Improvement of the Fe-NTA sulfur recovery system by the addition of a hydroxyl radical scavenger

Guoxiong Hua; Qingzhi Zhang; Derek McManus; Alexandra M. Z. Slawin; J. Derek Woollins

doi:10.1080/10426500600892552

Improvement of the Fe-NTA sulfur recovery system by the addition of a hydroxyl radical scavenger

Guoxiong Hua, Qingzhi Zhang, Derek McManus, Alexandra M. Z. Slawin, J. Derek Woollins

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

The degradation of Nitrilotriacetic Acid (NTA), which results from the oxidation of hydroxyl radicals formed in the process, is a major deficiency in the present Fe-NTA system for the oxidation of hydrogen sulfide to sulfur by air. The degradation of NTA can be slowed down considerably by the addition of a hydroxyl radical scavenger. In this study, a series of inorganic and organic materials was tested as scavengers/inhibitors of hydroxyl radicals in attempts to improve the Fe-NTA system. The results showed that N-methylpyrrolidinone and ethylene glycol could be used as potentially powerful scavengers of hydroxyl radicals to improve the Fe-NTA system.

Original language	English
Pages (from-to)	181-198
Number of pages	18
Journal	Phosphorus, Sulfur, and Silicon and the Related Elements
Volume	182
Issue number	1
DOIs	https://doi.org/10.1080/10426500600892552
Publication status	Published - Jan 2007

Keywords

ethylene glycol
Fe-NTA system
N-methylpyrrolidinone
scavenger of hydroxyl radicals
IRON(III) COMPLEXES
ACID
FE(II)/FE(III)
OXIDATION
MELATONIN
LIGANDS
H2S

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10.1080/10426500600892552

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abstract = "The degradation of Nitrilotriacetic Acid (NTA), which results from the oxidation of hydroxyl radicals formed in the process, is a major deficiency in the present Fe-NTA system for the oxidation of hydrogen sulfide to sulfur by air. The degradation of NTA can be slowed down considerably by the addition of a hydroxyl radical scavenger. In this study, a series of inorganic and organic materials was tested as scavengers/inhibitors of hydroxyl radicals in attempts to improve the Fe-NTA system. The results showed that N-methylpyrrolidinone and ethylene glycol could be used as potentially powerful scavengers of hydroxyl radicals to improve the Fe-NTA system.",

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AU - Zhang, Qingzhi

AU - McManus, Derek

AU - Slawin, Alexandra M. Z.

AU - Woollins, J. Derek

PY - 2007/1

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KW - IRON(III) COMPLEXES

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KW - FE(II)/FE(III)

KW - OXIDATION

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KW - H2S

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ER -

Improvement of the Fe-NTA sulfur recovery system by the addition of a hydroxyl radical scavenger

Abstract

Keywords

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