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Enhanced removal of naproxen and carbamazepine from wastewater using a novel countercurrent seepage bioreactor immobilized with Phanerochaete chrysosporium under non-sterile conditions.

Authors :
Li X
Xu J
de Toledo RA
Shim H
Source :
Bioresource technology [Bioresour Technol] 2015 Dec; Vol. 197, pp. 465-74. Date of Electronic Publication: 2015 Sep 03.
Publication Year :
2015

Abstract

A countercurrent seepage bioreactor immobilized with Phanerochaete chrysosporium was continuously operated under non-sterile conditions to treat a synthetic wastewater spiked with naproxen and carbamazepine (1000μg/L each) for 165days. There were no serious bacterial contaminations occurred during the operational period. Naproxen was always removed to the undetectable level regardless of the experimental conditions, while the average removal efficiency for carbamazepine, a well-known recalcitrant pharmaceutically active compound, reached around 80%. The excellent removal performance was mainly attributed to the application of countercurrent seepage mode and the cardhouse fabric of the carriers, which provided the high efficiency in the transfer of oxygen and nutrients inside the bioreactor. From the fungal immobilization combined with the temperature adjustment, the fungal activity including the enzyme production was protected as well as the bacterial contamination inside the reactor was suppressed effectively.<br /> (Copyright © 2015 Elsevier Ltd. All rights reserved.)

Details

Language :
English
ISSN :
1873-2976
Volume :
197
Database :
MEDLINE
Journal :
Bioresource technology
Publication Type :
Academic Journal
Accession number :
26356119
Full Text :
https://doi.org/10.1016/j.biortech.2015.08.118