Effects of biochars on the fate of antibiotics and their resistance genes during vermicomposting of dewatered sludge
| Autor: | Chen Jingyang, Xia Hui, Huang Kui, Guan Mengxin, Lin Li |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Eisenia fetida
Environmental Engineering Health Toxicology and Mutagenesis 0211 other engineering and technologies 02 engineering and technology 010501 environmental sciences Corncob engineering.material 01 natural sciences Husk Biochar Environmental Chemistry Animals Organic matter Food science Oligochaeta Waste Management and Disposal 0105 earth and related environmental sciences chemistry.chemical_classification 021110 strategic defence & security studies biology Sewage Earthworm biology.organism_classification Pollution Humus Anti-Bacterial Agents chemistry Charcoal engineering Vermicompost |
| Zdroj: | Journal of hazardous materials. 397 |
| ISSN: | 1873-3336 |
| Popis: | It is currently still difficult to decrease the high contents of antibiotics and their corresponding antibiotic resistance genes (ARGs) in sludge vermicompost. To decrease the environmental risk of vermicompost as a bio-fertilizer, this study investigated the feasibility of biochar addition to decrease the levels of antibiotics and ARGs during vermicomposting of dewatered sludge. To achieve this, 1.25% and 5% of corncob and rice husk biochars, respectively, were added to sludge, which was then vermicomposted by Eisenia fetida for 60 days. The sludge blended with corncob biochar showed increased decomposition and humification of organic matter. Higher biochar concentration promoted both the number and diversity of bacteria, and differed dominant genera. The level of antibiotics significantly decreased as a result of biochar addition (P |
| Databáze: | OpenAIRE |
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