PHYTORREMEDIATION IN BODIES OF WATER CONTAMINATED BY HEAVY METALS
Journal Title: Innova Biology Sciences - Year 2021, Vol 1, Issue 1
Abstract
This article compiles information on phytoremediation techniques in water bodies by different plant species, their accumulation of heavy metals, advantages and disadvantages, based on various research studies. A bibliometric search was carried out in three databases and in the Zotero referer. The search yielded a total of 90 articles, of which 61 were validated, however, only 43 were cited, taking into account both the relevance of the area and the theme. It was found that aquatic plants, to develop, are capable of capturing metals through various mechanisms, among which are: phytovolatilization and phytoextraction, carried out through their aerial part; rhizofiltration and phytostabilization, carried out from the root to the bottom; phytofiltration, which is another mechanism for treating wastewater by macrophytes and uprooted from hydroponic crops that are then relocated to aqueous streams. The rapid growth rate and tolerance capacity will depend on the species, temperature and pH for the bioaccumulation of metals. Lantana camara can remove up to 88.93% of Pb, Cyperus alternifolius has absorption levels of Zn (5%), Cd (6%), Al (13%) and Pb (14%). The Unguiculated V absorbs 72% of Cu ions and 92% of Cd ions. The advantage is the cleaning power at low cost, it does not use dangerous chemical reagents nor does it affect the structure of the water. It is carried out in the affected place, therefore, it is an ecological technique that is friendly to the environment.
Authors and Affiliations
Maria Santos Pedraza Guevara
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