苯二酚精馏釜残成型活性炭的研究

Study on Shaped Activated Carbon from Catechol Rectification Residue

王翔 顾金辉 刘清 费兆阳 陈献 崔咪芬 乔旭

Xiang Wang Jinhui Gu Qing Liu Zhaoyang Fei Xian Chen Mifen Cui Xu Qiao

南京工业大学 化工学院，江苏 南京 210009 南京工业大学 材料化学工程国家重点实验室，江苏 南京 210009 江苏省先进材料协同创新中心，江苏 南京 210009

College of Chemical Engineering，Nanjing Tech University，Nanjing Jiangsu 210009，China State Key Laboratory of Materials Oriented Chemical Engineering，Nanjing Tech University，Nanjing Jiangsu 210009，China Jiangsu National Synergetic Innovation Center for Advanced Materials，Nanjing Jiangsu 210009，China

采用精馏釜残制备活性炭是一种高效、经济的危废资源化利用策略，但是制得的活性炭一般呈粉末状，难以满足工业化应用要求。以自制的苯二酚精馏釜残粉末活性炭为原料，采用去离子水为溶剂，聚丙烯酸(PAA)、海藻酸钠(SA)和Ca2+为添加剂，制备了活性炭微球。通过调控SA、Ca2+、PAA的添加质量，考察其对活性炭微球的结构与机械强度的影响；采用X射线衍射、傅里叶变换红外光谱、拉曼光谱等表征手段，探讨活性炭微球的成型机理。以吸附四环素为工业化目的进行研究的结果表明，活性炭微球最高吸附量为257.8 mg/g；同时，经历9个月的水稳定测试，活性炭微球依然具有良好的吸附性能和机械强度。该成型策略采用绿色化、经济性原料，有效解决了粉末成型难与活性炭微球性能差的问题，为高性能材料工业化应用提供了有效的解决方案。

The preparation of activated carbon from residue of a distillation reactor is an efficient and economical strategy for the utilization of hazardous waste resources.However,the prepared activated carbon is generally powdered,which is difficult to meet the requirements of industrial application.In this work,the activated carbon microspheres were prepared based on the rectification residue activated carbon from the powders,using deionized water as the solvent and polyacrylic acid (PAA),sodium alginate (SA) and Ca2+ as the additives.The effects of SA,Ca2+ and PAA amount on the structure and mechanical strength of the activated carbon microspheres were investigated.X?ray diffraction,Fourier transform infrared spectroscopy and Raman spectroscopy were used to investigate the shaping mechanism of activated carbon microspheres.The activated carbon microspheres were applied in the tetracycline adsorption,and the maximum adsorption capacity of tetracycline was up to 257.8 mg/g.At the same time,after 9 months of water stability test,the activated carbon microspheres still had good adsorption performance and mechanical strength. This shaping strategy adopted green and economical raw materials,which could effectively solve the problems of powder shaping and poor performance of microspheres,and provide the effective solution for the industrial application of high?performance materials.

江苏省重点研发计划项目(BE2019735)

10.12422/j.issn.1006-396X.2023.03.010