来自水溶液的 (II) 吸附过程,通过与新鲜的花生绿色贝粉末混合的活性炭
Reza Davarnejad1, Saeedeh Afshar2, Masoud Pirhadi3
1Department of Chemical Engineering, Faculty of Engineering, Arak University, Arak, 38156-8-8349, Iran. reza_davarnejad@yahoo.com.ph.
Scientific reports
|January 3, 2025
概括
与活性炭混合的新鲜花生绿皮有效地从废水中去除 (II). 在最佳条件下,通过物理吸附过程实现了99.25%的去除,其细节由伪二次动力学和兰格穆尔异热法详述.
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:
- 农业废物,特别是新鲜的核桃花绿皮,构成了环境挑战.
- 水溶液中的 (II) 污染对生态系统和人类健康构成重大风险.
- 活性炭是一种已知的吸附剂,但其应用可以通过与其他材料混合来增强.
研究的目的:
- 为了研究新鲜的花生绿皮与活性炭混合的潜力,作为消除 (II) 的吸附剂.
- 使用响应表面方法 (RSM) 来优化吸附过程.
- 为了阐明混合吸附剂的吸附动力学,异热和热力学特性.
主要方法:
- 新鲜的核桃花绿色外被加工并与活性炭混合.
- 在响应表面方法 (RSM) 下使用中央复合设计 (CCD) 来优化pH,接触时间和吸附剂剂量等参数.
- 分析了吸附动力学,同热量和形态特征 (SEM,XRD,FTIR,EDX).
主要成果:
- 在最佳条件下 (pH6.13,36.68 g/l Hg(II),9.21 g/l 贝粉,7.25 g/l 活性炭) 产生了99.25%的 (II) 去除.
- 伪二次运动模型最好地描述了吸附过程 (R2 ≈ 1).
- 兰慕尔异热模型表明同质吸附,这是物理吸附过程的特征.
结论:
- 新鲜的花生绿皮和活性炭混合物是废水中 (II) 的高效吸附剂.
- 吸附过程主要由物理吸附控制,优化条件导致几乎完全的去除.
- 这项研究强调了废物利用和水资源整治的可持续方法.
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