Electroextraction of Pb2+ ions from diluted solutions by a process combining ion-exchange textiles and membranes

Fabrication And Photocatalytic Activity Of Fishbone-like PbMoO4 Via Separation-assembly Coupling Technique Based On A Supported Liquid Membrane System

“…To remove lead ions from industrial wastewater, some conventional heavy metal removal processes such as biosorption [5][6][7][8][9], chemical precipitation [10], coagulation, complexing, solvent extraction [11][12][13], electro-membrane processes [14][15][16], ion exchange [17,18], and ion exchange/adsorption on solid surfaces [19] have been developed. However, there are some inherent shortcomings such as requiring a large area of land, a sludge dewatering facility, skillful operators, high capital and regeneration costs and multiple basin configurations [10].…”

Treatment of simulated dilute Ni2+-containing wastewater by electrodeionisation with a bipolar membrane: Feasibility and current density distribution

“…Because of the advantages of the EDI process, the treatment of dilute heavy metal wastewater has also been studied by many scholars using different EDI configurations [14,[18][19][20][21][22][23][24][25][26][27][28][29][30], such as the traditional mixed-bed EDI (EDI-MB), EDI of only cationexchangers (EDI-CB), and the layer bed EDI (EDI-LB). All of the results have shown that the process could remove the heavy metal ions from the wastewater, but many problems exist.…”

“…For example, the traditional mixed-bed EDI [14,19] results in the precipitation of heavy metal hydroxides in the diluate compartment. The EDI filled with only cationexchangers [20][21][22][23][24][25] has a poor water product. The layer bed EDI [14] has a complex structure, and the process of filling with the resins is difficult; the separated bed EDI [22] causes difficulty in equipment amplification.…”

Recovery and reuse of surfactant SDS from a MEUF retentate containing Cd2+ or Zn2+ by ultrafiltration

“…At present, the popular techniques for treating the wastewater containing heavy metals are chemical precipitation [3], adsorption [4,5], bleaching powder oxidation, ferrite process [6], ion-exchange [7,8], biotechnology [9,10] and so on. Chemical precipitation and adsorption are the most widely used techniques to remove heavy metals from wastewater, but the final concentrations of heavy metals rarely meet the discharge standard; ion-exchange can remove heavy metal ions effectively and selectively, but the cost of resin is relatively high [11].…”