The application of freeze-dried and cross-linked lignin in water treatment

CHEN Fenggui; LI Jiao; HUANG Lu; LIU Zhiheng; LI Xiaoyan; YANG Li

doi:10.13471/j.cnki.acta.snus.2019.02.013

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The application of freeze-dried and cross-linked lignin in water treatment

更新时间：2023-12-11

- The application of freeze-dried and cross-linked lignin in water treatment
- Acta Scientiarum Naturalium Universitatis SunYatseni Vol. 58, Issue 2, Pages: 103-109(2019)
- 作者机构：
  
  长江师范学院化学化工学院∥武陵山片区绿色发展协同创新中心,重庆,408100
- 作者简介：
- 基金信息：
- DOI：10.13471/j.cnki.acta.snus.2019.02.013
  CLC：
- Published：2019，
  
  Published Online：25 March 2019，
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CHEN Fenggui, LI Jiao, HUANG Lu, et al. The application of freeze-dried and cross-linked lignin in water treatment. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 58(2):103-109(2019)
DOI：

CHEN Fenggui, LI Jiao, HUANG Lu, et al. The application of freeze-dried and cross-linked lignin in water treatment. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 58(2):103-109(2019) DOI： 10.13471/j.cnki.acta.snus.2019.02.013.

摘要

生物质材料木质素由于富含酚羟基可应用于水体污染物的吸附，为改进木质素分子由于容易分散或溶解于水体中造成对环境的污染，通过戊二醛等进行交联避免了木质素分子对水体的溶解与扩散，通过脱甲基反应增加了木质素分子结构中的酚羟基基团数量，以及通过冷冻干燥技术显著提高材料的比表面积（由0.002 m

/g增加到0.826 m

/g），使交联木质素的吸附容量由2.0 mg/g增加至19.2 mg/g，显著提高了木质素材料对污染物的吸附性能。

Abstract

Lignin is a natural chemical containing abundant catechol groups

which can be used to remove the organic pollutant and heavy metal ion. In order to avoid its dispersion in water

lignin was cross-linked with glutaraldehyde (GA). Furthermore

lignin was demethylated to enhance the phenol group in the structure

and surface area of modified lignin was also significantly increased by freeze-drying method from 0.002 m

/g to 0.826 m

which remarkably improves the adsorption property of lignin on rhodamine B with the adsorption capacity increased from 2.0 mg/g to 19.2 mg/g.

关键词

木质素改性脱甲基反应交联反应冷冻干燥罗丹明B染料吸附

Keywords

lignin modificationdemethylationcrosslinkingfreeze-dryingrhodamine Bdye adsorption

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Visible photocatalytic degradation of rhodamine B by a photo fenton-like system consisting of PW₁₁O₃₉Fe(Ⅲ)(H₂O)^4-/H₂O₂

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