Patent ID: 7884043

Claim:
A sorbent for removal of heavy metal ions from water, consisting of ground zeolite, nanophase iron hydroxide being 12-18% of the sorbent by mass, and nanophase boehmite being 5-13% of the sorbent by mass; wherein the zeolite comprises about 64.79% of SiO 2 , about 12.85% of H 2 O, about 12.75% of Al 2 O 3 , about 1.89% of CaO, about 1.50% of MgO, about 1.40% of Fe 2 O 3 , about 1.26% of K 2 O, about 0.44% of Na 2 O, about 0.03% of CaF 2 , about 0.02% of TiO 2 , and wherein the zeolite has a mean clinoptilolite content of about 60%.