Nitrification of the liquid phase of digestate: The transfer of the process from laboratory to pilot plant and full scale conditions
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41210%2F23%3A95600" target="_blank" >RIV/60460709:41210/23:95600 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.eti.2023.103084" target="_blank" >https://doi.org/10.1016/j.eti.2023.103084</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.eti.2023.103084" target="_blank" >10.1016/j.eti.2023.103084</a>
Alternative languages
Result language
angličtina
Original language name
Nitrification of the liquid phase of digestate: The transfer of the process from laboratory to pilot plant and full scale conditions
Original language description
This paper aimed to verify the laboratory research results related to the liquid phase of digestate (LPD) treatment using nitrification at pilot scale conditions and to suggest an optimal method for full-scale system start-up. A reactor applying the nitrification of LPD was operated for 358 days. Significant free ammonia and free nitrous acid inhibition towards nitrite-oxidizing bacteria (NOB) increased N-NO2- concentrations up to 2300 mg/L in LPD. As a result of pH and a nitrogen loading rate control combined with the re-inoculation of the reactor, NOB activity was fully restored after 90 days, where the nitrogen oxidation rate and nitrogen oxidation efficiency reached up to 0.26 kg/(m3·d) and 99.9%, respectively, at N-NO2- concentrations not exceeding 45 mg/L. Thus, the feasibility of stable operation of the system even without any dilution of LPD was confirmed. The procedure of full-scale reactor start-up consisting of a separate unit serving to produce nitrifying biomass was suggested. It was shown that the volume of such a reactor could be divided into three compartments to optimize the start-up. Simple modeling proved the possibility of completing the start-up process in 34 days under specific conditions (total ammonia concentrations in LPD 2 kg/m3, daily production of LPD 20 m3/d, nitrogen loading rate reaching 0.25 kg/(m3·d)). The results could be used to accelerate the method transfer into practice.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
40101 - Agriculture
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ENVIRONMENTAL TECHNOLOGY & INNOVATION
ISSN
2352-1864
e-ISSN
2352-1864
Volume of the periodical
30
Issue of the periodical within the volume
MAY 2023
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
12
Pages from-to
1-12
UT code for WoS article
000949982700001
EID of the result in the Scopus database
2-s2.0-85149737782