在优化条件下的工业废水中去除COD的玉米活化碳的性能
Ghada A El Gamal1, Ahmed M Gomaa2
1Mechatronics Engineering Department, Faculty of Engineering and Technology, Egyptian Chinese University, Cairo, Egypt. Ghada.a.elgamal@gmail.com.
Scientific reports
|November 18, 2025
概括
来自玉米的活性炭 (MTAC) 有效地从工业废水中去除有机污染物,显著减少化学氧气需求 (COD). 这种可持续吸附剂具有成本效益,性能优于商业替代品.
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:
- 由于有毒有机和无机污染物,工业废水对环境构成重大风险.
- 活性炭吸附是一种经过验证的,可扩展的废水整治方法.
- 农业废物为可持续吸附材料提供了潜在的来源.
研究的目的:
- 评价玉米取的活性炭 (MTAC) 用于去除有机污染物和减少工业废水中的化学氧气需求.
- 为了优化吸附参数,包括pH值,温度,吸附剂剂量,接触时间和速度.
- 与商业活性炭 (CAC) 相比,评估MTAC的经济可行性和可持续性.
主要方法:
- 来自农业废物 (玉米) 的MTAC的合成和表征 (FTIR,SEM,XRD).
- 优化吸附过程参数用于COD去除.
- 使用朗格穆尔和弗洛因利希模型分析吸附平衡.
- 热力学研究以确定吸附的自发性和热量.
- 评估MTAC的可重复使用性和成本效益.
主要成果:
- MTAC显示了高表面积 (510.4 m2/g) 和有效的污染物去除.
- 对于高吸附能力 (464 mg/g) 和COD去除 (92.8%) 的最佳条件是在pH 6和30°C时确定.
- 最大效率 (96.6%) 和容量 (484 mg/g) 在3 g/L剂量,45 分钟接触时间和每分钟 200 转时实现.
- 吸附遵循兰格穆尔和弗朗德利希模型,表明自发和外热过程.
- 在5个再生周期后,MTAC保持了超过85%的效率,并且比CAC更具成本效益.
结论:
- 来自玉米的活性炭是一种高效,可持续和经济高效的吸附剂,用于工业废水处理.
- 这个过程是自发的和外热的,吸附剂的可重复使用性很好.
- 使用MTAC符合循环经济原则,并有助于实现可持续发展目标 (SDG) 6,12和13.
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