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基生物炭中的-联:对环境中复合重金属污染的有希望的补救措施

Xianzhen Li¹, Yiru Zhang², Wenmin Huang³

¹College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China.

Journal of environmental management

|June 8, 2024

概括

一种基于的新型/生物炭 (ALB/Si-Mg) 有效地从水和土壤中去除和等重金属. 这种增强的生物炭通过增加和含量来促进植物生长和土壤健康.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
土壤科学土壤科学

背景情况:

水和土壤中的重金属污染对环境和健康构成重大风险.
素衍生生物炭提供了补救的潜力,但通常需要修改以提高其容量.
开发多种重金属的高效吸附剂对于全面的环境清洁至关重要.

研究的目的:

为了合成和表征一种新的基于的/生物炭 (ALB/Si-Mg) 用于重金属的去除.
评估ALB/Si-Mg对 (Cd2+), (Pb2+),铜 (Cu2+) 和 (Zn2+) 的吸附性能.
评估ALB/Si-Mg在土壤修复中的有效性及其对植物生长的影响.

主要方法:

使用MgCl₂和水热氧化碳材料激活了红生物炭 (ALB),以产生ALB/Si-Mg.
材料特性包括表面积分析和功能组识别.
进行了批量吸附实验以去除重金属,并使用Pakchoi.进行了土壤整治试验.

主要成果:

与ALB相比,ALB/Si-Mg的特定表面积增加了1017.71倍,其中含有丰富的氧功能群和矿物质 (Mg₂SiO₄,MgO).
对于Cd²⁺,Pb²⁺,Cu²⁺和Zn²⁺的吸附能力分别为848.17,665.07,151.84和245.78毫克/克 (比ALB高29.09-140.45倍).
土壤应用增加了有效的和可交换,降低了重金属的生物可用性和植物吸收,并促进了Pakchoi的生长.

结论:

基于的/生物炭 (ALB/Si-Mg) 是水和土壤环境中多种重金属的高效吸附剂.
增强的吸附性归因于增加的表面积,功能组,以及Mg2SiO和MgO纳米颗粒的形成,促进了沉,离子交换和复杂化.
这项研究表明,用于复合重金属污染补救的生物炭的合二氧化和修改是一个有希望的方法.

关键词:

吸附方式吸附方式吸附方式环境水环境水沉重的精神上的精神.在Lignin的基础上.土壤整治土壤整治土壤整治

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