吸附
水溶液
傅里叶变换红外光谱
化学
热解
解吸
烧焦
表面改性
生物炭
X射线光电子能谱
核化学
化学工程
有机化学
物理化学
工程类
作者
Pei Liu,Wujun Liu,Hong Jiang,Jie‐Jie Chen,Wen‐Wei Li,Han‐Qing Yu
标识
DOI:10.1016/j.biortech.2012.06.085
摘要
In this work, bio-char, a mass productive by-product of biomass fast pyrolysis, was adopted as an adsorbent to remove tetracycline (TC) from aqueous solution. To enhance the adsorption capacity, a simple modification of bio-char with acid and alkali was carried out. Bio-char samples were characterized by Fourier transform infrared (FTIR), X-ray photoelectron spectroscopy (XPS), and nitrogen adsorption–desorption isotherm. The results show that the alkali treated bio-char possesses larger surface area than those of raw and acid treated bio-chars, and accordingly exhibits a more excellent adsorption performance (58.8 mg/g) than the other two bio-chars and other adsorbents reported previously. The graphite-like structure of bio-char facilitates the formation of π–π interactions between ring structure in tetracycline molecule and graphite-like sheets. The surface area showed significant effects on TC adsorption as well as O-containing functional groups, whereas the initial pH of solution has small effects on TC adsorption under the experimental conditions.
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