title: Removal of heavy metals in rinsing wastewater from plating factory by adsorption with economical viable materials.
abstract: The removal of heavy metals from plating factory wastewater with economical materials was investigated by the column method. Montmorillonite, kaolin, tobermorite, magnetite, silica gel and alumina were used as the economical adsorbents to wastewater containing Cd(II), Cr(VI), Cu(II) and Pb(II). This removal method of heavy metals proved highly effective as removal efficiency tended to increase with increasing pH and decrease with increasing metal concentration. The removal percentages by adsorption onto montmorillonite, tobermorite, magnetite, and silica gel showed high values for all metals. From the results for the heat of adsorption, the adsorption process in the present study might be chemisorption. The proposed method was successfully applied to the removal of Cd(II), Cr(VI) and Cu(II) in rinsing wastewater from plating factory in Nagoya City, Aichi Prefecture, Japan. Since the economical adsorbents used can be obtained commercially because they are easily synthesized, the wastewater treatment system developed is rapid, simple and cheap for the removal of heavy metals.
authors.affiliation: Department of Chemistry for Materials, Faculty of Engineering, Mie University, Tsu, 514-8507, Mie, Japan. hidek@chem.mie-u.ac.jp
authors.forename: Hideyuki
authors.initials: H
authors.lastname: Katsumata
authors.forename: Satoshi
authors.initials: S
authors.lastname: Kaneco
authors.forename: Kentaro
authors.initials: K
authors.lastname: Inomata
authors.forename: Kumiko
authors.initials: K
authors.lastname: Itoh
authors.forename: Kunihiro
authors.initials: K
authors.lastname: Funasaka
authors.forename: Kazuaki
authors.initials: K
authors.lastname: Masuyama
authors.forename: Tohru
authors.initials: T
authors.lastname: Suzuki
authors.forename: Kiyohisa
authors.initials: K
authors.lastname: Ohta
mesh_terms: D000327:Adsorption; D003363:Cost Control; D004595:Electroplating; D019216:Metals, Heavy / Q000737:chemistry / Q000302:isolation & purification*; D012037:Refuse Disposal; D014873:Water Pollutants / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*
chemical_list: D019216:Metals, Heavy; D014873:Water Pollutants