DOI:10.19965/j.cnki.iwt.2022-0413第43卷第3期2023年3月Vol.43No.3Mar.,2023工业水处理IndustrialWaterTreatment64苯并咪唑基多孔聚合物的设计、制备及快速吸附金霉素研究张丽丽,南海,张华新(荆楚理工学院化工与制药学院,湖北荆门448000)[摘要]普通吸附剂对金霉素吸附速率慢、效率低。以苯并咪唑为功能单体,1,4-二氯苄(DCX)和1,4-联苯二氯苄(BCMBP)分别为交联剂,通过一步Friedel-Crafts反应合成了超交联聚合物HCP-DCX和HCP-BCMBP。比较发现,交联剂对聚合物的形貌、组成、孔结构都产生了重要影响,HCP-BCMBP是由纳米颗粒随机堆积连接而成的多级孔结构,其BET比表面积(1397m2/g)、孔容(1.488cm3/g)、含氮质量分数(0.96%)均显著高于HCP-DCX。因此,HCP-BCMBP对金霉素表现出更为优异的吸附性能,在pH=5,金霉素初始质量浓度为500mg/L,HCP-BCMBP投加质量浓度为1.0g/L条件下,30min内HCP-BCMBP对金霉素的吸附量可达413mg/g,与已报道的其他吸附剂相比有明显的优势。此外,分析了超交联聚合物吸附金霉素的动力学、吸附等温线及吸附机理,证实氢键、π-π作用、静电作用是主要的吸附机制。[关键词]超交联;金霉素;分级孔;吸附;动力学[中图分类号]TQ424;X703[文献标识码]A[文章编号]1005-829X(2023)03-0064-07Design,preparationofbenzimidazole-basedporouspolymersanditsrapidadsorptionofchlortetracyclineZHANGLili,NANHai,ZHANGHuaxin(CollegeofChemicalandPharmaceuticalEngineering,JingchuUniversityofTechnology,Jingmen448000,China)Abstract:Theadsorptionrateandefficiencyofchlortetracyclinebycommonadsorbentsareverylimited.Inthiswork,benzimidazoleasfunctionalmonomer,twobenzimidazole-basedhyper-crosslinkedpolymers,HCP-DCXandHCP-BCMBP,weresynthesizedbyone-stepFriedel-Craftsalkylationreactionusing1,4-benzyldichloride(DCX)and1,4-bibenzyldichloride(BCMBP)ascrosslinkingagents,respectively.Itwasfoundthatthecrosslinkingagenthadanimportanteffectonthemorphology,compositionandporestructureofpolymers.HCP-BCMBPpossessedahierarchicalporestructureformedbytherandomstackingofmassivenanoparticles.TheBETspecificsurface(1397m2/g),porevolume(1.488cm3/g)andnitrogencontent(0.96%)ofHCP-BCMBPweresignificantlyhigherthanthoseofHCP-DCX.Asa...