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

被引:8
作者
Hua, Guoxiong
Zhang, Qingzhi
McManus, Derek
Slawin, Alexandra M. Z.
Woollins, J. Derek [1 ]
机构
[1] Univ St Andrews, Sch Chem, St Andrews KY16 9ST, Fife, Scotland
[2] US Filter Corp Inc, Plainfield, IL USA
关键词
ethylene glycol; Fe-NTA system; N-methylpyrrolidinone; scavenger of hydroxyl radicals;
D O I
10.1080/10426500600892552
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
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.
引用
收藏
页码:181 / 198
页数:18
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