| 发明名称 |
METHODS AND SYSTEMS FOR SELENOCYANATE REMOVAL FROM CONTAMINATED AQUEOUS MEDIA |
| 摘要 |
A process of removing selenocyanate from an aqueous medium contaminated with at least selenocyanate. In the presence of UV light and TiO2 as a photocatalyst, selenocyanate is initially photolysed to release Se(0). Se(0) is then oxidized to Se(IV) and finally Se(VI) by free radicals generated by the photocatalyst. After the oxidation is complete, a hole scavenger is added and mixed with the aqueous medium to trigger the reduction of Se(VI) to Se(0). |
| 申请公布号 |
US2016311711(A1) |
申请公布日期 |
2016.10.27 |
| 申请号 |
US201514694446 |
申请日期 |
2015.04.23 |
| 申请人 |
King Fahd University of Petroleum and Minerals |
发明人 |
VOHRA Muhammad Shariq |
| 分类号 |
C02F1/72;C02F1/32;C02F1/70 |
主分类号 |
C02F1/72 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A process of removing selenocyanate from a selenocyanate-containing aqueous medium, comprising:
contacting the selenocyanate-containing aqueous medium with TiO2 particles in the presence of UV light to photolyse selenocyanate into elemental selenium and to oxidize elemental selenium to selenite then to selenate; adding a hole scavenger to the selenocyanate-containing aqueous medium to initiate reduction of selenate and/or selenite to elemental selenium; and removing the resulting elemental selenium as an amorphous solid. |
| 地址 |
Dhahran SA |
