Adsorption studies on rice husk: removal and recovery of Cd(II) from wastewater.
Adsorption behaviour of Ni(II), Zn(II), Cd(II) and Cr(VI) on untreated and phosphate-treated rice husk (PRH) showed that adsorption of Ni(II) and Cd(II) was greater when PRH was used as an adsorbent. Sorption of Cd(II) was dependent on contact time, concentration, temperature, adsorbent doses and pH of the solution. The Langmuir constants and thermodynamic parameters have been calculated at different temperatures. It was found that recovery of Cd(II) from synthetic wastewater by column operation was better than a batch process.
Ajmal
Mohammad
M
Department of Applied Chemistry, Environmental Research Laboratory, Faculty of Engineering and Technology, Aligarh Muslin University, Aligarh 202002, India. rais45@mailcity.com
Rao
Rifaqat Ali Khan
RA
Anwar
Shahana
S
Ahmad
Jameel
J
Ahmad
Rais
R
D000327:Adsorption; D002104:Cadmium / Q000302:isolation & purification*; D006863:Hydrogen-Ion Concentration; D019216:Metals, Heavy / Q000302:isolation & purification; D012275:Oryza / Q000737:chemistry*; D013696:Temperature; D014865:Waste Disposal, Fluid / Q000379:methods*; D018508:Water Purification / Q000379:methods*
D019216:Metals, Heavy; D002104:Cadmium