Characterization of metal corrosion by aqueous amino acid salts for the capture of CO 2

Seongyeon Ahn, Ho Jun Song, Jin Won Park, Ji Hyun Lee, In Young Lee, Kyung Ryong Jang

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

We investigated the absorption ability of potassium salts of amino acid solutions for carbon dioxide and compared the results with MEA. The corrosion and degradation behavior were investigated in a CO 2 absorption process using aqueous potassium salts of glycine and taurine. The experimental parameters varied were the concentration, amino acid type, temperature, CO 2 loading, piperazine, and the presence of corrosion inhibitors. The corrosion characteristics of carbon steel were measured with potassium glycinate and potassium taurate solutions over a wide range of concentrations (1.5 to 5.0 M) and temperatures (313.15 to 353.15 K). The corrosion rate was calculated using a weight loss method averaging the results of four specimens. The experimental results indicate that increases in the concentration of the aqueous amino acid salts, solution temperature, CO 2 loading, and piperazine concentration accelerate the corrosion rate. In addition, corrosion inhibitors were proven to be effective in controlling corrosion.

Original languageEnglish
Pages (from-to)1576-1580
Number of pages5
JournalKorean Journal of Chemical Engineering
Volume27
Issue number5
DOIs
Publication statusPublished - 2010 Jul 16

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Carbon Monoxide
Potassium
Amino acids
Salts
Corrosion
Amino Acids
Corrosion inhibitors
Corrosion rate
Taurine
Carbon Dioxide
Glycine
Temperature
Carbon steel
Carbon dioxide
Degradation
piperazine

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Ahn, Seongyeon ; Song, Ho Jun ; Park, Jin Won ; Lee, Ji Hyun ; Lee, In Young ; Jang, Kyung Ryong. / Characterization of metal corrosion by aqueous amino acid salts for the capture of CO 2 In: Korean Journal of Chemical Engineering. 2010 ; Vol. 27, No. 5. pp. 1576-1580.
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Characterization of metal corrosion by aqueous amino acid salts for the capture of CO 2 . / Ahn, Seongyeon; Song, Ho Jun; Park, Jin Won; Lee, Ji Hyun; Lee, In Young; Jang, Kyung Ryong.

In: Korean Journal of Chemical Engineering, Vol. 27, No. 5, 16.07.2010, p. 1576-1580.

Research output: Contribution to journalArticle

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T1 - Characterization of metal corrosion by aqueous amino acid salts for the capture of CO 2

AU - Ahn, Seongyeon

AU - Song, Ho Jun

AU - Park, Jin Won

AU - Lee, Ji Hyun

AU - Lee, In Young

AU - Jang, Kyung Ryong

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AB - We investigated the absorption ability of potassium salts of amino acid solutions for carbon dioxide and compared the results with MEA. The corrosion and degradation behavior were investigated in a CO 2 absorption process using aqueous potassium salts of glycine and taurine. The experimental parameters varied were the concentration, amino acid type, temperature, CO 2 loading, piperazine, and the presence of corrosion inhibitors. The corrosion characteristics of carbon steel were measured with potassium glycinate and potassium taurate solutions over a wide range of concentrations (1.5 to 5.0 M) and temperatures (313.15 to 353.15 K). The corrosion rate was calculated using a weight loss method averaging the results of four specimens. The experimental results indicate that increases in the concentration of the aqueous amino acid salts, solution temperature, CO 2 loading, and piperazine concentration accelerate the corrosion rate. In addition, corrosion inhibitors were proven to be effective in controlling corrosion.

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