基多纳米颗粒的吸附行为,用于从水溶液中单一和二元去除阴离子和阴离子染料
Samah Benamer-Oudih1,2, Djamel Tahtat3, Assia Nacer Khodja3
1Nuclear Research Center of Algiers, BP-399, Algiers, Algeria. S.oudih@crna.dz.
概括
酸盐纳米颗粒有效地从废水中去除了阴离子 (甲蓝) 和阴离子 (甲) 染料. 这些纳米粒子在单一和同时染料去除应用中都显示出高吸附能力.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 污染废水的阴离子和阴离子染料带来了环境挑战.
- 素纳米颗粒 (ChN) 由于其独特的特性,具有作为吸附剂的潜力.
研究的目的:
- 为了研究CHN的有效性,单一和同时去除甲基蓝 (MB) 和甲基色 (MO).
- 为了表征CHN并优化染料去除条件.
主要方法:
- 使用三聚酸盐 (TPP) 的离子凝方法合成ChN.
- 描述涉及诸如zetazizer,FTIR,BET,SEM,XRD和pHPZC之类的技术.
- 吸附实验是通过不同的pH值,时间和染料度进行的.
主要成果:
- 在性pH下,MB去除是最佳的,而MO去除则有利于单次吸附的酸性条件.
- 同时移除MB和MO在中性条件下是有效的.
- 吸附动力学遵循伪二阶模型,等温体由兰格穆尔,弗洛因德利希和雷德利希-彼得森模型描述.
- 在单一系统中,MB的最大吸附容量为315.01 mg/g,MO的最大吸附容量为257.05 mg/g,在二元系统中,MB的最大吸附容量为49.05 mg/g,MO的最大吸附容量为137.03 mg/g.
- 在同时吸附过程中观察到MB和MO之间的对抗行为.
结论:
- 素纳米颗粒显示出作为吸附剂的显著潜力,可以从废水中去除阴离子和阴离子染料.
- 这项研究强调了ChN在单一和二进制染料去除方面的多功能性,并为每个场景提供了最佳的条件.
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