生物炭通过改变土壤水理学和增强抗生素吸附来减少抗生素运输
Xiang-Yu Tang1, Wen-Min Yin2, Guang Yang3
1State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610299, China.
Journal of hazardous materials
|May 4, 2024
概括
生物炭 (BC) 有效地减少了土壤中的抗生素运输. 表面BC应用降低了硫胺排水,而透的活性壁通过改变土壤水流减少了florfenicol出.
科学领域:
- 环境科学 环境科学
- 土壤科学 土壤科学
- 农业化学 农业化学
背景情况:
- 抗生素在土壤中的运输带来环境风险.
- 生物炭 (BC) 在现场条件下减轻抗生素运动的有效性需要进一步研究.
- 硫胺和花尼科尔等弱吸收抗生素尤其令人担忧.
研究的目的:
- 评估不同生物炭 (BC) 应用方法在通过排水和排水减少抗生素排放方面的有效性.
- 评估BC对土壤液压特性及其在抗生素运输中的作用的影响.
- 为了比较表面应用的BC和BC修改的透反应壁的性能.
主要方法:
- 在实地研究中,使用重新包装的倾斜土壤盒与石灰质土壤进行实地研究.
- 在三个自然降雨事件中监测三种抗生素 (sulfadiazine,sulfamethazine,florfenicol) 的释放.
- 应用1%的BC作为表面应用 (1%BC-SA) 和5%的BC在一个透的反应壁 (5%BC-PRW).
主要成果:
- 1%BC (1%BC-SA) 的表面应用显著减少了硫胺抗生素的流水排放,这归因于增强的水透.
- 5%的BC-PRW治疗比1%的BC-SA更有效地减少了florfenicol的浸出.
- BC-PRW增强了植物可用和可排水的水含量,这对于减少最弱吸收抗生素的漏至关重要.
结论:
- 生物炭的应用显著影响土壤的液压特性,从而调节水流模式.
- 表面应用的BC和BC修改的透反应壁都显示出降低土壤中抗生素运输的潜力.
- 用生物炭改变土壤的液压特性是减轻抗生素对地外和地下水污染的关键机制.
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