Wet Chemical Oxidation of Organic Waste Using Nitric-Phosphoric Acid Technology Page: 13 of 27
This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided to UNT Digital Library by the UNT Libraries Government Documents Department.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
FY97 Summary Report
SR1-6-MW-32, Task A
it was determined that a maximum concentration of 61.3 wt% could be obtained with
30% H202 and 78.7 wt% with 50% H202. These calculations do not account for any acid
formation which may occur due to NO2 absorption by the balance of water in the
hydrogen peroxide solution.
It is important to note that the presence of NO gas in the stream reduces the maximum
theoretical concentration. The reaction of NO with H202 is as follows:
2 NO + 3 H202 - 2 HNO3+2 H20
Not only is peroxide use efficiency reduced, but there is also a dilution effect from the
water in the reaction products. This yields theoretical maximum acid concentrations of
47.0 wt% for 30% H202 and 60.8 wt% for 50% H202.
Results:
Experiments were conducted to study NOx absorption into hydrogen peroxide to confirm
design parameters for the pilot-scale acid recycle unit. Four key parameters were
evaluated: NO:02
ratio, residence time to Absorption in 30% Peroxide (RT= 60 sec)
convert NO to NO2
prior to absorption, 14.00
percent hydrogen 12.00
peroxide, and use of ----1:2 - Air
oxygen versus air to ----2:2-Air.
convert NO to NO2. 8.00 - - 1:2- _xy
A series of twelve u 6.00 -x-
tests were run in 4.oo ---4005:2 -Air
which NO was 2.00 j
generated, pumped at
a constant rate, mixed 0.00 0
with an oxygen source Sample #
fed at a constant rate,
through hydrogen
peroxide. The liquid was then titrated to determine acid concentrations.9
Upcoming Pages
Here’s what’s next.
Search Inside
This report can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Report.
Pierce, R. A. Wet Chemical Oxidation of Organic Waste Using Nitric-Phosphoric Acid Technology, report, October 6, 1998; South Carolina. (https://digital.library.unt.edu/ark:/67531/metadc674230/m1/13/: accessed April 24, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.