A novel approach for removing cadmium from synthetic wet phosphoric acid using sulfide precipitation process operating in batch and continuous modes

Boosting the growth and aggregation of sulfide nanoparticlesviaregulating heterogeneous nucleation for enhanced sedimentation

“…However, the sulfide precipitation process of metals usually produces tiny particles of metal sulfides with poor settling performance. 12,13 On the one hand, the high degree of supersaturation of metal sulfides causes a burst of nucleation that limits crystal growth. 14,15 On the other hand, residual sulfide reagents (H 2 S, HS − , S 2− ) tend to be adsorbed on the surface of metal sulfide particles and affect the aggregation and growth of the particles.…”