电系统的设计。升压变换器由几个电路系统组成，即振荡电路、触发电路、开关电路、电感和直流输出。集成电路tl494作为脉冲和频率波发生器，用于调节升压变换器中MOSFET电路的开关过程。本研究通过呈现电感线直径的变化来确定填充过程中使用的电流输出结果，通过改变直径0.8 mm, 4 mm和8 mm。使用的电线扭转数仍然为5:27，并产生54伏的输出电压升压转换器。结果表明，电感导线的直径对升压变换器的输出和电动汽车电池充电时间的长短有影响。电池在导线直径为0.8 mm处的放电时间为680分钟，在导线直径为4mm处的放电时间为290分钟，在导线直径为8mm处的放电时间为400分钟。升压变换器的优点是在尺寸方面效率更高，与输入电压相比，电压和功率增加了3倍。面板的最大输入功率为14.5瓦，当增加升压转换器的最大功率时提高了47.84瓦。
{"title":"Rancang Bangun Prototipe Pengoptimal Charging Baterai pada Mobil Listrik dari Pembangkit Tenaga Surya dengan Menggunakan Sistem Boost Converter","authors":"Gurum Ahmad Pauzi, D. Rahma, Sri Wahyu Suciyati, Arif Surtono","doi":"10.23960/JEMIT.V1I2.19","DOIUrl":"https://doi.org/10.23960/JEMIT.V1I2.19","url":null,"abstract":"In this research, the lithium-ion 48 Volt battery charging system's design was carried out on the prototype electric car using the boost converter tool. Boost converter consists of several circuit systems, namely oscillator circuit, trigger circuit, switching circuit, inductor, and DC output. IC TL 494 as pulse and frequency wave generator, used to regulate the switching process on the MOSFET circuit in the boost converter. This research was conducted by presenting variations in the inductor wire's diameter to determine the result of the current output used for the filling process by varying the diameter by 0.8 mm, 4 mm, and 8 mm. The number of wire twists used remains 5:27 and produces an output voltage boost converter of 54 Volts. The results showed the inductor wire's diameter affected the output of the boost converter and the length of battery charging time on the electric car. The length of time of battery draining at the wire's diameter is 0.8 mm, which is for 680 minutes, at the wire 4 mm diameter for 290 minutes, and at the diameter of the wire, 8 mm is for 400 minutes. The boost converter has the advantage of being more efficient in terms of dimensions, resulting in 3 times the voltage and power increase compared to the input voltage. The maximum panel input power of 14.5 Watts when added boost converter maximum power increased by 47.84 Watts.","PeriodicalId":15738,"journal":{"name":"Journal of Energy, Material, and Instrumentation Technology","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77721963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yohanes W.M Purba, Pulung Karo Karo, Ediman Ginting
This research Coal is one of the sedimentary fossil fuels that can ignite, is formed from organic sediment, and the remains of plants are then formed through the process of coalification. The main element consists of carbon, hydrogen, and oxygen. The formation of coal has certain conditions and only occurs in certain eras throughout geological history. The carbon age was approximately 340 million years ago. In the Permian Age or the Paleozoic era, 270 million also formed the most productive coal which is almost the entire coal deposit (black coal) in other parts of the earth. In this study we conducted at the Laboratory of PT. Bukit Asam tbk. Observation Results in the Study of Average Volatile Matter 19.11, Max Volatile Matter value 38.34, Min Vollatie Matter value 11.34. And the Average Calorie Result of 7578.5 Kacl / Kg, Max Calorie Value of 8046 Kcal / Kg. In this study, it was proved that coal samples were Anthracite types.
{"title":"Analisis Batubara Jenis Antrasit di PTBA Berdasarkan Kandungan Volatile Matter dan Kalori","authors":"Yohanes W.M Purba, Pulung Karo Karo, Ediman Ginting","doi":"10.23960/JEMIT.V1I1.9","DOIUrl":"https://doi.org/10.23960/JEMIT.V1I1.9","url":null,"abstract":"This research Coal is one of the sedimentary fossil fuels that can ignite, is formed from organic sediment, and the remains of plants are then formed through the process of coalification. The main element consists of carbon, hydrogen, and oxygen. The formation of coal has certain conditions and only occurs in certain eras throughout geological history. The carbon age was approximately 340 million years ago. In the Permian Age or the Paleozoic era, 270 million also formed the most productive coal which is almost the entire coal deposit (black coal) in other parts of the earth. In this study we conducted at the Laboratory of PT. Bukit Asam tbk. Observation Results in the Study of Average Volatile Matter 19.11, Max Volatile Matter value 38.34, Min Vollatie Matter value 11.34. And the Average Calorie Result of 7578.5 Kacl / Kg, Max Calorie Value of 8046 Kcal / Kg. In this study, it was proved that coal samples were Anthracite types.","PeriodicalId":15738,"journal":{"name":"Journal of Energy, Material, and Instrumentation Technology","volume":"121 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80566431","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This research was conducted to determine the effect of sintering time on the formation of the superconducting phase BSCCO-2212 by calculating the level of purity of the phases formed and looking at the microstructure. The variation of sintering time was 10, 20, 30 and 40 hours using the wet mixing method. The sample was calcinated with 800 °C for 10 hours and sintered with 830 °C. The XRD’s characterization result shows a decrease in phase purity with increasing the sintering time. The relative high volume fraction of the BSCCO-2212/ts10 sample is 90,48% while, the lowest volume fraction of BSCCO-2212/tc40 is 50,74%. The relative high orientation degree of BSCCO-2212/ts20 is 18,47% and the lowest orientation degree of BSCCO-2212/ts10 is 8,4%. The SEM’s characterization result shows of all samples have been oriented and have relatively little space between slabs (voids).
{"title":"Pengaruh Variasi Waktu Sintering Terhadap Pertumbuhan Fase Bahan Superkonduktor BSCCO-2212 dengan Kadar Ca=1,10 Menggunakan Metode Pencampuran Basah","authors":"Karlina Rahmah, S. Suprihatin, Pulung Karo Karo","doi":"10.23960/JEMIT.V1I1.5","DOIUrl":"https://doi.org/10.23960/JEMIT.V1I1.5","url":null,"abstract":"This research was conducted to determine the effect of sintering time on the formation of the superconducting phase BSCCO-2212 by calculating the level of purity of the phases formed and looking at the microstructure. The variation of sintering time was 10, 20, 30 and 40 hours using the wet mixing method. The sample was calcinated with 800 °C for 10 hours and sintered with 830 °C. The XRD’s characterization result shows a decrease in phase purity with increasing the sintering time. The relative high volume fraction of the BSCCO-2212/ts10 sample is 90,48% while, the lowest volume fraction of BSCCO-2212/tc40 is 50,74%. The relative high orientation degree of BSCCO-2212/ts20 is 18,47% and the lowest orientation degree of BSCCO-2212/ts10 is 8,4%. The SEM’s characterization result shows of all samples have been oriented and have relatively little space between slabs (voids).","PeriodicalId":15738,"journal":{"name":"Journal of Energy, Material, and Instrumentation Technology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88298230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Erviana Erviana, Amir Supriyanto, S. Suciyati, Arif Surtono
Bio-battery is defined as an energy storage device where the energy source comes from organic compounds. The electrical characteristics of the bio-battery can be obtained using to copper (Cu) and zinc (Zn) electrode pairs. Cassava pulp is used as the electrolyte. Cassava pulp is being fermented for 48 hours, 96 hours, and 144 hours and added 4% formalin. The electrolyte cell consists of 20 cell batteries in series with each mass is ±30 grams. The electrical characteristics of fermented cassava pulp are measured with 4 watts LED load and without load. The results show that the highest voltage is 20.66 V which is obtained by 144 hours fermented cassava pulp. The electrical characteristics in this research tend to constant due to the addition of preservatives (formalin).
{"title":"Analisis Karakteristik Elektrik Onggok Singkong Fermentasi yang Diawetkan sebagai Pasta Bio-Baterai","authors":"Erviana Erviana, Amir Supriyanto, S. Suciyati, Arif Surtono","doi":"10.23960/JEMIT.V1I1.10","DOIUrl":"https://doi.org/10.23960/JEMIT.V1I1.10","url":null,"abstract":"Bio-battery is defined as an energy storage device where the energy source comes from organic compounds. The electrical characteristics of the bio-battery can be obtained using to copper (Cu) and zinc (Zn) electrode pairs. Cassava pulp is used as the electrolyte. Cassava pulp is being fermented for 48 hours, 96 hours, and 144 hours and added 4% formalin. The electrolyte cell consists of 20 cell batteries in series with each mass is ±30 grams. The electrical characteristics of fermented cassava pulp are measured with 4 watts LED load and without load. The results show that the highest voltage is 20.66 V which is obtained by 144 hours fermented cassava pulp. The electrical characteristics in this research tend to constant due to the addition of preservatives (formalin).","PeriodicalId":15738,"journal":{"name":"Journal of Energy, Material, and Instrumentation Technology","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74478061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wahyuning Ramadhanta Ardanti, Yanti Yulianti, A. Riyanto, S. Syafriadi
This study about burn up calculations on the HCLWR reactor with two dimensional hexagonal geometric models of uranium using SRAC COREBN has been carried. This study used uranium-235 and uranium-238 as the fuels, light water as coolant and moderator. The calculation was done with computational simulation of COREBN. The calculation aims to produce a conversion ratio more than 1 and a critical multiplication factor (keff). The research used fuels enrichment, burn up period, burn up step, linier power and volume fraction parameters. The percentage of enrichment from U1 and U3 were 3% and U2 was 2,5%. The volume fraction of each material was 52% fuels, 12% cladding, and 36% coolant, the reactor operating period for 548 days with 6 step of burn up then the reactorpower is 2400 MW and the linear poweris 1,792722 MW/cm. The calculation of conversion ratio was 1,01233 and keff was 0,901.
{"title":"Perhitungan Burn Up pada Reaktor HCLWR Model Geometri Heksagonal Dua Dimensi BahanBakar Uranium menggunakan SRAC COREBN","authors":"Wahyuning Ramadhanta Ardanti, Yanti Yulianti, A. Riyanto, S. Syafriadi","doi":"10.23960/JEMIT.V1I1.8","DOIUrl":"https://doi.org/10.23960/JEMIT.V1I1.8","url":null,"abstract":"This study about burn up calculations on the HCLWR reactor with two dimensional hexagonal geometric models of uranium using SRAC COREBN has been carried. This study used uranium-235 and uranium-238 as the fuels, light water as coolant and moderator. The calculation was done with computational simulation of COREBN. The calculation aims to produce a conversion ratio more than 1 and a critical multiplication factor (keff). The research used fuels enrichment, burn up period, burn up step, linier power and volume fraction parameters. The percentage of enrichment from U1 and U3 were 3% and U2 was 2,5%. The volume fraction of each material was 52% fuels, 12% cladding, and 36% coolant, the reactor operating period for 548 days with 6 step of burn up then the reactorpower is 2400 MW and the linear poweris 1,792722 MW/cm. The calculation of conversion ratio was 1,01233 and keff was 0,901.","PeriodicalId":15738,"journal":{"name":"Journal of Energy, Material, and Instrumentation Technology","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87145563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
i ABSTRAK PENGARUH WAKTU PENAMBAHAN DOPING SULFUR TERHADAP LUAS PERMUKAAN DAN STRUKTUR KRISTAL NANOTITANIA MENGGUNAKAN METODE SOL GEL Oleh ANGGI PUSPITA DEWI Sintesis titania doping sulfur (S-TiO2) dilakukan dengan metode sol-gel. Titanium isopropoxide (TTIP), tween-80, isopropanol dan asam sulfat (H2SO4) sebagai sumber doping sulfur digunakan sebagai prekursor. Penelitian ini bertujuan untuk mengetahui pengaruh doping sulfur selama 0, 30, 60, 90 dan 120 menit menggunakan pompa injeksi. Bubuk titania dikalsinasi pada 450 ℃ selama 5 jam. S-doping TiO2 dikarakterisasi menggunakan difraksi sinar-X (XRD) dan luas permukaan (SAA). Hasil XRD menunjukkan bahwa fase yang diperoleh adalah fase anatase untuk semua sampel sedangkan hasil dari SAA menunjukkan bahwa, sampel S-02 memperoleh luas permukaan terbesar yaitu 95,310 m2/g dan hasil perhitungan dari ukuran partikel dari sampel S-02 diperoleh nilai 10,17 nm. Semakin kecil ukuran partikel yang diperoleh, semakin besar luas permukaan. Kata kunci: Doping sulfur, SAA, titania, XRD. ii ABSTRACT THE INFLUENCE OF SULFUR DOPING ADDITION TIME ON EXTENSIVE SURFACE AND CRYSTAL NANOTITANIA STRUCTURE USING SOL GEL METHOD By ANGGI PUSPITA DEWI Synthesis of sulfur doping titania (S- TiO2) was carried out by the sol-gel method. Titanium isopropoxide (TTIP), tween-80, isopropanol and asam sulfat (H2SO4) as a source of sulfur doping are used as the of preccursor. This study aims to determine the effect of sulfur doping for 0, 30, 60, 90 and 120 minutes using injection pumps. Titania powder was calcined at 450 ℃ for 5 hours. S-doping TiO2 was characterized using x-ray diffraction (XRD) and surface area analyzer (SAA). The XRD results showed that the phase obtained was the anatase phase for all samples while the results from the SAA showed that the S-02 sample obtained a surface area the biggest is of 95,310 m2/g and the results of the calculation of the particle size of the S-02 sample obtained a value of 10,17 nm. The smaller the particle size obtained, the greater the surface area. Keywords: Doping sulfur, SAA, titania, XRD.
{"title":"Pengaruh Waktu Penambahan Doping Sulfur terhadap Luas Permukaan dan Struktur Kristal Nanotitania Menggunakan Metode Sol Gel","authors":"Anggista Puspita Dewi","doi":"10.23960/jemit.v2i2.134","DOIUrl":"https://doi.org/10.23960/jemit.v2i2.134","url":null,"abstract":"i \u0000ABSTRAK \u0000PENGARUH WAKTU PENAMBAHAN DOPING SULFUR TERHADAP \u0000LUAS PERMUKAAN DAN STRUKTUR KRISTAL NANOTITANIA \u0000MENGGUNAKAN METODE SOL GEL \u0000Oleh \u0000ANGGI PUSPITA DEWI \u0000Sintesis titania doping sulfur (S-TiO2) dilakukan dengan metode sol-gel. Titanium \u0000isopropoxide (TTIP), tween-80, isopropanol dan asam sulfat (H2SO4) sebagai \u0000sumber doping sulfur digunakan sebagai prekursor. Penelitian ini bertujuan untuk \u0000mengetahui pengaruh doping sulfur selama 0, 30, 60, 90 dan 120 menit \u0000menggunakan pompa injeksi. Bubuk titania dikalsinasi pada 450 ℃ selama 5 jam. \u0000S-doping TiO2 dikarakterisasi menggunakan difraksi sinar-X (XRD) dan luas \u0000permukaan (SAA). Hasil XRD menunjukkan bahwa fase yang diperoleh adalah \u0000fase anatase untuk semua sampel sedangkan hasil dari SAA menunjukkan bahwa, \u0000sampel S-02 memperoleh luas permukaan terbesar yaitu 95,310 m2/g dan hasil \u0000perhitungan dari ukuran partikel dari sampel S-02 diperoleh nilai 10,17 nm. \u0000Semakin kecil ukuran partikel yang diperoleh, semakin besar luas permukaan. \u0000Kata kunci: Doping sulfur, SAA, titania, XRD. \u0000ii \u0000ABSTRACT \u0000THE INFLUENCE OF SULFUR DOPING ADDITION TIME ON \u0000EXTENSIVE SURFACE AND CRYSTAL NANOTITANIA \u0000STRUCTURE USING SOL GEL METHOD \u0000By \u0000ANGGI PUSPITA DEWI \u0000Synthesis of sulfur doping titania (S- TiO2) was carried out by the sol-gel method. \u0000Titanium isopropoxide (TTIP), tween-80, isopropanol and asam sulfat (H2SO4) as \u0000a source of sulfur doping are used as the of preccursor. This study aims to \u0000determine the effect of sulfur doping for 0, 30, 60, 90 and 120 minutes using \u0000injection pumps. Titania powder was calcined at 450 ℃ for 5 hours. S-doping \u0000TiO2 was characterized using x-ray diffraction (XRD) and surface area analyzer \u0000(SAA). The XRD results showed that the phase obtained was the anatase phase \u0000for all samples while the results from the SAA showed that the S-02 sample \u0000obtained a surface area the biggest is of 95,310 m2/g and the results of the \u0000calculation of the particle size of the S-02 sample obtained a value of 10,17 nm. \u0000The smaller the particle size obtained, the greater the surface area. \u0000Keywords: Doping sulfur, SAA, titania, XRD.","PeriodicalId":15738,"journal":{"name":"Journal of Energy, Material, and Instrumentation Technology","volume":"85 2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74609606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Henna leaves extract (Lawsonia inermis L) is used as a corrosion inhibitor in St37 steel soaked in 3% HCl corrosive medium. To find out the effect of inhibitor concentration on the corrosion rate of steel, the variation of inhibitor concentration is 0, 3, 5, 7 and 9%. Corrosion rate testing is done by mass loss method. Corrosion rate was tested on low carbon steel with and without inhibition of henna extract for 6 days. The results showed that the greater the concentration of inhibitor of henna extract used, the corrosion rate would decrease and the ability to inhibit corrosion would increase. The greatest corrosion efficiency occurred at a concentration of 9% with an efficiency of 88.84%. The results of X-Ray Diffraction (XRD) characterization showed that the phase formed was pure iron (Fe). Secondary Electron Microscopy (SEM) characterization showed uneven clusters and smaller sizes, holes and cracks were also less with the addition of inhibitory leaves extract than without the addition of inhibitory leaves extract. This result is reinforced by the percentage of corrosion products shown in the results of the characterization of Energy Dispersive Spectroscopy (EDS).
{"title":"Pengaruh Inhibitor Ekstrak Daun Inai (Lawsonia inermis L) Terhadap Laju Korosi Baja St37 dalam Larutan HCl 3%","authors":"Oricha Mutia Rani","doi":"10.23960/jemit.v2i3.147","DOIUrl":"https://doi.org/10.23960/jemit.v2i3.147","url":null,"abstract":"Henna leaves extract (Lawsonia inermis L) is used as a corrosion inhibitor in St37 steel soaked in 3% HCl corrosive medium. To find out the effect of inhibitor concentration on the corrosion rate of steel, the variation of inhibitor concentration is 0, 3, 5, 7 and 9%. Corrosion rate testing is done by mass loss method. Corrosion rate was tested on low carbon steel with and without inhibition of henna extract for 6 days. The results showed that the greater the concentration of inhibitor of henna extract used, the corrosion rate would decrease and the ability to inhibit corrosion would increase. The greatest corrosion efficiency occurred at a concentration of 9% with an efficiency of 88.84%. The results of X-Ray Diffraction (XRD) characterization showed that the phase formed was pure iron (Fe). Secondary Electron Microscopy (SEM) characterization showed uneven clusters and smaller sizes, holes and cracks were also less with the addition of inhibitory leaves extract than without the addition of inhibitory leaves extract. This result is reinforced by the percentage of corrosion products shown in the results of the characterization of Energy Dispersive Spectroscopy (EDS).","PeriodicalId":15738,"journal":{"name":"Journal of Energy, Material, and Instrumentation Technology","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87434652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study aims to determine the effectiveness of guava leaf extract as an inhibitor of St37 steel in 3% HCl corrosive medium. Weight reduction method is used to determine the value of the resulting corrosion rate. Soaking of St37 steel at 80 ° C and 100 ° C was carried out with variations in the addition of 0%, 4%, and 8% inhibitor concentrations. The results show the lowest corrosion rate is at a concentration of 8% at an immersion temperature of 80 ° C with an inhibitor efficiency value of 84.07%. Fourier transform infra red (FTIR) analysis results showed that tannin content was found in guava leaf extract. The x-ray diffraction (XRD) results show that the phase formed is pure Fe phase. The results of scanning electron microscopy (SEM) show the presence of lumps on steel surfaces of various sizes which are the product of corrosion. This is reinforced by the results of energy dispersive spectroscopy. (EDS) which shows that the increasing number of lumps on the steel surface leaves fewer Fe elements and more FeO corrosion products.
{"title":"Analisis Laju Korosi Baja St37 dengan Inhibitor Ekstrak Daun Jambu Biji dalam Medium Korosif HCl 3% pada Suhu 80°C dan 100°C","authors":"Putri Vidia Citra","doi":"10.23960/jemit.v2i3.148","DOIUrl":"https://doi.org/10.23960/jemit.v2i3.148","url":null,"abstract":"This study aims to determine the effectiveness of guava leaf extract as an inhibitor of St37 steel in 3% HCl corrosive medium. Weight reduction method is used to determine the value of the resulting corrosion rate. Soaking of St37 steel at 80 ° C and 100 ° C was carried out with variations in the addition of 0%, 4%, and 8% inhibitor concentrations. The results show the lowest corrosion rate is at a concentration of 8% at an immersion temperature of 80 ° C with an inhibitor efficiency value of 84.07%. Fourier transform infra red (FTIR) analysis results showed that tannin content was found in guava leaf extract. The x-ray diffraction (XRD) results show that the phase formed is pure Fe phase. The results of scanning electron microscopy (SEM) show the presence of lumps on steel surfaces of various sizes which are the product of corrosion. This is reinforced by the results of energy dispersive spectroscopy. (EDS) which shows that the increasing number of lumps on the steel surface leaves fewer Fe elements and more FeO corrosion products.","PeriodicalId":15738,"journal":{"name":"Journal of Energy, Material, and Instrumentation Technology","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87571969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ABSTRAK PENGARUH LAJU PENAMBAHAN DOPING FOSFOR TERHADAP AKTIVITAS FOTOKATALIS NANOTITANIA MENGGUNAKAN METODE SOL-GEL Oleh YUNITA Nanotitania yang didoping fosfor (P-TiO2 ) disintesis menggunkan metode sol-gel. Tujuan dilakukan penelitian ini, yaitu untuk mengetahui pengaruh laju penambahan doping fosfor terhadap ukuran partikel dan aktivitas fotokatalis dari P-TiO2. Bahan awal yang digunakan yaitu tween 80, isopropil alkohol, titanium isopropoksida (TTIP), dan H3PO4 dengan perbandingan 11 ml: 60 ml: 7 ml: 0,2 ml. Penambahan doping fosfor divariasikan pada laju penambahannya 0,4 ml/jam; 0,2 ml/jam; 0,13 ml/jam; dan 0,1 ml/jam yang diaduk selama 24 jam. P-TiO2 dikalsinasi pada suhu 450˚C, kemudian dikarakterisasi menggunakan TEM untuk menganalisis ukuran partikel P-TiO2 dan uji menggunakan spektrofotometer UV-Vis untuk mengetahui aktivitas fotokatalisnya. Hasil karakterisasi TEM diperoleh ukuran partikel sampel P-TiO2 dengan laju penambahan doping 0,2 ml/jam sebesar (9,8 ± 1,4) nm. Berdasarkan uji menggunakan spektrofotometer UV-Vis, laju penambahan doping fosfor tidak berpengaruh secara signifikan terhadap peningkatan aktivitas fotokatalis P-TiO2. Namun pada sampel P-TiO2 dengan laju penambahan doping 0,2 ml/jam terjadi peningkatan aktivitas fotokatalis sedikit lebih tinggi. Kata kunci: doping fosfor, fotokatalis, nanotitania, remazol kuning, sol-gel. i ABSTRACT THE INFLUENCE OF RATE PHOSPHOR DOPING ADDITION TOWARD PHOTOCATALYST ACTIVITY OF NANOTITANIA USING SOL-GEL METHOD By YUNITA The phosphorus-doped nanotitania (P-TiO2) was synthesized by sol-gel method. The purpose of this study is to determine the effect of rate phosphorus doping addition toward photocatalyst activity of nantitania. Raw material used in this study were tween 80, isopropyl alcohol, titanium isopropoxide (TTIP), and H3PO4 with ratio of 11 ml: 60 ml: 7 ml: 0,2 ml. The rate of phosphorus doping addition was varied at 0,4 ml/ hours; 0,2 ml/hours; 0,13 ml/hours; and 0,1 ml/hours. P-TiO2 was calcined at 450˚C, then characterized by using Transmission Electron Microscopy (TEM) to analyze the particle size of P-TiO2 and UV-Vis spectrophotometer to determine the absorbance value. The results of TEM characterization by using imageJ software showed that particle size of P-TiO2 sample is (9,8 ± 1,4) nm. Based on result of spectrophotometer UV-Vis, the rate of phosphorus doping addition, there was no significant difference in increasing photocatalyst activity . However, sample with the rate of 0,2 ml/hour show that an increase in photocatalyst activity is slightly higher. Keywords: nanotitania, phosphor doped, photocatalyst, remazol yellow. ii
利用利用利用替代方法合成磷(P-TiO2)合成磷(son)对纳米光质活性增加的影响。本研究的目的是确定P-TiO2中增加磷剂量的速率对颗粒大小和光质活动的影响。最初使用的成分是tween、异丙基酒精、钛异丙唑(TTIP)和H3PO4，比11毫升:60毫升:7毫升:0.2毫升0.2 ml /小时;0,13毫升/小时;每小时0.1毫升搅拌24小时。温度的P-TiO2 dikalsinasi 450˚C,然后dikarakterisasi用TEM分析P-TiO2粒子的大小和试验用远UV-Vis知道fotokatalisnya活动。描述TEM结果粒度样品P-TiO2兴奋剂速度增加0.2 ml /小时(为9.8±1.4万)nm。根据UV-Vis光谱仪的测试，磷兴奋剂增加的速率对P-TiO2光谱仪活动的增加没有显著影响。但是在P-TiO2样本中，以每小时0.2毫克的剂量增加的速度，光质活动增加了一点。关键词:服用荧光粉、光催化剂、纳米粒子、黄藻、凝胶。我认为这项研究的目的是确定增长率和增长率之间的效果。这个研究中使用的生材料是10月80日、异丙醇、钛异丙酚(TTIP)和H3PO4与11毫升的含量:60毫升:7毫升:0.2毫升。0.2 ml /小时;0,13毫升/小时;每小时0.1毫升。P-TiO2是calcined at 450˚C,然后用传输电子Microscopy characterized by (TEM) to analyze P-TiO2之粒子大小和UV-Vis spectrophotometer到《absorbance个重大价值。TEM characterization之results:用imageJ软件那里那个粒子大小的P-TiO2样品是(9.8±1.4)nm。基于UV-Vis光谱仪的结果，磷的增量增加没有意义差异的照相活动。However，一个以0.2毫升/小时为单位的样本，这种增加的照相活动越来越高。小脑:纳米粒子，磷酸盐，照相质，黄绿色。二世
{"title":"Pengaruh Laju Penambahan Doping Fosfor terhadap Aktivitas Fotokatalis Nanotitania Menggunakan Metode Sol Gel","authors":"Yunita","doi":"10.23960/jemit.v2i2.133","DOIUrl":"https://doi.org/10.23960/jemit.v2i2.133","url":null,"abstract":"ABSTRAK \u0000PENGARUH LAJU PENAMBAHAN DOPING FOSFOR TERHADAP \u0000AKTIVITAS FOTOKATALIS NANOTITANIA MENGGUNAKAN METODE SOL-GEL \u0000Oleh \u0000YUNITA \u0000Nanotitania yang didoping fosfor (P-TiO2 ) disintesis menggunkan metode sol-gel. Tujuan dilakukan penelitian ini, yaitu untuk mengetahui pengaruh laju penambahan doping fosfor terhadap ukuran partikel dan aktivitas fotokatalis dari P-TiO2. Bahan awal yang digunakan yaitu tween 80, isopropil alkohol, titanium isopropoksida (TTIP), dan H3PO4 dengan perbandingan 11 ml: 60 ml: 7 ml: 0,2 ml. Penambahan doping fosfor divariasikan pada laju penambahannya 0,4 ml/jam; 0,2 ml/jam; 0,13 ml/jam; dan 0,1 ml/jam yang diaduk selama 24 jam. P-TiO2 dikalsinasi pada suhu 450˚C, kemudian dikarakterisasi menggunakan TEM untuk menganalisis ukuran partikel P-TiO2 dan uji menggunakan spektrofotometer UV-Vis untuk mengetahui aktivitas fotokatalisnya. Hasil karakterisasi TEM diperoleh ukuran partikel sampel P-TiO2 dengan laju penambahan doping 0,2 ml/jam sebesar (9,8 ± 1,4) nm. Berdasarkan uji menggunakan spektrofotometer UV-Vis, laju penambahan doping fosfor tidak berpengaruh secara signifikan terhadap peningkatan aktivitas fotokatalis P-TiO2. Namun pada sampel P-TiO2 dengan laju penambahan doping 0,2 ml/jam terjadi peningkatan aktivitas fotokatalis sedikit lebih tinggi. \u0000Kata kunci: doping fosfor, fotokatalis, nanotitania, remazol kuning, sol-gel. \u0000i \u0000ABSTRACT \u0000THE INFLUENCE OF RATE PHOSPHOR DOPING ADDITION TOWARD PHOTOCATALYST ACTIVITY OF NANOTITANIA \u0000USING SOL-GEL METHOD \u0000By \u0000YUNITA \u0000The phosphorus-doped nanotitania (P-TiO2) was synthesized by sol-gel method. The purpose of this study is to determine the effect of rate phosphorus doping addition toward photocatalyst activity of nantitania. Raw material used in this study were tween 80, isopropyl alcohol, titanium isopropoxide (TTIP), and H3PO4 with ratio of 11 ml: 60 ml: 7 ml: 0,2 ml. The rate of phosphorus doping addition was varied at 0,4 ml/ hours; 0,2 ml/hours; 0,13 ml/hours; and 0,1 ml/hours. P-TiO2 was calcined at 450˚C, then characterized by using Transmission Electron Microscopy (TEM) to analyze the particle size of P-TiO2 and UV-Vis spectrophotometer to determine the absorbance value. The results of TEM characterization by using imageJ software showed that particle size of P-TiO2 sample is (9,8 ± 1,4) nm. Based on result of spectrophotometer UV-Vis, the rate of phosphorus doping addition, there was no significant difference in increasing photocatalyst activity . However, sample with the rate of 0,2 ml/hour show that an increase in photocatalyst activity is slightly higher. \u0000Keywords: nanotitania, phosphor doped, photocatalyst, remazol yellow. \u0000ii","PeriodicalId":15738,"journal":{"name":"Journal of Energy, Material, and Instrumentation Technology","volume":"47 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77993467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Research on the effect of the addition phosphorus doping using a syringe pump with the sol-gel method. The purpose of this study was to determine the effect of the addition rate of phosphorus doping to the crystal structure and specific surface area of TiO2. Doping increment rate used are 0,4; 0,2; 0,13 and 0,1 ml/hours of TiO2 samples were calcined at 450ºC for 5 hours. The powder was characterized by x-ray diffraction (XRD) and surface area analyzer (SAA) by the BET method. XRD diffractogram generally shows that the nanotitania crystal structure phase is anatase which is the result of TTIP synthesis as the main source of TiO2. Particle size analysis using XRD data on TiO2 with different rates in a row that is 10.13; 9.98; 9.25 and 10.33 nm. BET test results for each sample were 86.954; 87,367; 99,694; 96,295 and 96,187 m2/g. The results of XRD characterization can affect the surface area, getting smaller the particle size, the greater surface area will be obtained.
{"title":"Pengaruh Laju Penambahan Doping Fosfor terhadap Struktur Kristal dan Luas Permukaan Spesifik Nanotitania dengan Metode Sol Gel","authors":"Vidi Nurhidayah","doi":"10.23960/jemit.v2i2.135","DOIUrl":"https://doi.org/10.23960/jemit.v2i2.135","url":null,"abstract":"Research on the effect of the addition phosphorus doping using a syringe pump with the sol-gel method. The purpose of this study was to determine the effect of the addition rate of phosphorus doping to the crystal structure and specific surface area of TiO2. Doping increment rate used are 0,4; 0,2; 0,13 and 0,1 ml/hours of TiO2 samples were calcined at 450ºC for 5 hours. The powder was characterized by x-ray diffraction (XRD) and surface area analyzer (SAA) by the BET method. XRD diffractogram generally shows that the nanotitania crystal structure phase is anatase which is the result of TTIP synthesis as the main source of TiO2. Particle size analysis using XRD data on TiO2 with different rates in a row that is 10.13; 9.98; 9.25 and 10.33 nm. BET test results for each sample were 86.954; 87,367; 99,694; 96,295 and 96,187 m2/g. The results of XRD characterization can affect the surface area, getting smaller the particle size, the greater surface area will be obtained.","PeriodicalId":15738,"journal":{"name":"Journal of Energy, Material, and Instrumentation Technology","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81408240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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