模拟织品染料废水的基于堆肥的可持续处理:评估吸附能力和植物毒性
Iñaki Beceiro-Cillero1, Juan Antelo1, Pedro V Verdes2
1CRETUS, Department of Soil Science and Agricultural Chemistry, University of Santiago de Compostela, 15782, Santiago de Compostela, Spain.
Journal of environmental management
|August 2, 2025
概括
城市垃圾堆肥有效地从废水中去除诸如水晶紫色和明亮绿色之类的织染料. 这种环保吸附剂在废水处理和安全的土壤修改应用方面表现有前途.
科学领域:
- 环境科学 环境科学
- 环境化学环境化学
- 材料科学 材料科学 材料科学
背景情况:
- 由于染料的毒性和传统处理方法的高成本,织品染料污染给环境带来了重大风险.
- 染料行业的经济重要性需要可持续的,具有成本效益的废水净化解决方案.
研究的目的:
- 评估城市垃圾衍生堆肥作为一个环保和经济的吸收剂,用于从模拟废水中去除织品染料.
- 为了确定不同颜料类型的堆肥的吸附能力和效率.
- 评估与使用染料污染堆肥相关的生态风险.
主要方法:
- 进行了批量吸附实验,以确定水晶紫 (CV),绿 (BG) 和罗达胺B (RhB) 的最大吸附能力.
- 固定床柱实验被用来评估突破时间和染料亲和力.
- 用Lollium perenne进行的植物毒性测定是在染料溶液和堆肥液上进行的.
主要成果:
- 堆肥具有很高的吸附能力:CV的330毫克-1克,BG的150毫克-1克,RhB的35毫克-1克.
- 在最佳条件下,吸附效率超过80-90%,CV显示最长的突破时间 (700分钟).
- 暴露于染料的堆肥液的植物毒性低于纯染料溶液,这表明生态风险最小.
结论:
- 城市垃圾堆肥是一种高效且可行的吸收剂,用于从水性废水中去除织品染料.
- 该研究证实了堆肥在废水处理方面的潜力,以及作为土壤修饰剂的安全再利用.
- 吸附性能受到染料结构和堆肥特性的影响,突出显示了量身定制应用的必要性.
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