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Preparation of Ammoniated Cellulose Aerogel and Its Adsorption Behavior for p-Arsanilic Acid
Received:April 21, 2022  
DOI：10.11980/j.issn.0254-508X.2022.09.004
Key Words:cellulose-based aerogel  polyethyleneimine  adsorption  p-arsanilic acid
Fund Project:国家自然科学基金面上项目（21577018）；福建船政交通职业学院科研项目（000201000-X19108002）。
Author NameAffiliationPostcode
ZHENG Xueqin School of Safety and Environment， Fujian Chuanzheng Communications College， Fuzhou， Fujian Province， 350007 350007
WU Zhihao College of Environmental and Safety Engineering， Fuzhou University， Fuzhou， Fujian Province， 350108 350108
YANG Guifang* Fujian Key Lab of Marine Biodiversity Conservation and Sustainable Utilization， Fuzhou， Fujain Province， 350108
Institute of Oceanography， Minjiang University， Fuzhou， Fujian Province， 350108 		350108
YE Xiaoxia College of Environmental and Safety Engineering， Fuzhou University， Fuzhou， Fujian Province， 350108 350108
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Abstract:A functionalized cellulose-based aerogel （Cell@PEI） with high adsorption efficiency for p-arsanilic acid （p-ASA） was fabricated by crosslinking surface ammoniated polyethyleneimine （PEI） with cellulose. The results showed that the three-dimensional massive Cell@PEI had a unique porous structure with a large specific surface area of 241.4 m2/g. Moreover， the introduction of PEI enriched the functional groups on the surface of the aerogel， enhanced the electrostatic interaction and hydrogen bonding in Cell@PEI， promoting the adsorption towards p-ASA. The adsorption capacity of Cell@PEI was 205.6 mg/g in maximum， which was in accordance with the Freundlich adsorption isotherm model and pseudo-second-order adsorption kinetics model. In addition， the removal of p-ASA was still above 70% by Cell@PEI aerogel after desorption and regeneration in NaOH solution for 5 times.
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