锆基碳基纳米复合材料的制备及吸附脱除废水中的阿散酸  

Zr-based and C-based nanocomposites for adsorptive removal of arsanilic acid from wastewater

作　　者：赵红杰 尤楠 ZHAO Hong-jie;YOU Nan(Liaoning Institute of Education,Shenyang 110032,China;College of Petrochemical Engineering,Liaoning Petrochemical University,Fushun 113001,China)

机构地区：[1]辽宁教育学院,辽宁沈阳110032 [2]辽宁石油化工大学石油化工学院,辽宁抚顺113001

出　　处：《化学研究与应用》2022年第8期1891-1897,共7页Chemical Research and Application

基　　金：辽宁省自然科学基金-沈阳材料科学国家(联合)实验室联合开放基金(2015021019)资助。

摘　　要：阿散酸作为一种兽药,可降解为剧毒无机砷,对环境和食品安全有害。本文通过热解法将纳米氧化锆有效地沉积在榛壳活性炭上,制备了碳基锆基纳米复合材料(ZrO_(2)@AC),表征了其形貌和结构,研究了pH值、吸附时间、阿散酸的初始浓度、吸附温度等因素对ZrO_(2)@AC吸附阿散酸的影响。结果表明,ZrO_(2)@AC吸附阿散酸的最佳pH范围为6-9,20 min就能达到吸附平衡,高的吸附温度有利于ZrO_(2)@AC吸附阿散酸;293K下,ZrO_(2)@AC对阿散酸的吸附容量为783.1 mg·g ^(-1);ZrO_(2)@AC对阿散酸的吸附符合Freundlich和准二级动力学方程。p-Arsanilic acid as veterinary drug can be degraded into highly toxic inorganic arsenic,which is harmful to the environment and food safety.In this wok,the Zr-based and C-based nanocomposites(ZrO_(2)@AC)were prepared through depositing the nano-sized zirconia on hazelnut shell-based activated carbon by pyrolysis method.Their morphology and structure were characterized.The effects of pH,adsorptive time,initial concentration of p-arsanilic acid and adsorptive temperature on the removal of p-arsanilic acid were tested.The results show that the optimum pH range for the adsorption of p-arsanilic acid is 6-9.The adsorption equilibrium can be reached within 20 min.Higher adsorptive temperature is conducive to the adsorption of p-arsanilic acid by the ZrO_(2)@AC.The adsorption capacity of p-arsanilic acid by the ZrO_(2)@AC is 783.1 mg·g^(-1) at 20℃.The adsorption of p-arsanilic acid by the ZrO_(2)@AC follows well with Freundlich and pseudo-second-order equations.

关 键 词：纳米复合材料 有机砷 吸附去除 

分 类 号：O647.3[理学—物理化学]