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Rusdianasari

Politeknik Negeri Sriwijaya

Author-ID : 3311843

Aerospace Engineering Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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Articles

Pyrolysis Process of Fatty Acid Methyl Ester (FAME) Conversion into Biodiesel Bambang Irawan; Rusdianasari; Abu Hasan
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 1 No. 2 (2021): IJRVOCAS - August
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Biodiesel is a biomass fuel that can replace petroleum diesel fuel. One of the advantages of biodiesel fuel as renewable energy source that it is more environmentally friendly than fossil fuels because biodiesel significantly reduces greenhouse gas emissions compared to fossil fuels. FAME (fatty acid methyl ester) is a derivative product of CPO (crude palm oil) that has been treated both physically and chemically. The main advantage of FAME lies in the low content of impurities, especially sulphure and metal content. FAME comes from vegetable oil raw materials, which contain high enough fatty acids, around 61-62%, and nowadays, it is used as a mixture with petroleum diesel. The characteristics of biodiesel obtained from the conversion of FAME into biodiesel by pyrolysis at a temperature range of 160 – 200 oC indicate that the biodiesel produced is density 0.8475 kg/m3, viscosity 3.053 cSt, calculated cetane index (CCI) 48.5, flash point 59oC, moisture content 223 ppm, and sulphure content of 0.07% m/m. The results obtained are below the maximum limit of the specified biodiesel quality requirements.

Syngas Underground Coal Gasification (UCG) Testing of In-Situ Type Lignite Coal and Fracture Type Coal Julismi; Rusdianasari; Abu Hasan
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 1 No. 2 (2021): IJRVOCAS - August
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

The advancement and utilization of technology require energy, namely electricity and fuel energy. The increasing cost of fossil energy, the scarcity of non-renewable energy sources and the increasing energy demand requires diversification of energy resources. One of the new renewable energy sources currently being developed in Indonesia is Underground Coal Gasification (UCG). UCG is a new technology that utilizes unmined coal. In the UCG process, coal is burned underground and the syngas produced is collected through bore wells for processing or direct use. The resulting syngas is analyzed to see the effect of in-situ type of lignite coal and fractured type of coal on syngas production using the UCG method. Tests carried out on fracture-type lignite coal for 120 minutes with a sample weight of 1.3 kg obtained a CH4 gas concentration of 0.24%, which is relatively low compared to the in-situ type lignite coal sample CH4 gas concentration of 1.13%. The CO2 concentration was 54.46% in the fracture sample, and the In-Situ type sample was 52.19%. The O2 content with a value of 19.43% for the Fracture Type sample and 4.94% for the In-Situ type sample. Fracture Type and In-situ Lignite Coal produced fewer syngas products due to UCG testing than high-rank coals such as sub-bituminous and bituminous coal.

Analysis of the Performance of The Four-Blade Darrieus Wind Turbine at the Jamik Bukit Asam Mosque Complex Tanjung Enim South Sumatra: Analysis of the Performance of The Four-Blade Darrieus Wind Turbine at the Jamik Bukit Asam Mosque Complex Tanjung Enim South Sumatra Mustafa Kamal; Fatahul Arifin; Rusdianasari
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 1 No. 2 (2021): IJRVOCAS - August
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Several types of renewable energy have been developed, such as solar energy, biomass, hydro energy, geothermal, and wind energy. Wind energy is an up-and-coming alternative and renewable energy. Wind energy is more environmentally friendly than available energy sources and has more accessible operational and maintenance costs. Indonesia has a relatively small natural wind energy potential because the wind speed in Indonesia is on average 3-6 m/s due to its location. Geographically, it is located in the equatorial area, especially the Muara Enim area, South Sumatra. This study aims to design a prototype the four-blade darrieus type vertical axis wind turbine (VAWT) needed for the utilization of wind energy which is used for Coffee Shop electricity needs at the Jamik Bukit Asam Tanjung Enim Mosque complex, South Sumatra, with the conclusion that the wind turbine, wind turbine rotation, the magnitude of the output voltage and The current generated significantly affects the wind speed in the area.

Production of Disinfectant by Utilizing Eco-enzyme from Fruit Peels Waste Rusdianasari; Adi Syakdani; Muhammad Zaman; Febby Fitria Sari; Nabila Putri Nasyta; Rizka Amalia
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 1 No. 3 (2021): IJRVOCAS - December
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Organic waste is waste that contains carbon compounds that come from living things, such as fruit and vegetable waste. However, the community is still not able to manage it optimally, even though organic and non-organic waste can still be processed into useful products. This effective way can be realized through the manufacture of eco-enzymes that can be applied at the household level. Eco-enzyme is a liquid extract produced from the fermentation of vegetable and fruit residues with brown sugar as a substrate. The eco-enzyme has a strong sweet and sour fermented aroma due to the peels of oranges, pineapples, and papayas. This environmentally friendly enzyme can be produced using fruit peel, brown sugar, and water. Eco-enzyme solution when mixed with water, will react and can be used as a liquid disinfectant. Disinfectants commonly used are generally derived from synthetic chemicals in the form of artificial chemicals. One of the natural ingredients that can be used as a disinfectant is eco-enzyme liquid. This study aims to make a disinfectant using an environmentally friendly enzyme liquid, namely eco-enzyme. The method used in this research is a mixed method of fermentation of orange peel waste, pineapple and papaya, brown sugar, and water with a ratio of 3:1:10. Analysis for eco-enzyme pH, and Phytochemicals, while for disinfectants include pH, total phenol content with UV-Vis Spectrophotometer, hard water emulsion stability, and antibacterial test. All samples of the disinfectant product met the requirements of SNI 06 – 1842 of 1995, besides that, the best disinfectant product was found in a ratio of 1:10 which could reduce bacterial growth.

Study Combination Vertical Wind Turbine in The Mining Area RD. Kusumanto; Fatahul Arifin; Carlos R. S.; Dicky Septrianto; Rusdianasari; RM. Fauzi; Yusuf Dewantoro Herlambang
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 2 No. 1 (2022): IJRVOCAS - April
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v2i1.96

Wind Technology has developed rapidly because it is environmentally friendly alternative energy. The speed of the wind to run the wind turbine is able to exhaust a fan and ordinary wind sources. Tanjung Enim is one of Indonesia's areas, that have comparatively little wind energy. It has a wind velocity of 1.5 - 3 m/s. Tanjung Enim has coal mining, and the blower is used for air in the conveyor line of the mining. It is the potential to generate wind turbines. because the wind velocity in this area is 8 m /s. This study examines the enactment of blades on vertical wind turbines, namely Savonius with 3 blades combine with Darrius 3 blades. The result of the voltage output currently created by of vertical wind turbine maximum is 8.42 Volt and 345 Ampere.

IoT Monitoring for Solar Powered Pump Applied in Hydroponic House Yurika Islamiati; Tresna Dewi; Rusdianasari
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 2 No. 2 (2022): IJRVOCAS - August
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v2i2.102

Photovoltaic systems are used and utilized as electricity needs in many developed countries, including Indonesia. Currently, photovoltaic systems are an alternative source of electricity that is cheap, affordable and easy to apply in public facilities to use in laboratories. Public and government awareness of the decline in fossil fuels and pollution caused by the use of conventional power plants increases the application of renewable energy as an alternative greening in Indonesia. Technology is growing rapidly from year to year, one of which can be seen in the world of agriculture. This development has resulted in reduced farming land, especially in urban areas. So, there are several innovations that have emerged to increase crop productivity. With these problems, hydroponic techniques can be combined with IoT (Internet of Things) technology. The use of IoT is increasingly being used both on devices and in products that require connections such as wireless sensors, smart meters, and home automation systems. The quality of an IoT product can be seen from several parameters, namely low power consumption, longer range, wireless connectivity and higher data processing capabilities. IoT can be interpreted as communication between one device and another using the internet. This study provides recommendations for the utilization of PV system applications in the use of hydroponic plants and will display the results of data measurements in the field and discuss data on measuring battery voltage, current, power, solar panel voltage, solar current panels and irradiance.

Characterization Biofuel from Empty Fruit Bunch through Thermal Cracking Daya Wulandari; Rusdianasari; Muhammad Yerizam
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 2 No. 2 (2022): IJRVOCAS - August
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v2i2.104

Empty Fruit Bunches (EFB) are oil palm waste that has the potential as a source of bioenergy because it contains lignocellulose (cellulose, hemicellulose, and lignin) so that it can be converted into biofuel through thermal cracking, adsorption, and distillation processes. Thermal cracking is the decomposition of the chemical content of biomass by utilizing heat without a mixture of oxygen at a temperature of 200oC–600oC. This study aims to obtain the characteristics of the raw material of EFB in the form of proximate, ultimate, lignin, and biofuel produced. The research was conducted using a thermal cracking reactor designed to control the temperature at 300oC, 350oC, 400oC, and 450oC. The results showed that the raw material characteristics of EFB from proximate were 13.66% water content, 8.74% ash content, 58.66% volatile matter and 18.90% fixed carbon. This water content is relatively high. This is because the drying process on the material has not run perfectly. The ultimate result showed that the EFB had a C content of 54.45%, H content of 5.00%, and O content of 16.27%. The atomic ratio obtained from the ultimate analysis can indicate the amount of calorific value that can be used for certain fuels. The smaller the atomic ratio value contained, the more significant the calorific value contained in a particular fuel. Klason method was carried out to decrease the level of lignin through 4 stages; the lignin content without delignification was resulting into 24.87%, the addition of aquadest was resulting into18.71%, the addition of 5% HCl resulting into 15.34%, and 10% HCl resulting into 14.49%. Delignification of 10% HCl is the pretreatment process before the thermal cracking. The thermal cracking process forms steam; the steam is then condensed to obtain bio-oil. The formed bio-oil was kept to separate the oil from tar. In order to obtain good biofuel quality, adsorption is carried out with zeolite adsorbent, which has been activated with HCL. A comparison of the physical properties of bio-oil before and after adsorption shows a color difference from brownish black to the adsorbed bio-oil, which is distilled to separate the heavy and light fractions. The temperature of 450oC at thermal cracking is close to optimum; when the temperature is increased, the cracking process will be more straightforward and occur optimally. The biofuel produced in this study was tested for its characteristics such as, density (927-1086.68 Kg/m3), kinematic viscosity (1.17-1.43 mm2/s), and flash point (66.00-70, 23oC). The biofuel product produced is dominated by C5-C15 compounds (45.07%) according to the results of GC-MS analysis.

Utilizing an Oxyhydrogen Reactor to Produce Hydrogen Gas as a New Source of Energy from Textile Effluent Rusdianasari; Isdaryanto Iskandar; Prita Dewi Basuki
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 2 No. 3 (2022): IJRVOCAS - December
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v2i3.149

Textile wastewater can disrupt the environmental equilibrium. One type of textile waste processing is the production of hydrogen gas as a new and sustainable energy source. The water electrolysis method may be used to convert textile waste into hydrogen gas. In this study, hydrogen gas was produced from textile waste in two stages: electroplating waste treatment with an electrocoagulator and then processing textile waste into hydrogen gas using an oxyhydrogen reactor. Various catalysts, including NaOH, KOH, NaCl, and NaHCO3, were used in the process of converting textile waste into hydrogen gas, with a concentration of 0.5 M and an electrolysis period of 5 minutes. The addition of a catalyst is intended to identify the optimal concentration in the conversion of textile waste to hydrogen gas. The optimal KOH catalyst concentration for obtaining hydrogen gas was determined through study and analysis.

Co-Authors Abu Hasan Bambang Irawan Carlos R. S. Daya Wulandari Dicky Septrianto Fatahul Arifin Fatahul Arifin Febby Fitria Sari Isdaryanto Iskandar Julismi Muhammad Yerizam Muhammad Zaman Mustafa Kamal Nabila Putri Nasyta Prita Dewi Basuki RD. Kusumanto Rizka Amalia RM. Fauzi Syakdani, Adi Tresna Dewi Yurika Islamiati Yusuf Dewantoro Herlambang

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