| 학회 | 한국화학공학회 |
| 학술대회 | 2019년 가을 (10/23 ~ 10/25, 대전컨벤션센터) |
| 권호 | 25권 2호, p.1388 |
| 발표분야 | 미립자공학 (Fine Particles Technology) |
| 제목 | Silanol-rich Ordered Mesoporous Silica Modified Thiol Group for Enhanced Recovery Performance of Au(III) in Acidic Leachate Solution |
| 초록 | We present a new approach to enhance the recovery performance of Au(III) using thiol-functionalized adsorbents in acidic leachate solution. Ordered mesoporous silicas(OMS) with abundant surface silanol were obtained from mine tailings by solvent extraction. Overall, the surface silanol groups had the greatest effect on sulfur density and content under the conditions for functionalization with 3-mercaptopropyl-trimethoxysilane. Furthermore, Si-OH-rich OMS functionalized with thiol exhibited greater sulfur content and higher Au(III) adsorption capacity in a single-component solution. These are attributed to the high sulfur content and its increased uniformity in Si-OH-rich OMS adsorbents, which increased the inward diffusion of Au(III) and effectively improved its accessibility to the activated sites. This work was supported by the National Research Foundation of Korea Grant funded by the Korean Government (NRF-2017R1C1B2011235) and the Korea Institute of Geoscience and Mineral Resources (KIGAM, 19-6825). |
| 저자 | 한요셉, 김성민 |
| 소속 | 한국지질자원(연) |
| 키워드 | 미립자; 다기능성 |
| VOD | VOD 보기 |
| 원문파일 | 초록 보기 |
