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How to recover iodine more efficiently? Extraction of triiodide

文献类型：期刊论文

作者Li, Jian1,2; Zhang, Hui1,2,3,4; Xue, Tianyan3,4; Xiao, Qinggui3,4; Qi, Tao1,2,3,4; Chen, Jing5; Huang, Zhaohui1,2
刊名SEPARATION AND PURIFICATION TECHNOLOGY
出版日期2021-12-15
卷号277页码:8
关键词Iodide Solvent Extraction Triiodide Alamine336
ISSN号1383-5866
DOI10.1016/j.seppur.2021.119364
英文摘要An efficient process was proposed for the recovery of iodine via solvent extraction of triiodide (I-3(-) ) when 21% of I- was oxidized. I-3(-) and I- rather than I-2 were confirmed to be extracted into the organic phase containing Alamine336. It was found that the coordination effect was an important contributor in the extraction process. The extraction rate significantly increased with the increase of the H2O2 dosage, the phase volume ratio and the extractant concentration, whereas it decreased with the increase of equilibrium pH and temperature. The extraction mechanism was established by UV-vis spectra analysis and saturation extraction test. The extracted species were approximately 27% of I-3(-) and 73% of I-, and each of them was bonded with an extractant molecule respectively. High selectivity was also achieved as the molar ratio of I/Cl increased by 600 times after extraction. Compared with the extraction of simple iodide, the novel process exhibited a much higher efficiency (91% vs 63%). Moreover, the novel process also has an advantage over conventional air blowing with less oxidant consumption and milder temperatures.
WOS关键词RADIOACTIVE IODINE ; REMOVAL ; WATER ; ION ; ADSORPTION
资助项目Innovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM2020 DA02] ; Key Research Program of the Frontier Sciences of CAS[QYZDJ-SSW-JSC021] ; CAS Interdisciplinary Innovation Team ; Science and Technology Service Network Initiative of CAS[KFJ-SW-STS-148] ; Science and Technology Service Network Initiative of CAS[KFJ-STS-QYZD-011] ; National Natural Science Foundation of China[21506233] ; National Natural Science Foundation of China[51402303] ; National Natural Science Foundation of China[21606241] ; National Natural Science Foundation of China[21978304] ; National Natural Science Foundation of China[51374191] ; Self-deployed Projects of Ganjiang Innovation Academy, Chinese Academy of Sciences[E055A002]
WOS研究方向Engineering
语种英语
WOS记录号WOS:000701811900006
出版者ELSEVIER
资助机构Innovation Academy for Green Manufacture, Chinese Academy of Sciences ; Key Research Program of the Frontier Sciences of CAS ; CAS Interdisciplinary Innovation Team ; Science and Technology Service Network Initiative of CAS ; National Natural Science Foundation of China ; Self-deployed Projects of Ganjiang Innovation Academy, Chinese Academy of Sciences
源URL[http://ir.ipe.ac.cn/handle/122111/50360]  
专题中国科学院过程工程研究所
通讯作者Zhang, Hui; Qi, Tao
作者单位1.Chinese Acad Sci, Ganjiang Innovat Acad, Ganzhou 341000, Peoples R China
2.Jiangxi Prov Key Lab Cleaner Prod Rare Earths, Ganzhou 341000, Peoples R China
3.Chinese Acad Sci, Innovat Acad Green Manufacture, Beijing 100190, Peoples R China
4.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
5.Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R China
推荐引用方式
GB/T 7714		 Li, Jian,Zhang, Hui,Xue, Tianyan,et al. How to recover iodine more efficiently? Extraction of triiodide[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2021,277:8.
APA Li, Jian.,Zhang, Hui.,Xue, Tianyan.,Xiao, Qinggui.,Qi, Tao.,...&Huang, Zhaohui.(2021).How to recover iodine more efficiently? Extraction of triiodide.SEPARATION AND PURIFICATION TECHNOLOGY,277,8.
MLA Li, Jian,et al."How to recover iodine more efficiently? Extraction of triiodide".SEPARATION AND PURIFICATION TECHNOLOGY 277(2021):8.

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来源：过程工程研究所

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