当前位置: X-MOL 学术Water Res. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Simultaneous oxidation and removal of arsenite by Fe(III)/CaO2 Fenton-like technology
Water Research ( IF 11.4 ) Pub Date : 2021-05-28 , DOI: 10.1016/j.watres.2021.117312
Meiqing Chen 1 , Zhihao Chen 2 , Pingxiao Wu 3 , J Paul Chen 4
Affiliation  

Arsenite contaminated water is one of severe global environmental problems. It is challenging to treat As(III) pollution by a one-step technology. In this study, we developed a Fe(III)/CaO2 Fenton-like technology for the treatment of As(III). The simultaneous oxidation of arsenite and removal of arsenic were achieved with efficiencies of nearly 100% and 95.8% respectively, which outperforms conventional technologies. It worked well in pH 3 to 9, and in the presence of cationic heavy metals, anions and humic acid. Moreover, the PO43 inhibited the removal of As(III). OH and 1O2 played the important roles in the oxidation of As(III). The Ca(II) derived from CaO2 made a significant contribution to the oxidation and removal of As(III). The SEM and XPS studies confirmed that the formation of Ca-Fe nascent colloid caused the effective removal of arsenic. Our study demonstrates that the one-step Fe(III)/CaO2 technology has a great potential for purification of the As(III)-contaminated water.



中文翻译:

Fe(III)/CaO2 类芬顿技术同时氧化去除亚砷酸盐

亚砷酸盐污染的水是严重的全球环境问题之一。一步法处理As(III)污染具有挑战性。在这项研究中,我们开发了一种 Fe(III)/CaO 2 Fenton 类技术来处理 As(III)。实现了亚砷酸盐的同时氧化和脱砷,效率分别接近100%和95.8%,优于传统技术。它在 pH 3 到 9 以及存在阳离子重金属、阴离子和腐殖酸的情况下效果很好。此外,该采购订单43-抑制 As(III) 的去除。 OH 和1 O 2在 As(III) 的氧化中起重要作用。CaO 2衍生的Ca(II)对As(III)的氧化和去除做出了重大贡献。SEM 和 XPS 研究证实 Ca-Fe 新生胶体的形成导致了砷的有效去除。我们的研究表明,一步法 Fe(III)/CaO 2技术具有净化 As(III) 污染水的巨大潜力。

更新日期:2021-06-17
down
wechat
bug