Amino-Functionalized Wood Aerogel for Efficient Removal of Copper Ions from Water
Developing bio-based adsorbents for efficient removal of heavy metal ions from water has attracted increasing attention due to their abundance, low cost, and sustainability. However, most of these adsorbents are in powdered or granular forms, suffering from difficult regeneration and poor recyclabil...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | International Journal of Polymer Science |
| Online Access: | http://dx.doi.org/10.1155/2021/4913226 |
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| author | Junwang Meng Hao Guan Xinjian Dai Xiaoqing Wang |
| author_facet | Junwang Meng Hao Guan Xinjian Dai Xiaoqing Wang |
| author_sort | Junwang Meng |
| collection | DOAJ |
| description | Developing bio-based adsorbents for efficient removal of heavy metal ions from water has attracted increasing attention due to their abundance, low cost, and sustainability. However, most of these adsorbents are in powdered or granular forms, suffering from difficult regeneration and poor recyclability. Here, we report a highly porous three-dimensional amino-functionalized wood aerogel for efficient heavy metal adsorption. The amino-functionalized wood aerogel was prepared from natural balsa wood via a delignification treatment, followed by TEMPO-mediated oxidation of the delignified wood and then grafting polyethylenimine (PEI) onto the oxidized cellulose skeleton. The obtained amino-functionalized wood aerogel possessed a unique porous lamellar structure with a low bulk density of 77.2 mg/cm3 and high porosity of 94.9%. Benefiting from its high porosity and the introduced amino groups on the cellulose skeleton, the amino-functionalized wood aerogel exhibited a maximum Cu(II) adsorption capacity of 59.8 mg·g−1, which was significantly higher than those of the TEMPO-oxidized wood aerogel and natural balsa wood. The adsorption process can be well described by the pseudo-second-order and Langmuir isotherm models, indicating that the Cu(II) adsorption by the PEI@wood aerogel was dominated by a monolayer chemisorption process. The developed amino-functionalized wood aerogel provides new insights for the design of efficient and low-cost monolithic absorbents for heavy metal remediation. |
| format | Article |
| id | doaj-art-fadd1a7328dc4bcf849db58495996601 |
| institution | Kabale University |
| issn | 1687-9422 1687-9430 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Polymer Science |
| spelling | doaj-art-fadd1a7328dc4bcf849db584959966012025-02-03T07:23:27ZengWileyInternational Journal of Polymer Science1687-94221687-94302021-01-01202110.1155/2021/49132264913226Amino-Functionalized Wood Aerogel for Efficient Removal of Copper Ions from WaterJunwang Meng0Hao Guan1Xinjian Dai2Xiaoqing Wang3Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, ChinaResearch Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, ChinaResearch Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, ChinaResearch Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, ChinaDeveloping bio-based adsorbents for efficient removal of heavy metal ions from water has attracted increasing attention due to their abundance, low cost, and sustainability. However, most of these adsorbents are in powdered or granular forms, suffering from difficult regeneration and poor recyclability. Here, we report a highly porous three-dimensional amino-functionalized wood aerogel for efficient heavy metal adsorption. The amino-functionalized wood aerogel was prepared from natural balsa wood via a delignification treatment, followed by TEMPO-mediated oxidation of the delignified wood and then grafting polyethylenimine (PEI) onto the oxidized cellulose skeleton. The obtained amino-functionalized wood aerogel possessed a unique porous lamellar structure with a low bulk density of 77.2 mg/cm3 and high porosity of 94.9%. Benefiting from its high porosity and the introduced amino groups on the cellulose skeleton, the amino-functionalized wood aerogel exhibited a maximum Cu(II) adsorption capacity of 59.8 mg·g−1, which was significantly higher than those of the TEMPO-oxidized wood aerogel and natural balsa wood. The adsorption process can be well described by the pseudo-second-order and Langmuir isotherm models, indicating that the Cu(II) adsorption by the PEI@wood aerogel was dominated by a monolayer chemisorption process. The developed amino-functionalized wood aerogel provides new insights for the design of efficient and low-cost monolithic absorbents for heavy metal remediation.http://dx.doi.org/10.1155/2021/4913226 |
| spellingShingle | Junwang Meng Hao Guan Xinjian Dai Xiaoqing Wang Amino-Functionalized Wood Aerogel for Efficient Removal of Copper Ions from Water International Journal of Polymer Science |
| title | Amino-Functionalized Wood Aerogel for Efficient Removal of Copper Ions from Water |
| title_full | Amino-Functionalized Wood Aerogel for Efficient Removal of Copper Ions from Water |
| title_fullStr | Amino-Functionalized Wood Aerogel for Efficient Removal of Copper Ions from Water |
| title_full_unstemmed | Amino-Functionalized Wood Aerogel for Efficient Removal of Copper Ions from Water |
| title_short | Amino-Functionalized Wood Aerogel for Efficient Removal of Copper Ions from Water |
| title_sort | amino functionalized wood aerogel for efficient removal of copper ions from water |
| url | http://dx.doi.org/10.1155/2021/4913226 |
| work_keys_str_mv | AT junwangmeng aminofunctionalizedwoodaerogelforefficientremovalofcopperionsfromwater AT haoguan aminofunctionalizedwoodaerogelforefficientremovalofcopperionsfromwater AT xinjiandai aminofunctionalizedwoodaerogelforefficientremovalofcopperionsfromwater AT xiaoqingwang aminofunctionalizedwoodaerogelforefficientremovalofcopperionsfromwater |