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744 articles for “Densities”
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Formation, Analysis and Characterization of Wood Pyrolysed Oil
Abstract: Pyrolysis of wood is the possible path for converting biomass to higher valuable products such as bio-oil, bio-char and bio-gas. Bio-oil or liquid bio-fuels have higher heating values, so it can store and transport more conveniently the by-products bio-char and bio-gas, which can be used to provide heat required in the process. This work is focused on the formation, analysis and characterization of bio-oil which was obtained from the mixed …
Published in Emerging Trends in Chemical Engineering · Vol. 3, Issue 2, 2016 · pp. 36–41 Read article
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Theoretical Study of Substituent Effects on Electronic Properties and Polarizability for (2, 5, 24, 27-Tetrahalogen Pentacene) Molecule
Abstract: DFT and semi empirical methods have been carried out studying (2, 5, 24, 27 tetrahalogen pentacen) molecules using the B3LYP functional and the 6-311G (d, p) basis set and AM1 model. Total energy, electronic properties such as; ionization potential, electron affinity, energy gap, dipole moment, polarizability and electronic potential. The calculated ionization potential (6.126 eV) and electron affinity (1.417 eV) of this molecule is in a good agreement with experimental …
Published in Emerging Trends in Chemical Engineering · Vol. 3, Issue 1, 2016 · pp. 1–8 Read article
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Spin-Orbit Coupling, Spin-Spin, and Electric Properties of Hydrogen Fluoride Molecule (HF), Hydrogen Chloride Molecule (HCL) and Hydrogen Bromide Molecule
Abstract: Reviews of the study of the spin-orbit coupling, spin-spin, electronic structure and number electric properties has been carried out such as ionization potential (IP), electron affinity (EA), electronegativity (x), hardness( ), softness (S), and electrophilic (W) of hydrogen fluoride, hydrogen chloride (HCl) and hydrogen bromide (HBr) molecules by using Gaussian program 09 and Gauss view 5.08 program using density function (DFT) method B3LYP/6-311G (d,p). It was found that the values …
Published in Emerging Trends in Chemical Engineering · Vol. 2, Issue 3, 2015 · pp. 1–3 Read article
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Large Eddy Simulation: An Approach to Simulate Non-Premixed and Partially Premixed Natural Gas Combustor
Abstract: This paper highlights on the large eddy simulation approach for non-premixed and partially premixed combustor. In the case of large eddy simulation, mainly two scalars are taken into consideration that is mixture fraction and the other one is the progress variable mixture fraction, which tracks the mixing of fuel and the oxidizer, and a progress variable which tracks the global extent of reaction of the local mixture. In the case …
Published in Emerging Trends in Chemical Engineering · Vol. 2, Issue 1, 2015 · pp. 35–42 Read article
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Rice Husk Energy Content Enhancement by the Torrefaction Process: Characterization and Statistical Studies
Abstract: Torrefaction is the partial pyrolysis of biomass at atmospheric pressure, in an inert environment. The objective of this study is to torrefy the rice husk of Ethiopian origin in order to enhance its energy density. The optimum torrefaction temperature, holding time, and acid concentration were investigated in this study by the three-level-three-factor Box-Behnken Design (BBD) using the Design-Expert 7.0.0 software.
Published in Emerging Trends in Chemical Engineering · Vol. 7, Issue 1, 2020 · pp. 1–4 Read article
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Model to Predict a Ratio Control of Hydrocarbon Acid and Water in a Packed Bed Reactor
Abstract: Model development was carried out to examine the ratio of hydrochloric acid gas and water in a packed bed reactor. The research predicted increase in output with increase in time, revealing the effectiveness ratio control of hydrochloric acid separation from water using absorption column mechanism. The density of the products played an active role in the separation process as well as in control action function. The developed model can be …
Published in Emerging Trends in Chemical Engineering · Vol. 8, Issue 1, 2021 · pp. 45–52 Read article
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Developments of Fiber-reinforced Plastics
Abstract: This article is a description of fiber-reinforced plastic to subject composite, where individual constitutions have been reinforced to develop better properties than individual materials. Fiber-reinforced composite materials are alternatives over solitary metals or alloys in terms of strength, stiffness, density, and low cost with improved sustenance. Differential behavior from composited formation has functionally upgraded after usage from the equivalent differential proportion of filler added. Or add-in addendum has been implicated …
Published in Emerging Trends in Chemical Engineering · Vol. 8, Issue 2, 2021 · pp. 1–9 Read article
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Production of Polymer Composite using Thermoplastics, Sharp Sand and Sawdust: Mix Techniques
Abstract: This research work focuses on producing a polymer composite using a thermoplastic. PET is nonbiodegradable and contribute majorly to water and land pollution in this research work an attempt has been made to utilize PET waste plastic in manufacturing fibre-reinforced polymer composite by combining sawdust which is another waste product from woodwork operations and sand, a major component in construction, whose use is greatly threatening the ecosystem. The fibre-reinforced polymers …
Published in Emerging Trends in Chemical Engineering · Vol. 9, Issue 3, 2022 · pp. 21–29 Read article
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Purification of industrial wastewater using a photoelectroflotation process powered by solar energy
Abstract: The main problem of all existing electroflotation methods of wastewater treatment is salinization of the near-anode space during electroflotation, which leads to the formation of salt deposits on the anode, which strongly cover the anode surface, which can lead to a complete stop of the electroflotation process. The anode, used by electroflotation devices has a dense grid of small cells, which, on the one hand, increases the current density, but, …
Published in Emerging Trends in Chemical Engineering · Vol. 10, Issue 1, 2023 · pp. 36–53 Read article
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Assessment of Potato Starch-Polyethylene Composites Biodegradability Caused by Pseudomonas Aeruginosa and Soil Burial
Abstract: Plastics are a vital portion of modern life that is used in our everyday lives such as food packaging, construction ingredients, insulating, and many more. Plastic is a synthetic or semi-synthetic ingredient that does not rust in the natural ambiance. Worldwide plastic production is more than 78 million tons per year and about half of it is dumped in a short period, leaving behind decades of waste and landfill (more …
Published in Emerging Trends in Chemical Engineering · Vol. 10, Issue 3, 2023 · pp. 49–61 Read article
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Wear Analysis of Al-SiC Composite Valve Guide by Using ANSYS: A Review
Abstract: This application of using that can promise for the future growth. To finding a wear rate of the material and comparing to the cast iron basically using in continuous life. First of all aluminum silicon carbide using in aerospace engineering, Then some few year this composite material also can be used in automobile engineering. Aluminum silicon carbide mostly used there excellent properties like high wear resistance, low density, good strength …
Published in Journal of Automobile Engineering and Applications · Vol. 2, Issue 3, 2015 · pp. 23–29 Read article
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Physical and Mechanical Characterization of Boron carbide(B4C) and waste granite dust reinforced hybrid aluminium composite.
Abstract: In this particular study the concussion of B4C and waste granite dust reinforced on AA6082-T651 hybrid aluminium matrix composite (AMCs)which was fabricated using the stir casting process was investigated.These reinforcements were mixed and varied in the ratio of 1:0,0:1,1:1,1:3,3:1 respectively in the aluminium metal matrix composite .The physical and mechanical characterization of these AMCs were investigated.The obtained results indicate that the density of the composite XCM-5 increased by increasing the …
Published in Journal of Automobile Engineering and Applications · Vol. 8, Issue 2, 2021 · pp. 17–26 Read article
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Some Properties of Briquettes Produced from Sawdust and Different Binders using a Fabricated Hydraulic Piston Press
Abstract: AbstractThis paper describes a fabricated briquettes hydraulic piston press and some properties of the briquettes produced from sawdust when it was used. The press consists of three basic components: the main frame, the mold and a hydraulic jack fitted with pressure gauge. The parts are readily available in Nigeria and relatively cheap. The piston press was used to produce briquettes at 120 bar compaction pressure using composite sawdust and different …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 8, Issue 2, 2017 · pp. 17–23 Read article
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Light Weight Applications of Sandwich Panels in Various Industries
Abstract: Sandwich construction is of particular interest and widely used, because the concept is very suitable and amenable to the development of lightweight structures with high in-plane and flexural stiffness. Sandwich panels consist typically of two thin face sheets (or facings, or skins) and a lightweight thicker core. Commonly used materials for facings are composite laminates and metals, while cores are made of metallic and nonmetallic honeycombs, cellular foams, balsa wood …
Published in Journal of Catalyst & Catalysis · Vol. 5, Issue 1, 2018 · pp. 9–14 Read article
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Production of liquid fuel from waste plastic using batch catalytic pyrolysis process
Abstract: Waste polystyrene from households and retailing shops are recognized to be the major sources of environmental problem. On the other hand, it represents a source of energy and valuable chemical products. Pyrolysis as a technique of chemical recycling of waste plastic is as an environmentally and economically acceptable option for converting waste plastics into useful resources. In this study, the operating conditions studied were; temperature was varied from 430 to …
Published in Journal of Catalyst & Catalysis · Vol. 6, Issue 2, 2019 · pp. 34–43 Read article
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Recovery of Liquid Hydrocarbon Fuels from Polypropylene Waste Plastics via Catalytic Pyrolysis
Abstract: Process of pyrolysis is a thermo-chemical method conducted at high temperatures and usually in presence of catalysts. Dissimilar type of natural and synthetic catalysts are used for alteration of organic wastes into cherished fuels. The aim of this work is conversion of waste production of liquid fuel using catalyst that produced from rice husk ash. Waste plastic was pyrolyzed at temperature range 430-470oC and obtained products were liquid fuel, gas …
Published in Journal of Catalyst & Catalysis · Vol. 7, Issue 1, 2020 · pp. 33–48 Read article
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Mechanical Properties of Aerated Concrete
Abstract: Nowadays it is very important to make the concrete economical. Aerated concrete is ordinary concrete that contains controlled amounts of air in the form of microscopic bubbles and having low density as compare to conventional concrete. These intentionally entrained air bubbles are extremely small. By using Air Entraining Agent (AEA), cement, coarse aggregate, fine aggregate and water we create aerated concrete. The experiment is perform on aerated concrete which is …
Published in Journal of Construction Engineering, Technology & Management · Vol. 8, Issue 3, 2018 · pp. 20–29 Read article
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Performance of Polyster Fibre Reinforced Concrete
Abstract: The present work deals with the results of experimental investigations on Recron 3s Polyester fibre reinforced concrete. Effect of these fibres on various strengths of concrete are studied. Firstly 0.1% fiber content is used and after that varied from 0.2 to 1.8% at an interval of 0.2% by weight of cement. Various strengths considered for investigation are compressive strength, flexural strength, split tensile, bond strength and shear strength. Cube of …
Published in Journal of Construction Engineering, Technology & Management · Vol. 9, Issue 2, 2019 · pp. 37–46 Read article
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Experimental Investigation of Mechanical Properties of Hybrid Fiber (Basalt and Steel) Reinforced Concrete
Abstract: The paper reports experimental investigations on hybrid-reinforced concrete. The proportion of basalt fiber and steel fiber was 50% respectively of the total fiber taken as sample. Effect of fiber on various strengths of concrete is studied. Fiber content varied from 0 to 4% at an interval of 1% by weight of cement. Various considerations for investigation are compressive strength, flexural strength, split tensile and bond strength. Cube of size 150 …
Published in Journal of Construction Engineering, Technology & Management · Vol. 3, Issue 2, 2013 · pp. 5–10 Read article
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Influence of Recycled Coarse Aggregate on Properties of Concrete
Abstract: This study focuses on the influence of recycled coarse aggregate (RCA) on properties of concrete. Five different mixtures of RCA replacement comprising 0, 25, 50, 75 and 100% RCA were used. It was found that workability, saturated bulk density, compressive strength and flexural strength decreases with increase in RCA content in concrete. 100% manually RCA concrete passed the 17 kN/m2 compressive strength limit generally acceptable for concrete work of non-high …
Published in Journal of Construction Engineering, Technology & Management · Vol. 3, Issue 3, 2013 · pp. 45–53 Read article