The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Hydrogen has many attractive intrinsic properties that can be used for improving engine efficiency and emission performance. In this paper, the presence and long term stability of hydrogen nanobubbles (HNBs) in gasoline fuel were investigated. A HNB–gasoline blend is fabricated by nanobubble generator which consists of gas–liquid dispersion system. After the generation of HNBs in gasoline, the presence...
The use of ethanol as fuel has encouraged many countries to improve their production processes. However, costs related to its current production model have been occasionally mentioned as a disadvantage to the use of this biofuel. One of the main costs is the energy expenditure for an effective distillation of the fermented ethanol wort, to result a final product called hydrous ethanol (about 95% by...
In deep coal seams carbon dioxide (CO2) exists in its super-critical state, which emphasizes the importance of studying super-critical CO2 flow behaviour in coal, especially for field applications, such as CO2 sequestration and enhanced coal bed methane recovery. Although there has been some research on the subject, the studies have been conducted on only certain types of coal (e.g., naturally fractured...
The purpose of this work is to discuss some relevant issues that affect the catalytic performance of renewable-based CaCO3/CaO solids in the transesterification of triglycerides for producing biodiesel. Particularly, this study analyses the catalytic performance of the renewable catalysts obtained from calcined eggshells focusing on the calcination step, handling of the activated catalysts, and on...
This study was conducted to research on the size distribution and concentration measurements of slurry droplet by DHM (digital holographic microscopy). The slurry from desulfurization tower was atomized into micron droplets. The ability of DHM to detect micron droplets was studied by simulation. Micro-holographic measurement system of spray field was built, with equivalent CCD (charge-coupled device)...
Mercury (Hg) in municipal solid waste incineration fly ash attracts much attention for its potential risk in environment and human health. In this work, Hg in fly ashes collected from 15 cities over China was surveyed in terms of speciation, leaching behavior and health risk assessment. In general, total Hg (HgT) concentration was 1–24mgkg−1, where fly ash in esten cities had higher HgT concentration...
For the first time we present an ultra-low casting of Pt based nano-ink on carbon paste electrodes (CPEs) for electrooxidation of glycerol and ethylene glycol fuels in alkaline medium. The platinum loaded carbon nanotube (Pt-CNT) synthesized by a microwave induced reaction has been extensively characterized by microscopic, spectroscopic and thermal gravimetric techniques. Pt-CNT has shown 6 and 33...
To promote the use of abundant low rank coal resources, and to assist with the design, development and optimisation of hot gas cleaning and downstream processes, it is necessary to understand the release mechanisms of volatile inorganic species from low rank coals under high temperature gasification conditions. Although a significant amount of work has been reported under combustion and oxygen lean...
Oxyfuel combustion is a promising technology in terms of CO2 and NOX emissions control. Furthermore, CO2-rich atmospheric condition in a furnace leads to in-furnace desulphurisation. The high sulphur content in Jordanian oil shale is considered one of the biggest challenges for its utilisation. Direct sorbent injection studies for desulphurisation in O2/CO2 pulverised coal combustion were very limited...
The objective of this paper is to numerically study the flow in heavy oil reservoir with water drive. The main focus is to investigate the viscous fingering phenomenon and how it affects the oil recovery. Two-dimensional simulations of oil production in a homogeneous heavy oil reservoir were carried out using ANSYS Fluent as the Computational Fluid Dynamics software. Cross section of the reservoir...
The effects of molecular structure and feedstock of biodiesel on its compatibility with an elastomer were investigated in this study. Nine fuels were tested to evaluate their compatibility with nitrile butandiene rubber (NBR). The tested fuels include diesel fuel, waste cooking oil methyl ester, palm oil methyl ester, soybean oil methyl ester, methyl laurate (C12:0), methyl palmitate (C16:0), methyl...
An extended overview of the advantages and disadvantages of biomass composition and properties for biofuel application was conducted based on reference peer-reviewed data plus own investigations. Initially, some general considerations and comparisons about composition and properties of biomass and coal as the most popular solid fuel are addressed. Then, some of the major advantages related to the...
The aim of this paper was to determine the capability for metal elution that may constitute potential contamination to the water environment from post-process cavern residue after underground coal gasification (UCG).Samples of raw coals that had been subjected to gasification (three samples of hard coal, the coal mine “Bobrek”, the experimental mine “Barbara” and the coal mine “Piast”, and a sample...
The purpose of this experimental study is to evaluate the efficiency and performance of cyclic CO2 injection on recovery of heavy oil from a matrix-fracture system and to study the feasibility of carbon storage in a fractured medium. In this study; different laboratory experiments on one of the Iranian heavy oil and brine reservoir samples were performed. The Minimum Miscibility Pressure (MMP) between...
The evaluation of methanol as an alternative fuel requires, among other things, information and the systematic investigation of explosion parameters of methanol in air in various conditions. An experimental study of the explosive combustion of methanol–air mixtures at various initial conditions (temperatures, pressures and fuel/air ratios within the explosion limits) was performed in a closed vessel...
This study investigates the ethanol production characteristics of adapted Pichia stipitis yeast in growth media containing various sugar sources, namely, synthetic xylose, sulfuric acid hydrolyzed sugar beet pulp and sugar beet pulp hydrolysate–synthetic xylose mixture. In synthetic growth media, the xylose concentration range of 10–75gl−1 did not exhibit substrate inhibition and at an initial xylose...
A microwave hydrothermal (MWH) method was used to deposit WO3 onto ZrO2–Al2O3 with various ZrO2 contents to prepare hydrodesulfurization (HDS) catalysts with high WO3 loading (23 wt%) close to industrial hydrotreating, for achieving high W dispersion and weak W-support interaction. The catalysts with the same WO3 and ZrO2 contents were prepared by a conventional impregnation (IM) method as reference...
A continuously increasing demand for energy from biomass encourages utilisation of new biomass fuels which usually cause ash related problems in conventional wood combustion systems. One approach to make these biomass fuels applicable in such systems is to prepare blends with other fuels such as peat, which positively influence the behaviour of ash-forming elements. Usually the application of fuel...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.