高密度“离子氛”全有机凝胶吸附剂的资源化除磷研究  

Study on resource-based phosphorus removal based on a fully-organic gel adsorbent with high density ionic atmosphere

作　　者：谢娜 黄禹嘉 丰敏 胡梦涵 余义开[1] XIE Na;HUANG Yujia;FENG Min;HU Menghan;YU Yikai(College of Chemistry and Chemical Engineering,Jiangxi Normal University,Nanchang 330022)

机构地区：[1]江西师范大学化学化工学院,南昌330022

出　　处：《环境科学学报》2024年第7期184-200,共17页Acta Scientiae Circumstantiae

基　　金：国家自然科学基金(No.21866016);江西省自然科学基金(No.20232BAB203034);江西省教育厅科技项目(N0.GJJ2200339)。

摘　　要：水体磷污染控制已成为全球性重要的环保议题,本次研究发现一类全有机骨架凝胶除磷吸附剂(PMASG),通过产生高密度“离子氛”效应,对磷酸根产生全方位包围式静电结合作用,实现对水中磷酸根的高效吸附处理,具有以下应用优势:(1)合成工艺绿色经济,应用成本低廉;(2)适用于广泛浓度的磷水体,尤其实现了超稀浓度磷(低于0.5 mg·L^(-1))水体中深度提取磷资源;(3)吸附容量较大,对磷酸根的吸附容量值为107.05 mg·g^(-1),优于大部分现有无机类吸附剂;(4)应用时未释放有害物质;(5)吸附磷后废渣,全有机型PMASG可通过热降解消除残留,而被吸附的磷酸根则可以磷矿化转变,以此实现废渣资源化.综合比较,PMASG比现有无机吸附剂拥有更多的应用优势.总之,本次研究基于研发一类经济、绿色、高效及便于资源化的新型除磷吸附剂材料,开拓了全有机骨架吸附剂资源化除磷的重要一步.Phosphorus removal has emerged as a globally significant issue in water treatment This research unveiled a novel organic-framework phosphorus adsorbent(PMASG),leveraging a high-density"ionic atmosphere"effect to facilitate comprehensive electrostatic binding with phosphate ions.The material offered the following application advantages:(1)Economically sustainable synthesis with diminished operational costs;(2)Versatility across a spectrum of phosphorus concentrations,notably extracting phosphorus from ultra-dilute solutions(below 0.5 mg·L^(-1));(3)Enhanced adsorption capacity,registering at 107.05 mg·g^(-1)for phosphate ions,surpassing the majority of existing inorganic adsorbents;(4)Minimization of hazardous substances release during application;(5)The residual PMASG,post-adsorption,underwent thermal degradation,while adsorbed phosphate ions underwent phosphorization,thereby promoting residue resource utilization.Consequently,this study pioneered a cost-effective,eco-friendly,efficient,and resource-recyclable phosphorus adsorbent,outperforming traditional inorganic counterparts,thereby advancing the paradigm of organic-framework adsorbent for phosphorus resource recovery.

关 键 词：磷污染 超稀磷水体 资源化除磷 全有机吸附剂 离子氛效应 废渣磷矿化 

分 类 号：X703[环境科学与工程—环境工程]