Recebido em 10/2/09; aceito em 7/10/09; publicado na web em 11/3/10 EVALUATING SURFACTANT PERFORMANCE AS SOLUBILIZER OF NON-AQUEOUS PHASE LIQUIDS WITHIN AQUEOUS MEDIA. The presence of non-aqueous phase liquids (NAPLs) in the subsurface is a threat to public health as well as a serious environmental issue. NAPLs may remain adsorbed or form lenses floating on aquifers causing long-term contaminations. Surfactants may increase NAPLs solubility, enhancing the pump-and-treatment performance. Size, shape, hydration and ionization degree of the micelles define the affinity and the space available for the solubilization of a particular contaminating agent. The tests carried out at laboratory scale, taking into account the NAPL to be removed and the medium characteristics were useful to select surfactants and evaluate their efficiency as NAPLs solubilizers.

Remoção dos interferentes endócrinos 17 -etinilestradiol, 17estradiol e 4-nonilfenol por adsorção em carvão ativado em pó em água de abastecimento público