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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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