使用活性果汁棒木炭从水性介质中去除微塑料
Nur Alom1,2, Tapati Roy3,2, Tanny Sarkar1,2
1Department of Chemistry, Khulna University of Engineering & Technology, Khulna, 9203, Bangladesh.
Heliyon
|September 23, 2024
概括
这项研究开发了木质棒激活木炭 (JSAC) 来从水中去除聚乙烯微塑料 (PVC-MPs). JSAC有效吸附PVC-MPs,为微塑料污染提供了一个有希望的环保解决方案.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 化学 化学 化学
背景情况:
- 微塑料 (MP) 由于其污染物承载能力,造成了重大环境和健康风险.
- 迫切需要有效和环保的方法来从水生环境中去除MP.
研究的目的:
- 开发和描述木棒激活木炭 (JSAC) 用于吸附基于聚乙烯的微塑料 (PVC-MPs).
- 为了优化吸附过程并阐明潜在的相互作用机制.
主要方法:
- JSAC是通过木质棒的热解,然后通过HCl激活来制造的.
- 鉴定包括UV-Vis,FT-IR,XRD和SEM分析.
- 吸附实验对pH,吸附剂剂量和接触时间进行了优化.
主要成果:
- 在优化条件下 (pH 7,10 g L-1 JSAC,120分钟) 实现了94.12%的PVC-MP吸附.
- 吸附动力学表明了结合的静电,键,π-π和疏水相互作用.
- 兰迈尔异热模型预测最大吸附能力为4.4668 mg/g.
- 密度函数理论的计算证实了强大的PVC-MP吸附 (-269 kcal/mol).
结论:
- JSAC展示了高效率和强大的多孔结构来清除PVC-MP.
- 开发的JSAC是一种可行的,环保的吸附剂,用于处理水中的微塑料污染.
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