Suchergebnisse

AbstractThe combination of photocatalysis and biodegradation was investigated for the removal of nine selected pharmaceuticals as a means to reduce loadings into the environment. The combined process, consisting of a resource‐efficient mild photocatalysis and a subsequent biological treatment, was compared to single processes of intensive photocatalysis and biological treatment. The UV‐TiO2 based photocatalysis effectively removed atorvastatin, atenolol and fluoxetine (>80%). Biological treatment after mild photocatalytic pretreatment removed diclofenac effectively (>99%), while it persisted during the single biological treatment (<50%). Moreover, the biodegradation of atorvastatin, caffeine, gemfibrozil and ibuprofen was enhanced after mild photocatalytic pretreatment compared to biological treatment alone. The enhanced biodegradation of these pharmaceuticals appeared to be triggered by the biodegradation of photocatalytic products. Mild photocatalysis followed by biological treatment is an effective and resource‐efficient combination for pharmaceutical removal that could substantially reduce the loading of pharmaceuticals into the environment.

Background: Over the past 10-15 years, a substantial amount of work has been done by the scientific, regulatory, and business communities to elucidate the effects and risks of pharmaceuticals and personal care products (PPCPs) in the environment. Objective: This review was undertaken to identify key outstanding issues regarding the effects of PPCPs on human and ecological health in order to ensure that future resources will be focused on the most important areas. Data sources: To better understand and manage the risks of PPCPs in the environment, we used the "key question" approach to identify the principle issues that need to be addressed. Initially, questions were solicited from academic, government, and business communities around the world. A list of 101 questions was then discussed at an international expert workshop, and a top-20 list was developed. Following the workshop, workshop attendees ranked the 20 questions by importance. Data synthesis: The top 20 priority questions fell into seven categories: a) prioritization of substances for assessment, b) pathways of exposure, c) bioavailability and uptake, d) effects characterization, e) risk and relative risk, f) antibiotic resistance, and g) risk management. Conclusions: A large body of information is now available on PPCPs in the environment. This exercise prioritized the most critical questions to aid in development of future research programs on the topic. ; Centro de Investigaciones del Medioambiente

Background: Over the past 10-15 years, a substantial amount of work has been done by the scientific, regulatory, and business communities to elucidate the effects and risks of pharmaceuticals and personal care products (PPCPs) in the environment. Objective: This review was undertaken to identify key outstanding issues regarding the effects of PPCPs on human and ecological health in order to ensure that future resources will be focused on the most important areas. Data sources: To better understand and manage the risks of PPCPs in the environment, we used the "key question" approach to identify the principle issues that need to be addressed. Initially, questions were solicited from academic, government, and business communities around the world. A list of 101 questions was then discussed at an international expert workshop, and a top-20 list was developed. Following the workshop, workshop attendees ranked the 20 questions by importance. Data synthesis: The top 20 priority questions fell into seven categories: a) prioritization of substances for assessment, b) pathways of exposure, c) bioavailability and uptake, d) effects characterization, e) risk and relative risk, f) antibiotic resistance, and g) risk management. Conclusions: A large body of information is now available on PPCPs in the environment. This exercise prioritized the most critical questions to aid in development of future research programs on the topic. ; Fil: Boxall, Alistair B. A. University of York; Reino Unido ; Fil: Rudd, Murray A. University of York; Reino Unido ; Fil: Brooks, Bryan W. Baylor University; Estados Unidos ; Fil: Caldwell, Daniel J. Johnson & Johnson; Estados Unidos ; Fil: Choi, Kyungho. Seoul National University; Corea del Sur ; Fil: Hickmann, Silke. Umweltbundesamt; Alemania ; Fil: Innes, Elizabeth. Health Canada; Canadá ; Fil: Ostapyk, Kim. Health Canada; Canadá ; Fil: Staveley, Jane P. Exponent; Estados Unidos ; Fil: Verslycke, Tim. Gradient; Estados Unidos ; Fil: Ankley, Gerald T. United States Environmental Protection Agency; Estados Unidos ; Fil: Beazley, Karen F. Dalhousie University Halifax; Canadá ; Fil: Belanger, Scott E. Procter And Gamble; Estados Unidos ; Fil: Berninger, Jason P. Baylor University; Estados Unidos ; Fil: Carriquiriborde, Pedro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Química. Centro de Investigaciones del Medio Ambiente; Argentina ; Fil: Coors, Anja. Ect Oekotoxikologie Gmbh; Alemania ; Fil: DeLeo, Paul C. American Cleaning Institute; Estados Unidos ; Fil: Dyer, Scott D. Procter And Gamble; Estados Unidos ; Fil: Ericson, Jon F. Pfizer Inc.; Estados Unidos ; Fil: Gagné, François. Environment Canada; Canadá ; Fil: Giesy, John P. University of Saskatchewan; Canadá ; Fil: Gouin, Todd. Unilever; Reino Unido ; Fil: Hallstrom, Lars. University of Alberta; Canadá ; Fil: Karlsson, Maja V. University of York; Reino Unido ; Fil: Joakim Larsson, D.G. University of Göteborg; Alemania ; Fil: Lazorchak, James M. United States Environmental Protection Agency; Estados Unidos ; Fil: Mastrocco, Frank. Pfizer Inc.; Estados Unidos ; Fil: McLaughlin, Alison. Health Canada; Canadá ; Fil: McMaster, Mark E. Environment Canada; Canadá ; Fil: Meyerhoff, Roger D. Eli Lilly And Company; Estados Unidos ; Fil: Moore, Roberta. Health Canada; Canadá ; Fil: Parrott, Joanne L. Environment Canada; Canadá ; Fil: Snape, Jason R. AstraZeneca UK Ltd.; Reino Unido ; Fil: Murray-Smith, Richard. AstraZeneca UK Ltd.; Reino Unido ; Fil: Servos, Mark R. University of Waterloo; Canadá ; Fil: Sibley, Paul K. University of Guelph; Canadá ; Fil: Straub, Jürg Oliver. F. Hoffmann-La Roche Ltd.; Suiza ; Fil: Szabo, Nora D. University of Ottawa; Canadá ; Fil: Topp, Edward. Agriculture Et Agroalimentaire Canada; Canadá ; Fil: Tetreault, Gerald R. University of Waterloo; Canadá ; Fil: Trudeau, Vance L. University of Ottawa; Canadá ; Fil: Van Der Kraak, Glen. University of Guelph; Canadá