磷酸盐
吸附
化学
膜
水处理
生物污染
活性炭
饮用水净化
富营养化
蛋白核小球藻
化学工程
藻类
环境化学
环境工程
有机化学
营养物
生物化学
生态学
工程类
生物
小球藻
作者
Sen Zeng,Liu Yuanshang,Yanmin Wang,Yunhua Wang,Yaming Zhou,Lihuang Li,Shuo Li,Xi Zhou,Miao Wang,Xueqin Zhao,Lei Ren
出处
期刊:Chemosphere
[Elsevier]
日期:2023-02-28
卷期号:323: 138175-138175
被引量:12
标识
DOI:10.1016/j.chemosphere.2023.138175
摘要
Adsorbents featuring abundant binding sites and high affinity to phosphate have been used to resolve water eutrophication. However, most of the developed adsorbents were focused on improving the adsorption ability of phosphate but ignored the effect of biofouling on the adsorption process especially used in the eutrophic water body. Herein, a novel MOF-supported carbon fibers (CFs) membrane with high regeneration and antifouling capability, was prepared by in-situ synthesis of well-dispersed MOF on CFs membrane, to remove phosphate from algae-rich water. The hybrid UiO-66-(OH)2@Fe2O3@CFs membrane exhibits a maximum adsorption capacity of 333.3 mg g−1 (pH 7.0) and excellent selectivity for phosphate sorption over coexisting ions. Moreover, the Fe2O3 nanoparticles anchored on the surface of UiO-66-(OH)2 through ‘phenol-Fe(III)’ reaction can endow the membrane with the robust photo-Fenton catalytic activity, which improves long-term reusability even under algae-rich condition. After 4 times photo-Fenton regenerations, the regeneration efficiency of the membrane could remain 92.2%, higher than that of hydraulic cleaning (52.6%). Moreover, the growth of C. pyrenoidosa was significantly reduced by 45.8% within 20 days via metabolism inhibition due to membrane-induced P-deficient conditions. Hence, the developed UiO-66-(OH)2@Fe2O3@CFs membrane holds significant prospects for large-scale application in phosphate sequestration of eutrophic water bodies.
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