Integrated adsorption and biological removal of the emerging contaminants ibuprofen, naproxen, atrazine, diazinon, and carbaryl in a horizontal tubular bioreactor

Autor: Isabel Ambriz-Mexicano, Soledad González-Juárez, Nora Ruiz-Ordaz, Juvencio Galíndez-Mayer, Fortunata Santoyo-Tepole, Cleotilde Juárez-Ramírez, Marcela Galar-Martínez
Rok vydání: 2022
Předmět:
Zdroj: Bioprocess and Biosystems Engineering. 45:1547-1557
ISSN: 1615-7605
1615-7591
DOI: 10.1007/s00449-022-02764-2
Popis: Groundwater and surface water bodies may have contaminants from urban, industrial, or agricultural wastewater, including emerging contaminants (ECs) or micropollutants (MPs). Frequently, they are not efficiently removed by microbial action due to their minimal concentration in water and the low microbiota affinity for complex compounds. This work developed a process allowing the adsorption of contaminants and their simultaneous biodegradation using horizontal tubular fixed-bed biofilm reactors (HTR). Each HTR has two zones: an equalizer-aerator of the incoming liquid flow and a fixed bed zone. This zone was packed with a mixed support material consisting of granular bio-activated carbon (Bio-GAC) and porous material that increases the bed permeability, thus decreasing the pressure drop. Five microbial communities were acclimated and immobilized in granular activated carbon (GAC) to obtain different specialized Bio-GAC particles able to remove the micropollutants ibuprofen, naproxen, atrazine, carbaryl, and diazinon. The Bio-GAC particles were transferred to HTRs continuously run in microaerophilia at several MPs loading rates. Under these conditions, the removal efficiencies of MPs, except atrazine and carbaryl, were around 100.
Databáze: OpenAIRE
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