在聚胺RO和NF膜上去除,吸附和清洗药物
Davor Dolar1, Iva Ćurić1, Danijela Ašperger1
1University of Zagreb Faculty of Chemical Engineering and Technology, Marulićev trg 19, HR-10000 Zagreb, Croatia.
Polymers
|June 28, 2023
概括
纯甲醇有效地去除了在纳米过 (NF) 和反透 (RO) 膜上吸附的杀虫剂药物阿尔本达. 这项研究强调甲醇是保持膜性能和水处理中的寿命的关键清洁试剂.
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.
- 材料科学 材料科学 材料科学
背景情况:
- 药品污染水源,并经常被纳米过 (NF) 和反透 (RO) 膜拒绝.
- 药物对膜的吸附降低了排斥效率,需要清洁以延长膜寿命.
- 阿尔本达是一种常见的杀虫剂,它吸附于NF/RO膜,这对水处理构成了挑战.
研究的目的:
- 评估商用清洁试剂在从NF/RO膜中去除吸附的阿尔本达的有效性.
- 为了确定最佳的化学清洁剂,以恢复药物吸附后的膜性能.
- 为了研究药物从膜表面脱离吸附的机制.
主要方法:
- 测试NaOH/EDTA溶液和不同度的甲醇 (20%,50%,≥99.6%) 作为清洁剂.
- 在NF/RO膜上使用吸附阿尔本达的清洁试剂.
- 使用富里埃变换红外光谱 (FTIR) 分析膜表面,以验证清洁的有效性.
主要成果:
- 纯甲醇 (≥99.6%) 是唯一能够完全从膜中去除吸附的阿尔本达的试剂.
- 较低度的甲醇和NaOH/EDTA溶液在去除阿尔本达的作用中效果有限或不存在.
- FTIR光谱证实了阿尔本达从用纯甲醇处理的膜表面上成功去除阿尔本达.
结论:
- 纯甲醇是一种高效的化学清洁剂,可以从受污染的NF/RO膜中去除阿尔本达.
- 有效的药物脱对于保持水处理中的膜分离过程的寿命和性能至关重要.
- 这项研究为解决膜系统中制药污染的实际解决方案提供了实用解决方案.
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