In recent two decades, ultrasound has been broadly applied to the hydrometallurgical
leaching process to recover valuable metals within raw materials, aiming to solve the …

The main aim of this work was to develop a simple, efficient, and environmentally friendly
technology for recycling all main raw materials [gold, copper and fiber glass (FG) layers] …

Platinum (Pt) is one of the most precious metals with a variety of unique industrial
applications, particularly in catalytic reactions, being its recovery, after use, essential …

Two FCC spent catalysts with different amounts of La 2 O 3 and similar Al 2 O 3/SiO 2 ratios
and the corresponding residues of an optimized process of La-extraction are studied. The …

The electrokinetic remediation assistance on the leaching of spent FCC catalysts
demonstrated satisfactory performance as an alternative method to the traditional leaching …

In this work, we propose a rapid and facile method (oxalic acid leaching under microwave-
assisted conditions) to study the simultaneous recovery of vanadium (V) and nickel (Ni) from …

One of the wastes that can be considered as a promising secondary raw material is a spent
catalyst for cracking petroleum hydrocarbons, containing up to 4 wt% rare earth elements …

Este estudo avaliou a remediação eletrocinética de catalisador desativado de
craqueamento catalítico fluidizado com solução de ácido sulfúrico através das rotas …

Este estudo avaliou a lixiviação ácida convencional e lixiviações ácidas associadas a
peróxido de hidrogênio e micro-ondas, visando maior recuperação de lantânio de …