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High-efficient decomplexation of Cu-EDTA and Cu removal by high-frequency non-thermal plasma oxidation/alkaline precipitation by Yue Liu; Danfeng Wang; Mingming Xue; Ruiying Song; Ying Zhang; Guangzhou Qu; Tiecheng Wang is a Engineering article available to read on EtoBox.
What is High-efficient decomplexation of Cu-EDTA and Cu removal by high-frequency non-thermal plasma oxidation/alkaline precipitation about?
Organic-heavy metal complexes, with strongly chemical stability and high solubility in water, are difficult to eliminate by traditional chemical precipitation. An efficient strategy, i.e., high-frequency non-thermal plasma (NTP) oxidation/alkaline precipitation, was employed to decompose organic-heavy metal complexes and precipitate free metal ions. Cu-ethylene diamine tetraacetic acid (Cu-EDTA) was chosen as the model. The experimental results showed that Cu-EDTA removal efficiency reached 98.8% at 6 kV after 10 min NTP treatment with air as the carrier gas. Relatively greater removal performance of Cu-EDTA was observed at a lower initial concentration and acidic conditions. Oxygen feeding favored Cu-EDTA decomplexation. Excessive Cu2+ could promote Cu-EDTA decomplexation, whereas excessive EDTA disfavored this process. OH and O2 − generated in the NTP system exhibited significant roles in the Cu-EDTA decomposition process, as analyzed by radical quenching tests. Cu-EDTA decomplexation process was analyzed by spectroscopic and chromatographic techniques. Some small organic substances and inorganic anions, including crotonic acid, acrylic acid, lactic acid, ethylene glycol, acetami
Who reads High-efficient decomplexation of Cu-EDTA and Cu removal by high-frequency non-thermal plasma oxidation/alkaline precipitation?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Yue Liu; Danfeng Wang; Mingming Xue; Ruiying Song; Ying Zhang; Guangzhou Qu; Tiecheng Wang
- Publisher
- Elsevier BV
- Published
- 2021
- Language
- EN
- Field
- Engineering (Physical Sciences)