摘要
为高效分离、富集和回收废水中的苯酚提供一种新的吸附材料。以改性纳米二氧化硅为载体,采用表面分子印迹技术制备苯酚表面分子印迹聚合物(SiO_(2)^(-)SMIP)和空白表面分子印迹聚合物(SiO_(2)^(-)SNIP);动态吸附、静态吸附、选择性吸附、再生吸附和竞争吸附实验用以探究其吸附性能。SiO_(2)^(-)SMIP对苯酚具有良好的吸附能力,吸附过程属于单吸附层的化学吸附,可快速达到吸附平衡;SiO_(2)^(-)SMIP比SiO_(2)^(-)SNIP具有更多的亲和力结合位点和更高的最大表观结合量,且对苯酚具有特异的选择性吸附能力;SiO_(2)^(-)SMIP经过多次循环使用后,对苯酚依然具有很好的吸附能力。SiO_(2)^(-)SMIP吸附能力出色、性质稳定、特异选择性高,可作为吸附剂材料有效分离、富集和回收废水中的苯酚。
A new adsorption material for the efficient separation,enrichment,and recovery of phenol in wastewater was provided.Phenol surface molecularly imprinted polymers(SiO_(2)^(-)SMIP)and blank surface molecularly imprinted polymers(SiO_(2)^(-)SNIP)were prepared by a surface molecular imprinting technique using modified nanosilicon dioxide as the carrier.Dynamic adsorption,static adsorption,selective adsorption,regeneration adsorption,and competitive adsorption experiments were carried out to investigate the adsorption properties of SiO_(2)^(-)SMIP and SiO_(2)^(-)SNIP.The results showed that the SiO_(2)^(-)SMIP has a good adsorption capacity for phenol.The adsorption process belongs to the chemisorption of a single adsorption layer,and the adsorption equilibrium can be reached quickly.SiO_(2)^(-)SMIP has more affinity binding sites and a higher maximum apparent binding capacity than SiO_(2)^(-)SNIP,and has a specific selective adsorption capacity for phenol.After repeated use,SiO_(2)^(-)SMIP still has a good adsorption capacity for phenol.SiO_(2)^(-)SMIP has excellent adsorption capacity,stable properties,and high specific selectivity.It can be used as an adsorbent material to effectively separate,enrich,and recover phenol from wastewater.
作者
常自强
邓波
饶安举
CHANG Zi-qiang;DENG Bo;RAO An-ju(School of Public health,North Sichuan Medical College,Nanchong 637000,China)
出处
《化学试剂》
2025年第2期39-45,共7页
Chemical Reagents
关键词
苯酚
分子印迹聚合物
选择性
吸附性能
废水处理
phenol
molecularly imprinted polymers
selectivity
adsorption property
wastewater treatment
