Phytoremediation studies on contaminated soils of some industrial areas of Visakhapatnam, A.P.
Author(s):
T. Chandra Sekhar, Dr. B. Sateesh Kumar, V. Luke Paul, Dr. G.V.S.R Pavan Kumar
Keywords:
Heavy metals, Phytoremediation, Enrichment coefficient
Abstract
Elemental analyses of the soil samples collected from eight different industrial sites of Visakhapatnam revealed varying concentrations of heavy metals. Among the soil samples tested samples of Hindustan Zinc Ltd. ( HZL) contained highest concentrations of Zinc, Lead, Copper Cadmium, Arsenic andChromium visa vis other soil samples tested. The relative metal concentrations in HZL site were found in the following order Zn=8030 > Pb = 6960 > Cu=292 > Cd=221 > As=111 > Cr=108. Nonetheless, other soil samples collected from industrial regions of Parrysugar, Essar, HPCL, Coramandel, Pharmacity and Govada sugar factory also contained more than one metal in higher concentrations i.e. above acceptable levels. Enrichment coefficient data reveal that the efficacy of hyper accumulation of metals in in-situ weed species was in the following order Alternanthera sessilis > Cynodon dactylon > Tridax procumbens > Datura stramonium > Catheranthes roseus whereas, Brassica nigra lead the list among ex-situ weeds followed by Datura metel > Pisum sativum > Ipomia cornia.
Article Details
Unique Paper ID: 156778

Publication Volume & Issue: Volume 9, Issue 5

Page(s): 828 - 833
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