Green Liver Systems® for Water Purification: Using the Phytoremediation Potential of Aquatic Macrophytes for the Removal of Different Cyanobacterial Toxins from Water

Author(s) :Stephan Pflugmacher, Sandra Kühn, Sang-Hyup Lee, Jae-Woo Choi, Seungyun Baik, Kyu-Sang Kwon, Valeska Contardo-Jara

Difference between conventional wetland systems and the newly developed Green Liver System® using the cyanobacterial toxin microcystin-LR as an example. The production of metabolites [5] from MC-LR with unknown toxicity in conventional wetlands by bacterial biofilms is the main difference, as in the Green Liver System the metabolisation is performed within the plant cells, with no release of metabolites into the surrounding water body.
The protection and reasonable use of freshwater is one of the main goals for our future, as water is most important for all organisms on earth including humans. Due to pollution, not only with xenobiotics, but also with nutrients, the status of our water bodies has changed drastically. Excess nutrient load induces eutrophication processes and, as a result, massive cyanobacterial blooms during the summer times. As cyanobacteria are known to produce several toxic secondary metabolites, the so-called cyanotoxins
, exhibiting hepato-, neuro- and cell-toxicity, a potential risk is given, when using this water. There is an urgent need to have a water purification system, which is able to cope with these natural toxins. Using aquatic plants as a Green Liver, the Green Liver System?, was developed, able to remove these natural pollutants. To test the ability of the Green Liver System?, several cyanobacterial toxins including artificial and natural mixtures were tested in a small-scale laboratory system. The results showed that within 7 – 14 days a combination of different aquatic macrophytes was able to remove a given toxin amount (10 μg·L-1) by 100%. The phytoremediation technology behind the Green Liver Systems? uses the simple ability of submerged aquatic plants to uptake, detoxify and store the toxins, without formation and release of further metabolites to the surrounding water.


Journal: American Journal of Plant Sciences
DOI: 10.4236/ajps.2015.69161 (PDF)
Paper Id: 57519 (metadata)

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