Distribution of Se and its species in Myriophyllum spicatum and Ceratophyllum demersum growing in water containing se (VI)

Bentonite modification with hexadecylpyridinium and aluminum polyoxy cations and its effectiveness in Se(IV) removal

“…Selenite, selenate and selenomethionine are among the most acutely toxic selenium compounds (SCF/CS/NUT/UPPLEV/25 2000). The oxidized forms of Se, the selenite and selenate are the most soluble and predominating forms in natural water systems where they are more available for plants and potentially toxic to aquatic organisms (Gibson et al, 2012;Mechora et al, 2011). For these reasons, selenium should be removed from the environment.…”

The Use of Water Plants in Biomonitoring And Phytoremediation of Waters Polluted with Heavy Metals

“…Macrophyte Ceratophyllum demersum kept in selene solution with concentration of 0.13 mmol/dm 3 , after 31 days sorbed 0.0062 ±0.0011 mmol/g d.m., whereas Myriophyllum spicatum after 13 days sorbed 0.0027 ±0.0001 mmol/g d.m. of the analyte [33]. In other studies, Ceratophyllum demersum, after 24 h in arsenic solution with initial concentration of 0.04 mmol/dm 3 sorbed 0.003 mmol/g d.m.…”

Novel bioremediation processes for treatment of seleniferous soils and sediment

“…For removing Se, aquatic plants have been mostly studied at the laboratory scale, with nutrient solutions containing only Se, either as SeO3 2or SeO4 2- (Mechora et al, 2011, Mechora et al, 2015. Carvalho and Martin (2001) (Figure 5.1a).…”

“…Aquatic plants can also take up and accumulate heavy metals in their tissues (Marchand et al, 2010). Recent studies have shown that aquatic plants are also able to remove and take up Se from solutions as either SeO3 2or SeO4 2- (Mechora et al, 2011). Thus, application of phytoremediation using aquatic plants for removing metals from seleniferous soil leachate would lead to development of a sustainable process for remediation of Se-contaminated soils.…”