Bioremediation of tannery effluent by using Pseudomonas fluorescens and Eichhornia crassipes and its effect on Wheat seed germination and plant growth

Tannery industries discharge a large quantity of toxic substances like chromium, sodium sulphide, sodium carbonate, ammonium sulphate and chlorides in their effluent, which manifold soil pollution and affect on seed germination and plant growth. In this study, two investigational systems are attempted: i) tannery effluent was treated by aerobic bacteria Pseudomonas fluorescens and aquatic macrophyte Eichhornia crassipes and ii) the impact of treated and untreated effluent and soil on seed germination and plant growth were studied. The physicochemical properties such as color, pH, COD, BOD, total solids, suspended solids, dissolved solids, and chromium concentration were found decreased in effluent that treated with bacterial strain for 72 h and Water hyacinth for 20 days. These treated effluent also significantly enhanced chlorophyll content, and biomass production over other of wheat plant. The results revealed that effluent treated by microbes and plant has no negative impact on the seed germination and plant growth. Thus, it can be effectively used for irrigation

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Not AvailableAn experiment was conducted to evaluate the phytoremediation potential of Eichornia crassipes exposed to different dilutions (i.e., 25%, 50% and 75%) of brass and electroplating industry effluent. A supporting experiment was also conducted in parallel with synthetic binary and single metal solutions of Cd and Cr to assess their impact on growth of plants. The maximum removal of heavy metals was observed under 50% dilution effluent (i.e., 89% for Cd and 87% for Cr) followed by 75% (i.e. 81% for Cd and 77% for Cr) and 25% (i.e. 51% for Cd and 50% for Cr) dilutions. Richard’s model fitted to shoot growth data showed highest growth and rate in 50% diluted effluent (k=0.372; Kc=0.49 for Cd and 0.45 for Cr). The study suggested that E. crassipes can be a good plant species for remediation of water bodies moderately contaminated with brass and electroplating industry effluent.Not Availabl