With the rapid increase of new energy industry, the shortage of critical metals for new energy
industry, such as Ni, Co, V, and Pt, has received global attention. The hazardous spent …

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 …

Recovering metal values in hazardous spent hydrogenation catalysts is of vital economic
and environmental importance. Herein, the selective recovery of valuable molybdenum …

Spent hydrodesulfurization (HDS) catalysts, containing considerable amount of pollutants
and metals including vanadium (V), molybdenum (Mo), aluminum (Al), and nickel (Ni), are …

Spent hydrofining/selective catalytic reduction catalysts generated during the production of
ultra-low-sulfur/nitrogen fuel are considered to be hazardous wastes. Furthermore, the …

Handbook of Spent Hydroprocessing Catalysts, Second Edition, covers all aspects of spent
hydroprocessing catalysts, both regenerable and non-regenerable. It contains detailed …

The leachate of waste phosphogypsum (PG) contains substantial amounts of phosphate,
sulfate, and fluoride, which poses an immense threat to the safety of the aquatic ecosystem …

In this study, an innovative approach is followed to synthesize graft copolymerized chitosan
with acetylacetone (AA-g-CS) through free-radical induced grafting. Afterwards, AA-g-CS …

Abstract The catalyst Mo–Ni/Al 2 O 3 is commonly used in the hydrodesulfurization of
petroleum fractions. The catalyst is discarded when its catalytic activity does not meet the …

The selective separation of chromium (Cr) from sulphuric acid leaching solutions is
necessary for the harmless disposal and resource recycling of electroplating sludge. A …