| 2 | Electrochemically assisted production of biogenic palladium nanoparticles for the catalytic removal of micropollutants in wastewater treatment plants effluent显示文摘Biogenic palladium nanoparticles(bio-Pd NPs)are used for the reductive transformation and/or dehalogenation of persistent micropollutants.In this work,H2(electron donor)was produced in situ by an electrochemical cell,permitting steered production of differently sized bio-Pd NPs.The catalytic activity was first assessed by the degradation of methyl orange.The NPs showing the highest catalytic activity were selected for the removal of micropollutants from secondary treated municipal wastewater.The synthesis at different H2 flow rates(0.310 L/hr or 0.646 L/hr)influenced the bio-Pd NPs size.The NPs produced over 6 hr at a lowH2 flow rate had a larger size(D50=39.0 nm)than those produced in 3 hr at a high H2 flow rate(D50=23.2 nm).Removal of 92.1%and 44.3%of methyl orange was obtained after 30 min for the NPs with sizes of 39.0 nm and 23.2 nm,respectively.Bio-Pd NPs of 39.0 nm were used to treat micropollutants present in secondary treated municipal wastewater at concentrations ranging fromμg/L to ng/L.Effective removal of 8 compounds was observed:ibuprofen(69.5%)94.3%)90%efficiency.Overall,these data indicate that the size,and thus the catalytic activity of the NPs can be steered and that the removal of challengingmicropollutants at environmentally relevant concentrations can be achieved through the use of bio-Pd NPs. | Cindy Ka Y Law Kankana Kundu Luiza Bonin Lorena Peñcoba-Antona Eduardo Bolea-Fernandez Frank Vanhaecke Korneel Rabaey Abraham Esteve-Nez Bart De Gusseme Nico Boon | 2023 | Journal of Environmental Sciences2023，，6： | 1 |
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