Removal of heavy metals from contaminated water using industrial wastes containing calcium and magnesium

Two industrial wastes (IW1 and IW2) were investigated as potential sorbents to retain cadmium lead from contaminated water. The sorption experiments have been conducted through lab-engineered cartridge filtration system in order get close possible processes. effectiveness of IW1 IW2 compared that activated charcoal Norit® (AC), the best-known matrix for its excellent retention capacity. isotherms metals on three solid (IW1, AC) built, then mathematically modelled. Free Gibbs energy (ΔG°) processes well equilibrium parameter (RL) calculated each pollutant-sorbent couple. study revealed that: i) sorption, was much more effective than especially AC (18-fold higher term maximal capacity); ii) if slightly less lead, it can be still considered an interesting sorbent due low cost; iii) spontaneous IW1, almost half IW2; iv) regarding retention, spontaneous; (v) mainly explained by precipitation since otavite, cerussite hydrocerussite identified characterized X-ray diffraction used sorbents. showed studied stood out new efficient materials with power equal or greater reference material AC. prospect a generation lasting efficiency water depollution agents comes at key moment search perspectives circular economy.