Anaerobic membrane reactor with phase separation for the treatment of cheese whey.
Bioresour Technol
; 98(11): 2102-8, 2007 Aug.
Article
in En
| MEDLINE
| ID: mdl-17046243
ABSTRACT
Two-phase anaerobic digestion of cheese whey was investigated in a system consisting of a stirred acidogenic reactor followed by a stirred methanogenic reactor, the latter being coupled to a membrane filtration system to enable removal of soluble effluent whilst retaining solids. The acidogenic reactor was operated at a hydraulic retention time (HRT) of one day, giving maximum acidification of 52.25% with up to 5 g/l volatile fatty acids, of which 63.7% was acetic acid and 24.7% was propionic acid. The methanogenic reactor received an organic load up to 19.78 g COD/ld, corresponding to a HRT of 4 days, at which 79% CODs and 83% BOD(5) removal efficiencies were obtained. Average removals of COD, BOD(5) and TSS in the two-phase anaerobic digestion process were 98.5%, 99% and 100%, respectively. The daily biogas production exceeded 10 times reactor volume and biogas methane content was greater than 70%.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Bacteria, Anaerobic
/
Cheese
/
Waste Management
/
Bioreactors
/
Industrial Waste
Language:
En
Journal:
Bioresour Technol
Journal subject:
ENGENHARIA BIOMEDICA
Year:
2007
Document type:
Article
Affiliation country: