Jaqueline J. S. Soares, Genesis Herrera and Debora F. Rodrigues*,
{"title":"","authors":"Jaqueline J. S. Soares, Genesis Herrera and Debora F. Rodrigues*, ","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"2 6","pages":"XXX-XXX 2305–2315"},"PeriodicalIF":0.0,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acssusresmgt.5c00049","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144479823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Leo Gutierrez*, Francis Kotoka, Jonathan Mendez, Maarten Bossuyt, Abdulsalam Alhadidi, Afroditi Kourou, Yi Ouyang, Kevin M. Van Geem, Priscila Valverde and Emile Cornelissen,
{"title":"","authors":"Leo Gutierrez*, Francis Kotoka, Jonathan Mendez, Maarten Bossuyt, Abdulsalam Alhadidi, Afroditi Kourou, Yi Ouyang, Kevin M. Van Geem, Priscila Valverde and Emile Cornelissen, ","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"2 6","pages":"XXX-XXX 2305–2315"},"PeriodicalIF":0.0,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acssusresmgt.5c00074","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144479828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yun-Ho Jin, Hee-Seon Kim, Dae-Hwan Jang and Jae-Kyo Yang*,
{"title":"Selective Leaching and Recovery of Collector Metals from PGM-Containing Waste Using Low-Concentration Hydrochloric Acid","authors":"Yun-Ho Jin, Hee-Seon Kim, Dae-Hwan Jang and Jae-Kyo Yang*, ","doi":"10.1021/acssusresmgt.5c00020","DOIUrl":"https://doi.org/10.1021/acssusresmgt.5c00020","url":null,"abstract":"<p >The increasing global demand for platinum-group metals (PGMs) from the automotive, electronics, and hydrogen fuel-cell industries necessitates efficient recycling technologies for materials containing PGMs. This study proposes an innovative method that enhances PGM recycling by combining the pyrometallurgical and hydrometallurgical processes. This method significantly reduced the aqua-regia consumption and curbed environmental emissions, such as hazardous NO<sub><i>x</i></sub>/SO<sub><i>x</i></sub> emissions. In addition, it increased the iridium content in the raw material from ∼0.62 wt % to as high as 2.5 wt %, simplifying subsequent PGM extraction. Na<sub>2</sub>CO<sub>3</sub> precipitation was employed to recover leached collector metals from the solution as metal oxides, achieving an exceptionally high rate of recovery (≥99%) from the selective collector-metal leachate. The proposed method promotes HCl regeneration and reuse by incorporating an acid regeneration plant, thereby laying the foundation for a closed-loop system that can significantly reduce raw material consumption and environmental emissions. This innovative approach maximizes resource efficiency by targeting the near-complete recovery of valuable metals while minimizing waste. These quantifiable improvements in recovery efficiency and environmental performance underscore the potential of this process as a sustainable and economically competitive strategy for industrial-scale PGM recycling.</p>","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"2 7","pages":"1204–1211"},"PeriodicalIF":0.0,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144808698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Impact of Temperature and Residence Time on the Recovery of Isoprene through Pyrolysis of Polyisoprene Rubber","authors":"Emmanuel Awosu, Yuka Hirano, Shogo Kumagai*, Marino Itoda, Akira Okuno, Seiichi Tahara, Masahiro Hojo, Yuko Saito and Toshiaki Yoshioka, ","doi":"10.1021/acssusresmgt.5c00177","DOIUrl":"https://doi.org/10.1021/acssusresmgt.5c00177","url":null,"abstract":"<p >Pyrolysis is increasingly garnering attention as a viable process for recovering valuable resources from used tires. In this study, we examined the recovery of isoprene through pyrolysis of used tires and assessed the influence of the pyrolysis conditions on product yields. Polyisoprene-based tire rubber containing carbon black (CB) was subjected to pyrolysis in a tubular reactor at different temperatures and residence times to recover the isoprene monomer. The highest isoprene monomer yield (13.9 wt %) was achieved at 800 °C and a residence time of 2.7 s, whereas upon increasing temperature and residence time the yield decreased. At 500 °C, the predominant oligomers comprised components with isoprene skeletons, whereas at 800 °C, a more pronounced thermal decomposition occurred, leading to the generation of higher molecular weight polycyclic aromatic compounds. The molecular weight distribution of the products collected from the reactor tube and oil trap exhibited a marked decrease as the pyrolysis temperatures increased, shifting from <i>M</i><sub>w</sub> = 1000 at 500 °C to <i>M</i><sub>w</sub> = 600 at 700 °C. Our results highlight the importance of exploring the pyrolysis conditions that afford low molecular weight compounds, facilitating the degradation of the isoprene skeleton in the oligomer and thus increasing the isoprene yield.</p><p >Enhancing the recovery of isoprene through high-temperature pyrolysis of used tires represents a significant advancement in sustainable material recovery and environmental waste reduction.</p>","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"2 7","pages":"1319–1327"},"PeriodicalIF":0.0,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acssusresmgt.5c00177","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144808620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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