Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
575972 | Journal of Hazardous Materials | 2015 | 23 Pages |
Abstract
A type of novel free-sintering and self-supporting inorganic membrane for wastewater treatment was fabricated in this study. This inorganic membrane was synthesised using metakaolin and sodium silicate solutions moulded according to a designed molar ratio (SiO2/Al2O3Â =Â 2.96, Na2O/Al2O3Â =Â 0.8 and H2O/Na2OÂ =Â 19) which formed a homogenous structure and had a relative concentration pore size distribution, via scanning electron microscopy (SEM) and Brunauer-Emmett-Teller (BET) analyses. In this work, the Ni2+ removal effect of geopolymer inorganic membrane was studied under different pH value, initial concentration of Ni2+ solutions and initial operation temperature. Results showed that geopolymer inorganic membrane efficiently removes Ni2+ from wastewater because of the combined actions of the adsorption and rejection of this membrane on Ni2+ during membrane separation. Therefore, geopolymer inorganic membrane may have positive potential applications in removing Ni2+ or other heavy metal ions from aqueous industrial wastewater.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Health and Safety
Authors
Yuanyuan Ge, Yuan Yuan, Kaituo Wang, Yan He, Xuemin Cui,