Please use this identifier to cite or link to this item: http://repositorio.lnec.pt:8080/jspui/handle/123456789/1015911
Title: Designing renewable-source derived activated carbons for the adsorption of pharmaceutical compounds from urban wastewater
Authors: Mestre, A.S.
Viegas, R.M. C.
Duque, L.P.
Mesquita, E.
Andrade, M. A.
Rosa, M. J.
Carvalho, A. P.
Keywords: Novel powdered activated carbons;Adsorption;Pharmaceutical compounds;Wastewater treatment
Issue Date: Sep-2022
Publisher: RIA
Abstract: The removal of pharmaceutical compounds (PhCs) from water has numerous challenges mainly associated with their low concentration and varied nature and physicalo-chemical properties. Activated carbon adsorption and ozonation are considered consolidated technologies, with confirmed cost-efficient elimination of organic microcontaminants and toxicity in several full-scale wastewater treatment plants (WWTPs), namely in Switzerland and in Germany. Several biomass precursors, activation agents, and routes were explored at lab-scale (including cork processing by-products and carob processing acid residues pinpointing pine nut shell (PNS) as the most promising raw material: PAC steam activated sample PNS77/Steam performed similarly to the commercial golden standards (from Cabot-Norit and Chemviron). PNS-derived PAC production was scaled-up using CO2 activation and results prove that, for similar burn-off degrees, steam and CO2 activation attain similar and excellent textural properties. PACs were tested in WWTP mixed liquor and secondary effluent. Data modelling (HSDM – Freundlich isotherm) allowed estimating the PAC dose to the CAS bioreactor required for a given overall removal of the target-PhCs. Currently, EMPOWER+ project builds on the promising PNS-derived PACs, is focused on testing their performance for drinking water treatment (DWT) in both conventional and advanced treatment (adsorption/low-pressure membrane) technologies. Preliminary data prove that these lab-made materials also attain a high performance in this high- value application.
URI: https://repositorio.lnec.pt/jspui/handle/123456789/1015911
Appears in Collections:DHA/NES - Comunicações a congressos e artigos de revista

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