title: Endosulfan sulfate sorption on natural organic substances.
abstract: This work proposes a viable remediation method based on the use of natural organic substances (NOSs) that characterize the Mediterranean region to improve the ecological system. A series of experiments, including variable conditions, such as temperature, pH, contact time, and pesticide concentration, were performed to demonstrate the efficiency of endosulfan sulfate removal from water by NOSs. Experimental results showed that the pH and temperature of pesticide solutions negatively affect the adsorption process. The maximum adsorption capacity for a specific initial concentration of endosulfan sulfate (0.5 microg/L) was achieved with Origanum compactum (75%), followed by Cistus ladaniferus and Raphanus raphanistrum (72 and 68%, respectively). The adsorption tests gave very satisfying results and point to the possible application of these supports as a remediation technique to prevent pesticide contamination of aquatic ecosystems.
authors: Department of Chemical and Environmental Engineering, University of Seville, Seville, Spain. elbakouri@us.es
authors: Hicham
authors: H
authors: El Bakouri
authors: José
authors: J
authors: Morillo
authors: José
authors: J
authors: Usero
authors: Abdelhamid
authors: A
authors: Ouassini
mesh_terms: D000327:Adsorption; D000383:Agriculture / Q000379:methods; D029758:Cistus / Q000737:chemistry; D004726:Endosulfan / Q000302:isolation & purification*; D005052:Eucalyptus / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D019083:Mediterranean Region; D008956:Models, Chemical; D030007:Nerium / Q000737:chemistry; D031341:Origanum / Q000737:chemistry; D010573:Pesticide Residues / Q000302:isolation & purification*; D018515:Plant Leaves / Q000737:chemistry*; D032107:Populus / Q000737:chemistry; D031224:Raphanus / Q000737:chemistry; D013696:Temperature; D013997:Time Factors; D014877:Water Pollution, Chemical / Q000517:prevention & control*; D018508:Water Purification / Q000379:methods*
chemical_list: D010573:Pesticide Residues; D004726:Endosulfan