Antonio Clareti Pereira, Ph.D.* IKR J. Eng. Technol. | Page: 1-22 DOI: 10.5281/zenodo.24015599 Spent nickel–molybdenum (NiMo) hydroprocessing catalysts combine recoverable strategic metals with complex alumina supports, deposited carbon, sulfur, residual hydrocarbons, and feed-dependent contaminants. This critical review evaluates pathways from Read More …
Tag: Process Integration
Aqua Regia in Metal Processing: A Critical Review of Reaction Mechanisms, Selectivity, and Industrial Applicability
Antonio Clareti Pereira, PhD* IKR J. Eng. Technol. | Page: 43-56 DOI: 10.5281/zenodo.23176166 Aqua regia remains one of the most chemically powerful liquid-phase systems for dissolving gold and platinum-group metals, yet its industrial value is frequently overstated when dissolution yield Read More …
Integrated Process Routes for Spent Pot Lining Valorization: From Hazard Detoxification to Closed-Loop Recovery of Fluorides, Carbon, and Refractories
Antonio Clareti Pereira, PhD PhD in Chemical Engineering University of São Paulo (USP) Belo Horizonte, Minas Gerais, Brazil DOI: 10.5281/zenodo.22136771 Spent pot lining (SPL) is simultaneously a hazardous residue and a heterogeneous secondary resource containing carbon, fluoride-bearing electrolyte, sodium, aluminum, Read More …
From Ferrous Sulfate Waste to Fertilizer and Metal Powder: Thermodynamics, Process Integration, and Circular Economy Opportunities for Dual-Product Recovery
Antonio Clareti Pereira* PhD in Chemical Engineering São Paulo University – USP Belo Horizonte – MG – Brazil DOI: 10.5281/zenodo.20596981 Ferrous sulfate is produced in large quantities by hydrometallurgical operations, steel pickling, titanium dioxide manufacturing, acid regeneration circuits, and several Read More …
