Abstract. The scientific community has focused many research efforts to find natural materials suitable for the most efficient purification of wastewater. Our contribution deals with removing organic contaminants based on the exploitation of the natural properties of clay and organo-clay materials. Two raw clayey materials (MIC and NC) were collected from the Basilicata region (South Italy), and another one was a Wyoming Na-montmorillonite (MMT) supplied by the Clay Minerals Society. Octadecyl-trimethyl-ammonium(Br) (ODTMA) was the organic cation used for modifying the clay surface to micelle-clay status. MIC and NC were not able to retain a sufficient amount of the surfactant. The MMT-ODTMA system, prepared using a concentration of the organic cation higher than the critical micelle concentration (CMC), was very effective to remove from water the herbicide atrazine, selected as the model contaminant for this study. This result encourages us to continue investigations to offer a low-cost and straightforward system to purify water even at home or small settlement levels.
Characterisation of natural and modified clay used for a filtration system aiming at the removal of contaminants from surface water.
PALLARA M.;LAVIANO R.
2021-01-01
Abstract
Abstract. The scientific community has focused many research efforts to find natural materials suitable for the most efficient purification of wastewater. Our contribution deals with removing organic contaminants based on the exploitation of the natural properties of clay and organo-clay materials. Two raw clayey materials (MIC and NC) were collected from the Basilicata region (South Italy), and another one was a Wyoming Na-montmorillonite (MMT) supplied by the Clay Minerals Society. Octadecyl-trimethyl-ammonium(Br) (ODTMA) was the organic cation used for modifying the clay surface to micelle-clay status. MIC and NC were not able to retain a sufficient amount of the surfactant. The MMT-ODTMA system, prepared using a concentration of the organic cation higher than the critical micelle concentration (CMC), was very effective to remove from water the herbicide atrazine, selected as the model contaminant for this study. This result encourages us to continue investigations to offer a low-cost and straightforward system to purify water even at home or small settlement levels.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
