Enhanced removal of pharmaceuticals in a biofilter: Effects of manipulating co-degradation by carbon feeding

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

Biofilm reactors are a promising biotechnology to eliminate pharmaceuticals from wastewater during tertiary treatment or in water works for drinking water production. This study aimed at investigating the effects of pulsed carbon feeding for promoting the co-degradation of indigenous pharmaceuticals from pre-treated wastewater in a fixed-bed porous biofilm reactor (slow sand filter). The addition of acetate (carbon source) resulted in three different enhancement/limitation effects, which were compound dependent: 1) atenolol and iohexol experienced enhanced co-degradation followed by constant (acetate independent) degradation; 2) metoprolol, iomeprol, diclofenac, propranolol and sulfamethizole co-degradation dependent on aerobic turnover, but inhibited at higher acetate concentrations (60–300 mg C/L); 3) sulfadiazine, sulfamethoxazole and trimethoprim were removed independently of oxygen and acetate concentration. Carbamazepine, ditriazoic acid, iopromide; tramadol and venlavaxine were not removed at any acetate dosage. Biofilm reactors can be employed for polishing treated wastewater, and the addition of a primary carbon source can enhance the performance of the bioreactor.

Original languageEnglish
Article number124303
JournalChemosphere
Volume236
Number of pages10
ISSN0045-6535
DOIs
Publication statusPublished - 1 Dec 2019

    Research areas

  • ACTIVATED-SLUDGE, BANK FILTRATION, Biodegradation, Biofiltration, CONSTRUCTED WETLAND, Co-metabolism, HYBRID BIOFILM, MICROBIAL COMMUNITY, MICROPOLLUTANT REMOVAL, Micropollutants, PERSONAL CARE PRODUCTS, PRIMARY SUBSTRATE COMPOSITION, Sand filter, TRACE ORGANIC-CHEMICALS, WASTE-WATER TREATMENT

See relations at Aarhus University Citationformats

ID: 159579488