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Phytoremediation potential of Eichhornia crassipes for the treatment of
cadmium in relation with biochemical and water parameters

Aditi R. Borker1
, Ashish V. Mane1*
, Ganesh D. Saratale2,3* and Girish R. Pathade4.

Abstract
The present investigation was aimed to assess the effect of cadmium chloride on some biochemical parametersand the potential of cadmium uptake of Eichhornia crassipes. The effects of increasing concentrations ofcadmium chloride on growth characteristics of E. crassipes including root length, leaf area and biomassproduction was studied. The root growth of E. crassipes was severely affected at all concentrations of cadmiumin the trays where plants were grown and in general it was serially increased. Similar trend was observed inaverage leaf area with 11.28 cm2 on 12th day in control while with only 7.05 cm2 at 75 ppm concentration.Chlorophyll contents were also observed to be decreased serially with the increasing concentrations of CdCl2.The lowest total chlorophylls were 118.56 mg/100g in comparison with 239.09 mg/100g in control set at theend of treatment. Polyphenol and proline contents were increased indicating the stress conditions due to toxicityof cadmium. Highest polyphenol and proline were 303.27 mg/100g and 8.14 mg/100g respectively at 50 ppmset of the treatment. Moreover, Electrical conductivity and total dissolved solids content of the various dilutionswere decreased remarkably after 12 days of treatment. pH of the solution tend to become neutral while increasein turbidity might be related with root exudates and dead organics by the plants growing in the tray whereasdecrease in hardness, acidity, sodium and potassium content was observed with increase in concentration.Values for BOD and COD were slightly increased at the end of treatment. Estimation of bioconcentration factoris very much important. It indicates that the species is more favourable to tolerate higher concentrations ofheavy metals and also helps a lot in decontamination of the land, water etc. In this study increasingconcentration of cadmium showed higher accumulation capacities and may be better treatment option forcadmium by means of phytoremediation

Key words: Phytoremediation, Bioconcentration factor, Biochemical parameters, Physico-chemical parameters,
Heavy metals, Wastewater



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