Green composite hydrogel coupling regulated with waste aluminum sludge and biomass for highly selective Pb(Ⅱ)-removal

Key Points

• Lead removal was significantly enhanced by using a green composite hydrogel with waste aluminum sludge.
• The adsorption capacity of this hydrogel reached impressive levels, implying efficient heavy metal capture.
• Assessment using a newly synthesized green composite hydrogel illustrates its practical applications for environmental cleanup.
• This approach highlights the potential of recycling waste materials for effective pollutants management, especially in water treatment.