Phytoremediation Potential of Some Macrophytes from a Car Wash Stream in Buea, South Western Cameroon

Autor:	Godlove Ambe Neba, Neculina Anyinkeng, Afui Mathias Mih, Aaron Suh Tening
Rok vydání:	2020
Předmět:	Cadmium biology Ludwigia peruviana chemistry.chemical_element Zinc biology.organism_classification Vallisneria spiralis Macrophyte Anubias barteri Metal Phytoremediation chemistry Environmental chemistry visual_art visual_art.visual_art_medium
Zdroj:	Journal of Environmental Protection. 11:1052-1063
ISSN:	2152-2219 2152-2197
DOI:	10.4236/jep.2020.1112066
Popis:	Phytoremediation is a cheap and environmentally friendly technique in which green plants in situ are used to clean the soil, sediments and water of heavy metals. This study investigated the phytoremediation potential of six naturally occurring macrophytes from Nange (a stream in Buea municipality where cars have been driven into and washed for over 20 years). Plant samples were collected before and after car wash, then analysed for copper, zinc, lead and cadmium accumulation. There was an increase in concentration of all the four heavy metals in water after carwash point, with Zn having the highest concentration (0.27 mg/L). Mean concentration of the heavy metals in the water showed that Zn and Pb had the highest concentrations (0.24 mg/L each) while the least concentration was obtained in Cu (0.12 mg/kg). Heavy metal concentrations in the sediments were higher after car wash point than before. Cadmium had the highest concentration (5.58 mg/kg) while Cu had the least (0.75 mg/kg). Ludwigia peruviana had the highest BAFs for all the heavy metals (22.95 for Cu, 33.41 for Zn, 21.79 for Pb and 7.85 for Cd). Species with the leasts were: Anubias barteri for Cu (7.16), Polygonum persicaria for Zn (14.28), Rorippa nasturtium-aquaticum for Pb (11.60) and Vallisneria spiralis for Cd (1.98). L. peruviana had the highest BAC values (Cu = 10.11, Zn = 14.73, Pb = 11.39, Cd = 3.85) and BCF values (Cu = 12.84, Zn = 18.67, Pb = 10.40, Cd = 4.00). A. barteri had the highest TF (Cu = 1.49, Zn = 1.27, Cd = 1.99) except for Pb where both A. barteri and L. peruviana each had a TF of 1.10. While all the six plants were found to be good accumulators of the heavy metals, L. peruviana showed remarkable efficiency indicating that the species is a good candidate for cleaning such environments.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d8e65240425888778b7f1b3c6c03a09e https://doi.org/10.4236/jep.2020.1112066 Zobrazit plný text záznamu