铜绿微囊藻
化学
锰
高锰酸钾
水处理
次氯酸钠
高锰酸盐
藻类
环境化学
无机化学
吸附
钠
核化学
蓝藻
环境工程
植物
有机化学
遗传学
细菌
工程类
生物
作者
Nan Li,Chengxin Fan,Shunkai Xu,Shumin Zhu,Lingjun Bu,Lin Deng,Zhou Shi,Shiqing Zhou
出处
期刊:Chemosphere
[Elsevier]
日期:2023-11-01
卷期号:341: 140054-140054
被引量:2
标识
DOI:10.1016/j.chemosphere.2023.140054
摘要
Previous studies have found that pre-oxidation of manganese salts such as potassium permanganate and potassium manganate can remove algae in water, while existing problems such as excessive oxidation and appearance of chromaticity. In this study, our objective was to induce a Fenton-like reaction by activating sodium percarbonate (SPC) with divalent manganese (Mn(II)) to pre-oxidize algae-contaminated water. The optimal dosage of Mn(II)/SPC was determined by assessing the zeta potential of the algae and the residual Mn(II) in the solution. Moreover, we conducted a characterization of the cells post-reaction and assessed the levels of dissolved organic carbon (DOC). The disinfection by-products (DBPs) (sodium hypochlorite disinfection)of the algae-containing water subsequent to Mn(II)/SPC treatment were measured. Experiments show that Mn(II)/SPC pre-oxidation at optimal dosage acquired 88% removal of algae and less damage to the cell membrane. Moreover, the Mn(II) acted not only as a catalyst but also formed MnO2 which adsorbed onto the cell surface and facilitated sedimentation. Furthermore, this technology exhibits the capability to effectively manage algal organic matters present in water, thereby mitigating the formation of nitrogen-containing DBPs. These results highlight the potential of Mn(II)/SPC treatment for treating water contaminated with algae, thus ensuring the safety and quality of water resources.
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