使用奇托-马龙酸薄膜进行高效的多离子吸附:使用响应表面方法进行增强
Vaishnavi Gomase1, Priyanka Doondani1, D Saravanan2
1Department of Chemistry, R.T.M. Nagpur University, Nagpur, 440033, India.
Environmental research
|November 29, 2023
概括
这项研究开发了一种桑-马龙酸吸附剂,可以有效地从水中去除六价,酸盐和化物离子. 这种环保材料具有很高的吸附能力和可重复使用性,为净化水提供了可持续的解决方案.
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 化学 化学
背景情况:
- 工业废水往往含有有毒的重金属和金属化物,如六价 (Cr(VI), (As(III) 和 (F-).
- 传统的水处理方法可能是昂贵的,并且在去除这些特定污染物方面效率较低.
- 基托是一种生物聚合物,对吸附有希望,但通常需要修改以提高其容量和稳定性.
研究的目的:
- 合成和表征一种基于基托与马龙酸 (CMA) 交联的新型吸附材料.
- 研究CMA吸附剂在从水溶液中去除CrVI,AsIII和F-离子方面的有效性.
- 优化吸附参数和评估吸附剂的性能,包括容量,动力学,热力学和可重复使用性.
主要方法:
- 奇托与马龙酸以1:0.5的质量比交联,形成一个膜吸附剂.
- 吸附剂的表征使用了FT-IR,TGA-DSC,SEM-EDX,XRD和BET表面积分析等技术.
- 批量吸附实验进行了不同的pH值,剂量,度,温度和时间,并使用响应表面方法 (RSM) 进行了优化.
主要成果:
- 在优化条件下,CMA吸附剂显示了超过95%的Cr,As,III和F-离子的去除效率.
- 吸附遵循伪二次动力学,并符合兰格穆尔异热模型.
- 的最大吸附能力为687.05 mg/g,为26.72 mg/g,为36.72 mg/g,为51.38 mg/g.
- 吸附过程是自发的和内热的,吸附剂在五个周期内显示出良好的可重复使用性.
- 合成过程是环保的,低E因子为0.0028.
结论:
- 与马龙酸 (CMA) 交联的奇托是一种高效和可持续的吸附剂,可从水中去除Cr,As,III和F-.
- 优化的CMA吸附剂具有出色的吸附能力和稳定性,使其适合于实际的水处理应用.
- 该研究强调了改性生物聚合物的潜力,作为解决复杂的水污染挑战的环保解决方案.
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