过硫酸钠强化活性锰氧化物滤料去除BPA:NH_(4)^(+),Mn^(2+)的影响  

Sodium persulfate enhanced active manganese oxide filter material to remove BPA:influence of NH_(4)^(+)、Mn 2+

作　　者：程亚 张笑笑 曲木果洱 文刚[1,2,3] 黄廷林[1,2,3] CHENG Ya;ZHANG Xiao-xiao;QU-MU Guo-er;WEN Gang;HUANG Ting-lin(Northwest Key Laboratory of Resources,Environment and Ecology,Ministry of Education,Xi'an University of Architecture and Technology,Xi'an 710055,China;Shaanxi Provincial Key Laboratory of Environmental Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China;Shaanxi Collaborative Innovation Center for Water Pollution Control and Water Quality Safety,Xi'an University of Architecture and Technology,Xi'an 710055,China)

机构地区：[1]西安建筑科技大学,西北资源环境与生态教育部重点实验室,陕西西安710055 [2]西安建筑科技大学,陕西省环境工程重点实验室,陕西西安710055 [3]西安建筑科技大学,陕西省水污染控制与水质安全保障协同创新中心,陕西西安710055

出　　处：《中国环境科学》2025年第2期1176-1184,共9页China Environmental Science

基　　金：国家自然科学基金(52000145);陕西省重点科技创新团队(2023-CX-TD-32);陕西省教育厅重点科学研究计划项目(22JY035);陕西省高校科协青年人才托举计划项目(20230447)。

摘　　要：活性锰氧化物(MnO_(x))滤料在去除水中氨氮和锰污染物方面表现出高效催化氧化性能,但在去除双酚A(BPA)方面稳定性不足,且其与其他无机污染物相互作用机理尚不明确.采用过硫酸钠(NPS)增强活性滤料(FM)去除BPA,实验发现,0.1mmol/LNPS即可将去除率提升至80%以上,且随着NPS浓度增加,去除效率进一步提升,可达100%.NH_(4)^(+)和Mn^(2+)的加入分别通过促进电子转移和提供电子,增加活性物质产生,从而提高BPA去除效率.循环实验显示,虽然FM稳定性较好,但连续使用11次后去除率降至48%,而加入NPS后去除率可维持在65%以上.自由基淬灭和EPR实验以及X射线光电子能谱(XPS)分析证实,滤料/NPS体系中的主要活性物质为SO_(4)^(·-)、·OH和^(1)O_(2),Mn(Ⅲ)在催化氧化去除BPA过程中起关键作用,NPS的加入有助于Mn(Ⅲ)的形成,促进BPA去除.The active manganese oxide(MnO_(x))filter media was found to exhibit efficient catalytic oxidation performance in removing ammonia nitrogen and manganese pollutants from water,but it was lacking in stability for the removal of bisphenol A(BPA),and the interaction mechanism with other inorganic pollutants remained unclear.In this study,sodium persulfate(NPS)was used to enhance the effect of the activated filter material(FM)on the removal of BPA.The experiment revealed that the removal rate could be increased to over 80%with the addition of just 0.1mmol/L of NPS,and the removal efficiency was further improved as the NPS concentration increased,ultimately reaching 100%.The addition of NH_(4)^(+)and Mn^(2+)was found to increase the production of reactive species by promoting electron transfer and providing electrons,respectively,thus enhancing the removal efficiency of BPA.The cycling experiment demonstrated that,while the FM exhibited good stability,the removal rate dropped to 48%after 11consecutive uses;however,this rate could be maintained above 65%with the addition of NPS.Free radical quenching and EPR experiments,along with X-ray photoelectron spectroscopy(XPS)analysis,confirmed that the primary reactive species in the filter material/NPS system were SO_(4)^(·-),·OH,and ^(1)O_(2),with Mn(III)playing a crucial role in the catalytic oxidation process for removing BPA.The addition of NPS facilitated the formation of Mn(III),thereby promoting the removal of BPA.

关 键 词：过硫酸钠 氧化锰 BPA去除 滤料 

分 类 号：X523[环境科学与工程—环境工程]