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Updated: May 30, 2025

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缓解土壤中的污染,使用生物炭,硫基生物炭和其他有机修改剂

Tianzhi Huang¹, Imran^2,3

¹Research Center of Rural Environmental Protection and Green Low-carbon Development, Mianyang Teachers College, Sichuan, China.

International journal of phytoremediation

|January 27, 2025

概括

用硫修饰的生物炭 (SMB) 有效地使污染土壤中的 (Cd) 等重金属不动. 与生物炭 (BC) 相比,SMB显示出更高的吸附性和稳定性,提供可持续的土壤修复解决方案.

科学领域:

环境科学环境科学
土壤科学土壤科学
地质化学地质化学

背景情况:

重金属污染对土壤健康和生态系统构成重大风险.
生物炭 (BC) 和其改性形式正在成为土壤修复的有希望的材料.
了解这些变化的吸附机制和稳定性对于有效的污染物管理至关重要.

研究的目的:

评估硫基改性生物炭 (SMB) 在修复 (Cd) 污染土壤中的有效性.
为了比较SMB的吸附能力和稳定性与未经修改的生物炭 (BC) 和其他修改物,如酸盐矿物质 (PSM) 和堆肥.
为了阐明SMB的吸附机制,用于Cd的固定.

主要方法:

对Cd.的各种修改 (SMB,BC,PSM,堆肥) 的吸附能力和脱吸百分比进行比较分析.
在不同的离子强度 (0.010.1 mol L-1) 和pH值 (57) 下研究吸附行为.
确定Cd吸附机制,包括表面沉,离子交换和与硫化合物的相互作用.

主要成果:

SMB表现出最高的Cd吸附能力 (17.67毫克g-1),其次是BC (12.82毫克g-1),PSM和堆肥.
无论是BC还是SMB,都表现出高吸附率和低脱吸率,表明稳定的Cd固定.
SMB的应用增加了土壤的pH值,并显著降低了可用的Cd,证实了其修复潜力.

结论:

硫修饰生物炭 (SMB) 是一种高效的修改剂,用于在污染土壤中固定Cd.
由于增强的吸附机制,SMB与未经修改的生物炭和其他测试材料相比提供了更好的性能.
对于重金属污染土壤的修复,SMB提出了一种可持续且有前途的解决方案.

关键词:

生物炭是一种生物炭.Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd Cd 在线播放在线播放在线播放在线播放减轻风险的缓解方法有机变更有机变更硫改性生物炭是一种硫改性生物炭.

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