School of Environmental Science and Engineering, Shanghai Jiao Tong University, 200240, China; School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200241, China.
School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200241, China.
Environ Res. 2022 Aug;211:113101. doi: 10.1016/j.envres.2022.113101. Epub 2022 Mar 12.
As a kind of typical veterinary drug, fluoroquinolone antibiotics (FQs) are widely used in the field of livestock and poultry breeding, but these FQs escape to surrounding soil through various pathways, polluting soil through long-term accumulation. Current study proposed a clean technology named thermal desorption to deal with FQs contaminated soils. It was observed that time, temperature and soil particle size were the critical factors in FQs thermal desorption. Results of the study showed that higher temperature was more effective in the removal of FQs, while removal of FQs attached with finer particles was more difficult compared to coarse particles. Fine soil particles (0.6-0.85 mm) were decontaminated up 99.4% when treated with 400 °C for 60min. Thermal desorption of FQs from contaminated soil was governed by first-order kinetics. Based on the detection of exhaust gas components, a possible thermal desorption mechanism was proposed. Study suggested that thermal desorption was a clean and effective remediation method to treat FQs-contaminated soils without generating any further waste.
作为一种典型的兽医药物，氟喹诺酮类抗生素（FQs）广泛应用于畜牧业，但这些 FQs 通过各种途径逃到周围的土壤中，通过长期积累污染土壤。目前的研究提出了一种名为热解吸的清洁技术来处理 FQs 污染的土壤。研究表明，时间、温度和土壤粒径是 FQs 热解吸的关键因素。研究结果表明，较高的温度更有利于 FQs 的去除，而与粗颗粒相比，细颗粒（0.6-0.85mm）上的 FQs 去除更困难。当用 400°C 处理 60 分钟时，细土壤颗粒（0.6-0.85mm）的脱污染率达到 99.4%。FQs 从污染土壤中的热解吸遵循一级动力学。基于废气成分的检测，提出了一种可能的热解吸机理。研究表明，热解吸是一种清洁有效的修复方法，可以处理 FQs 污染的土壤，而不会产生任何进一步的废物。
