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| Preparation of a Novel Spherical Cellulose Chelating Adsorbent |
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| DOI：10.11981/j.issn.1000-6842.2011.02.42 |
| Key Words:spherical cellulose; chelating adsorbent; grafting; microwave catalytic; imidazolyl |
| Fund Project:本课题由国家自然科学基金（21077024）、中国博士后基金（20070410238）、中国博士后基金（200801239）特别资助。 |
| Author Name | Affiliation | | 姚梅宾1 | 1.福州大学环境与资源学院，福建福州，350108 | | 刘明华1,2,* | 1.福州大学环境与资源学院，福建福州，350108；2.福建省生物质资源化技术开发基地，福建福州，350108 | | 刘以凡1,2 | 1.福州大学环境与资源学院，福建福州，350108；2.福建省生物质资源化技术开发基地，福建福州，350108 |
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| Abstract: |
| Viscose was prepared with masson pine kraft pulp, and the spherical cellulose beads were obtained by applying the thermal solution-gel transition technique, the cellulose beads were modified by grafting and microwave catalysis to prepare spherical cellulose adsorbent SCCA whose physical and chemical properties were identified by the modern analytical methods. The study showed that the SCCA contains caoboxyl and imidazolyl groups. The optimum modified conditions are as follows: the concentration of initiators cerium nitrate and ammonium are 9.12 mmol/L and 0.1 mol/L respectively, grafting temperature is 50℃ and grafting time is 60 min. The optimum microwave modification conditions are 4.85 mol/L of diethylenetriamine and 0.39 mol/L of the catalyst, radiating for 60 s with 600 W power. The resultant adsorption capacity of Cr3+ is 38.53 mg/g. |
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