Biochar-mediated sorption of antibiotics in pig manure
| Autor: | Sören Thiele-Bruhn, Anastasiah N. Ngigi, Yong Sik Ok |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Environmental Engineering
Swine Health Toxicology and Mutagenesis 0211 other engineering and technologies Oxytetracycline 02 engineering and technology 010501 environmental sciences Waste Disposal Fluid 01 natural sciences Ciprofloxacin Biochar medicine Animals Environmental Chemistry Freundlich equation Waste Management and Disposal 0105 earth and related environmental sciences Thiamphenicol 021110 strategic defence & security studies Chemistry Sulfamethazine Sorption Pollution Manure Anti-Bacterial Agents Bioavailability Charcoal Environmental chemistry Digestate Environmental Pollutants Adsorption Sludge medicine.drug |
| Zdroj: | Journal of Hazardous Materials. 364:663-670 |
| ISSN: | 0304-3894 |
| DOI: | 10.1016/j.jhazmat.2018.10.045 |
| Popis: | Using manure contaminated with antibiotics as fertilizer is a primary source of soil pollution with antibiotics and concomitantly with antibiotic resistance genes (ARG). Bioavailable antibiotics trigger further ARG amplification during manure storage. Consequently it is aimed to facilitate the immobilization of antibiotics in manure. To this end, five biochars derived from pine cone (BCP), rice husk, sewage sludge, digestate and Miscanthus were tested as additional sorbents in liquid pig manure for sulfamethazine, ciprofloxacin, oxytetracycline and florfenicol. Non-linear sorption was best-fit using the Freundlich isotherm (R2 > 0.82) and the pseudo-second-order model best described sorption kinetics (R2 > 0.94). Antibiotics’ sorption onto manure increased in the order sulfamethazine 2.7) followed by sulfamethazine and ciprofloxacin. Yet, oxytetracycline was mostly mobilized probably due to competitive adsorption. Effects depended on the proportion of biochar added and the type of biochar, whereby plant-derived biochar exhibited better immobilization of antibiotics. Depending on the type and portion of biochar, admixtures to manure can be used to lower the mobility and hence bioavailability of fenicols, fluoroquinolones and sulfonamides. |
| Databáze: | OpenAIRE |
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