Al₂O₃/Yttria‐Stabilized Zirconia Hollow‐Fiber Membrane Incorporated with Iron Oxide for Pb(II) Removal

Abstract

Removal by absorptive ceramic membranes can simultaneously absorb and separate metal ions from water. Alumina/yttria-stabilized zirconia (Al 2 O 3 /YSZ) hollow-fiber membranes, fabricated using phase inversion and sintering process, were deposited with iron oxide by an in-situ hydrothermal process. The results showed that a-Fe 2 O 3 was produced and incorporated across the membranes. A reduction in flux was recorded with the deposition of a-Fe 2 O 3. However, it improved the adsorption capacity for heavy metal adsorption. The adsorption-separation test demonstrated that the optimized membrane is able to completely remove Pb(II) ions after two hours.

Developments of heavy metal removal methods during the latest decade based on Citespace analysis

“…Aside from this advantage, it can be functionalized or modified for different purposes [43]. Working as the host, its incorporation with α-Fe2O3 avoids the agglomeration of Fe2O3 particles, thus improves their adsorbing capacity [44]. Organic polymers also help.…”