| Title | Life cycle assessment of zinc and iron recovery from spent pickling acids by membrane-based solvent extraction and electrowinning |
|---|---|
| ID_Doc | 21651 |
| Authors | Arguillarena, A; Margallo, M; Irabien, A; Urtiaga, A |
| Title | Life cycle assessment of zinc and iron recovery from spent pickling acids by membrane-based solvent extraction and electrowinning |
| Year | 2022 |
| Published | |
| Abstract | In this paper we conducted a life cycle assessment to evaluate the environmental performance of the valorization of spent pickling acid (SPA) generated in the hot-dip galvanizing (HDG) process. We analyzed the environmental impacts of treating one m(3) of SPA, comparing the reference treatment consisting of neutralization, precipitation, stabilization, and landfilling of the metallic sludge (scenario #1), with the innovative LIFE2ACID technology (scenario #2) that produces secondary zinc and iron chloride in solution through non-dispersive solvent extraction (NDSX) and electrowinning (EW). The results showed that the materials credits achieved by the implementation of LIFE2ACID technology turned most of the impact categories evaluated (toxicity, acidification, eutrophication, ozone depletion, etc.) into environmental benefits. Scenario #2 was adapted to achieve either zinc-only recovery (#2.1) or simultaneous iron and zinc recovery (#2.2). The abiotic depletion potential (ADP) of fossil fuels increased slightly from scenario #1 to scenario #2.1 because of the higher energy demand and NaOH consumption of EW, and because only zinc was recovered. However, the valorization of both zinc and iron chloride in scenario #2.2 reduced the ADP-fossil by 27%, compared to the reference treatment. Furthermore, the global warming impact was reduced by 20% and 97% in scenarios #2.1 and #2.2, respectively. With the focus on promoting the circular economy concept, we conclude that the LIFE2ACID technology significantly improves the environmental performance of SPA management. Next steps should consider the life-cycle costs analysis in specific scenarios to find out the trade-off between environmental and economic objectives. |
| https://doi.org/10.1016/j.jenvman.2022.115567 |
Similar Articles
| ID | Score | Article |
|---|---|---|
5329
|
Arguillarena, A; Margallo, M; Arruti-Fernandez, A; Pinedo, J; Gomez, P; Ortiz, I; Urtiaga, A Circular economy in hot-dip galvanizing with zinc and iron recovery from spent pickling acids(2023)Rsc Advances, 13, 10 | |
| 28094
|
Lorenz, M; Seitfudem, G; Randazzo, S; Gueccia, R; Gehring, F; Prenzel, TM Combining Membrane and Zero Brine Technologies in Waste Acid Treatment for a Circular Economy in the Hot-Dip Galvanizing Industry: A Life Cycle Perspective(2023)Journal Of Sustainable Metallurgy, 9.0, 2 | |
| 12708
|
Pietrelli, L; Ferro, S; Vocciante, M Raw materials recovery from spent hydrochloric acid-based galvanizing wastewater(2018) | |
| 26492
|
Moreno-González, R; Macías, F; Meyer, A; Schneider, P; Nieto, JM; Olfas, M; Cánovas, CR Life cycle assessment of management/valorisation practices for metal-sludge from treatment of acid mine drainage(2023) | |
| 14718
|
Arguillarena, A; Margallo, M; Arruti-Fernández, A; Pinedo, J; Gómez, P; Urtiaga, A Scale-Up of Membrane-Based Zinc Recovery from Spent Pickling Acids of Hot-Dip Galvanizing(2020)Membranes, 10, 12 | |
| 24404
|
Gueccia, R; Winter, D; Randazzo, S; Cipollina, A; Koschikowski, J; Micale, GDM An integrated approach for the HCl and metals recovery from waste pickling solutions: pilot plant and design operations(2021) | |
| 28997
|
Masindi, V; Foteinis, S; Renforth, P; Ndiritu, J; Maree, JP; Tekere, M; Chatzisymeon, E Challenges and avenues for acid mine drainage treatment, beneficiation, and valorisation in circular economy: A review(2022) | |
| 25456
|
Collivignarelli, MC; Abbà, A; Bestetti, M; Crotti, BM; Miino, MC Electrolytic Recovery of Nickel and Copper from Acid Pickling Solutions Used to Treat Metal Surfaces(2019)Water Air And Soil Pollution, 230, 5 |