This paper discusses the resource utilization of Fe-rich sludges generated as waste
products from water treatment, hydrometallurgy, surface finishing, and dye chemical …

Ferrous waste by-products from the metallurgical industry have a high potential for
valorization in the context of the circular economy, and can be converted to value-added …

Magnetic iron oxides are usually employed as main components of 4-nitrophenol (4-NP)
reduction catalysts. Here, magnetic Fe 3 O 4 nanoparticles (Rec-Fe 3 O 4) recycled from …

Rotary kiln incineration is a desirable disposal option for steel-rolling oily sludge. However,
ringing remains a key challenge in the highly efficient operation of rotary kilns. This study …

Goethite is the major component of solid waste from surface de-rusting and zinc-electrolysis
processes, and such waste is conventionally disposed of in landfills. A new conversion …

The efficient recycling of valuable resources from rolling oil sludge (ROS) to gain new uses
remains a formidable challenge. In this study, we reported the recycling of solid Fe …

Herein, a KFeS 2 whisker was formed in mass production at a low temperature, with waste
cold-rolling sludge as Fe source, which exhibited good performance in the removal of Zn/Ni …

This paper introduces a transformative hydrodeoxygenation process for the simultaneous
recovery of oil and iron from hazardous rolling oil sludge (ROS). Leveraging the inherent …

Steelmaking and ferrous metal processing companies are suppliers of great importance to a
wide array of industries, thus being quintessential for the social and financial growth of …

NaCl-modified graphitic carbon nitrides (GCN) were applied in the base-catalyzed
transesterification of recovered oil. GCN has been seen as a prospective heterogeneous …