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为解决传统高级氧化技术中非均相催化体系传质效率低导致其对污染物的催化效果降低的问题，以海藻酸钠(NaAlg)为膜材料，制备了不同过渡金属离子(Co2+、Ni2+、Cu2+和Zn2+)交联的海藻酸盐(MAlg)水凝胶膜。结合膜分离技术和过硫酸盐高级氧化技术，利用错流过滤的运行模式加快传质过程，考察了膜对染料橙黄G(OG)的降解性能；并通过自由基淬灭实验和电子顺磁共振(EPR)鉴定催化体系中的自由基种类。结果表明：催化性能最好的是海藻酸钴(CoAlg)水凝胶膜，1 min内对染料的去除率接近100%，说明膜分离技术的应用显著提高了催化降解性能；催化体系中起主导作用的是硫酸根自由基(~-)和羟基自由基(·OH)。
Abstract：In order to solve the problem that the heterogeneous catalytic system of traditional advanced oxidation technology has low mass transfer efficiency and reduces its catalytic effect on pollutants, alginate(MAlg) hydrogel films with different transition metal ions(Co2+, Ni2+, Cu2+, and Zn2+) were prepared by using sodium alginate(NaAlg) as membrane material. Combined with membrane separation technology and persulfate advanced oxidation technology, the mass transfer process was accelerated by cross-flow filtration, and the degradation performance of the membrane on Orange G(OG) dye was investigated. The species of free radicals in the catalytic system were identified by radical quenching experiment and electron paramagnetic resonance(EPR). The results showed that the cobalt alginate(CoAlg) hydrogel film had the best catalytic performance, and the dye removal rate was close to100% within 1 min, indicating that the application of membrane separation technology significantly improved the catalytic degradation performance. In the catalytic system, sulfate radical( and hydroxyl radical (·OH)play a leading role.
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基本信息:
中图分类号:X703;TQ028.8
引用信息:
[1]赵孔银,蒋俊,王明林,等.不同离子交联海藻酸盐水凝胶膜活化过硫酸盐对染料的快速去除[J].天津工业大学学报,2026,45(02):19-23.
基金信息:
国家自然科学基金项目（51773252）; 天津市应用基础与前沿技术研究计划重点项目（16JCZDJC37500）
2026-04-25
2026-04-25