{"title":"从赤泥中提取铁磁性材料的新型清洁生产方法:工艺设计、热力学研究和环境评估","authors":"","doi":"10.1016/j.psep.2024.09.018","DOIUrl":null,"url":null,"abstract":"<div><p>The ineffective utilization of resources and the potential harm to the ecological environment are both consequences of the accumulation of red mud (RM). This study focuses on synthesizing ferromagnetic materials (FMs) through a hydrometallurgical method, using compounds containing iron (CCI) derived from RM. The study primarily focused on process design, thermodynamic analysis, and environment assessment. Effectively, this procedure resulted in the production of two varieties of FMs: Fe<sub>2</sub>O<sub>3</sub> and Fe<sub>3</sub>O<sub>4</sub>, exhibiting purities of 94.8 % and 98.6 %, correspondingly. The utilization of different concentrations of various flocculants (APAM, PAM, and CPAM) resulted in a substantial improvement in the flocculation process, with APAM demonstrating superior effectiveness. Based on the results of environmental assessments, it was found that the levels of toxic and hazardous substances in the residual solids were below 0.01 wt%, while in wastewater they were below 10<sup>−6</sup> mol L<sup>−1</sup>. Furthermore, the study put forward mechanisms to explain phase transformation, flocculation, and magnetic separation. The thermodynamic calculation provided insights into the energy variation and reaction extent during the controllable synthesis of FMs. The current study provides a feasible resolution to improve the efficiency of resource recovery and reduce environmental pollution, thus encouraging the adoption of cleaner production methods.</p></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":null,"pages":null},"PeriodicalIF":6.9000,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A novel cleaner production for ferromagnetic materials from red mud: Process design, thermodynamic study and environment assessment\",\"authors\":\"\",\"doi\":\"10.1016/j.psep.2024.09.018\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The ineffective utilization of resources and the potential harm to the ecological environment are both consequences of the accumulation of red mud (RM). This study focuses on synthesizing ferromagnetic materials (FMs) through a hydrometallurgical method, using compounds containing iron (CCI) derived from RM. The study primarily focused on process design, thermodynamic analysis, and environment assessment. Effectively, this procedure resulted in the production of two varieties of FMs: Fe<sub>2</sub>O<sub>3</sub> and Fe<sub>3</sub>O<sub>4</sub>, exhibiting purities of 94.8 % and 98.6 %, correspondingly. The utilization of different concentrations of various flocculants (APAM, PAM, and CPAM) resulted in a substantial improvement in the flocculation process, with APAM demonstrating superior effectiveness. Based on the results of environmental assessments, it was found that the levels of toxic and hazardous substances in the residual solids were below 0.01 wt%, while in wastewater they were below 10<sup>−6</sup> mol L<sup>−1</sup>. Furthermore, the study put forward mechanisms to explain phase transformation, flocculation, and magnetic separation. The thermodynamic calculation provided insights into the energy variation and reaction extent during the controllable synthesis of FMs. The current study provides a feasible resolution to improve the efficiency of resource recovery and reduce environmental pollution, thus encouraging the adoption of cleaner production methods.</p></div>\",\"PeriodicalId\":20743,\"journal\":{\"name\":\"Process Safety and Environmental Protection\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":6.9000,\"publicationDate\":\"2024-09-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Process Safety and Environmental Protection\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0957582024011376\",\"RegionNum\":2,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Process Safety and Environmental Protection","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0957582024011376","RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
A novel cleaner production for ferromagnetic materials from red mud: Process design, thermodynamic study and environment assessment
The ineffective utilization of resources and the potential harm to the ecological environment are both consequences of the accumulation of red mud (RM). This study focuses on synthesizing ferromagnetic materials (FMs) through a hydrometallurgical method, using compounds containing iron (CCI) derived from RM. The study primarily focused on process design, thermodynamic analysis, and environment assessment. Effectively, this procedure resulted in the production of two varieties of FMs: Fe2O3 and Fe3O4, exhibiting purities of 94.8 % and 98.6 %, correspondingly. The utilization of different concentrations of various flocculants (APAM, PAM, and CPAM) resulted in a substantial improvement in the flocculation process, with APAM demonstrating superior effectiveness. Based on the results of environmental assessments, it was found that the levels of toxic and hazardous substances in the residual solids were below 0.01 wt%, while in wastewater they were below 10−6 mol L−1. Furthermore, the study put forward mechanisms to explain phase transformation, flocculation, and magnetic separation. The thermodynamic calculation provided insights into the energy variation and reaction extent during the controllable synthesis of FMs. The current study provides a feasible resolution to improve the efficiency of resource recovery and reduce environmental pollution, thus encouraging the adoption of cleaner production methods.
期刊介绍:
The Process Safety and Environmental Protection (PSEP) journal is a leading international publication that focuses on the publication of high-quality, original research papers in the field of engineering, specifically those related to the safety of industrial processes and environmental protection. The journal encourages submissions that present new developments in safety and environmental aspects, particularly those that show how research findings can be applied in process engineering design and practice.
PSEP is particularly interested in research that brings fresh perspectives to established engineering principles, identifies unsolved problems, or suggests directions for future research. The journal also values contributions that push the boundaries of traditional engineering and welcomes multidisciplinary papers.
PSEP's articles are abstracted and indexed by a range of databases and services, which helps to ensure that the journal's research is accessible and recognized in the academic and professional communities. These databases include ANTE, Chemical Abstracts, Chemical Hazards in Industry, Current Contents, Elsevier Engineering Information database, Pascal Francis, Web of Science, Scopus, Engineering Information Database EnCompass LIT (Elsevier), and INSPEC. This wide coverage facilitates the dissemination of the journal's content to a global audience interested in process safety and environmental engineering.