We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Reduction of Antibiotics and Resistance Genes in Organic Fertilizers by Low-temperature Pyrolysis.
- Authors
Wang Ben; Jia Weili; Wu Yinglin; Liu Fang; Ying Guangguo
- Abstract
Low-temperature pyrolysis experiments were conducted to study the dynamics of antibiotics and antibiotic resistance genes (ARGs) in organic fertilizers. The concentrations of antibiotics and ARGs before and after pyrolysis were determined by ultra-performance liquid chromatography-mass spectrometry and quantitative PCR technology, respectively. The results showed that low-temperature pyrolysis under 80 -250 °C decreased the levels of antibiotics from 11.63% to 47.32% . Pyrolysis temperature and antibiotic melting point played important roles in the removal of antibiotics in organic fertilizers: the higher the pyrolysis temperature, the better the removal effect of antibiotics; the lower the melting point of the antibiotic, the more thoroughly it is removed. Meanwhile, low-temperature pyrolysis under 80 - 250 ° C had strong inhibiting effects on abundance of ARGs and horizontal gene transfer. The removal efficiency of ARGs continuously increased up to 99% along with increasing temperature. The average removal rate of mobile genetic elements was 90%, and almost all of them were removed at 250°C. The average removal rates of uidawere all above 99% within the whole pyrolysis temperature range. In comparison with organic fertilizers, the addition of diatomite and zeolite promoted and inhibited the removal of antibiotics and ARGs, respectively, at 80- 150°C, and significantly inhibited the removal of antibiotics at 250°C. The results from this study revealed the influence of pyrolysis temperature on the behavior and removal of antibiotics and ARGs, thus providing a theoretical basis for future application of low-temperature pyrolysis in reducing antibiotics and ARGs in organic fertilizers.
- Publication
Asian Journals of Ecotoxicology, 2023, Vol 18, Issue 1, p88
- ISSN
1673-5897
- Publication type
Academic Journal
- DOI
10.7524/AJE.1673-5897.20221031002