Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering Jiangsu University, Zhenjiang 212013, China.
Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering Jiangsu University, Zhenjiang 212013, China.
J Colloid Interface Sci. 2017 Nov 1;505:858-869. doi: 10.1016/j.jcis.2017.06.062. Epub 2017 Jun 19.
Recently, antibiotics pollution has attracted more interests from many researches which causes potential risks on the ecosystem and human health. Herein, the porous carbons (PCs) was prepared by directly simultaneous carbonization/self-activation of potassium citrate at 750-900°C for chloramphenicol (CAP) removal from aqueous solution. The batch experiments were studied, which indicated that PCs prepared at 850°C, namely PCPCs-850, possessed excellent adsorption ability for CAP with a maximum adsorption amount of 506.1mgg. Additionally, PCPCs-850 showed a large BET surface area of 2337.06mg and microporosity of 89.11% by N adsorption-desorption experiment. The Langmuir and pseudo-second-order model could more precisely describe the experimental data. And thermodynamic analysis illustrated that CAP adsorption onto PCPCs-850 was an endothermic and spontaneous process. Importantly, the adsorbent exhibited good stability and regeneration after four times cycles. Based on these excellent performance, it is potential that PCPCs-850 can be used as a promising adsorbent for treating contaminants in wastewater.
最近，抗生素污染引起了许多研究人员的关注，因为它对生态系统和人类健康存在潜在风险。在此，通过在 750-900°C 下直接同时碳化/自活化柠檬酸钾，制备了多孔碳（PCs），用于从水溶液中去除氯霉素（CAP）。通过批处理实验进行了研究，结果表明，在 850°C 下制备的多孔碳（PCPCs-850）对 CAP 具有出色的吸附能力，最大吸附量为 506.1mgg。此外，通过氮气吸附-脱附实验，PCPCs-850 表现出 2337.06mg 的大 BET 表面积和 89.11%的微孔率。Langmuir 和拟二级模型可以更准确地描述实验数据。热力学分析表明，CAP 吸附到 PCPCs-850 上是一个吸热和自发的过程。重要的是，该吸附剂在经过四次循环后表现出良好的稳定性和再生能力。基于这些优异的性能，PCPCs-850 有望成为处理废水中污染物的一种有前途的吸附剂。
