Journal
JOURNAL OF CLEANER PRODUCTION
Volume 294, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jclepro.2021.126372
Keywords
Magnetic biochar; Persulfate; Tetracycline; Degradation
Categories
Funding
- National Natural Science Foundation of China [41703096]
- Natural Science Foundation of Guangdong Province [2019A1515011659]
- Project of Science and Technology of Guangdong Province [2017A020216025]
- China Scholarship Council Scholarship Fund [201908440143]
- Beijing Zhongkebaice Technology Service Co., Ltd.
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The study found that magnetic biochar has stronger catalytic activity than unmagnetized sludge biochar in activating peroxymonosulfate to degrade antibiotic tetracycline. Magnetic biochar also showed better separation and sustainability in recovery and reuse, especially under neutral pH conditions. This method is an economical, efficient, and environmentally friendly way to degrade organic pollutants.
Advanced oxidation processes based on persulfate activation can produce strong reactive oxygen species, which can effectively degrade a variety of organic pollutants. However, finding cost-effective activation methods and materials have become the key in the research process of this oxidation technology. With the discovery of the catalytic activity of biochar, the application of carbonaceous materials in persulfate activation has recently emerged. In this study, recyclable magnetic biochar was prepared from dewatered piggery sludge, and was used to activate peroxymonosulfate to degrade antibiotic tetracycline. Results showed that the catalytic activity of magnetic biochar was stronger than that of unmagnetized sludge biochar, and magnetic biochar showed better separation and sustainability in recovery and reuse. Neutral pH condition was also favorable for biochar and magnetic biochar to activate peroxymonosulfate. Per-oxymonosulfate activation using magnetic biochar is an economical, efficient and environmentally friendly method for organic pollutants degradation. (c) 2021 Elsevier Ltd. All rights reserved.
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