The Recycling of Ferric Salt in Steel Pickling Liquors: Preparation of Nano-sized Iron Oxide

Entrepreneurship in the Raw Materials Sector

“…Iron yields over 80% could be reached by optimizing the anion-exchange procedure controlling the oxidation states and the degrees of chloro-complexation of the ionic species to be separated under optimum condition . Further, it may significantly increase the value of SPL by producing nano-sized iron oxide powder which has wide range application on magnetic recording material and biological technology (Tang et al 2016).It may be related to the prelim inary solution purification step if the cathodic deposition of pure zinc is the main objective. The value of these products may overwhelm the economical advantage of eliminating the costs of incurred by the otherwise mandatory treatment and handling of the hazardous material.…”

Obtention and Characterization of Ferrous Chloride FeCl2·4H2O from Water Pickling Liquors

“…Water pickling liquors is a common waste generated in the process of steel pickling and the electroplating industry and usually contain an acid (cleaning reagent) and a large amount of iron ions in their composition [1,2]. Normally, cleaning agents such as hydrochloric, sulphuric, hydrofluoric, and nitric acids are widely used in the mentioned process [1].…”

“…Water pickling liquors is a common waste generated in the process of steel pickling and the electroplating industry and usually contain an acid (cleaning reagent) and a large amount of iron ions in their composition [1,2]. Normally, cleaning agents such as hydrochloric, sulphuric, hydrofluoric, and nitric acids are widely used in the mentioned process [1]. Due to the acidic nature (30-100 g/L concentration of acid), and the high concentration of iron ions (at around 60-250 g/L), this type of waste can lead to severe environmental damage, and it has been listed as hazardous waste [2].…”

Obtention and Characterization of Ferrous Chloride FeCl₂·4H₂O from Pickling Waste Liquors

“…Pickling waste liquor is a common waste generated in the process of steel pickling and electroplating industry, which usually contains an acid (cleaning reagent) and a large amount of iron ions in its composition [1,2]. Normally, cleaning agents such as hydrochloric, sulphuric, hydrofluoric, and nitric acids are widely used in the mentioned process [1].…”

“…Pickling waste liquor is a common waste generated in the process of steel pickling and electroplating industry, which usually contains an acid (cleaning reagent) and a large amount of iron ions in its composition [1,2]. Normally, cleaning agents such as hydrochloric, sulphuric, hydrofluoric, and nitric acids are widely used in the mentioned process [1]. Due to the acidic nature (30-100 g/L concentration of acid), and the high concentration of iron ions (at around 60-250 g/L), this type of waste can lead to severe environmental damage and it has been listed as hazardous waste [2].…”