乙氨基和咖啡因在激活Tingui生物炭上的竞争性吸附:特征,建模和机制
Débora Federici Dos Santos1, Wardleison Martins Moreira2, Thiago Peixoto de Araújo3
1Department of Chemical Engineering, State University of Maringá, Maringá, Paraná, 87020-900, Brazil. pg54597@uem.br.
Environmental science and pollution research international
|November 26, 2023
概括
用氧化激活的Tingui生物炭有效地从水中去除乙氨基和咖啡因. 这项研究详细介绍了其特征,吸附性能和机制,突出了其用于净化水的潜力.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 吸附科学 吸附科学
背景情况:
- 像乙氨基和咖啡因这样的药物是常见的水污染物.
- 有效的清除策略对于环境保护和公共卫生至关重要.
- 生物炭是一种可持续的吸附剂,显示出对污染物去除的前景.
研究的目的:
- 用氧化 (TB-KOH) 激活的Tingui生物炭进行合成和表征.
- 评估TB-KOH对乙氨基和咖啡因去除的吸附能力.
- 为了研究吸附动力学,异热,热力学和吸附机制.
主要方法:
- 用氧化 (TB-KOH) 激活的Tingui生物炭的合成.
- 结核病-KOH的物理化学特征.
- 在单组分和双组分溶液中进行吸附实验.
- 动力,同热和热力学建模.
- 吸附机制的分析.
主要成果:
- 在激活后,TB-KOH表现出发达的多孔性和功能组 (-OH,C-O,C=O).
- 在单组分溶液中,乙氨基的最大吸附能力为424.7 mg/g,咖啡因的最大吸附能力为350.8 mg/g.
- 在双组分溶液中,乙氨基的容量为199.4 mg/g,咖啡因为297.5 mg/g.
- Sips模型最适合的异温数据;热力学表明内热性乙氨基和外热性咖啡因去除.
- 吸附机制涉及键和π-π相互作用.
结论:
- TB-KOH 是一种有效的吸附剂,可以去除乙氨基和咖啡因.
- 结核病-KOH 形成的多孔性和功能组增强了吸附.
- 结合和π-π相互作用是污染物去除的关键机制.
- 结核病-KOH显示了药物污染物在水中的修复的巨大潜力.
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