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核桃生物炭对Cu和Pb共同污染的土壤的修复效应在不同的利用类型中

Qin Peng¹, Ping Wang², Chao Yang³

¹Chongqing Key Laboratory for Resource Utilization of Heavy Metal Wastewater, Aquatic Ecosystems in the Three Gorges Reservoir Region of Chongqing Observation and Research Station, Chongqing University of Arts and Sciences, Yongchuan, 402160, PR China; College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, PR China.

Journal of environmental management

|June 2, 2024

概括

核桃生物炭有效地稳定了受污染的土壤中的铜和,改善了土壤的健康,并为环境修复提供了可持续的解决方案.

科学领域:

环境科学环境科学
土壤科学土壤科学
材料科学材料科学材料科学

背景情况:

生物炭在土壤修复和碳封存方面提供了双重好处,这对农业和生态可持续性至关重要.
核桃的废弃物为生产功能生物炭提供了可行的原料.

研究的目的:

为了从核桃废物中制备多孔生物炭,使用热解和蚀.
为了研究这种生物炭在同被污染的土壤中稳定铜 (Cu) 和 (Pb) 的有效性.
探索不同土壤类型和利用对生物炭稳定机制的影响.

主要方法:

从核桃的废弃物中制备有孔的生物炭,通过热解和in-situ蚀.
在Cu和Pb共同污染的土壤中评估生物炭性能的化研究.
对土壤特性 (pH,CEC,SOM) 的分析和重金属的顺序提取.

主要成果:

生物炭显著降低了可生物利用的Cu (8.5-91.68%) 和Pb (5.03-88.54%).
土壤的pH值,阴离子交换能力 (CEC) 和土壤有机物 (SOM) 通过生物炭的应用得到了增强.
生物炭促进了不稳定的Cu和Pb分量的转化为稳定的形式,其机制因土壤类型而异.

结论:

开发的核桃生物炭有效地稳定了Cu和Pb共同污染的土壤.
稳定机制包括复杂化,去质子化,表面静电吸附和离子交换,这取决于土壤特征.
这项研究支持使用环保生物炭来定制土壤修复策略.

关键词:

生物炭是一种生物炭.同时污染的情况.重金属是一种重金属.土壤利用类型土壤利用类型

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