磁性活性炭的制备及其对邻苯二甲酸二丁酯的吸附冯竹青,曹鑫,陈辉伦*(北京科技大学能源与环境工程学院,北京100083)摘要:由于具备磁分离特性,磁性活性炭可以克服活性炭与水难以分离的缺点。本文采用化学共沉淀法制备了三种磁性活性炭并用于邻苯二甲酸二丁酯(DBP)吸附研究。研究发现,磁性活性炭的吸附效果虽然比活性炭稍差,但是依然具有良好的吸附效果。当吸附剂用量为0.4g/L时,在25°C、150rpm及不调节pH的条件下吸附3h后,磁性活性炭的DBP吸附量可达164.1mg/g。随着pH和温度的降低,磁性活性炭DBP的吸附效果变好,而且其吸附动力学与拟二级模型的拟合效果更好,吸附等温线更符合Freundlich模型。关键词:吸附;磁性活性炭;吸附等温线;吸附动力学;邻苯二甲酸二丁酯中图分类号:X52文献标志码:A文章编号:1007-4260(2023)01-0009-07PreparationofMagneticActivatedCarbonandItsAdsorptionofDibutylPhthalateFENGZhuqing,CAOXin,CHENHuilun*(SchoolofEnergyandEnvironmentalEngineering,UniversityofScienceandTechnologyBeijing,Beijing100083,China)Abstract:Duetothemagneticseparationproperty,magneticactivatedcarboncanovercomethedisadvantagethatactivat-edcarbonisdifficulttoseparatefromwater.Inthisstudy,threekindsofmagneticactivatedcarbonpreparedbychemicalco-precipitationmethodareusedtoadsorbdibutylphthalate(DBP).Itisfoundthattheadsorptioneffectofmagneticactivatedcarbonisslightlyworsethanthatofactivatedcarbon,butstillhasgoodadsorptioneffect.Whentheamountofadsorbentwas0.4g/L,theadsorptioncapacityofmagneticactivatedcarboncanreach164.1mg/gafter3hoursofadsorptionat25°C,150rpmwithoutpHadjustment.WiththedecreaseofpHandtemperature,theadsorptioneffectofmagneticactivatedcarbonofDBPbecamebetter.Theadsorptionkineticsisbetterfittedtothepseudosecondordermodel,andtheadsorptionisothermismoreconsistentwiththeFreundlichmodel.Keywords:adsorption;magneticactivatedcarbon;adsorptionisotherm;adsorptionkinetics;dibutylphthalate邻苯二甲酸二丁酯(DBP)是一种常用的增塑剂[1],在使用过程中很大一部分会释放并进入环境,在海水、河水、土壤和沉积物中均有检出[2]。DBP是内分泌干扰物,具有很强的毒性,其容易通过皮肤吸附并进入人体,从而扰乱人体内分泌系统,破坏人体器...