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 …

Recovery of valuable metals such as cobalt, molybdenum, nickel, and vanadium from spent
catalysts has attracted much attention owing to the gradual depletion of high-grade ores. In …

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

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

Industrial Ecology (IE) is considered a recent but very promising research field; it offers new
perspectives of solutions to environmental problems related to production that combines the …

This study proposes a technical route toward the comprehensive recovery of valuable
metals from spent Ni–Mo/γ–Al 2 O 3 hydrofining catalysts, which were employed to remove …

Green chemical engineering recognises the concept of developing innovative
environmentally benign technologies to protect human health and ecosystems. In order to …

Molybdenum (Mo) and vanadium (V) were effectively extracted from the spent diesel
exhaust catalyst (V 2 O 5–MoO 3/TiO 2) by using an ammonia leaching method. Meanwhile …

Spent petroleum hydroprocessing catalysts (HPCs) are considered hazardous waste due to
their high content of heavy metals and organic pollutants, posing a risk of environmental …

Molybdenum, vanadium, and tungsten coexist with other valuable metals in diverse
resources. In order to recover these metals with high purity, hydrometallurgical processes …