CONTAMINATED SOIL REMEDIATION BY USING GREEN COMPOST

The adsorption behavior of Pb2+, Cu2+ and Cd2+ ions on composts has been investigated in polluted soils to understand the physicochemical process involved and to explore the potentiality of composts in soil modification. The influence of pH (2–11), contact time (1-3 weeks) and composts amount (20-80 gr) has been studied using batch mode. The ions adsorption increased with increasing contact time and dosage of composts. The binding process in strongly affected by solution pH, and the optimum pH was 3.5. The experimental data was best fitted by Langmuir isotherm. The maximum adsorption capacity of the adsorbent for mentioned ions were evaluated 8.18, 7.89 and 1.13 mmol/gr respectively.