15 documents found, page 1 of 2
Microbe and plant-assisted remediation of organic xenobiotics, in Handbook on A...
Pinto, Ana Paula; Lopes, Maria Elmina; Dordio, Ana; Castanheiro, JoséEnvironmental pollution with organic xenobiotics viz. polycyclic aromatic hydrocarbons (PAHs) is a worldwide problem, and the development of emerging and sustainable remediation technologies for the decontamination of impacted sites are extremely meaningful. In soils, PAHs can be subject to different processes, and can be degraded by several physical, chemical and biological processes. These compounds are gener...
Phytoremediation: An Option for Removal of Organic Xenobiotics from Water
Dordio, Ana; Carvalho, A. J. PalacePollution by persistent organic pollutants (pesticides, pharmaceuticals, petroleum hydrocarbons, PAHs, PCBs, etc.) is an environmental problem that is recognized worldwide. In order to address this problem, cost effective technologies have been developed and evaluated for the decontamination of soil and water resources. Phytoremediation is a promising technology that uses plants and the associated rhizosphere m...
How can the Functioning of Treatment Wetlands be Enhanced?
Dordio, Ana; Carvalho, A.J. PalaceWetlands have already been recognized to hold the capacity for efficiently reducing or removing large amounts of pollutants from point sources (e.g. municipal and certain industrial effluents) as well as non-point sources (e.g. mining, agricultural and urban runoff) including organic matter, suspended solids, excess of nutrients, pathogens, metals and other micropollutants. This pollutants removal is accomplish...
How Can the Functioning of Treatment Wetlands be Enhanced?
Dordio, Ana; Carvalho, A. J. PalaceWetlands have already been recognized to hold the capacity for efficiently reducing or removing large amounts of pollutants from point sources (e.g. municipal and certain industrial effluents) as well as non-point sources (e.g. mining, agricultural and urban runoff) including organic matter, suspended solids, excess of nutrients, pathogens, metals and other micropollutants. This pollutants removal is accomplish...
Phytoremediation: An Option for Removal of Organic Xenobiotics from Water
Dordio, Ana; Carvalho, A. J. PalacePollution by persistent organic pollutants (pesticides, pharmaceuticals, petroleum hydrocarbons, PAHs, PCBs, etc.) is an environmental problem that is recognized worldwide. In order to address this problem, cost effective technologies have been developed and evaluated for the decontamination of soil and water resources. Phytoremediation is a promising technology that uses plants and the associated rhizosphere m...
Study on the use of Typha spp. for the phytotreatment of water contaminated wit...
Dordio, Ana; Ferro, Raquel; Teixeira, Dora; Palace, Alfredo J.; Pinto, Ana P.; Dias, Cristina M.B.Several studies on phytotoxic effects caused by organic xenobiotics and their removal from water by macrophytes have already been performed to evaluate the usefulness of these plants for phytoremediation technologies. In this context, a study was conducted to assess Typha spp.’s ability to withstand and remove, from water, the non-steroidal anti-inflammatory drug ibuprofen. For an initial ibuprofen concentratio...
Atenolol removal in microcosm constructed wetlands
Dordio, Ana; Pinto, José; Dias, Cristina; Pinto, Ana Paula; Carvalho, Alfredo; Teixeira, DoraMicrocosm constructed wetland systems established with a matrix of light expanded clay aggregates (LECA) and Typha spp. or Phragmites australis were used to evaluate their ability to remove atenolol from wastewater. Combined with an efficient SPE concentration step, the use of HPLC-DAD yielded an analytical method for atenolol quantification with very low LOQ (9 ngmL 1) and high reproducibility (RSD54%). Overal...
Ultra-sensitive voltammetric sensor for trace analysis of carbamazepine
Veiga, Alfredina; Dordio, Ana; Carvalho, Alfredo; Teixeira, Dora; Ginja Teixeira, JorgeA multi-walled carbon nanotubes (MWCNTs) film-coated glassy carbon electrode (GCE) was used for the voltammetric determination of carbamazepine (CBZ). The results showed that this simple modified electrode exhibited excellent electrocatalytic activity towards the oxidation of CBZ. The voltammetric response of CBZ at this film-modified electrode increased significantly when compared with that at a bare glassy ca...
Removal of pharmaceuticals in microcosm constructed wetlands using Typha spp. a...
Dordio, Ana; Carvalho, Alfredo; Teixeira, Dora; Dias, Cristina; Pinto, Ana PaulaMicrocosm constructed wetlands systems established with a matrix of light expanded clay aggregates (LECA) and planted with Typha spp. were used to evaluate their ability to remove pharmaceuticals ibuprofen, carbamazepine and clofibric acid from wastewaters. Seasonal variability of these systems’ performances was also evaluated. Overall, removal efficiencies of 96%, 97% and 75% for ibuprofen, carbamazepine and c...
Evaluation of carbamazepine uptake and metabolization by Typha spp., a plant wi...
Dordio, Ana; Belo, Maria; Teixeira, Dora; Carvalho, Alfredo; Dias, Cristina; Picó, Yolanda; Pinto, Ana PaulaPhytoremediation technologies such as constructed wetlands have shown higher efficiencies in removal of pharmaceuticals from wastewaters than conventional wastewater treatment processes, and plants seem to have an important role in the removal of some of those compounds. In this context, a study was conducted to assess tolerance, uptake, and metabolism of the epilepsy drug, carbamazepine, by the macrophyte Typh...