Electrochemical removal of nitrate and its intermediates, ammonia and nitrite, by use of a bipolar electrode connection, was investigated under different experimental conditions (initial pH (4, 7, or 10) current density (5, 10, or 15 mA/cm2), nitrate concentration (25, 50, or 75 mg/L NO3 −-N), with or without NaCl as supporting electrolyte). The results showed that nitrate and intermediates were significantly removed in the presence of NaCl as supporting electrolyte; ammonia and nitrite were not removed in the absence of NaCl. Nitrate was reduced from 50 to 8.65 mg/L NO3 −-N in 150 min; under these conditions final ammonia and nitrite concentrations were 3.36 mg/L NH3 and 0.01 mg/L NO2 −-N, respectively. Denitrification times required to reduce nitrate concentration to the recommended standard for drinking water of 10 mg/L NO3 −-N were 180, 120, and 60 min at current densities of 5, 10, and 15 mA/cm2, respectively; initial nitrate concentration is 50 mg/L NO3 −-N. The rate of reduction of nitrate at pH 7 and 10 was greater than at pH 4. With increasing initial nitrate concentration the time required to achieve the recommended standard for drinking water was increased.
Research on Chemical Intermediates – Springer Journals
Published: Jun 15, 2013
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera