Effect of Fe–N modification on the properties of biochars and their adsorption behavior on tetracycline removal from aqueous solution
Bioresource Technology, ISSN: 0960-8524, Vol: 325, Page: 124732
2021
- 310Citations
- 122Captures
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Metrics Details
- Citations310
- Citation Indexes310
- 310
- CrossRef112
- Captures122
- Readers122
- 122
Article Description
Tetracycline (TC) adsorption capacity on pristine biochar was limited. Biochar modification can greatly improve its adsorption amount. In this study, rice straw was mixed with FeCl 3 ·6H 2 O and urea to prepare a Fe–N modified biochar via a one-pot pyrolysis method at 700 °C. Meanwhile, pristine biochar (RSBC), urea modified biochar (N–RSBC), FeCl 3 ·6H 2 O-modified biochar (Fe–RSBC) were produced as control. More functional groups, more graphited carbon structure, and magnetic components were observed in Fe–N–RSBC. Compared with RSBC, the surface area, total pore and micropore volume of Fe–N–RSBC increased 3.4-fold, 3.0-fold and 2.3-fold, respectively. The maximum capacity of TC adsorption on Fe-N-RSBC reached 156 mg·g −1, which was 5.4 − fold, 8.2 − fold and 1.9 − fold increase to that of RSBC, N-RSBC, Fe-RSBC, respectively. The mechanism of TC adsorption on Fe-N-RSBC involved pore filling, hydrogen-bond interaction, surface complexation, and π–π interaction. Therefore, Fe-N-RSBC can be used as an effective adsorbent for TC removal from aqueous solution.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0960852421000717; http://dx.doi.org/10.1016/j.biortech.2021.124732; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85099640795&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/33493749; https://linkinghub.elsevier.com/retrieve/pii/S0960852421000717; https://dx.doi.org/10.1016/j.biortech.2021.124732
Elsevier BV
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