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Rapid and efficient adsorption of tetracycline from aqueous solution in a wide pH range by using iron and aminoacetic acid sequentially modified hierarchical porous biochar.
Li, Xiumin; Xu, Jinlan; Shi, Jingxin; Luo, Xianxin.
Affiliation
  • Li X; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, 710055 Shaanxi, Xi'an, PR China; Key Laboratory of Northwest Water Resources, Environment and Ecology, MOE, PR China; Key Laboratory of Environmental Engineering, Shaanxi Province, PR China.
  • Xu J; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, 710055 Shaanxi, Xi'an, PR China; Key Laboratory of Northwest Water Resources, Environment and Ecology, MOE, PR China; Key Laboratory of Environmental Engineering, Shaanxi Province, PR China. Electroni
  • Shi J; Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing University of Information Science & Technology, Nanjing 210044, PR China; State Engineering Research Center of Water Resources, Harbin Institute of Technology, Harbin 150090, PR China. Electronic address:
  • Luo X; Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, PR China.
Bioresour Technol ; 346: 126672, 2022 Feb.
Article in En | MEDLINE | ID: mdl-34998926
The object of this work was to synthesize an iron and aminoacetic acid sequentially modified hierarchical porous biochar (AC-Fe@HPBC) for tetracycline (TC) removal from aqueous solution. Results showed that AC-Fe@HPBC had a larger surface area (362.5370 m2/g), developed microporous structure (0.1802 cm3/g), and numerous functional groups, which provided more adsorption sites. The maximum adsorption capacity towards TC by AC-Fe@HPBC was 457.85 mg/g, 1.43, 1.29 and 1.20-fold than that of HPBC, AC@PHBC and Fe@HPBC, respectively, and the super-fast adsorptive equilibrium was achieved within 10 min. Additionally, introducing amino and carboxyl functional groups on the AC-Fe@HPBC surface significantly broadened the operation pH range (3-11). Site energy analysis indicated TC and AC-Fe@HPBC had stronger adsorption affinity at a higher temperature. The adsorption mechanism involved pore filling, surface complexation, H-bond and π-π interaction. Moreover, the reusability experiments proved AC-Fe@HPBC as an effective adsorbent for TC removal from aqueous solution.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Water Pollutants, Chemical / Iron Language: En Journal: Bioresour Technol Journal subject: ENGENHARIA BIOMEDICA Year: 2022 Document type: Article Country of publication:

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Water Pollutants, Chemical / Iron Language: En Journal: Bioresour Technol Journal subject: ENGENHARIA BIOMEDICA Year: 2022 Document type: Article Country of publication: