The Application of Solar Cells in the Electrokinetic Remediation of Metal Contaminated Sediments.

  In this study, solar cells were used to generate an electric field for the electrokinetic remediation of metal contaminated sediment (Nickel, Cadmium, Zinc). For determination of metals mobility, bioavailability and potential toxicity, sequential extraction procedure, simultaneously extracted metals (SEM) and acid-volatile sulphide ratios (AVS) were performed before, during and after treatment.After 21 days of treatment, 63% Ni, 82% Cd and 58% Zn was removed from the anode region.

Use of fly ash for remediation of metals polluted sediment--green remediation.

The aim of this study was to determine the possibility of using fly ash and combination of kaolinite and fly ash for the solidification/stabilization (S/S) of Ni and Zn contaminated sediment from the Krivaja river basin (Serbia), which represents an extraordinary risk to the environment and belongs to the last quality class in the Serbian sediment classification. Fly ash was used as a stabilising agent because it occurs as a secondary industrial product, so in this way two types of waste are immobilized. Microwave assisted BCR sequential extraction procedure was employed to assess potential of Ni and Zn mobility and risk to the aquatic environment.