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铜的吸附 (II) 在生物炭-酸-水系统中

Yingquan Li^1,2, Baowei Zhao³, Tingting Shang¹

¹School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, Gansu, People's Republic of China.

Scientific reports

|July 10, 2025

概括

生物炭 (BS) 和酸 (HA) 的组合与单独的生物炭相比,显著增强了从水中吸附的铜 (Cu(II)). 这种BS+HA系统提供了更好的重金属修复潜力.

科学领域:

环境化学环境化学
材料科学材料科学材料科学

背景情况:

重金属污染,特别是铜 (Cu) 污染,对水生生态系统和人类健康构成重大风险.
生物炭和酸以其重金属吸附特性而闻名,但它们的协同效应尚未得到充分探索.

研究的目的:

通过生物炭 (BS) 和酸 (BS+HA) 对Cu(II的联合吸附进行研究.
为了评估pH值,初始Cu (II) 度,温度和Ca2+离子强度对Cu (II) 吸附的影响.

主要方法:

使用单一生物炭 (BS) 和生物炭与酸 (BS+HA) 系统进行了吸附实验.
系统地分析了变化的溶液pH,初始Cu (II) 度,温度和Ca2+离子强度的影响.

主要成果:

在BS和BS+HA系统中,随着pH值的上升,Cu (II) 的吸附量增加,BS+HA在pH值4左右达到最大容量.
吸附能力随着较高的初始Cu (II) 度和升高的温度而增加,表明自发和内热过程.
离子 (Ca2+) 在BS系统中增强了吸附,但对BS+HA系统的影响很小.

结论:

与单独的BS相比,BS+HA系统显示出更高的Cu (II) 吸附能力.
胺酸显著提高了生物炭的重金属吸附性能.
这些发现为使用联合生物炭和湿酸用于Cu (II) 污染水的整治提供了理论基础.

关键词:

吸附方式吸附方式吸附方式生物炭是一种生物炭.(II) 的意思是胺酸是一种胺酸.

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