Membrane Fouling Mitigation in MBR via the Feast-Famine Strategy to Enhance PHA Production by Activated Sludge.
cake layer
extracellular polymeric substances (EPS)
fouling control
membrane bioreactor (MBR)
polyhydroxyalkanoate (PHA)
resistance in series (RIS) model
soluble microbial products (SMP)
Journal
Membranes
ISSN: 2077-0375
Titre abrégé: Membranes (Basel)
Pays: Switzerland
ID NLM: 101577807
Informations de publication
Date de publication:
12 Jul 2022
12 Jul 2022
Historique:
received:
26
05
2022
revised:
28
06
2022
accepted:
06
07
2022
entrez:
25
7
2022
pubmed:
26
7
2022
medline:
26
7
2022
Statut:
epublish
Résumé
Fouling is considered one of the main drawbacks of membrane bioreactor (MBR) technology. Among the main fouling agents, extracellular polymeric substances (EPS) are considered one of the most impactful since they cause the decrease of sludge filterability and decline of membrane flux in the long term. The present study investigated a biological strategy to reduce the membrane-fouling tendency in MBR systems. This consisted of seeding the reactor with activated sludge enriched in microorganisms with polyhydroxyalkanoate (PHA) storage ability and by imposing proper operating conditions to drive the carbon toward intracellular (PHA) rather than extracellular (EPS) accumulation. For that purpose, an MBR lab-scale plant was operated for 175 days, divided into four periods (1-4) according to different food to microorganisms' ratios (F/M) (0.80 kg COD kg TSS
Identifiants
pubmed: 35877906
pii: membranes12070703
doi: 10.3390/membranes12070703
pmc: PMC9317799
pii:
doi:
Types de publication
Journal Article
Langues
eng
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