Fabrication of a confined pyrite cinder-based photo-Fenton catalyst and its degradation performance for ciprofloxacin

A two dimensional Co(OH)2 catalytic gravity-driven membrane for water purification: a green and facile fabrication strategy and excellent water decontamination performance

“…Accordingly, the distinct reaction pattern at initial pH = 3 might be attributed to a complete conversion of CoOH + into free Co 2+ that could lead to severe catalyst dissolution, and eventually cause the collapse of material structures. 50,51 Co(OH) 2 + H + → CoOH + + H 2 OCoOH + + OH − → Co(OH) 2 CoOH + + H + → Co 2+ + H 2 O…”

A Novel Approach for Comprehensive Utilization by Leaching Pyrite Cinder with Titanium Dioxide Waste Acid by Response Surface Methodology

“…A large amount of waste residues was disposed by landfill or directly stacked, which not only wasted resources and occupied a large amount of land but also caused varying degrees of pollution to the soil, water, and atmospheric environment. , With the depletion of mineral resources and the widespread utilization of iron ore, the comprehensive utilization of sulfuric acid slag has become an urgent problem that needs to be solved. At present, the comprehensive utilization of pyrite cinder mainly included preparation of iron salts, iron-based pigments, iron oxides, polymeric ferric sulfate, and water purification flocculants using pyrite cinder as the raw material. − In recent years, pyrite cinder had also been used to prepare confined photo-Fenton catalytic materials through simple leaching adsorption calcination methods and applied in removal of reactive azo dye from aqueous solutions. , And these methods provided new ideas for comprehensive utilization of pyrite cinder.…”

“… 6 − 10 In recent years, pyrite cinder had also been used to prepare confined photo-Fenton catalytic materials through simple leaching adsorption calcination methods and applied in removal of reactive azo dye from aqueous solutions. 11 , 12 And these methods provided new ideas for comprehensive utilization of pyrite cinder.…”