▎ 摘　　要

NOVELTY - A montmorillonite-based porous material comprises 23-32 pts. wt. montmorillonite, 15-21 pts. wt. chitosan, 13-18 pts. wt. sodium bentonite, 8-15 pts. wt. pore-forming agent, 4-10 pts. wt. graphene oxide, and 2-9 pts. wt. sodium hydroxide. USE - The montmorillonite-based porous material is used for heavy metal-containing wastewater (claimed). ADVANTAGE - The porous material can be regenerated, and has high strength, rich porosity, good adsorption effect on heavy metals, and better adsorption performance than the existing conventional modified montmorillonite. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the porous material comprising mixing montmorillonite powder, chitosan powder and sodium-based bentonite powder, adding to sodium hydroxide solution, stirring, standing, separating solid and liquid, washing solid, adding to water, adding graphene oxide, stirring, separating, drying solid, pressing, shaping, and sintering.