Dealumination of 3D-printed geopolymers for enhanced methylene blue removal from wastewater

= 165 ppm). The lattices were successfully regenerated, maintaining >93% removal after 10 adsorption-desorption cycles. These results demonstrate that EDTA dealumination is an effective surface-engineering approach to enhance SSA and adsorption in 3D-printed geopolymer structures, supporting improved mitigation of water pollution and sustainable use of environmental resources.