生物炭
泰乐菌素
水溶液
化学
纳米-
环境化学
铜
核化学
化学工程
热解
有机化学
生物化学
抗生素
工程类
作者
Zhen Li,Miao Li,Tongli Zheng,Yandan Li,Xiang Liu
出处
期刊:Chemosphere
[Elsevier]
日期:2019-11-01
卷期号:235: 136-142
被引量:24
标识
DOI:10.1016/j.chemosphere.2019.06.091
摘要
Antibiotics and heavy metals are frequently detected simultaneously in water environment. Effective elimination methods for antibiotics and heavy metals pollution should deserve our attention. This study investigates the adsorption performance of biochar modified with nano-hydroxyapatite (nHAP) on tylosin (TYL) and Cu from water simultaneously. Composite adsorbents of nHAP and biomass, derived from three waste residues, which were wood-processing residues (WR), wheat straw (WS) and Chinese medicine residues (CMR), were prepared. According to the results of orthogonal experiment, the degree of influence of the three factors on TYL and Cu were the pyrolysis temperature > the proportion of nHAP and biomass > the sources of biomass, and pyrolysis temperature> the sources of biomass> the proportion of nHAP and biomass, respectively. The optimum conditions for nHAP@biochar were screened. At pH < 7.0, the adsorption quality of TYL increased with pH increased, while at pH > 7.0, the adsorption quality of TYL changed slightly. At low pH, Cu and TYL could compete for the same adsorption sites on nHAP@biochars. The adsorption amount of TYL and Cu were both increased with increasing of the temperature. Compared with Langmuir model, Freundlich model could better fit the TYL adsorption on nHAP@biochars, with Kf values of TYL 62.35 (mmol/kg) (L/mmol)n (WR1) and 4.84 (mmol/kg) (L/mmol)n (CMR1), respectively.
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