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在水溶液和土壤中使用Fe/Ca修饰生物炭同时修复As{\displaystyle As}V,Cd{\displaystyle C}II和Pb{\displaystyle Pb}II

Yan Zhou¹, Wenhui Liu¹, Dandan Chen¹

¹School of Energy & Mechanical Engineering, Nanjing Normal University, Nanjing, China.

Waste management & research : the journal of the International Solid Wastes and Public Cleansing Association, ISWA

|August 1, 2025

概括

一种新的铁/改性生物炭 (BC) 有效地从水和土壤中去除,和. 这种生物炭增强了土壤中的污染物稳定性,并显示了重金属的高去除效率.

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:

水和土壤的重金属污染对环境和健康构成重大风险.
,和是常见的有毒污染物,需要有效的整治策略.
基于生物炭的材料为污染物封存提供了一个有希望的途径.

研究的目的:

开发和评估一种新的铁/改性生物炭 (1Ca-Fe@BC),用于同时去除,和.
研究这些重金属在水溶液中的吸附机制和相互作用.
评估1Ca-Fe@BC在污染土壤中固定,和的有效性.

主要方法:

从玉米茎中制备Fe/Ca修饰生物炭.
批量吸附实验以确定去除效率和研究水溶液中的金属相互作用.
土壤培养实验评估土壤中重金属的长期稳定性和固定性.

主要成果:

1Ca-Fe@BC表现出高的去除效率:的46.3%,的76.3%,在水溶液中的93.6%.
和通过三元复合体的形成增强了的吸附.
观察到和之间的合作和竞争性吸附效应,的亲和力更高.
在土壤中,1Ca-Fe@BC通过增强阴离子交换能力和pH,减少溶解的有机碳,增加了稳定性.

结论:

1Ca-Fe@BC是一种高效的材料,可同时对,和在水溶液和受污染的土壤中进行修复.
材料的性能受到目标重金属之间的复杂相互作用的影响.
用铁和修改生物炭显著提高了其重金属吸附和土壤稳定能力.

关键词:

经过修改的Fe/Ca.多重污染多重污染生物炭是一种生物炭.这是一种重金属,重金属.同时进行整治.

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