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 …

Nickel is an important metal, heavily utilized in industry mainly due to its anticorrosion
properties. As a consequence, nickel containing wastes such as spent batteries and …

Electronic waste (e-waste) with an annual growth rate of 3–5% is one of the fastest-growing
waste streams. The unregulated accumulation and improper recycling can cause grave …

With the continuous development of industrialization and the depletion of ore resources, the
recovery of valuable metals from spent catalysts has attracted the attention of researchers …

In this review, resources of nickel and status of different processes/technologies in vogue or
being developed for extraction of nickel and associated metals from both primary and …

Thiourea-formaldehyde (TF) resin is prepared by polycondensation of its two precursors; the
incorporation of pre-formed magnetite particles allows synthesizing a magnetic derivative of …

Heterogeneous iron catalysts are active in the hydrogenation of carbon oxides and are
widely investigated for the production of long‐chained hydrocarbons according to the …

Spent hydrodesulphurisation (HDS) catalysts from petroleum refineries, mostly constituted
by aluminium (Al), molybdenum (Mo), nickel (Ni) and cobalt (Co), are classified as …

Spent catalysts generated from various processing industries such as those involved in the
hydrogenation of fats and oils pose severe environmental issues if not treated and disposed …

The present communication investigates the reaction mechanism of extraction of Zn (II) and
Ni (II) and thermodynamic modeling using di-(2-ethylhexyl) phosphoric acid (D2EHPA) as …