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Nitrous oxide emission depending on the type of electron acceptor by a denitrifying phosphorus removal sludgeView Crossref metadata(active tab) <div id="edit-xml" class="form-item form-type-item"> <?xml version="1.0"?> <doi_batch version="4.4.1" xmlns="http://www.crossref.org/schema/4.4.1" xmlns:jats="http://www.ncbi.nlm.nih.gov/JATS1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.crossref.org/schema/4.4.1 http://www.crossref.org/schemas/crossref4.4.1.xsd"><head><doi_batch_id>000696</doi_batch_id><timestamp>1714141093</timestamp><depositor><depositor_name>University of the Aegean</depositor_name><email_address>uoa@university.com</email_address></depositor><registrant>Global NEST Journal</registrant></head><body><journal><journal_metadata><full_title>Global NEST Journal</full_title><full_title>Global NEST: the international Journal</full_title><issn media_type="print">1790-7632</issn><issn media_type="electronic">2241-777X</issn></journal_metadata><journal_issue><titles><title>Issue 2</title></titles><publication_date><month>06</month><year>2024</year></publication_date><journal_volume><volume>18</volume></journal_volume><issue>2</issue></journal_issue><journal_article><titles><title>Nitrous oxide emission depending on the type of electron acceptor by a denitrifying phosphorus removal sludge</title></titles><abstract xmlns="http://www.ncbi.nlm.nih.gov/JATS1"><p><div> <p>Denitrifying polyphosphate accumulating organisms (DNPAOs) are very promising for simultaneous nitrogen and phosphorus removal. While during denitrification, emission of a greenhouse gas, nitrous oxide (N<sub>2</sub>O), may occur. In this study, DNPAOs were enriched in a lab-scale reactor, and N<sub>2</sub>O emission was examined under different electron acceptor conditions. During the anoxic phase, with the uptake of phosphorus, denitrification of nitrate nitrogen (NO<sub>3</sub>-N) was observed without the accumulation of nitrite nitrogen (NO<sub>2</sub>-N). In general, a very low amount of N<sub>2</sub>O was produced with nitrate as the electron acceptor, independent of the applied different nitrate concentrations. However, with nitrite as the electron acceptor, a much higher N<sub>2</sub>O emission occurred. The N<sub>2</sub>O emission factor to the denitrified NO<sub>2</sub>-N was 6.2%, 5.3% and 4.9% at the initial NO<sub>2</sub>-N concentration of 10, 20 and 40 mg l<sup>-1</sup>, respectively. In addition, a much higher N<sub>2</sub>O emission occurred with the co-existence of NO<sub>3</sub>-N and NO<sub>2</sub>-N. The initial organic carbon concentration had no significant effect on N<sub>2</sub>O emission with NO<sub>3</sub>-N as the electron acceptor. When stored organic carbon by DNPAOs was used as the electron donor, N<sub>2</sub>O emission was mainly dependent on the electron acceptor. </p> </div> <p> </p> </p></abstract><publication_date><month>04</month><day>12</day><year>2016</year></publication_date><pages><first_page>251</first_page><last_page>258</last_page></pages><publisher_item><identifier id_type="pii">gnest_01844</identifier></publisher_item><doi_data><doi>10.30955/gnj.001844</doi><timestamp>1714141093</timestamp><resource>https://journal.gnest.org/publication/gnest_01844</resource></doi_data></journal_article></journal></body></doi_batch> </div>
