State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, 100875 Beijing, China.
State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, 100875 Beijing, China.
Bioresour Technol. 2015 Jan;175:284-90. doi: 10.1016/j.biortech.2014.10.098. Epub 2014 Oct 25.
Effects of composting on the fate of sulfonamides (SAs) in the manure-straw mixture were explored through a simulation of aerobic composting process. Additionally, factors of temperature and coexistence of heavy metal Cu that might influence the removal efficiency were particularly investigated. As shown in the results, the extractable SAs dissipated rapidly during the composting process. The coexistence of Cu in the composting process might have delayed the decline of SAs, but the drugs could still be completely removed by the end of the composting. In contrast to the thermophilic aerobic composting, extractable SAs in air-temperature-placed mixture dissipated much slower and 1.12-1.56mg/kg could be detected after 35days of incubation. The results confirmed that temperature could influence the dissipation of SAs, which was identified as a more important factor than Cu-coexistence. Hence, thermophilic aerobic composting is an effective process to eliminate VAs before manure land application.
通过模拟好氧堆肥过程，研究了堆肥处理对粪-草混合物中磺胺类抗生素（SAs）命运的影响。此外，还特别研究了温度和共存重金属 Cu 等因素对去除效率的影响。结果表明，可提取的 SAs 在堆肥过程中迅速消散。堆肥过程中 Cu 的共存可能会延迟 SAs 的下降，但到堆肥结束时，这些药物仍能被完全去除。与高温好氧堆肥相比，在空气温度放置的混合物中可提取的 SAs 消散得更慢，在 35 天的培养后仍可检测到 1.12-1.56mg/kg。结果证实温度会影响 SAs 的消散，这是比 Cu 共存更重要的因素。因此，高温好氧堆肥是一种在粪肥土地应用前消除 VAs 的有效方法。
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