使用性铁废料从水中有效地去除酸盐:一个响应表面方法方法的方法
Mai Hassan Roushdy1, Nada Amr Elkhashab1, Ahmed Ibrahim Osman2
1Chemical Engineering Department, Faculty of Engineering, The British University in Egypt (BUE), El-Sherouk, Cairo, Egypt.
Frontiers in chemistry
|October 17, 2024
概括
软铁 (DCI) 固体废物有效地从水中去除酸盐离子,达到98.9%的去除率. 这项研究支持循环经济原则,通过将工业废物重新利用为酸盐吸附剂来治理水.
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:
- 水资源短缺是一个全球性挑战,需要创新的补救解决方案.
- 工业固体废物,如性铁 (DCI),是环境应用中未得到充分利用的资源.
- 水体中的酸盐污染有助于优化和生态系统退化.
研究的目的:
- 研究DCI固体废物的有效性,作为从水溶液中去除酸离子的低成本吸附剂.
- 探索DCI废物的潜力,以支持水处理中的循环经济倡议.
- 为了优化吸附条件并了解吸附机制.
主要方法:
- 使用XRD,XRF,FTIR和颗粒大小分析进行DCI固体废物的表征.
- 用不同酸盐度,吸附剂剂剂量和接触时间进行批量吸附实验.
- 使用响应表面方法 (RSM) 和设计专家V13.3优化吸附参数.
- 动力学,异热学和热力学分析以阐明吸附机制.
主要成果:
- 在DCI固体废物中,酸盐去除效率显著,高达98.9%.
- 吸附过程遵循伪二次动力学,最好用兰木尔异热模型来描述,最大吸附容量 (qmax) 为0.28 mg/g.
- 为了最大限度的去除,优化条件包括10mg/L的酸盐度,pH值8,室温,9分钟的接触时间和0.5g/L的吸附剂剂量.
- 热力学分析显示了自发和内热吸附过程.
结论:
- DCI固体废物是一种可行的和可持续的吸收剂,用于酸盐的去除,有助于水资源的整治和循环经济.
- RSM有效地确定了最大限度地提高酸盐吸附的最佳条件.
- 该研究强调了将工业废物用于环境解决方案的潜力.
相关概念视频
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