title: Adsorption of simazine on zeolite H-Y and sol-gel technique manufactured porous silica: A comparative study in model and natural waters.
abstract: In this work, we studied the removal of simazine from both a model and well water by adsorption on two different adsorbents: zeolite H-Y and a porous silica made in the laboratory by using the sol-gel technique. The pH dependence of the adsorption process and the isotherms and pseudo-isotherms of adsorption were studied. Moreover, an iterative process of simazine removal from both the model and well water, which allowed us to bring the residual simazine concentration below the maximum concentration (0.05 mg L(-1)) of agrochemicals in wastewater to be released in surface waters or in sink allowed by Italian laws, was proposed. The results obtained were very interesting and the conclusions drawn from them partly differed from what could reasonably be expected.
authors.affiliation: a Department of Agricultural Sciences, University of Naples 'Federico II' , Portici , ( NA ), Italy.
authors.forename: Filomena
authors.initials: F
authors.lastname: Sannino
authors.affiliation: b Laboratory of Materials, Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio , Cassino , ( FR ), Italy.
authors.forename: Antonello
authors.initials: A
authors.lastname: Marocco
authors.affiliation: c Department of Applied Science and Technology, Polytechnic of Torino , Torino , Italy.
authors.forename: Edoardo
authors.initials: E
authors.lastname: Garrone
authors.affiliation: b Laboratory of Materials, Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio , Cassino , ( FR ), Italy.
authors.forename: Serena
authors.initials: S
authors.lastname: Esposito
authors.affiliation: b Laboratory of Materials, Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio , Cassino , ( FR ), Italy.
authors.forename: Michele
authors.initials: M
authors.lastname: Pansini
mesh_terms: D000327:Adsorption; D006863:Hydrogen-Ion Concentration; D007558:Italy; D019904:Polymethyl Methacrylate / Q000737:chemistry; D016062:Porosity; D012822:Silicon Dioxide; D012839:Simazine / Q000737:chemistry* / Q000302:isolation & purification; D062065:Wastewater / Q000737:chemistry; D014867:Water; D014874:Water Pollutants, Chemical / Q000737:chemistry* / Q000302:isolation & purification; D018508:Water Purification / Q000379:methods*; D060986:Water Wells; D017641:Zeolites / Q000737:chemistry*
chemical_list: D019904:Polymethyl Methacrylate; D012822:Silicon Dioxide; D012839:Simazine; D062065:Wastewater; D014867:Water; D014874:Water Pollutants, Chemical; D017641:Zeolites
keywords: Adsorption; iterative process; natural water; porous silicas; simazine removal; zeolite H-Y