Phytoremediation: green technology for the removal of mixed contaminants of a water supply reservoir

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http://hdl.handle.net/10138/309778

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Calado , S L D M , Esterhuizen-Londt , M , de Assis , H C S & Pflugmacher , S 2019 , ' Phytoremediation: green technology for the removal of mixed contaminants of a water supply reservoir ' , International Journal of Phytoremediation , vol. 21 , no. 4 , pp. 372-379 . https://doi.org/10.1080/15226514.2018.1524843

Title: Phytoremediation: green technology for the removal of mixed contaminants of a water supply reservoir
Author: Calado, Sabrina Loise de Morais; Esterhuizen-Londt, Maranda; de Assis, Helena Cristina Silva; Pflugmacher, Stephan
Contributor: University of Helsinki, Environmental Sciences
University of Helsinki, Ecosystems and Environment Research Programme
Date: 2019-03-21
Language: eng
Number of pages: 8
Belongs to series: International Journal of Phytoremediation
ISSN: 1522-6514
URI: http://hdl.handle.net/10138/309778
Abstract: The Irai Reservoir, a water supply in Brazil, is constantly impacted by anthropogenic activities such as waste inputs from agriculture, hospitals and urbanization, resulting toxic cyanobacterial blooms causing economic, social and environmental problems. This study assessed the concentration of some common contaminants of the Irai Reservoir, namely paracetamol, diclofenac and microcystin-LR and tested whether a laboratory scale Green Liver System (R) would serve as a suitable technology to remove these contaminants. Further, the study investigated whether the pollutants caused adverse effects to the macrophytes using catalase as a biomarker for oxidative stress and investigated whether biotransformation (glutathione S-transferase) was a main route for detoxification. Egeria densa, Ceratophyllum demersum and Myriophyllum aquaticum were exposed to a mixture of the three contaminants for 14 days in a concentration range similar to those detected in the reservoir. The plants removed 93% of diclofenac and 100% of MC-LR after 14 days. Paracetamol could not be detected. Catalase and glutathione S-transferase enzyme activities remained unaltered after the 14-day exposure, indicating that the mixture did not cause oxidative stress. The study showed that the aquatic macrophytes used are suitable tools to apply in a Green Liver System (R) for the remediation of mixed pollutants.
Subject: 1183 Plant biology, microbiology, virology
Aquatic macrophytes
diclofenac
Green Liver System (R)
Microcystin-LR
paracetamol
phytoremediation
OXIDATIVE STRESS
CERATOPHYLLUM-DEMERSUM
EGERIA-DENSA
MC-LR
DICLOFENAC
MICROCYSTIN
PARACETAMOL
LIVER
EXPOSURE
BIOTRANSFORMATION
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