使用枣种子作为天然吸附剂从废水中去除马六合绿;异热,动力学,热力学和批量吸附工艺设计
Faisal Hassan Sorour1, N M Aboeleneen2, N M Abd El-Monem3
1Chemical Engineering Department, Canal High Institute for Engineering and Technology, Suez, Egypt.
International journal of phytoremediation
|February 27, 2024
概括
枣子种子有效地从废水中去除马六合绿色染料. 这种农业废物为染料吸附提供了一个可持续的解决方案,由动力学和热力学研究证实.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 废物管理 废物管理
背景情况:
- 染料污染废水造成环境风险.
- 农业废弃物,就像枣子种子一样,是一个未充分利用的补救资源.
研究的目的:
- 为了评估日种子 (DS) 作为马六甲绿 (MG) 染料的吸附剂的有效性.
- 为了描述枣种子和优化吸附条件.
主要方法:
- 使用FTIR,SEM,BET和EDX进行了日种子的表征.
- 进行了批量吸附实验,以确定最佳pH值,吸附剂剂量,接触时间和温度.
- 应用了吸附同热法 (Langmuir, Freundlich, Temkin) 和动力模型 (伪二阶).
主要成果:
- 对于MG染料去除的最佳条件是pH5,0.1g吸附剂剂量,25°C和30分钟的接触时间.
- 弗洛伊德利希等热量最好地描述了吸附过程,表明一个异质的表面.
- 伪二次运动模型表明,粒子内部扩散是速度限制的.
结论:
- 枣种子是一种可行的,低成本的吸附剂,用于马拉绿色染料的去除.
- 吸附过程是自发的,外热的,涉及物理吸附和化学吸附.
- 用枣种子处理废水符合可持续废物管理原则.
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