在吸附性去除后,同时确定水溶液中的离子聚合物和重金属离子度,使用环保活性生物碳
Marlena Groszek1, Małgorzata Wiśniewska1, Piotr Nowicki2
1Department of Radiochemistry and Environmental Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University in Lublin, Lublin, Poland.
Frontiers in chemistry
|July 17, 2025
概括
来自网和薄荷残留物的环保活性生物碳有效地从水中去除离子聚合物和重金属. 这些可持续吸附剂在废水处理方面表现有前途,竞争性吸附会影响去除效率.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 工业和家庭来源的水污染需要先进的废水处理.
- 来自可再生生物质的活性生物碳提供可持续和成本有效的吸附解决方案.
- 网和薄荷残留物是吸附剂生产中未充分利用的生物质资源.
研究的目的:
- 为了制备和表征从网和薄荷残留物中活性化生物碳.
- 评估这些生物碳在从水溶液中去除离子聚合物和重金属离子方面的效率.
- 研究聚合物和金属离子之间的竞争性吸附机制.
主要方法:
- 用二氧化碳进行单阶段物理激活,以产生活性生物碳.
- 获得的吸附剂的全面物理化学表征 (质地,表面特性,化学成分).
- 吸附实验以确定包括二进制系统在内的聚烯酸,聚乙烯胺,CdII和AsV离子的去除能力.
主要成果:
- 活性生物碳表现出适度的表面积 (368-666 m2/g) 和高表面功能组含量 (2.19-4.89 mmol/g).
- 离子聚合物的最大吸附能力为80mg/g,重金属离子的最大吸附能力为4-19mg/g.
- 观察到竞争性吸附;聚合物吸附在相互的二进制系统中增加,而在聚合物和金属离子的存在下,所有吸附物吸收都减少了.
结论:
- 来自刺和薄荷残留物的环保活性生物碳有效地去除离子聚合物和重金属离子.
- 该研究通过吸附-脱附,表面和电动分析确定了可能的分离机制.
- 这些发现突出了农业废物衍生生物碳在可持续废水处理方面的潜力.
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