TY - JOUR
T1 - Trace metals supplementation in anaerobic membrane bioreactors treating highly saline phenolic wastewater
AU - Muñoz Sierra, Julian David
AU - Lafita Lopez, C.
AU - Gabaldón, Carmen
AU - Spanjers, Henri
AU - van Lier, Jules B.
PY - 2017/6/1
Y1 - 2017/6/1
N2 - Biomass requires trace metals (TM) for maintaining its growth and activity. This study aimed to determine the effect of TM supplementation and partitioning on the specific methanogenic activity (SMA), with a focus on cobalt and tungsten, during the start-up of two lab-scale Anaerobic Membrane Bioreactors (AnMBRs) treating saline phenolic wastewater. The TM partitioning revealed a strong accumulation of sodium in the biomass matrix and a wash-out of the majority of TM in the reactors, which led to an SMA decrease and a low COD removal of about 30%. The SMA exhibits a maximum at about 6 g Na+ L−1 and nearly complete inhibition at 34 g Na+ L−1. The dose of 0.5 mg L−1 of tungsten increases the SMA by 17%, but no improvement was observed with the addition of cobalt. The results suggested that TM were not bioavailable at high salinity. Accordingly, an increased COD removal was achieved by doubling the supply of TM.
AB - Biomass requires trace metals (TM) for maintaining its growth and activity. This study aimed to determine the effect of TM supplementation and partitioning on the specific methanogenic activity (SMA), with a focus on cobalt and tungsten, during the start-up of two lab-scale Anaerobic Membrane Bioreactors (AnMBRs) treating saline phenolic wastewater. The TM partitioning revealed a strong accumulation of sodium in the biomass matrix and a wash-out of the majority of TM in the reactors, which led to an SMA decrease and a low COD removal of about 30%. The SMA exhibits a maximum at about 6 g Na+ L−1 and nearly complete inhibition at 34 g Na+ L−1. The dose of 0.5 mg L−1 of tungsten increases the SMA by 17%, but no improvement was observed with the addition of cobalt. The results suggested that TM were not bioavailable at high salinity. Accordingly, an increased COD removal was achieved by doubling the supply of TM.
KW - Anaerobic Membrane Bioreactor
KW - Methanogenic activity
KW - Phenol
KW - Sodium
KW - Trace metals partitioning
UR - http://www.scopus.com/inward/record.url?scp=85015324772&partnerID=8YFLogxK
UR - http://resolver.tudelft.nl/uuid:3f348349-2b63-42cf-9d22-f50c5c23f0d4
U2 - 10.1016/j.biortech.2017.03.032
DO - 10.1016/j.biortech.2017.03.032
M3 - Article
AN - SCOPUS:85015324772
SN - 0960-8524
VL - 234
SP - 106
EP - 114
JO - Bioresource Technology
JF - Bioresource Technology
ER -