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Adsorption studies of tannic acid by commercial ester resin XAD-7

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Abstract

Tannic acid and its related compounds are known as refractory organic pollutants, and it can create serious problems for the environment. The adsorption and desorption studies of tannic acid on commercial resins XAD-7 and D-201 are performed, and all data indicates resin XAD-7 can be used as an effective adsorbent for removing tannic acid during water/wastewater treatment. Furthermore, adsorption thermodynamics studies indicate different adsorption mechanisms for TA on XAD-7 and D-201. FT-IR and solid state 13C-NMR spectroscopy are used to explain the adsorption force between XAD-7 and TA. It suggests that hydrogen bonding is the main adsorption force for TA. Finally, XAD-7’s adsorption capacity in the presence of different metal ions is investigated, which indicates that heavy metal ions in solutions can decrease the adsorption capacity for TA on ester resin XAD-7.

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Authors and Affiliations

  1. State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nan**g University, Nan**g, 210093, China

    **-nan Wang, Ai-min Li  (**爱民), Li Xu & Yang Zhou

  2. Research Center of Organic Toxic Substance Control and Resource reuse of Jiangsu Province, Nan**g, 210038, China

    **-nan Wang, Ai-min Li  (**爱民), Li Xu & Yang Zhou

Authors
  1. **-nan Wang
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  2. Ai-min Li  (**爱民)
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  3. Li Xu
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  4. Yang Zhou
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Corresponding author

Correspondence to Ai-min Li  (**爱民).

Additional information

This work was financially supported by the National Natural Science Fundation of China (No. 50778088) and China National Funds for Distinguished Young Scientists (No. 50825802).

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Wang, Jn., Li, Am., Xu, L. et al. Adsorption studies of tannic acid by commercial ester resin XAD-7. Chin J Polym Sci 28, 231–239 (2010). https://doi.org/10.1007/s10118-010-9003-3

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  • DOI: https://doi.org/10.1007/s10118-010-9003-3

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