期刊
BIORESOURCE TECHNOLOGY
卷 284, 期 -, 页码 197-203出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2019.03.096
关键词
Tetracycline; Biochar; Pyrolysis temperature; PAHs; Adsorption mechanism
资金
- Marine Research and Development, National Kaohsiung University of Science and Technology [107M01]
The main objective of this study was to evaluate the effect of different pyrolysis temperatures on the formation of polycyclic aromatic hydrocarbons (PAHs) in biochar originated spent coffee ground (SCG) and the tetracycline (TC) adsorption behavior of biochar in water. The results showed that biochar synthesized at 500 degrees C (SCG 500) contained low PAH5 (600 mu g kg(-1)) and the highest TC adsorption efficiency. In addition, the characteristics, influencing factors on TC adsorption, and the related mechanisms of SCG 500 were comprehensively investigated. The results showed that the highest efficiency was observed at pH of 7 and the presence of ions in salinity solution reduced the adsorption capacity of SCG 500. The electrostatic interaction, hydrogen bonding, and pi-EDA were the major adsorption mechanisms. Safety PAH5 level, low-cost, widely material sources and high TC removal capacity suggested that SCG 500 was a promising environmentally friendly effective absorbent.
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