Journal
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Volume 56, Issue 11, Pages 3059-3066Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.iecr.6b04683
Keywords
-
Categories
Funding
- National Natural Science Foundation of China [21677138]
- Program for Changjiang Scholars and Innovative Research Team in University PCSIRT
- Key Special Program on the S&T for the Pollution Control
- Treatment of Water Bodies [2012ZX07103-001]
Ask authors/readers for more resources
Although biochar has been intensively studied as an inexpensive adsorbent for diverse organic pollutants in aqueous solution, synchronously achieving high adsorption capacity, separability, and stability is still a challenge. Herein, we partially addressed this issue via an integrated activation and pyrolytic magnetization of sawdust hydrochar, during which the surface area of magnetic activated sawdust hydrochar (M-SDHA) increases from 1.7 to 1710 m(2) g(-1), and the weight loss decreases from 70 to 5% at 700 degrees C. Correspondingly, the maxmium adsorption capacity of M-SDHA toward tetracycline (TC) reaches 423.7 mg g(-1) and remains constant at pH 5-9. Multiple characterizations show that the fine pore structure and surface functional groups of M-SDHA were maintained during the pyrolysiS magnetization process, which is responsible for the high adsorption capacity.,In the pyrolysis magnetization process, the FeCl3 was reduced to Fe3O4 which endowed M-SDHA with magnetism and may simultaneously improve the thermostability of M-SDHA. In addition, acidic-basic stability of M-SDHA may be responsible for the stable adsorption toward TC at different pHs based on Fourier transform infrared spectroscopic results. These results along with the column adsorption experiment show that M-SDHA is an effective and practical adsorbent for TC removal.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available