Skip to main content
Przejdź do strony domowej Komisji Europejskiej (odnośnik otworzy się w nowym oknie)
polski pl
CORDIS - Wyniki badań wspieranych przez UE
CORDIS
Zawartość zarchiwizowana w dniu 2024-04-30

Mass transfer phenomena in methanogenic and sulphidogenic aggregates - characterisation and optimisation based on nmr

Cel



In anaerobic wastewater treatment, Upflow Anaerobic Sludge Blanket (UAS reactors operating under sulphidogenic conditions (COD/SO42- < 1) are an emerging reactor technology for the treatment of sulfate rich wastewater. Unlike methanogenic reactors, few gaseous end products are formed, resulting in inferior mass transfer rates compared to methanogenic UASB reactors.
The aim of this research proposal is to study possible improvement of t treatment efficiency of such sulphidogenic bioreactors by improved mass transfer. Three ways to accelerate mass transfer will be studied: (i) upflow velocity in the reactor, (ii) mixing by gas evolution and (iii) the 'breathing' granule principle. The latter consists of alternate compression and expansion of granules.
The effect of these operational strategies will be evaluated in laboratory scale reactors using specially developed NMR-techniques, i.e. pulsed gradient spin echo-NMR (PGSE-NMR) imaging, PGSE-NMR spectroscopy and chemical shift imaging. NMR was chosen as this non invasive technique provides information inaccessible compared to ex vivo techniques like microelectrodes or confocal microscopy. However, to assess the accuracy and reproducibility of the developed NMR protocols, the effective diffusion and mass transfer coefficients obtained by NMR will be compared to those obtained by microelectrode measurements.
The insight in mass transfer phenomena given by the NMR techniques, in combination with the operation of laboratory scale bioreactors will contribute to the optimisation of the process efficiency of UASB reactors operating under fully sulphidogenic conditions.

Dziedzina nauki (EuroSciVoc)

Program(-y)

Temat(-y)

Zaproszenie do składania wniosków

Brak dostępnych danych

System finansowania

RGI - Research grants (individual fellowships)

Koordynator

Landbouwuniversiteit Wageningen
Wkład UE
Brak danych
Adres
3,Dreijenlaan 3
6703 HA Wageningen
Niderlandy
Koszt całkowity
Brak danych

Uczestnicy (1)