| Autor: |
Jianfeng Ran, Haisheng Duan, C. Srinivasakannan, Jiashu Yao, Shaohua Yin, Libo Zhang |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Ultrasonics Sonochemistry, Vol 88, Iss , Pp 106106- (2022) |
| Druh dokumentu: |
article |
| ISSN: |
1350-4177 |
| DOI: |
10.1016/j.ultsonch.2022.106106 |
| Popis: |
The presence of organic compounds in the waste liquor is of serious environmental concern that has plagued the development of alumina industry (Bayer Process). The present work attempts to develop a green and efficient process for removal of organics utilizing combined effect of sonolysis and ozonation (US/O3). The effects of reaction duration, ozone concentration and ultrasonic power are assessed for sonolysis (US), ozonation (O3) and combination of sonolysis and ozonation (US/O3). The optimal conditions for US/O3 treatment system is identified to be a reaction duration of 7 h, ozone concentration of 7.65 g/h, and ultrasonic power of 600 W. The total organic carbon (TOC) removal and decolorization are 60.13% and 87.1%, respectively. The process can be scaled-up to industrial scale, which could potentially serve to be a convenient, safe and sustainable alternative to the exisiting treatment technologies. Additionally, the treated waste water can be reused contributing to an improvement in the overall economics. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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