Document Detail


The effect of pH on sonochemical degradation of hydrazine.
MedLine Citation:
PMID:  17267257     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The degradation of hydrazine (N(2)H(4)) with concentrations of 0.1 and 1.0 mmol/L was investigated as a function of pH under the stirring (300 rpm) and ultrasonic irradiation (200 kHz, 200 W) conditions. It was found that the hydrazine degradation depended greatly upon pH under the ultrasonic irradiation condition, while it did not take place over the whole pH range (0.8-9) under the stirring condition. The hydrazine degradation was suppressed by the addition of tertial butyl alcohol (t-BuOH) known as a scavenger of OH radicals. This result suggested that OH radicals played an important role in the hydrazine degradation. The pH dependence of the hydrazine degradation was discussed in terms of a dissociating form of hydrazine depending upon pH and the effect of OH radicals.
Authors:
H Nakui; K Okitsu; Y Maeda; R Nishimura
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Publication Detail:
Type:  Journal Article     Date:  2007-01-30
Journal Detail:
Title:  Ultrasonics sonochemistry     Volume:  14     ISSN:  1350-4177     ISO Abbreviation:  Ultrason Sonochem     Publication Date:  2007 Jul 
Date Detail:
Created Date:  2007-04-30     Completed Date:  2007-08-03     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9433356     Medline TA:  Ultrason Sonochem     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  627-32     Citation Subset:  IM    
Affiliation:
Environment Science Laboratory, Chigasaki Research Institute, Electric Power Development Co., Ltd., 9-88, Chigasaki 1-Chome, Chigasaki, Kanagawa 253-0041, Japan. hiroyuki_nakui@jpower.co.jp <hiroyuki_nakui@jpower.co.jp>
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MeSH Terms
Descriptor/Qualifier:
Equipment Design
Hydrazines / chemistry*
Hydrogen-Ion Concentration
Ultrasonics*
Water Pollutants, Chemical / chemistry*
Water Purification / instrumentation,  methods*
Chemical
Reg. No./Substance:
0/Hydrazines; 0/Water Pollutants, Chemical; 302-01-2/hydrazine

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