Source Journal of CSCD
Source Journal for Chinese Scientific and Technical Papers
Core Journal of RCCSE
Included in JST China
Volume 42 Issue 5
May  2024
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LENG Jiewen, SHI Ke, WANG Xuejing, KOU Wei, FU Xiaowei, SUN Zhaonan. ADSORPTION OF TETRACYCLINE ON BIOCHAR PREPARED FROM MUNICIPAL SLUDGE[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(5): 75-82. doi: 10.13205/j.hjgc.202405010
Citation: LENG Jiewen, SHI Ke, WANG Xuejing, KOU Wei, FU Xiaowei, SUN Zhaonan. ADSORPTION OF TETRACYCLINE ON BIOCHAR PREPARED FROM MUNICIPAL SLUDGE[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(5): 75-82. doi: 10.13205/j.hjgc.202405010

ADSORPTION OF TETRACYCLINE ON BIOCHAR PREPARED FROM MUNICIPAL SLUDGE

doi: 10.13205/j.hjgc.202405010
  • Received Date: 2023-08-14
    Available Online: 2024-07-11
  • In recent years, the preparation of biochar from organic waste has become a research hotspot in many fields. In this paper, biochar (MS-BC) was prepared from municipal sludge (MS) by pyrolysis, and then characterized by FT-IR, SEM, EDS, and BET. The effect of preparation and operation conditions of MS-BC on its adsorption of tetracycline was investigated. The result showed that, the MS-BC1000 prepared by high-temperature pyrolysis has developed a pore structure with a large specific surface area, and can provide abundant adsorption sites and excellent adsorption performance. The removal rate of tetracycline by MS-BC 1000 was about 98.5%, at the MS-BC dosage of 0.3 g, the adsorption time of 4 h, adsorption temperature (T) of 25 ℃, the oscillation frequency (V) of 200 r/min, the initial pH of 6, and the initial tetracycline concentration (c0) of 50 mg/L. Langmuir adsorption isotherm and Lagergren’s quasi-second-order kinetic equation can better explain the adsorption behavior of tetracycline on MS-BC, mainly due to the monolayer adsorption by polar interaction and π-π interaction. The maximum adsorption capacity was 333.3 mg/g. The findings provide a theoretical basis for the reuse of municipal sludge and the treatment of tetracycline antibiotic wastewater.
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