As developing countries, Indonesia had their municipal solid waste (MSW) production increase due to population growth and its reached 190,000 metric ton/day in 2014. Selection of appropriate technology is necessary reduce the volume primarily utilize as energy source because calorific value inside. Three thermal based technologies are available for (WtE) which incineration, conventional air gasification, plasma gasification. Their feasibility was evaluated environmentally economically. None...

Sustainable iron production is largely driven by the urgency to reduce extensive energy consumption and emissions in iron/steel sectors. Low-temperature electroreduction of oxide technology thus revived since it directly utilizes (green) electrical with a competitive compared thermochemical reduction approach. In present work, we perform theoretical experimental studies for comparison aqueous alkaline acidic electrolytes. Electrochemical deposition behavior are experimentally investigated...

Low-temperature electrochemical reduction (electroreduction) of iron oxides is a promising alternative to the conventional methods for production due its CO2-free operation and relatively low energy consumption. In this work, we demonstrate novel approach by promoting formation dendritic structures during electrodeposition, which facilitates easy harvesting deposits in powder form. Experiments were conducted using single pair parallel plate electrodes, immersed mixture hematite (Fe2O3)...

The airlift pump system includes the both air and liquid inlet sections, vertical pipe as transporting medium. low performance of concurrent systems has promoted efforts to further improve in implementation these devices various conditions real sediment transport on sea lakebeds. In present experimental study, we have modified conventional by equipped our developed micro-bubble generators system. Here three-phase flow behavior during solid particle lifting generator type transient is...

A unique device, namely as the microbubble generator is a device which able to maintain more dissolved oxygen inside water for various purposes including waste treatment and aquaculture with less energy consumption. One of that types venturi-porous pipe generator. It has advantages simple construction easy maintain. The purpose present study was investigate performance developed type inlet angle 20°, outlet 12°, inlet-throat diameter ratio (Din/Dt) 2.5. experiments were conducted under an...

Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation Hadiyan Yusuf Kuntoro, Akhmad Zidni Hudaya, Okto Dinaryanto, Akmal Irfan Majid, Deendarlianto; An improved algorithm of image processing technique for film thickness measurement in a horizontal stratified gas-liquid two-phase flow. AIP Conf. Proc. 3 June 2016; 1737 (1): 040010. https://doi.org/10.1063/1.4949298...

Slug flow is a part of intermittent which avoided in industrial application because its irregularity and high pressure fluctuation. Those characteristics cause some problems such as internal corrosion the damage pipeline construction. In order to understand slug characteristics, measurement techniques can be applied wire-mesh sensors, CECM, speed camera. The present study was aimed determine by using image processing techniques. Experiment has been carried out 26 mm i.d. acrylic horizontal...

The increasing use of fossil fuels causes the depletion in supply and contributes to climate change by GHG emissions into atmosphere. Microalgae indicate as renewable sustainable energy sources they have a high potential for producing large amounts biomass third-generation biofuels (bioethanol biodiesel) feedstock. However, there are several parameters which should be considered microalgae cultivation, such environmental conditions, medium composition species. aim this research was study...

Based on its characteristics, biodiesel has a higher density, viscosity, and acidity level than diesel fuel, so it disadvantages in terms of lubricants especially the long run. The impact, can decrease kinematic viscosity lubricant, total base number, impact by decreased engine performance. This research aims to determine characteristics from use (B20 B100) related Total Base Number (TBN). testing method were used ASTM D2896-15 D445-06 standard. study two units Kubota RD 65 DI-NB engines...

Penggunaan bahan bakar alternatif selalu berkaitan dengan dua masalah global, yaitu meningkatnya penggunaan minyak mentah dan cadangan yang semakin menurun. Disamping itu, sumber energi menjadi topik menarik untuk terus dikaji. Indonesia adalah salah satu negara penghasil kelapa sawit terbesar di dunia nilai produksi mencapai 51,8 juta ton pada tahun 2019. Salah dapat diolah dari biodiesel. Biodiesel digunakan secara langsung sebagai mesin diesel. Tetapi biodiesel memiliki karakteristik...

In relation to pollution control and environmental friendliness, the quality of exhaust gas from diesel engine needs be considered. The influences injection pressure timing opacity were investigated. A series experiments conducted in a one-cylinder conventional with naturally aspirated system indirect injection. default specification was 120 kg/cm2. To investigate pressure, speed retained on 1000 rpm variations 80 215 On other hand, various (8, 10, 12, 16 degrees before TDC point exact 18...

A new design of automotive refrigeration system for a passenger car was proposed. To ensure less energy consumption and optimal thermal comfort, the performance were evaluated. This current research aimed to evaluate characteristics several types cooling load. In this present study, four-passenger wagon with 1500 cc gasoline engine that equipped by belt driven compressor (BDC) used as tested vehicle. represent tropical condition, set lamps wind sources are installed around The blower...

The use of microbubble has grown massively in many fields such as petrochemical industry and waste water treatment. This phenomenon offers some advantages since the ability to provide larger liquid-gas surface contact area. In order achieve depth understanding related those phenomena, measurement methods can be applied a capillary suction probe, conductivity probes, and, Phase Doppler Anemometry. present work was conducted determine characteristic size distribution by using digital image...

Abstract The present study investigated the effects of fuel injection pressure to consumption and exhaust gas emissions for Spark Ignition (SI) engine. A series experiments were carried out in 4-cylinders gasoline engine with capacity 1500 cc. default was 2.8 kg/cm 2 . In this study, pressures varied from 1.4 4.2 speeds retained on 800, 2000, 3000 rpm. Fuel evaluated by using a burette under static condition analyser used measure emission. As result, affects significantly lowest (CO HC)...

Renewable energy is an source that naturally inexhaustible and continuously replenished. One of renewable sources geothermal energy. As a country located in the ring fire, Indonesia has abundant potential 29 GW, which accounts up to 40% world's potential. Geothermal can help reach national target 23% mix from by 2025. However, utilization still limited, with only 2130.7 MW installed electric capacity as 2021. Furthermore, hydrogen new future main source. Hydrogen be produced via electrolysis...

Natural gas is a very reactive fuel that easily causes detonation wave, especially when the oxidizer enriched with oxygen or pure oxygen. If combustion wave not controlled, can occur, which dangerous for safety of workers and industrial facilities. This study was conducted to develop prototype arrester control waves by using test tube total length 3000 mm. The characteristics were evaluated in present pressure sensor, an ion probe soot track record plate. Results showed propagation velocity...

This study was aimed at evaluating the performance of non-aerated and aerated double chamber microbial fuel cells from food waste leachate. The value open circuit voltage (OCV) close (CCV) were taken to analyze power density current both configurations. Two (MFC) with different configurations developed produce electricity leachate studied for 30 days. Anode catode made by uncoated carbon felt graphite rod. Food water incubated inside a reactor. After days, production characteristics between...

The use of commonly used vapor compression cycle cold storage in fishing vessel is facing limitations to be widely applied Indonesian fishermen since it consumes more energy and requires large space. Thermoelectric refrigerator believed a promising option due its simple design low requirement. However, the Coefficient Performance (CoP) system current development relatively low. Although many researches have been conducted increase CoP But there still lack studies focused on effects important...

The purpose of this experimental research is to comprehensively investigate the phenomena successive droplets impacting aluminum hot surface. It understood that each region produces different behavior. Therefore, in-depth investigation necessarily needed. This will be useful support development metal industry, especially in spray cooling area. In present work, Aluminum used as material. surface temperature ranged from 110°C - 240°C, where regime onset boiling occurs. droplet diameter was 2.8...

Penggunaan bahan bakar alternatif selalu berkaitan dengan dua masalah global, yaitu meningkatnya penggunaan minyak mentah dan cadangan yang semakin menurun. Disamping itu, sumber energi menjadi topik menarik untuk terus dikaji. Indonesia adalah salah satu negara penghasil kelapa sawit terbesar di dunia nilai produksi mencapai 51,8 juta ton pada tahun 2019. Salah dapat diolah dari biodiesel. Biodiesel digunakan secara langsung sebagai mesin diesel. Tetapi biodiesel memiliki karakteristik...