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| Study on Adsorption of p-Arsanilic Acid by Wattle Extract/Cellulose-Polyethylenimine Aerogel |
| Received:August 02, 2021 |
| DOI：10.11981/j.issn.1000-6842.2022.02.21 |
| Key Words:cellulose aerogel;wattle extract;polyethylenimine;adsorption;p-arsanilic acid |
| Fund Project:福建省高校产学合作项目（21577018）。 |
| Author Name | Affiliation | Postcode | | LIN Na | College of Environment and Safety Engineering， Fuzhou University， Fuzhou， Fujian Province， 350108 | 350108 | | YANG Guifang | College of Environment and Safety Engineering， Fuzhou University， Fuzhou， Fujian Province， 350108 | 350108 | | LIU Yifan | College of Environment and Safety Engineering， Fuzhou University， Fuzhou， Fujian Province， 350108
Fujian Provincial Technology Exploitation Base of Biomass Resources， Fuzhou， Fujian Province， 350108 | 350108 | | YE Xiaoxia | College of Environment and Safety Engineering， Fuzhou University， Fuzhou， Fujian Province， 350108
Fujian Provincial Technology Exploitation Base of Biomass Resources， Fuzhou， Fujian Province， 350108 | 350108 | | LIU Minghua | College of Environment and Safety Engineering， Fuzhou University， Fuzhou， Fujian Province， 350108
Fujian Provincial Technology Exploitation Base of Biomass Resources， Fuzhou， Fujian Province， 350108 | 350108 |
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| Abstract: |
| A novel functionalized cellulose aerogel was successfully prepared by sol-gel method to graft wattle extract （BWT） and polyethylenimine （PEI） on cellulose using NaOH/urea/water as solvent. Scanning electron microscopy （SEM）， specific surface area （BET） analysis， thermal analysis （TG-DTG）， etc. were used to characterize the structure and properties of the as-prepared wattle extract/cellulose-PEI aerogel （（Cell/BWT）@PEI） and its adsorption performance on p-arsanilic acid （p-ASA） was studied as well. The results showed that the specific surface area of （Cell/BWT）@PEI was 190.6 m2/g， the pore diameter 15.2 nm， and it had good thermal stability. The equilibrium adsorption capacity （Qe） of （Cell/BWT）@PEI for p-ASA was 163.3 mg/g and the removal rate was 65.3% when the initial mass concentration of p-ASA was 100 mg/L， pH value of solution 5.0， adsorption time 360 min， adsorption temperature 25℃， and dosage of （Cell/BWT）@PEI 0.4 g/L. Moreover， the adsorption of p-ASA by （Cell/BWT）@PEI was a chemical and spontaneous process， conforming more to the Freundlich isothermal adsorption equation. The results of adsorption regeneration experiments showed that after 5 cycles of regeneration， the Qe of （Cell/BWT）@PEI for p-ASA was 107.2 mg/g and the removal rate was 42.9%. |
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