Bingbing Liu , Yunyun Chen , Peidong Yang , Shengpeng Su , Wenjuan Wang , Shuzhen Yang , Yanfang Huang , Hu Sun , Guihong Han
{"title":"从二氧化钛废酸(TDWA)中回收关键金属综述","authors":"Bingbing Liu , Yunyun Chen , Peidong Yang , Shengpeng Su , Wenjuan Wang , Shuzhen Yang , Yanfang Huang , Hu Sun , Guihong Han","doi":"10.1016/j.mineng.2025.109781","DOIUrl":null,"url":null,"abstract":"<div><div>Titanium dioxide waste acid (TDWA) is an inevitable hazardous by-product in the titanium dioxide (TiO<sub>2</sub>) production. The substantial emission volume of TDWA, characterized by high acidity and diverse metal compositions, presents considerable risks of environmental pollution and resource wastage. The metals recovery from TDWA has emerged as a critical challenge for the green sustainable development of TiO<sub>2</sub> industry. After literature analysis, numerous literatures are focused on the separation of a single metal. Therefore, this work systematically reviews the recovery technologies of simplex Fe, Ti, V, and Sc from TDWA, including the chemical precipitation, solvent extraction, ion exchange, liquid membrane separation, and membrane electrolysis. Moreover, the combined technologies for multi-metal separation, including multi-step selective extraction, co-extraction and step stripping, and extraction-precipitation combined technology, are also highlighted. Solvent extraction has good adaptability to multi-metals by using various extractants. Future research should prioritize the development of selective extractants and novel technologies for the separation of metals from the high-acidity and low-concentration systems. The synergistic recovery of critical rare metals such as niobium (Nb) and yttrium (Y) should also be concerned. This review provides guidance for the selection of appropriate methods for metal recovery from TDWA.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"234 ","pages":"Article 109781"},"PeriodicalIF":5.0000,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Critical metals recovery from titanium dioxide waste acids (TDWA): A brief review\",\"authors\":\"Bingbing Liu , Yunyun Chen , Peidong Yang , Shengpeng Su , Wenjuan Wang , Shuzhen Yang , Yanfang Huang , Hu Sun , Guihong Han\",\"doi\":\"10.1016/j.mineng.2025.109781\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Titanium dioxide waste acid (TDWA) is an inevitable hazardous by-product in the titanium dioxide (TiO<sub>2</sub>) production. The substantial emission volume of TDWA, characterized by high acidity and diverse metal compositions, presents considerable risks of environmental pollution and resource wastage. The metals recovery from TDWA has emerged as a critical challenge for the green sustainable development of TiO<sub>2</sub> industry. After literature analysis, numerous literatures are focused on the separation of a single metal. Therefore, this work systematically reviews the recovery technologies of simplex Fe, Ti, V, and Sc from TDWA, including the chemical precipitation, solvent extraction, ion exchange, liquid membrane separation, and membrane electrolysis. Moreover, the combined technologies for multi-metal separation, including multi-step selective extraction, co-extraction and step stripping, and extraction-precipitation combined technology, are also highlighted. Solvent extraction has good adaptability to multi-metals by using various extractants. Future research should prioritize the development of selective extractants and novel technologies for the separation of metals from the high-acidity and low-concentration systems. The synergistic recovery of critical rare metals such as niobium (Nb) and yttrium (Y) should also be concerned. This review provides guidance for the selection of appropriate methods for metal recovery from TDWA.</div></div>\",\"PeriodicalId\":18594,\"journal\":{\"name\":\"Minerals Engineering\",\"volume\":\"234 \",\"pages\":\"Article 109781\"},\"PeriodicalIF\":5.0000,\"publicationDate\":\"2025-09-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Minerals Engineering\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0892687525006090\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Minerals Engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0892687525006090","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
Critical metals recovery from titanium dioxide waste acids (TDWA): A brief review
Titanium dioxide waste acid (TDWA) is an inevitable hazardous by-product in the titanium dioxide (TiO2) production. The substantial emission volume of TDWA, characterized by high acidity and diverse metal compositions, presents considerable risks of environmental pollution and resource wastage. The metals recovery from TDWA has emerged as a critical challenge for the green sustainable development of TiO2 industry. After literature analysis, numerous literatures are focused on the separation of a single metal. Therefore, this work systematically reviews the recovery technologies of simplex Fe, Ti, V, and Sc from TDWA, including the chemical precipitation, solvent extraction, ion exchange, liquid membrane separation, and membrane electrolysis. Moreover, the combined technologies for multi-metal separation, including multi-step selective extraction, co-extraction and step stripping, and extraction-precipitation combined technology, are also highlighted. Solvent extraction has good adaptability to multi-metals by using various extractants. Future research should prioritize the development of selective extractants and novel technologies for the separation of metals from the high-acidity and low-concentration systems. The synergistic recovery of critical rare metals such as niobium (Nb) and yttrium (Y) should also be concerned. This review provides guidance for the selection of appropriate methods for metal recovery from TDWA.
期刊介绍:
The purpose of the journal is to provide for the rapid publication of topical papers featuring the latest developments in the allied fields of mineral processing and extractive metallurgy. Its wide ranging coverage of research and practical (operating) topics includes physical separation methods, such as comminution, flotation concentration and dewatering, chemical methods such as bio-, hydro-, and electro-metallurgy, analytical techniques, process control, simulation and instrumentation, and mineralogical aspects of processing. Environmental issues, particularly those pertaining to sustainable development, will also be strongly covered.