The fate of arsenic in a laminar diffusion flame

An arsenic compound (cacodylic acid) has been added to laminar diffusion flames burning in a co-flowing stream of air. Two fuels were used viz. ethene (C2H4) and a mixture of hydrogen and nitrogen. Samples of aerosols and gaseous species were collected within the flames and above the flames with fil...

Full description

Saved in:
Bibliographic Details
Published in:Combustion and flame 1994-08, Vol.98 (3), p.259-266
Main Authors: Chesworth, Scott, Yang, Gosu, Chang, Daniel P.Y., Jones, A.Daniel, Kelly, Peter B., Kennedy, Ian M.
Format: Article
Language:English
Subjects:
09 BIOMASS FUELS
092000 - Biomass Fuels- Combustion- (1990-)
400800 - Combustion, Pyrolysis, & High-Temperature Chemistry
AIR POLLUTION
ALKENES
Applied sciences
ARSENIC COMPOUNDS
CACODYLIC ACID
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COMBUSTION
COMBUSTION KINETICS
Combustion of gaseous fuels
COMBUSTION PRODUCTS
Combustion. Flame
Energy
Energy. Thermal use of fuels
ETHYLENE
Exact sciences and technology
FUELS
HYDROCARBONS
HYDROGEN FUELS
INCINERATORS
INDUSTRIAL WASTES
INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
KINETICS
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXIDATION
POLLUTION
REACTION KINETICS
SYNTHETIC FUELS
Theoretical studies. Data and constants. Metering
THERMOCHEMICAL PROCESSES
WASTES
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An arsenic compound (cacodylic acid) has been added to laminar diffusion flames burning in a co-flowing stream of air. Two fuels were used viz. ethene (C2H4) and a mixture of hydrogen and nitrogen. Samples of aerosols and gaseous species were collected within the flames and above the flames with filters and sorbent tubes. The hydrogen flame showed the conversion of arsenite to arsenate with increased residence time through the flame. The conversion of arsenite to arsenate in the ethene flames was inhibited by the emission of soot, which apparently competed with the arsenic for oxygen in the postflame gas. Arsenic was not found to be incorporated into soot particles. The carbon and arsenic were present in the posflame gases as two distinct aerosol phases. The addition of arsenic did not have a significant effect on the formation and oxidation of soot. The addition of arsenic did not lead to the production of organoarsenic species; only common polycyclic aromatics were found in the sooting flames.
ISSN:0010-2180
1556-2921
DOI:10.1016/0010-2180(94)90240-2