Resumo

MORENO ALCANTARA, Jaime; CHAVEZ TORRES, Rosa Hilda; COLIN CRUZ, Arturo  e  PAVON SILVA, Thelma Beatriz. Ethanol amine loss in the EA-H₂O-air and EA H₂O-O₂ systems. Rev. Int. Contam. Ambient [online]. 2015, vol.31, n.3, pp.271-278. ISSN 0188-4999.

EA-H₂0-Air and EA H₂O-O₂ systems were evaluated in order to establish the contribution of air and O₂ in the absence of CO₂ in the loss of ethanolamine (EA) in an aqueous solution of 30 % for the CO₂ capture process. Experiments were performed with air supply flows and O₂ at room temperature for 16 h, every 2 h; pH, temperature and concentration of EA were recorded. EA loss in the EA-H₂0-air system occurred in the first two hours, being higher at low flows compared to high flows. With a flow of 11.27 mL/s was lost on average 10.5 %, whereas with a flow of 35.14 mL/s loss was 2.44 %. EA loss decreased as the air flow is increased, without depending on air supply times. EA loss in the EA-H₂0-0₂ system was not significant when oxygen was fed 16 h in the flows studied.

Palavras-chave : CO₂ capture; chemical absorption.