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在含有的污泥 (BCS) 中的化行为和动力学

Shan Zhong¹, Min Hu¹, Lishan Zhang¹

¹College of Life Sciences, Guilin University of Electronic Technology, 541004, PR China.

Environmental pollution (Barking, Essex : 1987)

|July 4, 2024

概括

含有的污泥存在很大的漏风险,特别是在酸性或性条件下. 了解的含量了解.

科学领域:

环境科学环境科学
地质化学地质化学
毒理学毒理学毒理学

背景情况:

含有的污泥 (BCS) 是炼废水处理的有毒副产品.
的特性 (离子半径小,电荷密度低) 增加了浸出和迁移的风险.
现有的关于BCS的泄漏行为数据有限.

研究的目的:

在各种环境条件下研究BCS中的泄行为.
阐明控制从BCS迁移的机制和动力学.
评估与BCS处置相关的环境风险.

主要方法:

在不同的pH值和温度下模拟环境漏试验.
先进的表面分析技术:SEM,XPS,ToF-SIMS,FTIR. 这种技术可以用于测量表面.
动力建模以确定漏机制和激活能量.

主要成果:

在国家条件下,的出明显超过标准,在10小时后稳定.
酸性 (pH ≤ 5) 和高度性 (pH = 14) 的条件促进了广泛的泄漏.
酸性条件 (pH4) 显示随着温度的增加,随着反应受控动力学 (明显激活能量:53.05 kJ mol-1).

结论:

由于高泄漏潜力,BCS对环境构成重大危险.
酸性条件通过引起颗粒解离,表面粗和溶解来增强出水.
反应动力学,由Be(OH) 2转化为可溶性物种驱动,控制的迁移.

关键词:

显而易见的激活能量柏利是一种的物质.含有的污泥含有.漂水动力学漂水动力学

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