Reaction of iron with monoeth anolamine

Abstract

The deterioration of ethanolamine used in absorption plant is attributed principally to the formation of complexes of iron and ethanolamine. These salts have been isolated and synthesized their constitution, properties and the effect of their presence on the absorption process are discussed.

Reclaiming of degraded MEA solutions by electrodialysis: Results of ED pilot campaign at post-combustion CO 2 capture pilot plant

“…This effect can be explained by a few reasons: (1) from different ED application fields it is widely known that multivalent ions (heavy metals ions in our case) are more strongly retained in the membrane material and thus thought to be transported more slowly (Van der Bruggen et al, 2004;Pérez et al, 1994;Andrés et al, 1995;Šímová et al, 2010); (2) due to relatively high pH value of solvent (pH > 10) it is quite possible that determined heavy metals are presented as extremely fine particulate matter (e.g. iron hydroxide) or in charged, chelated forms like bulky complexes with MEA (Scheiman, 1962;Dixon and Williams, 1950;Salem, 1995) having a reddish-brown color, which transport is extremely hindered. The latter reason seems to be confirmed by the presence of the deposition of metals derived particles on the membrane surfaces (see Section 3.5).…”

Ethanolamines and Propanolamines

“…Monoethanolamine and triethanolamine can form complexes with transition metal ions (e.g., chromium, copper, nickel, cobalt, and iron); some of these complexes are water-soluble [123][124][125].…”

Sources of Ignition

“…This thermally unstable material is believed to have accumulated and subsequently decomposed on steam coils in the temperature range 130-160°C (Dixon and Williams 1950). This thermally unstable material is believed to have accumulated and subsequently decomposed on steam coils in the temperature range 130-160°C (Dixon and Williams 1950).…”