bluuebunny/crossref_metadata_2025_split huggingface dataset:
Application of Electrolysis Water Hydrogen Production in the Field of Renewable Energy Power Generation
Authors: Zhan Tingjun , Bie Rushan , Shen Qianhao , Lin Li , Wu Ao , Dong Peng 
Published: November 2020

Abstract
The gradual depletion and burning of fossil fuels have brought huge pollution to the global ecological environment. Environmental governance and energy crisis have become double challenges faced by governments of many countries in the world. This paper explores the application of electrolysis water hydrogen production technology in the field of renewable energy power generation, in order to better promote the application and development of high temperature solid oxide electrolysis (TSOE) technology in the field of power generation. By investigating the changes in my country’s hydrogen energy production and demand, this paper concludes that the average annual growth rate of my country’s hydrogen production has continued to increase in recent years, and my country’s hydrogen demand reached 19.8 million tons in 2018. It is estimated that by 2030, my country’s hydrogen demand will reach 35 million tons, with a compound annual growth rate of 5.76%. Finally, when selecting large-scale hydrogen production technology from the high-TSOE hydrogen production technology in the field of power generation, the key problems to be solved and the renewable energy storage aspect are prospected for the application prospect of the electrolysis water hydrogen production technology in the field of power generation.
Economic evaluation of thermochemical conversion for rice straw-based second-generation bioethanol production in West Java
Authors: Harahap A F P , Ramadhan M Y A , Sahlan M , Hermansyah H , Roslan A M , Gozan M 
Published: November 2020

Abstract
Production of bioethanol through several routes from cheap materials such as agricultural solid waste is getting more interesting nowadays. Rice straw is one of the potential agricultural solid wastes that can be used as feedstock for bioethanol production due to a huge amount of availability, especially in South East Asia countries. In this study, the economics of rice straw-based bioethanol plant by thermochemical conversion was evaluated. The main processes involved in the plant are pretreatment, gasification, water-gas shift reaction, carbon dioxide removal, alcohol synthesis, and purification. The plant was planned to be located in Indramayu, West Java, Indonesia. The price of bioethanol set on this evaluation is US$ 0.61 per liter. The total capital expenditure (CAPEX) and operational expenditure (OPEX) of this plant were found to be US$ 122,614,000 and US$ 20,175,910, respectively. The return on investment (ROI) is 66.96%. The internal rate of return (IRR) is 24.08%. The net present value (NPV) is US$ 689,074,000. Finally, the payback period is 4.5 years. The result of this study shows that this bioethanol plant is feasible and very profitable to be implemented.
Energy needs in dynamic braking on Dahlander motor
Authors: Saputro S A , Asmar  , Sunanda W 
Published: November 2020

Abstract
Dahlander motors are using with different speed regulation needs. In this article, dynamic braking is using by injecting a DC voltage to see energy usage at fast and slow rotation. Control of the fast and slow rotation at the control panel using Arduino. The DC voltage variations given are 15 volts, 20 volts, and 24 volts. At a 15 volt DC voltage injection, the energy needed at fast rotation is 0.0018 Wh and at slow rotation 0.00072 Wh. For injection of a 20 volt DC voltage, the energy required for fast rotation at 0.0025 Wh and at 0.00085 Wh for slow rotation. Whereas 24 volt DC voltage injection, the energy needed at 0.0036 Wh for fast rotation and 0.00077 Wh for slow rotation.
Experimental study of helical savonius rotor profiles with different number of blade
Authors: Wijianti E S , Saparin  , Setiawan Y 
Published: November 2020

Abstract
This research is about the savonius wind turbine which was made in the form of a prototype as a simple student learning media. The goal is the students understand the process of converting wind energy into mechanical energy. The turbine model used is helical savonius rotor with U, S, and L profile on three blades and four blades. Tests carried out using wind tunnels. The test results show that helical savonius rotor with three blades provides better performance than four blades. The best turbine power is obtained in the L profile with three blades which is equal to 1, 62 watts. While the best power coefficient is obtained from the S profile with 3 blades with a power coefficient value of 0.122.
Solar power plant utilization on mass rapid transit based public transportation company
Authors: Ramdhani I , Sudiarto B 
Published: November 2020

Abstract
Nowadays, the growth of population and business activities in a city is creating a new problem, which is the movement of the people itself. Mass Rapid Transit (MRT), which included in public transportation with a dedicated lane continues to prove that this kind of public transportation is effective and efficient to solve that problem by reducing congestion and creating a greener environment. However, MRT requires electrical power in a relatively big number. To meet this requirement and support a greener environment, a study is conducted. The method of this study is to simulate on how much potentially a solar power plant can be built on Jakarta MRT facility and conduct an analysis on engineering, economic, regulation, and strategic of the Company itself. The result is a 451.2 kWp Solar Power Plant could be built on the Workshop Building on Jakarta MRT, has NPV of US$ 44,706.70, and payback period in 12.82 years if the implementation in year 2022. The Cost of Capacity Charge could be avoided by giving the Power Utility Company of Indonesia a Business to Business (B2B) scheme.
Performance analysis of a hybrid natural gas generator/photovoltaic system for residential use
Authors: Budiyanto A , Kamil M I , Aryani D R , Jufri F H , Ardita I M 
Published: November 2020

Abstract
Diesel generator sets are mostly used as the main electricity supply or as a backup for areas not connected to the main electricity grid. Natural gas can be used as an alternative fuel of generator set to replace diesel because of its abundant availability and is environmentally friendly. In addition to the generator set, the solar photovoltaic (PV) system is also suitable for implementation in remote areas since its primary energy sources are easy to obtain. The combination of these two types of power generation is expected to be reliable enough to supply the electricity for houses in remote areas. This study is conducted to observe the performance of the hybrid natural gas generator set/solar PV system in terms of specific fuel consumption (SFC) and power quality through a testbed, and further analyze the economic aspect. According to the result, the voltage and frequency generated by the natural gas generator set either integrated with a solar PV system or not is still within the allowable operating limits. Moreover, the SFC value of the hybrid system is higher than the one with natural gas generator set only.
Application of behind the meter battery storage system integrated with net metering in Indonesia
Authors: Feisal A , Sudiarto B , Setiabudy R 
Published: November 2020

Abstract
Indonesia’s energy supply system is experiencing a transition towards more sustainable energy generation with an increased amount of Rooftop Solar photovoltaic (PV). However, the daily variability of the solar resource, in addition to intermittent arising from moving cloud cover becomes shading. To enable Net zero energy home and optimize power management for future homes, Behind The Meter (BTM) battery storage as one solution to solve intermittent energy production, so as an improvement the energy saves. The objective of this paper is to analyze the financial metric of rooftop solar PV and Behind The Meter (BTM) battery storage in the rural sector so that the decision to integrate the rooftop solar PV and BTM battery storage can be solution for Net-zero energy home. Solar PV and BTM battery storage framework was designed to supply continuous and uninterrupted power to a typical house in Indonesia. Step by step method for financial simulation and implementation of the rooftop solar PV and BTM battery storage framework was done. System Advisor Model (SAM) is used for economic investigation. The economics of solar PV and BTM battery storage get LCOE real was $ 10.26 cents/kWh and total reduction CO2 around 7116 kg.
The effect of porous round on waves produced on the wave simulation tool, laboratory scale
Authors: Wibowo B S , Setiawan Y , Andini D E , Akhrianti I 
Published: November 2020

Abstract
Bangka Island is one of the islands that has beautiful beach tourism destinations but also has the largest tin reserves in the offshore area. This causes a very significant difference and can be a gift or a curse. Waste from the results of offshore tin mining activities carried out by production suction vessels (KIP) in the form of mud and changes in seawater quality. Then the sludge produced by mining causes waste/mud to be carried by the waves of the sea and settles along the shore and imposes silting and causes seawater on the shore to become turbid. One way to determine the effect of waves on the deposition of mud, among others, with a wave simulation tool. The study aims to determine the length and height of the waves produced on a laboratory scale Floating Breakwater Simulation. From the results of the study it can be concluded that the shaft rotation speed affects the waves produced, the higher the shaft rotation the higher the resulting waves. The frequency of the simulation tool also increases while the wave period decreases as the rotation of the shaft rotates, which means that the resulting wave appears more frequently and with a high propagation speed at the highest rotation of the shaft.
Solar home & pumping system scheme for lighting & access to clean water in the 3T region
Authors: Nafik M A , Sudiarto B , Setiabudy R 
Published: November 2020

Abstract
There are many regions in Indonesia where the electrification ratio is relatively low, even some still do not enjoy access to electricity. Low electrification is especially felt by Indonesians living in 3T areas (terdepan/frontier, terluar/outermost, and tertinggal/disadvantaged). On the other side, as archipelagic and tropical country, Indonesia has high potential in the development of renewable energy for electrical generation especially solar energy. This study aims to design a solar home & pumping system (SHPS) model and assess its feasibility. In this concept SHPS scheme is purposed to provide electricity access to 3T community for the needs of lighting and access to clean water. A total of 4 units of 3 watt LED lights integrated with batteries are used for lighting each household, while a 600 watt water pump can be used communally for 150 households. Both LED light and water pump are supplied with electrical energy from their respective solar panels. There are 3 scenarios in the implementation of SHPS for a total of 150 households with a discount rate for investments of 10%. Full grant by the government/private sector with a budget of Rp 480.5 million is the most recommended scenario. Another advantage of SHPS is environmentally friendly.
Comparative efficiency solar panels and wind turbine DC generator as green energy sources in Bangka Island
Authors: Yandi W , Puriza M Y , Jumnahdi M , Kurniawan R 
Published: November 2020

AbstractRenewable energy power generation is a concept of generating electrical energy that is widely applied today. The rapid population growth is proportional to the high demand for electrical energy. There are still a lot of power plants that rely on fossil fuels as a source of energy to drive the turbines. The limitations of fossil energy provide an alternative thought for using renewable energy as electricity generation. Bangka Island is an island with great potential for solar and wind energy. The two energy sources are expected to provide a solution to the scarcity of energy that occurs on the island of Bangka. This research is expected to provide input in solving the problem of the high demand for electrical energy on the island of Bangka and provide an idea that renewable energy is a substitute for limited fossil energy. From each renewable energy generator, research is carried out to obtain the electrical energy produced. The electrical energy data generated by the two power plants will be compared in order to obtain effectiveness and efficiency values. The research was conducted in Bangka district using 50 Wp solar panels and 30 Watt DC generators.
Bio-packaging based on a composite of paper waste and coconut fiber
Authors: Noor A , Afriani F , Puriza M Y , Tiandho Y 
Published: November 2020

Abstract
Indonesia is the largest contributor to marine plastic waste in the world after China. One solution to reduce plastic use is to develop a packaging that can be degraded by nature and eco-friendly, called bio-packaging. In this paper, we create bio-packaging made from a composite of waste paper and coconut fiber. In addition to composites’ physical characteristics such as mechanical properties and its biodegradability, this research also measured community responses to the bio-packaging products. This bio-plastic can be applied to making packaging with a lifting strength of more than 10 N. Also, it can be degraded into freshwater and seawater. According to the perceptional test, the bio-packaging is superior to single-use plastic except in the strength aspects.
The impact of tin mining in the Pompong watershed on vegetation sustainability to maintain environmental quality
Authors: Yofianti D , Pertiwi P C , Hisyam E S 
Published: November 2020

Abstract
Over the past 10 years, the POMPONG watershed has experienced a drastic change in land use, from agricultural to gradually becoming residential and mining area. Mining activities carried out in the Pompong watershed result in changes the characteristics of the watershed and the presence of vegetation that functions as land cover. Therefore, this study aims to investigate the extent of the impact caused by tin mining activities on the survival of vegetation to maintain environmental quality. The data of vegetation type was obtained through field observation. Besides, several maps of the Pompong watersheds, such as.watersheds and river networks, land use, soil types, land slopes, contour, topographic and administrative boundaries were needed. These maps were obtained from several related agencies. Data processing and analysis used ArcGis 10.1. The observation results showed there are four types of vegetation, namely secondary-dryland-forest, dryland-agriculture, dryland-agriculture-mixed-with-shrubs, then bush-and-shrub. The research results indicated there was a change in the function of the land from dryland-agriculture-mixed-with-bush to mining by 0,327%. The existence of these vegetations affect the ability of surface water absorption. Therefore, it is better to use vegetative methods in managing the conservation of land around the Pompong watersheds.
Sensitivity analysis of arc-hydro on the watershed responses in urban and rural area
Authors: Giardini P , Sutjiningsih D , Anggraheni E , Murniningsih S 
Published: November 2020

Abstract
Program for predicting runoff discharge from rain events is HEC-HMS. The results of the HEC-HMS hydrograph depends on the characteristics of the watershed. Arc-Hydro/HEC-Geo HMS are programs that are usually used in hydrological modelling. The results of the Arc-Hydro analysis depends on the sensitivity of the topographic map. Due to complex surface shapes because the effect of high-level urbanization in urban areas, it will cause error in extracting the pattern of the natural network path due to roads and buildings. This will complicate the Arc-Hydro program in determining watershed boundaries. The objective of this research is to analyse the sensitivity of Arc-Hydro to make watershed delineation and their influence on the watershed responses using HEC Geo-HMS. Based on the result of this study, the resulting catchment area of the Arc-Hydro delineation with manual (based on the field survey) delineation has a significant difference in urban area compared to rural area. These results also have a significant impact on the results of hydrograph simulations of flood runoff in urban areas. So it was concluded that the determination of watershed boundaries in urban areas does not only rely on the Arc-Hydro but also needs to be validated based on the field survey.
Synthesis and characterization of Fe3O4/SiO2 Nanocomposite from Kaolin Bangka Island
Authors: Asriza R O , Indriawati A , Julianti E , Fabiani V A 
Published: November 2020

Abstract
Magnetite is widely used in various fields of separation and adsorbent. Various studies have also reported that magnetite without modification have low thermal stability, low water solubility and may undergo reactions forming a FeOOH intermediate phase. The use of silica templates is done in such a way that the magnetite produced is not easily agglomerated. The source of silica can easily be found in nature, one of which is kaolin. Synthesis of Fe3O4/SiO2 nanocomposites from Kaolin Bangka Island was carried out. The source of silica used is sodium silicate which is made from kaolin. The parameter observed in this study is the effect of silica concentration on the formation of Fe3O4/SiO2 nanocomposites. The SiO2 concentrations used were 5%, 15% and 30%. Based on the XRD analysis results, it appears that the three samples have typical diffraction peaks from Fe3O4/SiO2 nanocomposites at 2θ 24°, 26° and 35°. The average particle size of each composite for 5%, 15% and 30% SiO2 concentrations is 50.05 nm, 43.21 nm and 41.68 nm. It can be concluded that nanocomposite with SiO2 concentration of 30% has the potential to be applied further as a heavy metal adsorbent. FTIR analysis showed an absorption peak indicating the silica has coated the magnetite material from Fe3O4.
Selection of red rice (Oryza sativa L.) resistant blast disease
Authors: Mustikarini E D , Lestari T , Prayoga G I , Santi R , Dewi S 
Published: November 2020

Abstract
Rice crop is one of the major food commodities in Indonesian. However, rice production can decrease due to the blast attack caused by the fungus Pyricularia oryzae. Efforts to reduce blast disease can be done by cultivating local red rice. Red rice has high nutritional and antioxidant content and has resistance to blast disease. The aim of research was to determine the level of endurance of 10 lines red rice against blast disease attack and to obtain which rice line resistant to blast disease. The research was conducted from January to March 2020 in the greenhouse of Muara experiment station of Indonesian Center for Rice Research, Bogor, West Java. The research used Factorial Randomized Block Design (FRBD) with two factors. The first factor was 10 lines of red rice, 4 elders and 2 control varieties. Second factor are 4 race blasts (033,073,133 dan 173). The selection method is adjusted to the standard of Interational Rice Blast Nursery (IRBN). The results showed 10 red rice lines were resistant to race blast 033, 9 red rice lines were resistant to race 073, and 7 red rice lines resistant to race (133 and 173). The red rice line; 19i-06-09-23-27, 19i-06-09-23-3, 19i-06-30-17-17 have the highest resistance. The resistance level of these three line was not differed significantly with Situ Patenggang variety (resistant control) and Inpago 8 variety which were the highest resistance to blast disease.
Green synthesis and characterization of Zinc Ferrite (ZnFe2O4) nanocomposite via Tristaniopsis merguensis Griff. natural extract
Authors: Fabiani V A , Aldila H , Anggraeni  , Nur’aini  
Published: November 2020

Abstract
Green synthesis and characterization of zinc ferrite (ZnFe2O4) nanocomposite via Tristaniopsis merguensis natural extract was performed. The precursors used in this analysis were Zn(NO3)2.6H2O and Fe(NO3)3.9H2O, it was known that the extracts of Tristaniopsis merguensis leaves had high total phenolic content. Synthesis is carried out by comparing the temperature without annealed and annealed at 700 °C. The presence of phenolic compounds in the extract of Tristaniopsis merguensis functions as a bioreductor agent and chelating agent in the formation of zinc ferrite material. The XRD analysis showed the diffraction peaks typical of ZnFe2O4 at 29.98°, 35.85°, 42.75°, 56.51° and 62.09° at 700 °C annealed, indicating that the ZnFe2O4 structure had a face center cubic structure with miller index (220), (311), (400), (400) and (400). The average particle size of ZnFe2O4 is 9.0414 nm based on Scherrer’s calculations. FTIR analysis shows the presence of phenolic compounds in Tristaniopsis merguensis leaves extracts interacting with Zn2+ and Fe3+ ions producing sharp absorption at wave number 543.80 cm−1 corresponding to the vibrational mode of the metal oxygen bond (Zn-O-Fe).
Application of electrocoagulation for textile wastewater treatment: A review
Authors: Sandi  , Afriani F , Tiandho Y 
Published: November 2020

Abstract
The increasing development of the textile industry is always followed by the amount of wastewater produced. The textile industry uses various types of synthetic dyes, and the amount of dyes is still high in its waste. The impact of the discharge of textile wastewater into the environment without rigorous treatment will damage the environment because the dense color of the waste can prevent light penetration for aquatic organisms. Also, various metals and other harmful chemicals can contaminate soil and water sources. One promising method for treating textile wastewater is electrocoagulation. Electrocoagulation can reduce pollutants in textile wastewater efficiently, cheaply, and reliably. In this review article, an explanation regarding the basis and techniques for processing textile wastewater by electrocoagulation will be presented. Various electrocoagulation operational parameters and their relation to the quality of textile wastewater treatment will be reviewed. In addition, problems and limitations of the application of electrocoagulation as a basis for the development of textile waste treatment in the future will be explained.
Inversion of rayleigh waves dispersion using quantum-behaved PSO to characterize the embankment of mud flow Dam in Sidoarjo (LUSI)
Authors: Widyaningrum Y , Sungkono  , Husein A 
Published: November 2020

Abstract
The characterization of the embankment can be done by constructing the shear wave velocity in subsurface. The investigation of near surface wave velocity using Rayleigh wave dispersion analysis is popular. This method is very fast and effective to construct the vertical wave velocity, but has no unique solution. As a result, the inverse modelling is often trapped in local optimums. Therefore, we used Quantum-behaved PSO to get the best solution (global optimum). Inversion method using Quantum-behaved PSO was performed on synthetic and field measurement data. Field data acquisition was executed at P80-81 using both active and passive surface waves methods. The inversion result of Rayleigh wave dispersion is shear wave velocity structure. Shear wave velocity imaging resulted by this method was used to characterize the embankment of mud flow dam in Sidoarjo (LUSI) and be compared to the resistivity measurement data. The subsurface structure which is constructed from the inversion of Rayleigh wave gives the same result as the resistivity.