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| Preparation and Properties of High Amino Density Cellulose-based Solid Amine Adsorbent |
| Received:May 14, 2020 |
| DOI：10.11980/j.issn.0254-508X.2020.08.008 |
| Key Words:high amino density cellulose heavy metalions adsorption rapid crosslinking |
| Author Name | Affiliation | Postcode | | HE Hui | School of Light Industry and Food Engineering, Guangxi University, Nanning, Guangxi Zhuang Autonomous Region, 530004
Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control, Nanning, Guangxi Zhuang Autonomous Region, 530004 | 530004 | | ZHOU Hang | School of Light Industry and Food Engineering, Guangxi University, Nanning, Guangxi Zhuang Autonomous Region, 530004
Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control, Nanning, Guangxi Zhuang Autonomous Region, 530004 | 530004 | | XUE Fei | School of Light Industry and Food Engineering, Guangxi University, Nanning, Guangxi Zhuang Autonomous Region, 530004
Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control, Nanning, Guangxi Zhuang Autonomous Region, 530004 | 530004 | | WU Qi | School of Light Industry and Food Engineering, Guangxi University, Nanning, Guangxi Zhuang Autonomous Region, 530004
Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control, Nanning, Guangxi Zhuang Autonomous Region, 530004 | 530004 | | WANG Shuangfei | School of Light Industry and Food Engineering, Guangxi University, Nanning, Guangxi Zhuang Autonomous Region, 530004
Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control, Nanning, Guangxi Zhuang Autonomous Region, 530004 | 530004 |
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| Abstract:Using microcrystalline cellulose (MCC) as matrix and three amines with different structures (tetraethylene pentamine (TEPA), polyethyleneimine (BPEI) and amino terminated hyperbranched polyamine (HBP-NH2)) as functional reagents, three kinds of high amino density cellulose-based solid amine adsorbents with different structures were prepared by the method of "one-step rapid crosslinking" with epichlorohydrin (ECH). The structures of the three adsorbents were characterized, the adsorption properties and mechanism for Cr(VI) were invertigated. The results showed that the high amino density of adsorbents not only guaranteed the high removal rate (above 99%) of high concentration Cr(VI) (100 mg/L), but also achieved the complete removal of low concentration Cr(VI) (1 mg/L). The residual Cr(VI) concentration in water after removing Cr(VI) met the current national drinking water standard (GB 5749—2006). Through the structural design and optimization of amines, the adsorbent with hyperbranched structure could remove Cr(VI) quickly and efficiently. After six times of recycling, the removal rate of the adsorbent for Cr(VI) was still above 98%, which indicates that the adsorbents have good application prospects. |
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