Selective sorption of lead, cadmium, and nickel ions on recycled waste porous glass beads was investigated. Single-metal equilibrations were carried out in demineralized water and ternary metal equilibrations were carried out in demi- and tap water. Freundlich isotherm gave a good correlation of the experimental data. Maximum metal retention (q(max)) in single-ion solutions were 18.66mg/g(RPWG) (0.090mmol/g(RPWG)), 4.83mg/g(RPWG) (0.043mmol/g(RPWG)), 4.00mg/g(RPWG) (0.068mmol/g(RPWG)), respectively, for Pb+2, Cd+2, and Ni+2, and lower figures were in the case of ternary systems: 13.50mg/g(RPWG)(0.065mmol/g(RPWG)), 2.23 (0.020mmol/g(RPWG)), 2.05mg/g(RPWG)(0.034mmol/g(RPWG)), respectively, for Pb+2, Cd+2, and Ni+2, with further drastic reduction in tap water. Metal exhausted beads were used as thermal insulators in cement mortars, minimizing their potential impact in the environment.