{"title":"Effect of Electroplating Sludge on the Iron Ore Sintering: Mineralization, Yield and Gaseous Emission","authors":"Yinhua Tang, Chengyi Ding, Xuchao Wang, Xiaoqing Xu, Yue Sun, Hongming Long, Rende Chang, Sheng Xue, Chunlong Fan","doi":"10.1002/srin.202400441","DOIUrl":null,"url":null,"abstract":"<p>Electroplating sludge (ES), the inevitable by-product of electroplating wastewater treatment processes, has been conventionally managed via solidification landfilling or thermal processing; these methods may engender secondary environmental pollutants. This study proposes an innovative approach using iron ore sintering for effective ES treatment. The study reveals that incorporating 1.0% ES reduces the yield quality of the sintered ore, yet it remains within acceptable thresholds. It is noteworthy that when the addition of ES is 0.5%, it not only increases the sinter yield from 68.57% to 69.23% but also enhances the productivity from 1.19 to 1.32 t (m<sup>2</sup> h)<sup>−1</sup>. Furthermore, the consumption of solid fuel decreases to 48.01 kg t<sup>−1</sup>. Additionally, the treatment method significantly reduced the emissions of CO and NO<sub><i>x</i></sub> in the sintering flue gas, with the average concentrations decreasing from 12681.32 to 9744.51 ppm for CO and from 244.81 to 161.11 ppm for NO<sub><i>x</i></sub>. This study investigates the migration and transformation mechanisms of nickel and chlorine elements in ES by conducting inductively coupled plasma analysis on the sintered raw materials and their products, as well as scanning electron microscopy with energy dispersive X-ray spectroscopy analysis on the sinter ash.</p>","PeriodicalId":1,"journal":{"name":"Accounts of Chemical Research","volume":null,"pages":null},"PeriodicalIF":16.4000,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accounts of Chemical Research","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/srin.202400441","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Electroplating sludge (ES), the inevitable by-product of electroplating wastewater treatment processes, has been conventionally managed via solidification landfilling or thermal processing; these methods may engender secondary environmental pollutants. This study proposes an innovative approach using iron ore sintering for effective ES treatment. The study reveals that incorporating 1.0% ES reduces the yield quality of the sintered ore, yet it remains within acceptable thresholds. It is noteworthy that when the addition of ES is 0.5%, it not only increases the sinter yield from 68.57% to 69.23% but also enhances the productivity from 1.19 to 1.32 t (m2 h)−1. Furthermore, the consumption of solid fuel decreases to 48.01 kg t−1. Additionally, the treatment method significantly reduced the emissions of CO and NOx in the sintering flue gas, with the average concentrations decreasing from 12681.32 to 9744.51 ppm for CO and from 244.81 to 161.11 ppm for NOx. This study investigates the migration and transformation mechanisms of nickel and chlorine elements in ES by conducting inductively coupled plasma analysis on the sintered raw materials and their products, as well as scanning electron microscopy with energy dispersive X-ray spectroscopy analysis on the sinter ash.
期刊介绍:
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.