Thermodynamics and kinetics of the coordination of NO to Fe /SUP II/ NTA in aqueous solutions

Journal Article · Fri Oct 01 04:00:00 EDT 1982 · Ind. Eng. Chem. Process Des. Dev.; (United States)

DOI:https://doi.org/10.1021/i200019a032· OSTI ID:5919589

Lin, N; Chang, S G; Littlejohn, D

It has been suggested (Yaverbaum, 1979) that Fe /SUP II/ EDTA can be an effective binding reagent/additive for NO in wet simultaneous flue gas desulfurization and denitrification scrubbers. The equilibrium constant of the reaction of NO with Fe /SUP II/ EDTA to form Fe /SUP II/ (EDTA)NO (Hishinuma et al., 1979) is about a factor of 2 larger than that with Fe /SUP II/ NTA to form Fe /SUP II/ (NTA)NO at a typical wet scrubber temperature, T = 50 /sup 0/C. However, NTA is less expensive than EDTA. The rate of binding of NO to form nitrosyl ferrous complexes by both Fe /SUP II/ NTA and Fe /SUP II/ EDTA is probably within the same order of magnitude and is much faster compared with the mass transfer rate at typical wet scrubber conditions. Determining the rate of regeneration of these metal chelates by investigating the kinetics of the reaction of Fe /SUP II/ (NTA)NO and Fe /SUP II/ (EDTA)NO with absorbed SO/sub 2/ in aqueous solutions is important for assessing whether NTA or EDTA is an optimum chelating agent.

• Research Organization: Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5919589
• Journal Information: Ind. Eng. Chem. Process Des. Dev.; (United States), Journal Name: Ind. Eng. Chem. Process Des. Dev.; (United States) Vol. 21:4; ISSN IEPDA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
AMINO ACIDS
AQUEOUS SOLUTIONS
CARBOXYLIC ACIDS
CHALCOGENIDES
CHELATING AGENTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
DENITRIFICATION
DESULFURIZATION
DISPERSIONS
EDTA
EQUIPMENT
FLUE GAS
GASEOUS WASTES
IRON COMPOUNDS
KINETICS
MIXTURES
NITRIC OXIDE
NITROGEN COMPOUNDS
NITROGEN OXIDES
NTA
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL EQUIPMENT
REACTION KINETICS
SCRUBBERS
SOLUTIONS
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
THERMODYNAMICS
TRANSITION ELEMENT COMPOUNDS
WASTES