Removal of Cu(II) from aqueous solutions by adsorption process with anatase-type titanium dioxide.
The experiment was performed in the reactor with suspended anatase-type titanium dioxide particles. The adsorption amount increased rapidly with an increasing pH value from pH 2 to 5 and remained constant over pH 5. The adsorption amount of Cu(2+) increased with temperature from 15 degrees C to 40 degrees C. The adsorption equilibrium constant (K(ads)) was 0.854 and adsorption isotherm of Cu(2+) adsorption on titanium dioxide was more suitable in Langmuir adsorption isotherm than in Freundlich isotherm. The adsorption rate was rapid with an increasing number of UV lamps of 254 nm.
Kim
Moon-Sun
MS
Department of Chemical Engineering, Sungkyunkwan University, 300 Chunchun-dong, Jangan-gu, Suwon, 440 746 Gyunggi-do, South Korea.
Hong
Kyo-Min
KM
Chung
Jaygwan G
JG
D000327:Adsorption; D004396:Coloring Agents / Q000737:chemistry*; D003300:Copper / Q000737:chemistry / Q000302:isolation & purification*; D014025:Titanium / Q000737:chemistry*; D014466:Ultraviolet Rays; D014873:Water Pollutants / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*
D004396:Coloring Agents; D014873:Water Pollutants; C009495:titanium dioxide; D003300:Copper; D014025:Titanium