简便合成铜(II)浸渍生物炭，增强其从水中去除盐酸多西环素的吸附活性。
Facile synthesis of Cu(II) impregnated biochar with enhanced adsorption activity for the removal of doxycycline hydrochloride from water.
机构信息
College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China.
College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China.
出版信息
Sci Total Environ. 2017 Aug 15;592:546-553. doi: 10.1016/j.scitotenv.2017.03.087. Epub 2017 Mar 17.
In this study, the effect factors and mechanisms of doxycycline hydrochloride (DOX) adsorption on copper nitrate modified biochar (Cu-BC) was investigated. Cu-BC absorbent was synthesized through calcination of peanut shells biomass at 450°C and then impregnation with copper nitrate. The Cu-BC has exhibited excellent sorption efficiency about 93.22% of doxycycline hydrochloride from aqueous solution, which was double higher than that of the unmodified biochar. The experimental results suggest that the adsorption efficiency of DOX on the Cu-BC is dominated by the strong complexation, electrostatic interactions between DOX molecules and the Cu-BC samples. Comprehensively considering the cost, efficiency and the application to realistic water, the Cu-BC hold the significant potential for enhancing the effectiveness to remove DOX from water.
在这项研究中，考察了盐酸多西环素（DOX）在硝酸铜改性生物炭（Cu-BC）上吸附的影响因素和机制。Cu-BC 吸附剂是通过在 450°C 下煅烧花生壳生物质，然后用硝酸铜浸渍合成的。Cu-BC 对水溶液中的盐酸多西环素有极好的吸附效率，约为 93.22%，比未改性的生物炭高两倍。实验结果表明，DOX 在 Cu-BC 上的吸附效率主要由 DOX 分子与 Cu-BC 样品之间的强络合、静电相互作用所决定。综合考虑成本、效率以及在实际水样中的应用，Cu-BC 具有提高从水中去除 DOX 的效果的巨大潜力。
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