Title :
Study on the treatment of phosphate wastewater with modified Kaolin
Author :
Youtao, Zhai ; Feng, Wang
Author_Institution :
Sch. of Environ. Sci. & Spatial Inf., China Univ. of Min. & Technol., Xuzhou, China
Abstract :
Kaolin has been modified with hydrochloric acid and calcination, and given a study on the adsorption of phosphate by modified Kaolin. The Results show that phosphate adsorption capacities of modified Kaolin were raised enormously. When P concentration is 20 mg/L,consumption of modified Kaolin is 2%(weight ratio), Amounts of adsorption of Kaolin modified with hydrochloric acid and modified with heating are 0.82mg/g and 1.98mg/g , respectively. Remainder concentration of P in water are 3.63mg/L and 0.12mg/L , respectively. Rate of removing of P were raised with amount of hydrochloric acid increase. Optimum temperature of heating modification is 500-600°C. Adsorption characteristics can be described with Langmuir equation.
Keywords :
adsorption; heating; phosphorus compounds; wastewater treatment; Langmuir equation; calcination; heating modification; hydrochloric acid; modified Kaolin; phosphate adsorption; phosphate wastewater; temperature 500 degC to 600 degC; Carbon; Educational institutions; Equations; Heating; Isothermal processes; Minerals; Nitrogen; Adsorption; Modified Kaolin; Phosphate; rate of removing;
Conference_Titel :
Electric Technology and Civil Engineering (ICETCE), 2011 International Conference on
Conference_Location :
Lushan
Print_ISBN :
978-1-4577-0289-1
DOI :
10.1109/ICETCE.2011.5774536
