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Peter Schroder - One of the best experts on this subject based on the ideXlab platform.
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uptake translocation and possible biodegradation of the antidiabetic agent metformin by hydroponically grown Typha latifolia
Journal of Hazardous Materials, 2016Co-Authors: Peter SchroderAbstract:Abstract The increasing load of pharmaceutical compounds has raised concerns about their potential residues in aquatic environments and ecotoxicity. Metformin (MET), a widely prescribed antidiabetic II medicine, has been detected in high concentration in sewage and in wastewater treatment effluents. An uptake and translocation study was carried out to assess the ultimate fate of MET in phytoremediation. MET was removed from media by Typha latifolia , and the removal processes followed first order kinetics. After 28 days, the removal efficiencies were in a range of 74.0 ± 4.1–81.1 ± 3.3%. In roots, MET concentration was increasing during the first two weeks of the experiment but thereafter decreasing. In contrast, MET concentration was continuously increasing in rhizomes and leaves. Bioaccumulation of MET in roots was much higher than in leaves and rhizomes. As degradation product of metformin in the plant, methylbiguanide (MBG) was detected whereas guanylurea was undetectable. Moreover, MBG concentration in roots was increasing with exposure time. An enzymatic degradation experiment showed the degradation rate followed the order of MET
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uptake translocation and possible biodegradation of the antidiabetic agent metformin by hydroponically grown Typha latifolia
Journal of Hazardous Materials, 2016Co-Authors: Hao Cui, Peter SchroderAbstract:The increasing load of pharmaceutical compounds has raised concerns about their potential residues in aquatic environments and ecotoxicity. Metformin (MET), a widely prescribed antidiabetic II medicine, has been detected in high concentration in sewage and in wastewater treatment effluents. An uptake and translocation study was carried out to assess the ultimate fate of MET in phytoremediation. MET was removed from media by Typha latifolia, and the removal processes followed first order kinetics. After 28 days, the removal efficiencies were in a range of 74.0±4.1-81.1±3.3%. In roots, MET concentration was increasing during the first two weeks of the experiment but thereafter decreasing. In contrast, MET concentration was continuously increasing in rhizomes and leaves. Bioaccumulation of MET in roots was much higher than in leaves and rhizomes. As degradation product of metformin in the plant, methylbiguanide (MBG) was detected whereas guanylurea was undetectable. Moreover, MBG concentration in roots was increasing with exposure time. An enzymatic degradation experiment showed the degradation rate followed the order of MET
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short term uptake and transport process for metformin in roots of phragmites australis and Typha latifolia
Chemosphere, 2015Co-Authors: H Cui, Burkhard A Hense, Johannes Muller, Peter SchroderAbstract:Abstract Metformin (MET) as an emerging contaminant has been detected in surface water and wastewater in numerous countries, due to insufficient retention in classical waste water treatment plants. In order to characterize the uptake of the compound during phytotreatment of waste water, a short term Pitman chamber experiment was carried out to assess the characteristics of MET uptake and transport by roots. Three different concentrations (0.5, 1.0 and 2.0 mmol L−1) were applied to cattail (Typha latifolia) and reed (Phragmites australis) roots which were used to investigate the uptake mechanism because they are frequently utilized in phytoremediation. In addition, quinidine was used as an inhibitor to assess the role of organic cation transporters (OCTs) in the uptake of MET by T. latifolia. The transport process of MET is different from carbamazepine (CBZ) and caffeine (CFN). In both T. latifolia and P. australis, the uptake processes were independent of initial concentrations. Quinidine, a known inhibitor of organic cation transporters, can significantly affect MET uptake by T. latifolia roots with inhibition ratios of 70–74%. Uptake into the root could be characterized by a linear model with R2 values in the range of 0.881–0.999. Overall, the present study provides evidence that MET is taken up by plant roots and has the potential for subsequent translocation. OCTs could be one of the important pathways for MET uptake into the plant.
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uptake and metabolism of diclofenac in Typha latifolia how plants cope with human pharmaceutical pollution
Plant Science, 2014Co-Authors: Bernadett Bartha, Christian Huber, Peter SchroderAbstract:The fate of pharmaceuticals in our environment is a very important issue for environmental and health research. Although these substances have been detected in environmental compartments in low concentration until now, they will pose considerable environmental risk to ecosystems, animals and human due to their biological activity. Alternative plant based removal technologies that make use of some potential wetland species like Phragmites or Typha within traditional wastewater treatment plants have to be established to cope with this "new generation" of pollutants. We investigated uptake and translocation of diclofenac (1mgl(-1)) in the macrophyte Typha latifolia L. during one week exposure in greenhouse experiments. Detoxification products and involved key enzymatic processes were identified. We also examined the oxidative stress induced by the treatment and the defense capacity of the plants. Rapid uptake and effective metabolism were observed, where glycoside and glutathione conjugates represent dominant metabolites. Up to seven-fold induction of glycosyltransferase activity was observed in roots, but not in shoots. Glutathione S-transferase activity was also induced, but to a lower extent. The activity changes of defense enzymes points to oxidative stress in the plants. Our results show that human pharmaceuticals can be metabolized by plants similar to xenobiotics, but that similarities to human metabolism are limited.
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root exudation pattern of Typha latifolia l plants after copper exposure
Plant and Soil, 2013Co-Authors: Lyudmila Lyubenova, Arnd J Kuhn, Agnes Holtkemeier, Peter SchroderAbstract:Typha latifolia L. is an aquatic plant that has been widely exploited for the aims of phytoremediation. The main reason why we have chosen this plant species for the current study is its capacity to accumulate and detoxify heavy metals. The main topic of the investigation focused on the root uptake of copper (II) nitrate and copper (II) sulfate and the impact of different chemical copper species on the excreted organic acids. Oxalic, malic, acetic and lactic acids were determined using capillary electrophoresis; a comparison between the concentration and the time course during 7 days of treatment was performed. There is a correlation between the total copper (II) sulfate concentration in the roots and the total amount of the excreted organic acids. In addition to that organic acids are involved in the detoxification mechanisms of Typha latifolia for copper (II) nitrate and copper (II) sulfate. Different from so far investigated plant species the highest amounts of organic acids are excreted from T. latifolia roots not in the first hours after treatment, but up to 7 days later.
Paula M L Castro - One of the best experts on this subject based on the ideXlab platform.
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feasibility of Typha latifolia for high salinity effluent treatment in constructed wetlands for integration in resource management systems
International Journal of Phytoremediation, 2014Co-Authors: Joao M Jesus, Cristina S C Calheiros, Paula M L Castro, Mariateresa BorgesAbstract:High salinity wastewaters have limited treatment options due to the occurrence of salt inhibition in conventional biological treatments. Using recirculating marine aquaculture effluents as a case study, this work explored the use of Constructed Wetlands as a treatment option for nutrient and salt loads reduction. Three different substrates were tested for nutrient adsorption, of which expanded clay performed better. This substrate adsorbed 0.31 mg kg−1 of NH4 +−N and 5.60 mg kg−1 of PO4 3−−P and 6.9 mg kg−1 dissolved salts after 7 days of contact. Microcosms with Typha latifolia planted in expanded clay and irrigated with aquaculture wastewater (salinity 2.4%, 7 days hydraulic retention time, for 4 weeks), were able to remove 94% NH4 +−N (inlet 0.25 ± 0.13 mg L−1), 78% NO2 −−N (inlet 0.78 ± 0.62 mg L−1), 46% NO3 −−N (inlet 18.83 ± 8.93 mg L−1) whereas PO4 3−−P was not detected (inlet 1.41 ± 0.21 mg L−1). Maximum salinity reductions of 52% were observed. Despite some growth inhibition, plants remained viab...
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treatment of industrial wastewater with two stage constructed wetlands planted with Typha latifolia and phragmites australis
Bioresource Technology, 2009Co-Authors: Cristina S C Calheiros, Antonio O S S Rangel, Paula M L CastroAbstract:Industrial wastewater treatment comprises several processes to fulfill the discharge permits or to enable the reuse of wastewater. For tannery wastewater, constructed wetlands (CWs) may be an interesting treatment option. Two-stage series of horizontal subsurface flow CWs with Phragmites australis (UP series) and Typha latifolia (UT series) provided high removal of organics from tannery wastewater, up to 88% of biochemical oxygen demand (BOD(5)) (from an inlet of 420 to 1000 mg L(-1)) and 92% of chemical oxygen demand (COD) (from an inlet of 808 to 2449 mg L(-1)), and of other contaminants, such as nitrogen, operating at hydraulic retention times of 2, 5 and 7 days. No significant (P<0.05) differences in performance were found between both the series. Overall mass removals of up to 1294 kg COD ha(-1)d(-1) and 529 kg BOD(5)ha(-1)d(-1) were achieved for a loading ranging from 242 to 1925 kg COD ha(-1)d(-1) and from 126 to 900 kg BOD(5)ha(-1)d(-1). Plants were resilient to the conditions imposed, however P. australis exceeded T. latifolia in terms of propagation.
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substrate effect on bacterial communities from constructed wetlands planted with Typha latifolia treating industrial wastewater
Ecological Engineering, 2009Co-Authors: Cristina S C Calheiros, Anouk F Duque, Alexandra Moura, Isabel Henriques, Antonio Correia, Antonio O S S Rangel, Paula M L CastroAbstract:Abstract Constructed wetlands (CWs) have been recognized as being able to effectively treat wastewater from municipal and industrial sources. This study focused on the effect of different substrates and long-term operation of horizontal subsurface flow CWs treating tannery wastewater on the bacterial communities. The CWs were planted with Typha latifolia in three types of substrate: two units with different types of expanded clay aggregates and one unit with fine gravel. Another unit with expanded clay was left unvegetated. Changes in the bacterial community related to the type of substrate, different hydraulic loading rates and along CW operation were examined using denaturating gradient gel electrophoresis (DGGE). Bacterial enumeration was also performed and several bacterial isolates were retrieved from the CWs. Phylogenetic affiliations of those isolates were obtained on the basis of 16S rRNA gene sequences and revealed that they were closely related to the genera Bacillus (TM1S1, TM1R3, TNR1 and TAR1), Paracoccus (TM1R2), Pseudomonas (TM1R1) and Halomonas (TM1S2). The type of substrate and the presence of T. latifolia had a major effect on the species richness and the structure of bacterial communities as inferred by numerical analysis of DGGE profiles.
Cristina S C Calheiros - One of the best experts on this subject based on the ideXlab platform.
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feasibility of Typha latifolia for high salinity effluent treatment in constructed wetlands for integration in resource management systems
International Journal of Phytoremediation, 2014Co-Authors: Joao M Jesus, Cristina S C Calheiros, Paula M L Castro, Mariateresa BorgesAbstract:High salinity wastewaters have limited treatment options due to the occurrence of salt inhibition in conventional biological treatments. Using recirculating marine aquaculture effluents as a case study, this work explored the use of Constructed Wetlands as a treatment option for nutrient and salt loads reduction. Three different substrates were tested for nutrient adsorption, of which expanded clay performed better. This substrate adsorbed 0.31 mg kg−1 of NH4 +−N and 5.60 mg kg−1 of PO4 3−−P and 6.9 mg kg−1 dissolved salts after 7 days of contact. Microcosms with Typha latifolia planted in expanded clay and irrigated with aquaculture wastewater (salinity 2.4%, 7 days hydraulic retention time, for 4 weeks), were able to remove 94% NH4 +−N (inlet 0.25 ± 0.13 mg L−1), 78% NO2 −−N (inlet 0.78 ± 0.62 mg L−1), 46% NO3 −−N (inlet 18.83 ± 8.93 mg L−1) whereas PO4 3−−P was not detected (inlet 1.41 ± 0.21 mg L−1). Maximum salinity reductions of 52% were observed. Despite some growth inhibition, plants remained viab...
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treatment of industrial wastewater with two stage constructed wetlands planted with Typha latifolia and phragmites australis
Bioresource Technology, 2009Co-Authors: Cristina S C Calheiros, Antonio O S S Rangel, Paula M L CastroAbstract:Industrial wastewater treatment comprises several processes to fulfill the discharge permits or to enable the reuse of wastewater. For tannery wastewater, constructed wetlands (CWs) may be an interesting treatment option. Two-stage series of horizontal subsurface flow CWs with Phragmites australis (UP series) and Typha latifolia (UT series) provided high removal of organics from tannery wastewater, up to 88% of biochemical oxygen demand (BOD(5)) (from an inlet of 420 to 1000 mg L(-1)) and 92% of chemical oxygen demand (COD) (from an inlet of 808 to 2449 mg L(-1)), and of other contaminants, such as nitrogen, operating at hydraulic retention times of 2, 5 and 7 days. No significant (P<0.05) differences in performance were found between both the series. Overall mass removals of up to 1294 kg COD ha(-1)d(-1) and 529 kg BOD(5)ha(-1)d(-1) were achieved for a loading ranging from 242 to 1925 kg COD ha(-1)d(-1) and from 126 to 900 kg BOD(5)ha(-1)d(-1). Plants were resilient to the conditions imposed, however P. australis exceeded T. latifolia in terms of propagation.
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substrate effect on bacterial communities from constructed wetlands planted with Typha latifolia treating industrial wastewater
Ecological Engineering, 2009Co-Authors: Cristina S C Calheiros, Anouk F Duque, Alexandra Moura, Isabel Henriques, Antonio Correia, Antonio O S S Rangel, Paula M L CastroAbstract:Abstract Constructed wetlands (CWs) have been recognized as being able to effectively treat wastewater from municipal and industrial sources. This study focused on the effect of different substrates and long-term operation of horizontal subsurface flow CWs treating tannery wastewater on the bacterial communities. The CWs were planted with Typha latifolia in three types of substrate: two units with different types of expanded clay aggregates and one unit with fine gravel. Another unit with expanded clay was left unvegetated. Changes in the bacterial community related to the type of substrate, different hydraulic loading rates and along CW operation were examined using denaturating gradient gel electrophoresis (DGGE). Bacterial enumeration was also performed and several bacterial isolates were retrieved from the CWs. Phylogenetic affiliations of those isolates were obtained on the basis of 16S rRNA gene sequences and revealed that they were closely related to the genera Bacillus (TM1S1, TM1R3, TNR1 and TAR1), Paracoccus (TM1R2), Pseudomonas (TM1R1) and Halomonas (TM1S2). The type of substrate and the presence of T. latifolia had a major effect on the species richness and the structure of bacterial communities as inferred by numerical analysis of DGGE profiles.
Salcedo Recalde, Evelyn Lizeth - One of the best experts on this subject based on the ideXlab platform.
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Evaluación de concentración de plomo y cromo en poblaciones de Typha latifolia en la laguna de Yahuarcocha
2019Co-Authors: Salcedo Recalde, Evelyn LizethAbstract:Evaluar la concentración de plomo (Pb) y cromo (Cr) en poblaciones de Typha latifolia en la Laguna de Yahuarcocha.Las actividades humanas que se desarrollan en los ecosistemas acuáticos como lagos alto andinos han generado un deterioro en la cantidad y calidad de agua de los mismos. El presente estudio se ejecutó en la Laguna de Yahuarcocha, en las dos épocas del año, seca y lluviosa. El objetivo de esta investigación fue evaluar la concentración de plomo y cromo en las poblaciones de Typha latifolia presentes en la laguna. Se realizaron salidas de campo por las riveras para identificar los sitios donde se encuentra la mayor densidad de poblaciones de la especie. En el estudio se georreferenció y se aplicó el índice de vegetación NDVI, utilizado para determinar la densidad de vegetación de las especies Typha latifolia y Schoenoplectus californicus. Para la cuantificación de metales se realizó la extracción de la raíz en los sitios seleccionados, las muestras fueron procesadas y analizadas en un espectrofotómetro modalidad horno de grafito para la determinación de concentración de Pb y Cr. Además, se obtuvo encuestas de los pobladores de San Miguel de Yahuarcocha. Se registró un análisis FODA para conocer el estado actual de la especie. Se obtuvo una alta densidad de vegetación en época lluviosa en el sitio uno ubicado en la planta de tratamiento con un valor de 0,6579, la mayor concentración de metales en la raíz fue en época seca para plomo con un valor de 4,70 ppm. No existieron diferencias significativas en la absorción de T. latifolia en ninguno de los sitios que se realizó la colecta de las raíces. Con los resultados obtenidos se propuso estrategias de conservación de la especie en la laguna mediante una guía de manejo sustentable de la especie.Ingenierí
Méndez Perugachi, Johana Patricia - One of the best experts on this subject based on the ideXlab platform.
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Determinación de las concentraciones de plomo y cromo asociados a poblaciones de Typha latifolia en la laguna de Yahuarcocha, provincia de Imbabura
2020Co-Authors: Benavides Valenzuela, Fernanda Lizbeth, Méndez Perugachi, Johana PatriciaAbstract:Determinar la concentración de plomo y cromo en; suelo, sedimentos y agua asociados a poblaciones de Typha latifolia en la Laguna Yahuarcocha.Los metales pesados se encuentran entre los contaminantes ambientales más significativos, debido a su toxicidad y tendencia a acumularse en los sistemas acuáticos. En la presente investigación se evaluó la concentración de cromo y plomo en suelo, sedimentos y agua asociados a poblaciones de Typha latifolia en la Laguna Yahuarcocha en época seca y lluviosa. El muestreo se realizó en cinco puntos con tres repeticiones cada uno, ubicados en: 1) planta de tratamiento, 2) pista pequeña, 3) estación de bomberos, 4) junto a los kayac, 5) salida de la laguna. Se realizaron dos muestreos, se aplicó RI en sedimentos y suelo obteniendo como resultado que la concentración de plomo y cromo se categoriza dentro del rango de baja toxicidad con una valor de (RI < 150). Al comparar las concentraciones en sedimentos con ISQG y PEL se determinó que plomo superó en las dos épocas los estándares permisibles, con un valor de (133,09ppm) en época seca y (93,18ppm) en época lluviosa, mientras que cromo no superó el valor en ninguna de las dos épocas. En base a la comparación de concentraciones de cromo y plomo en suelo, resultó que plomo superó en época seca y lluviosa a la Normativa Ecuatoriana, más no a ECA. Por otro lado la concentración de cromo superó a los límites establecidos por ECA. En el caso de la comparación de cromo y plomo en agua se comprobó que los metales en estudio no superan los valores establecidos en ninguna época. Finalmente, se establecieron lineamientos de muestreo en agua, suelo y sedimentos lo cual constituirá una herramienta útil para muestreos posteriores en otros cuerpos de agua.Ingenierí
