scholarly journals The Diesel Soot Particles Fractal Growth Model and Its Agglomeration Control

2019 ◽  
Author(s):  
Ping Liu ◽  
Chunying Wang
Keyword(s):  
Growth Model ◽  
Diesel Soot ◽  
Fractal Growth ◽  
Soot Particles

OPTICAL PROPERTIES OF AIRBORNE DIESEL SOOT PARTICLES

2001 ◽  
Vol 32 ◽  
pp. 421-422
Author(s):  
K.-H. NAUMANN ◽  
H. SAATHOFF ◽  
M. SCHNAITER ◽  
U. SCHURATH
Keyword(s):  
Optical Properties ◽  
Diesel Soot ◽  
Soot Particles

Impact of multi-injection strategies on morphology, nanostructure and oxidation reactivity of diesel soot particles

2022 ◽  
Vol 237 ◽  
pp. 111854
Author(s):  
Xingyu Liang ◽  
Bowen Zhao ◽  
Kun Wang ◽  
Xu Lv ◽  
Yajun Wang ◽  
...  
Keyword(s):  
Diesel Soot ◽  
Soot Particles ◽  
Oxidation Reactivity ◽  
Injection Strategies

Catalytic combustion of diesel soot particles. Activity and characterization of Co/MgO and Co,K/MgO catalysts

1998 ◽  
Vol 15 (1-2) ◽  
pp. 5-19 ◽  
Author(s):  
C.A. Querini ◽  
M.A. Ulla ◽  
F. Requejo ◽  
J. Soria ◽  
U.A. Sedrán ◽  
...  
Keyword(s):  
Catalytic Combustion ◽  
Diesel Soot ◽  
Soot Particles

scholarly journals Combustion characteristics of water-insoluble elemental and organic carbon in size selected ambient aerosol particles

2005 ◽  
Vol 5 (7) ◽  
pp. 1905-1913 ◽  
Author(s):  
K. Wittmaack
Keyword(s):  
Organic Carbon ◽  
Ambient Air ◽  
Diesel Soot ◽  
Water Soluble ◽  
Soot Combustion ◽  
Complete Combustion ◽  
Ambient Aerosol ◽  
Soot Particles ◽  
Inorganic Oxides ◽  
Wide Range

Abstract. Combustion of elemental carbon (EC) and organic carbon (OC) contained in ambient aerosol matter was explored using scanning electron microscopy (SEM) in combination with energy dispersive X-ray analysis (EDX). To ease identification of the particles of interest and to avoid or at least reduce interaction with simultaneously sampled inorganic oxides and salts, the approach used in this work differed in two ways from commonly applied procedures. First, rather than using a mixture of particles of vastly different sizes, as in PM10 or PM2.5, aerosol matter was collected in a 5-stage impactor. Second, the water soluble fraction of the collected matter was removed prior to analysis. Diesel soot particles, which appeared in the well-known form of chain-type aggregates, constituted the major fraction of EC. In contrast, OC containing particles were observed in a variety of shapes, including a sizable amount of bioaerosol matter appearing mostly in the size range above about 1 µm. During heating in ambient air for 1h, diesel soot particles were found to be stable up to 470°C, but complete combustion occurred in a narrow temperature interval between about 480 and 510°C. After diesel soot combustion, minute quantities of "ash" were observed in the form of aggregated tiny particles with sizes less than 10 nm. These particles could be due to elemental or oxidic contaminants of diesel soot. Combustion of OC was observed over a wide range of temperatures, from well below 200°C to at least 500°C. Incompletely burnt bioaerosol matter was still found after heating to 600°C. The results imply that the EC fraction in aerosol matter can be overestimated significantly if the contribution of OC to a thermogram is not well separated.

scholarly journals Modeling And Designing Simulation Using CFD Computational Fluid Dynamics Application For The Process Of Capture Diesel Soot Particles By Hydro Cyclone

2019 ◽  
Vol 26 (3) ◽  
pp. 105-111
Author(s):  
Mai Hanna Shahda ◽  
Mahmod Alfattamah ◽  
Youssef Johar
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Flow Simulation ◽  
Diesel Soot ◽  
Product Performance ◽  
Diesel Generator ◽  
Soot Particles ◽  
Fluid Forces ◽  
Computational Fluid Dynamics Cfd ◽  
The Impact

The research aims to predict the efficiency of capturing the soot particles generated by the diesel generator within the Hydro Cyclone by conducting the applied study using the Computational Fluid Dynamics (CFD) application through modeling and simulation of the turbulent flow within the Hydro Cyclone using SOLIDWORKS Flow Simulation. The ability to predict the impact of such flows on your product performance is time consuming and costly without some form of simulation tools...SOLIDWORKS Flow Simulation uses Computational Fluid Dynamics (CFD) analysis to enable quick, efficient simulation of fluid flow and can easily calculate fluid forces and help the designer to understand the impact of a liquid or gas on product performance and comparing the results with experimental reality. In this research, the engineering simulation confirmed the importance of using Hydro Cyclone in the capture of diesel soot particles by an error rate of only 4% compared to experimental reality.

scholarly journals Diesel Soot — Catalyzed Production of Reactive Oxygen Species: Cooperative Effects with Bisulfite

1989 ◽  
Vol 44 (5-6) ◽  
pp. 514-523 ◽  
Author(s):  
S. C. Hippeli ◽  
E. F. Elstner
Keyword(s):  
Reactive Oxygen Species ◽  
Membrane Damage ◽  
Diesel Soot ◽  
Peroxidation Of Lipids ◽  
Oxygen Species ◽  
Plant Pigments ◽  
Soot Particles ◽  
Cooperative Effects ◽  
Enhanced Chemiluminescence ◽  
Cooperative Activity

Abstract The fragmentation of KMB (4-(methylthio)-2-oxobutyric acid) as an indicator reaction for the production of strong oxidants is catalyzed by diesel soot particles in the light. This reaction operates also in the dark and can be strongly stimulated by the addition of sulfite. The cooperative activity of diesel soot particles (DP) and sulfite also bleaches the carotenoid crocin. This molecule represents a model for both the groups of plant pigments as well as polyene structures embedded as flexible backbones in cellular membranes. Enhanced chemiluminescence generated by linolenic acid in the presence of either ter/-butylhydroperoxide or hydrogenperoxide is detected in the presence of both DP and HSO3-. Luminescence originates from singlet oxygen or chemically excited molecules such as triplet ketones and is thus a valuable indicator for peroxidation of lipids involved in membrane damage. All reactions were inhibited by SOD (superoxide dismutase) whereas catalase had no effect.

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