Robust amphiprotic konjac glucomannan cross-linked chitosan aerogels for efficient water remediation
Robust amphiprotic-konjac glucomannan/chitosan (AP-KGM/CS) aerogels were prepared by modification of KGM with carboxymethyl and quaternary ammonium groups, and then cross-linked with chitosan. The adsorption performance of AP-KGM/CS aerogels on the anionic dyes everacid Orange N-G (C.I. Acid Orange...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2021
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| Online Access: | https://hdl.handle.net/10356/150791 |
| _version_ | 1826120692573143040 |
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| author | Mao, Jiajun Li, Shuhui He, Chenglin Tang, Yuxin Chen, Zhong Huang, Jianying Lai, Yuekun |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Mao, Jiajun Li, Shuhui He, Chenglin Tang, Yuxin Chen, Zhong Huang, Jianying Lai, Yuekun |
| author_sort | Mao, Jiajun |
| collection | NTU |
| description | Robust amphiprotic-konjac glucomannan/chitosan (AP-KGM/CS) aerogels were prepared by modification of KGM with carboxymethyl and quaternary ammonium groups, and then cross-linked with chitosan. The adsorption performance of AP-KGM/CS aerogels on the anionic dyes everacid Orange N-G (C.I. Acid Orange O56), cationic dyes methylene blue (MB) and heavy metal ions (Pb2+, Cu2+, Cd2+) was investigated. The open porous structure of the aerogel has a significant effect on maintaining the structural stability of aerogel and promoting the diffusion and transfer of pollutants to ensure adequate contact between pollutants and adsorption sites. The adsorption equilibrium of anionic dye O56 and cationic dye MB was reached within 300 min, and the saturated adsorption capacities were 267 mg/g and 348 mg/g, respectively. Besides, the adsorption equilibrium of single metal ions Pb2+, Cu2+, and Cd2+ was reached within 120 min, and their saturated adsorption capacities were 469 mg/g, 254 mg/g and 144 mg/g, respectively. Moreover, under the competitive adsorption of three heavy metal ions, the equilibrium adsorption time of Pb2+, Cu2+, and Cd2+ in the mixed solutions (each with a concentration of 600 mg/L) was 240 min, 150 min and 70 min, respectively, and their saturated adsorption capacities were 318 mg/g, 184 mg/g and 94 mg/g, respectively. |
| first_indexed | 2024-10-01T05:20:36Z |
| format | Journal Article |
| id | ntu-10356/150791 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:20:36Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1507912023-07-14T16:01:24Z Robust amphiprotic konjac glucomannan cross-linked chitosan aerogels for efficient water remediation Mao, Jiajun Li, Shuhui He, Chenglin Tang, Yuxin Chen, Zhong Huang, Jianying Lai, Yuekun School of Materials Science and Engineering Engineering::Materials Konjac Glucomannan Chitosan Robust amphiprotic-konjac glucomannan/chitosan (AP-KGM/CS) aerogels were prepared by modification of KGM with carboxymethyl and quaternary ammonium groups, and then cross-linked with chitosan. The adsorption performance of AP-KGM/CS aerogels on the anionic dyes everacid Orange N-G (C.I. Acid Orange O56), cationic dyes methylene blue (MB) and heavy metal ions (Pb2+, Cu2+, Cd2+) was investigated. The open porous structure of the aerogel has a significant effect on maintaining the structural stability of aerogel and promoting the diffusion and transfer of pollutants to ensure adequate contact between pollutants and adsorption sites. The adsorption equilibrium of anionic dye O56 and cationic dye MB was reached within 300 min, and the saturated adsorption capacities were 267 mg/g and 348 mg/g, respectively. Besides, the adsorption equilibrium of single metal ions Pb2+, Cu2+, and Cd2+ was reached within 120 min, and their saturated adsorption capacities were 469 mg/g, 254 mg/g and 144 mg/g, respectively. Moreover, under the competitive adsorption of three heavy metal ions, the equilibrium adsorption time of Pb2+, Cu2+, and Cd2+ in the mixed solutions (each with a concentration of 600 mg/L) was 240 min, 150 min and 70 min, respectively, and their saturated adsorption capacities were 318 mg/g, 184 mg/g and 94 mg/g, respectively. Accepted version The authors thank the National Natural Science Foundation of China (21501127 and 51502185), 111 Project (No. D17005), Nantong Science and Technology Project (GY12016030), Jiangsu Advanced Textile Engineering Center Project (Project No. SPPGO[2014]22), and the funds from the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD). J. J. M and S. H. L contributed equally to this work. 2021-06-04T01:29:47Z 2021-06-04T01:29:47Z 2019 Journal Article Mao, J., Li, S., He, C., Tang, Y., Chen, Z., Huang, J. & Lai, Y. (2019). Robust amphiprotic konjac glucomannan cross-linked chitosan aerogels for efficient water remediation. Cellulose, 26(11), 6785-6796. https://dx.doi.org/10.1007/s10570-019-02549-z 0969-0239 0000-0003-4100-510X https://hdl.handle.net/10356/150791 10.1007/s10570-019-02549-z 2-s2.0-85066816882 11 26 6785 6796 en Cellulose © 2019 Springer Nature B.V. This is a post-peer-review, pre-copyedit version of an article published in Cellulose. The final authenticated version is available online at: http://dx.doi.org/10.1007/s10570-019-02549-z application/pdf |
| spellingShingle | Engineering::Materials Konjac Glucomannan Chitosan Mao, Jiajun Li, Shuhui He, Chenglin Tang, Yuxin Chen, Zhong Huang, Jianying Lai, Yuekun Robust amphiprotic konjac glucomannan cross-linked chitosan aerogels for efficient water remediation |
| title | Robust amphiprotic konjac glucomannan cross-linked chitosan aerogels for efficient water remediation |
| title_full | Robust amphiprotic konjac glucomannan cross-linked chitosan aerogels for efficient water remediation |
| title_fullStr | Robust amphiprotic konjac glucomannan cross-linked chitosan aerogels for efficient water remediation |
| title_full_unstemmed | Robust amphiprotic konjac glucomannan cross-linked chitosan aerogels for efficient water remediation |
| title_short | Robust amphiprotic konjac glucomannan cross-linked chitosan aerogels for efficient water remediation |
| title_sort | robust amphiprotic konjac glucomannan cross linked chitosan aerogels for efficient water remediation |
| topic | Engineering::Materials Konjac Glucomannan Chitosan |
| url | https://hdl.handle.net/10356/150791 |
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