Organic pollutant bioavailability, when sorbed on soils is a key to their environmental fate and impact. Pollutant biodegradation strongly depends on soil physico-chemical properties and soil-pollutant interactions. In another field, combined use of clays (adsorption) and degrading bacteria has been proposed as reactive barriers in remediation process. Recently, synthetic hydrotalcites (LDHs) have shown promise as sorbents for pesticides, humic substances etc. with unique physical and chemical properties [1, 2]: layered structure, varied chemical composition, layer charge density, and high anionic exchange capacity. LDHs and their calcinated products have hydrophilic, positively charged surfaces that adsorb cationic and highly polar organic pesticides well [3]. Conversely, that of hydrophobic pesticides is limited [4].
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