IDEA #8DLGRD The application of Phytoremediation for DDTs polluted site decontamination

INSTITUTE OF GEOLOGY AND SEISMOLOGY OF THE ACADEMY OF SCIENCES OF MOLDOVA The application of Phytoremediation for DDTs polluted site decontamination Areas of Application An environmental friendly technology was devel- oped for the polluted site remediation. Proposed technology is a development of EPA method of phytoremediation. Zucchini and pumpkin showed good results in Moldova conditions for the im- plementation of phytoremediation technology for POPs removal from soil. Local wild plants can be used also for this purpose in complex with culti- vated plants. These approaches will give better results in complex utilization with other biotech- nology (microbiological destruction). Stage of Development Tested, available for demonstration – field tested Certificate of accreditation by ISO 17025 nr. SNA MD CAECP LI 02 211 Description The main scientific directions are study of the geol- ogy and geophysics conditions of the Republic of Moldova. Environmental geochemistry of persistent organic pollutants, petrol pollutants (PAHs, BTEX etc.), and heavy metals are principal study topics of institute for water quality and environmental risk assessments, implementation of site remediation technologies. Investigation of the destructive geo- logical phenomena also is in the filed of scientific interest of institute for sustainable development of the country and minimization of negative impact of different pollutants on environmental quality and public health. Institute possesses sufficient labora- tory capabilities and experience for analytical work by the environmental investigation: determination of chlororganic pesticides, polichlorbiphenyls (PCBs) polyaromatic hydrocarbons (PAHs), BTEX; Identification of compounds in different objects by Gas Chromatography – Mass Spectrometry; analysis of toxic elements (As, Se, Hg, Pb, Cd, Cu, Zn, Ni, Cr, Al, Mn, Fe, V, Si etc.) in natural and technologi- cal waters, foods, agriculture crops, soils, sediments, sewage sludge, metals and alloys. Innovative Aspect and Main Advantages The methodology for the inventory of POPs pol- luted areas, Environmental Risk Assessment proce- dure and phytoremediation technology in Moldova conditions was elaborated. The phytoremediation experiment was designed using five plant species: corn (Zea mays L.), zucchini (Cucurbita pepo L. subsp. pepo), pumpkin (C. pepo L. subsp. pepo), carrot (Daucus carota L.subsp. sativus (L.) Schübler & G.Martens.), and sorghum (Sorghum bicolor L. Moench). The principal plant parts were analyzed for the assessment of pesticide accumulation (roots, steam, leaves, crop). Conclusion is that old pesticide storages with a relative high level of POPs pollution can be cleaned by the phytoremediation technology. It needs individual design for every lot in view of local conditions. Investigators should take into con- sideration all advantages and limitations of this technology and use it in complex with other bio- technology such as phytohormone for more effective POPs destruction