Positively charged microporous ceramic membrane for the removal of Titan Yellow through electrostatic adsorption.
To develop a depth filter based on the electrostatic adsorption principle, positively charged microporous ceramic membrane was prepared from a diatomaceous earth ceramic membrane. The internal surface of the highly porous ceramic membrane was coated with uniformly distributed electropositive nano-Y2O3 coating. The dye removal performance was evaluated through pressurized filtration tests using Titan Yellow aqueous solution. It showed that positively charged microporous ceramic membrane exhibited a flow rate of 421L/(m(2)·hr) under the trans-membrane pressure of 0.03bar. Moreover it could effectively remove Titan Yellow with feed concentration of 10mg/L between pH3 to 8. The removal rate increased with the enhancement of the surface charge properties with a maximum rejection of 99.6%. This study provides a new and feasible method of removing organic dyes in wastewater. It is convinced that there will be a broad market for the application of charged ceramic membrane in the field of dye removal or recovery from industry wastewater.
College of Material Science and Chemical Engineering, Tianjin University of Science and Technology, Tianjin 300457, China; Institute of Medical Equipment, Academy of Military Medical Sciences, Tianjin 300161, China. Electronic address: chengxiuting122@163.com.
Xiuting
X
Cheng
College of Material Science and Chemical Engineering, Tianjin University of Science and Technology, Tianjin 300457, China.
Na
N
Li
Institute of Medical Equipment, Academy of Military Medical Sciences, Tianjin 300161, China. Electronic address: zmf323@163.com.
Mengfu
M
Zhu
College of Material Science and Chemical Engineering, Tianjin University of Science and Technology, Tianjin 300457, China; Institute of Medical Equipment, Academy of Military Medical Sciences, Tianjin 300161, China.
Lili
L
Zhang
College of Material Science and Chemical Engineering, Tianjin University of Science and Technology, Tianjin 300457, China.
Yu
Y
Deng
Institute of Medical Equipment, Academy of Military Medical Sciences, Tianjin 300161, China. Electronic address: dcnudt@163.com.
Cheng
C
Deng
D000327:Adsorption; D002516:Ceramics; D004396:Coloring Agents / Q000737:chemistry*; D005374:Filtration / Q000295:instrumentation* / Q000379:methods; D007220:Industrial Waste; D008567:Membranes, Artificial; D016062:Porosity; D055672:Static Electricity; D013499:Surface Properties; D014226:Triazenes / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000737:chemistry*
D004396:Coloring Agents; D007220:Industrial Waste; D008567:Membranes, Artificial; D014226:Triazenes; D014874:Water Pollutants, Chemical; C044584:titan yellow
Electrostatic adsorption; Organic dyes; Positively charged ceramic membrane; Wastewater treatment