用抗生素污染的牲畜尸体进行可持续管理,以缓解气候变化
Dong-Jun Lee1, Jonghyun Park2, Jee Young Kim2
1Smart Livestock Environment Division, National Institute of Animal Science (NIAS), Wanju, 55365, Republic of Korea.
Journal of environmental management
|August 12, 2025
概括
这项研究引入了一种新的热化学转换方法,使用二氧化碳 (CO2) 来处理被抗生素污染的牲畜尸体. 这个过程将废物转化为有价值的合成气,同时减少温室气体排放和降解有害残留物.
科学领域:
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
- 废物管理 废物管理
背景情况:
- 在畜牧业中使用抗生素引起了人们对温室气体 (GHG) 排放和尸体残留抗生素排放的担忧.
- 牲畜尸体具有较低的碳比和持久的抗生素残留物,使得传统的处理方法,如堆肥和无氧消化不适合.
研究的目的:
- 开发一种可持续的热化学转换策略,用于处理被抗生素污染的牲畜尸体.
- 调查二氧化碳 (CO2) 作为轻度氧化剂在废物回收和污染物降解中的有效性.
主要方法:
- 在热解过程中使用二氧化碳作为温和氧化剂进行热化学转换.
- 在二氧化碳和二氧化大气下研究了多阶段和催化热解 (基于Ni的催化剂).
- 分析了合成气的生产,可凝结产品,多环芳 (PAH) 和抗生素残留物的降解,以及碳足迹.
主要成果:
- 与N2.2相比,使用CO2的催化热解显著增加了28%的合成气产量.
- 二氧化碳促进了气相反应,优化了对合成气的碳分布,并最大限度地减少了不必要的可凝结产物.
- 该过程有效降解PAH和残留抗生素,提高环境安全.
- 与垃圾填埋 (16.48 g CO2-eq g-1) 相比,二氧化碳辅助热解的碳足迹明显较低 (-0.42 g CO2-eq g-1).
结论:
- 二氧化碳辅助热解提供了一种碳负和资源高效的方法,用于处理被抗生素污染的牲畜尸体废物.
- 这种方法为管理具有挑战性的废物流提供了可持续的解决方案,同时减轻了环境风险.
- 热化学转化战略提高了畜牧业废物管理的安全性和可持续性.
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