通过废物衍生的碳吸附剂有效地从水系统中去除染料:物理化学表征和吸附研究
Ali Ender Kuyucu1, Ahmet Selçuk2, Yunus Önal3
1Department of Chemistry, Institute of Science, Yüzüncü Yıl University, Van, 65080, Turkey.
Scientific reports
|August 6, 2025
概括
核桃中的活性炭有效地从废水中去除了反应蓝19和反应红195等染料. 这种具有成本效益的吸附剂具有很高的容量和环境应用的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 吸附科学 吸附科学
背景情况:
- 活性炭被广泛用于染料吸附,因为它们的成本效益和高表面积.
- 废水中的染料污染给环境带来了挑战,需要有效的去除方法.
- 核桃的废弃物是活性碳合成的可持续前体.
研究的目的:
- 通过KOH激活,从核桃废物中合成活性碳.
- 为了研究合成活性炭对反应蓝色19 (RB19) 和反应红色195 (RR195) 的吸附性能.
- 在各种实验条件下分析吸附行为,并建模吸附同热量和热力学.
主要方法:
- 活性炭是通过KOH激活 (1:3比率) 从核桃废物中制备的.
- 吸附实验进行了不同的染料度 (501250毫克L-1),吸附剂剂量 (0.11.0克) 和自然pH (6.87.2).
- 进行了吸附平衡,同热模拟 (Langmuir, Freundlich, Temkin, D-R) 和热力学分析.
主要成果:
- 合成的活性炭表面积很大 (2347.4 m2/g).
- 在RB 19的最大吸附能力为1227.17 mg g-1和RR 195的最大吸附能力为235.74 mg g-1.
- 弗洛伊德利希模型最好地描述了吸附,表明异质表面上的多层吸附;过程是自发的和内热的.
结论:
- 来自核桃的活性炭显示了RB 19和RR 195的优异吸附性能.
- 吸附剂的高表面积和有利的吸附特性表明它在废水处理中具有实际适用性.
- 该研究强调了使用农业废物去除染料的可持续和高效方法.
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