title: Use of a low-cost biosorbent to remove pesticides from wastewater.
abstract: A lignocellulosic substrate (LS) obtained from our local agroindustry was used as a low-cost and effective adsorbent for the removal of pesticides from wastewaters. The studied pesticides were terbumeton (N-(1,1-dimethyl)-Nethyl-6-methoxy-1,3,5-triazine-2,4-diamine), desethyl terbumeton (N-(1,1-dimethylethyl)-6-methoxy-1,3,5-triazine-2,4-diamine), dimetomorph (4-[3-(4-chlorophenyl)-3-(3,4-dimethoxyphenyl)acryloyl]morpholine), and isoproturon (3-(4-isopropylphenyl)-1,1-dimethylurea). Batch and column experiments were conducted as a function of pH and pesticide concentration under laboratory and industrial conditions. The concentration range studied for the pesticides varied from 2 x 10(-7) to 3 x 10(-4) mol L(-1). The influence of organic and inorganic pollutants was assessed by studying the retention of pesticide in the presence of copper(II) and a surfactant. These experiments indicated that LS is an efficient adsorbent toward the investigated pesticides and has little influence of the other pollutants. The kinetic adsorptions are fast, and the amounts of adsorbed pesticide varied from 1 to 8 g kg(-1) of LS. These retention capacities show that LS can provide a simple, effective, and cheap method for removing pesticides from contaminated waters. Thus, this biomaterial may be useful for cleaning up polluted waters.
authors.affiliation: GRECI (Groupe de Recherche en Chimie Inorganique), Université de Reims Champagne-Ardenne, Reims Cedex 2, France. stephanie.boudesocque@univ-reims.fr
authors.forename: Stéphanie
authors.initials: S
authors.lastname: Boudesocque
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Guillon
authors.forename: Michel
authors.initials: M
authors.lastname: Aplincourt
authors.forename: Frédéric
authors.initials: F
authors.lastname: Martel
authors.forename: Sandrine
authors.initials: S
authors.lastname: Noël
mesh_terms: D000327:Adsorption; D002482:Cellulose / Q000737:chemistry*; D003300:Copper / Q000737:chemistry; D003365:Costs and Cost Analysis; D004043:Dietary Fiber; D007700:Kinetics; D008031:Lignin / Q000737:chemistry*; D010575:Pesticides / Q000737:chemistry*; D013501:Surface-Active Agents / Q000737:chemistry; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods
chemical_list: D004043:Dietary Fiber; D010575:Pesticides; D013501:Surface-Active Agents; D014874:Water Pollutants, Chemical; C036909:lignocellulose; D003300:Copper; D002482:Cellulose; D008031:Lignin