| Autor: |
FAN Xiulei, WANG Shenpeng, ZHANG Shu, JI Wei, CUI Yue, KONG Xizhe, LÜ Bowen |
| Jazyk: |
čínština |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
Gongye shui chuli, Vol 44, Iss 10, Pp 133-142 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
1005-829X |
| DOI: |
10.19965/j.cnki.iwt.2023-0961 |
| Popis: |
Copper modified corn stalk biochar(CBC) was prepared by hydrothermal method and used as a catalyst to activate potassium persulfate(PS) to remove tetracycline (TC) from water. The results showed that CBC+PS system had high efficiency and stability for TC removal. Under the conditions of solution pH=7, PS dosage of 3 mmol/L, and CBC dosage of 0.5 g/L, the removal rate of TC with mass concentration of 20 mg/L by the CBC+PS system reached 84.46% within 10 min, and 96.75% after 2 h. Mechanism study indicated that Cu, hydroxyl and carboxyl groups supported on CBC surface could promote electron transfer, and then accelerate the production of reactive oxygen species such as SO4·- and·OH. After 5 cycles experiments, the removal rate of TC could still be maintained at 85.62%, which showed that CBC had good stability and reusability. This study provided an efficient and stable TC removal system, and also provided a new way for the recovery and reuse of corn stalk. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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