Nitrification of the liquid phase of digestate: The transfer of the process from laboratory to pilot plant and full scale conditions

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F23%3A43934112" target="_blank" >RIV/60461373:22320/23:43934112 - isvavai.cz</a>

Alternative codes found

RIV/60460709:41210/23:95600

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S2352186423000809" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2352186423000809</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>

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-NO- 2 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/(m3middotd) and 99.9%, respectively, at N-NO- 2 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/(m3middotd)). The results could be used to accelerate the method transfer into practice.(c) 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20701 - Environmental and geological engineering, geotechnics

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Environmental Technology &amp; Innovation

ISSN

2352-1864

e-ISSN

2352-1864

Volume of the periodical

30

Issue of the periodical within the volume

1

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

12

Pages from-to

nestránkováno

UT code for WoS article

000949982700001

EID of the result in the Scopus database

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