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从水溶液中有效地去除Cd,使用P-加载的Ca-Mn浸生物炭

Cheng Qiu¹, Chengwei Wang^2,3, Qinghai Liu¹

¹Institute of Agricultural Product Quality Standard and Testing Research, Tibet Academy of Agricultural and Animal Husbandry Sciences, Lhasa 850032, China.

Molecules (Basel, Switzerland)

|November 25, 2023

概括

含酸盐的Ca-Mn浸生物炭有效地从废水中去除 (II). 这种新型吸附剂显示了增强的吸附能力和独特的去除机制,为重金属污染提供了有希望的解决方案.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
化学化学化学

背景情况:

废水中的 (II) 污染是全球日益严重的环境问题.
对于去除的酸盐吸附吸附剂的研究是有限的.
Ca-Mn浸生物炭 (CMBC) 是一种潜在的吸附材料.

研究的目的:

研究 (II) 在含酸盐的Ca-Mn浸生物炭 (P_s-CMBC) 上的吸附行为和机制.
评估P_s-CMBC在去除 (II) 的效率和能力.
为了比较P_s-CMBC与未经修改的生物炭和CMBC的吸附性能.

主要方法:

合成含酸盐的 Ca-Mn 浸生物炭 (P_s-CMBC).
批量实验研究Cd (II) 吸附动力学和异温物.
使用SEM-EDS,FTIR和XPS进行吸附剂的表征.

主要成果:

在P_s-CMBC上对Cd (II) 的吸附平衡在2小时内达到.
兰迈尔异热模型最好地描述了Cd (II) 吸附.
P₇₅-CMBC的最大Cd (II) 吸附能力为70.13 mg·g-1 ,明显高于生物炭和CMBC.
较高的pH值 (5-7) 对吸附能力的影响最小.
对于P_s-CMBC的关键吸附机制包括静电吸引,表面复杂化,Cd (II) -π相互作用和与P=O.O.协调.

结论:

含酸盐的Ca-Mn浸生物炭是一种高效的吸附剂,可以从水溶液中去除 (II).
增强的吸附能力归因于酸盐负载和CMBC属性的协同效应.
P_s-CMBC为处理废水中的重金属污染提供了一个有前途且高效的材料.

关键词:

吸附吸附是一种吸附.水溶液中的水溶液.和是最重要的元素.这是一个机制机制.含有酸盐的Ca-Mn浸生物炭.

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