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温度和酸修饰污泥在去除和方面的性能

Meiyang Jiang¹, Ruixin Chen¹, Benyi Cao²

¹Institute of Geotechnical Engineering, School of Transportation, Southeast University, Nanjing, 210096, China.

Environmental science and pollution research international

|May 26, 2023

概括

改性含的污泥有效地从废水中去除 (Pb) 和 (Cd). 这种新型吸附剂显示出高容量和重金属修复工业应用的潜力.

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:

废水处理会产生含的污泥,这给废水处理带来了挑战.
水中的重金属污染 (和) 需要有效的去除方法.

研究的目的:

研究改性含污泥作为和去除吸附剂的潜力.
为了表征修改后的污泥并优化吸附条件.

主要方法:

含的污泥通过热处理 (400°C) 和酸液 (2.5mol/L HCl) 进行了修改.
鉴定包括SEM,XRD,FTIR和BET分析.
吸附实验是在优化的条件下进行的 (pH6.3 g/L剂量,特定反应时间和度).

主要成果:

修改后的污泥显示了Pb (90.72 mg/g) 和Cd (21.39 mg/g) 的显著吸附能力.
吸附动力学遵循伪二阶模型 (R2 > 0.99),表明化学吸附.
吸附机制包括离子交换,静电相互作用,表面复杂化,阴离子-π相互作用,共同沉和物理吸附.

结论:

改性含污泥是一种有希望的,具有成本效益的吸附剂,用于从废水中去除Pb和Cd.
吸附过程是高效的,单层,和化学性质.
这种方法为污泥价值化和重金属整治提供了可持续的解决方案.

关键词:

吸附方式吸附方式吸附方式污染污染污染污染污染污染修改后的污泥是一种污泥.稳定化稳定化稳定化

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