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作者:

Shi, Tiantian (Shi, Tiantian.) | Ma, Liwen (Ma, Liwen.) | Xi, Xiaoli (Xi, Xiaoli.) (学者:席晓丽) | Nie, Zuoren (Nie, Zuoren.)

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摘要:

Separation of tungsten (W) and molybdenum (Mo) is a key challenge for the efficient and high-value-added utilization and recycling of W and Mo resources. The clean and recyclable separation technology has been the research focus in this field. To improve the effectiveness of W-Mo adsorption and separation and avoid sulfurization in the ion exchange method, a functional polytertiary amine macroporous resin (TA12-MR) was designed and prepared first time. Optimal synthesis conditions were determined by optimizing preparation time, temperature, and modifier addition, FTIR, XRD, SEM and BET characterizations revealed that TA12-MR exhibited enriched amine groups, dense structure and abundant pores. After optimizing the adsorption conditions, Q(WMax) reached 743.6 mgg(-1), beta(W)(Mo) reached 20.1 at pH = 7.4, T = 25 degrees C, t = 4 h, n(CTAB)/n(Mo) = 0.5). The adsorption isotherms and kinetics fitting results indicated that the adsorption of W and Mo was a monolayer spontaneous chemically adsorption. The mechanism was found to be a combination of electrostatic adsorption and chemisorption. Firstly, W migrated near N which on TA12-MR, followed by HWO4- replaced Cl- for ion exchange and coordinated with N. The adsorption property remained high with Q(W) = 849 mgg(-1), Q(Mo) = 85 mgg(-1), after ten adsorption-desorption cycles. It is an environmentally friendly and high recyclable method without sulfurization and H2S generation. TA12-MR is expected to be a clean, efficient, reusable, and green material, which can be applied to the efficient separation and comprehensive recovery of W and Mo secondary resources, to provide support for solving the problem of W-Mo separation.

关键词:

Separation Adsorption Molybdenum Functional resin Tungsten

作者机构:

  • [ 1 ] [Shi, Tiantian]Beijing Univ Technol, Fac Mat & Mfg, Collaborat Innovat Ctr Capital Resource Recycling, Beijing 100124, Peoples R China
  • [ 2 ] [Ma, Liwen]Beijing Univ Technol, Fac Mat & Mfg, Collaborat Innovat Ctr Capital Resource Recycling, Beijing 100124, Peoples R China
  • [ 3 ] [Xi, Xiaoli]Beijing Univ Technol, Fac Mat & Mfg, Collaborat Innovat Ctr Capital Resource Recycling, Beijing 100124, Peoples R China
  • [ 4 ] [Nie, Zuoren]Beijing Univ Technol, Fac Mat & Mfg, Collaborat Innovat Ctr Capital Resource Recycling, Beijing 100124, Peoples R China
  • [ 5 ] [Xi, Xiaoli]Beijing Univ Technol, Key Lab Adv Funct Mat, Minist Educ, Beijing 100124, Peoples R China
  • [ 6 ] [Nie, Zuoren]Beijing Univ Technol, Key Lab Adv Funct Mat, Minist Educ, Beijing 100124, Peoples R China
  • [ 7 ] [Ma, Liwen]Beijing Univ Technol, Natl Engn Lab Ind Big data Applicat Technol, Beijing 100124, Peoples R China
  • [ 8 ] [Nie, Zuoren]Beijing Univ Technol, Natl Engn Lab Ind Big data Applicat Technol, Beijing 100124, Peoples R China

通讯作者信息:

  • [Ma, Liwen]Beijing Univ Technol, Fac Mat & Mfg, Collaborat Innovat Ctr Capital Resource Recycling, Beijing 100124, Peoples R China;;[Xi, Xiaoli]Beijing Univ Technol, Fac Mat & Mfg, Collaborat Innovat Ctr Capital Resource Recycling, Beijing 100124, Peoples R China;;

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来源 :

SEPARATION AND PURIFICATION TECHNOLOGY

ISSN: 1383-5866

年份: 2023

卷: 332

8 . 6 0 0

JCR@2022

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SCOPUS被引频次: 11

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