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通过用KOH进行一阶段热解来增强二二的吸附到由PET塑料制成的活性炭上

Yunhai Zhang¹, Qing Ma¹, Zihao Chen¹

¹School of Environmental Science and Engineering, Nanjing Tech University, Nanjing, 211816, People's Republic of China.

Environmental science and pollution research international

|October 18, 2023

概括

研究人员将废弃的聚乙烯二甲 (PET) 塑料回收成活性炭 (PET-AC),以从水中去除二甲 (DCF). 这种新的方法有效吸附新出现的污染物,为塑料污染提供可持续的解决方案.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
绿色化学绿色化学

背景情况:

塑料污染,特别是来自聚乙烯二甲 (PET) 的塑料污染,对环境构成重大威胁.
迫切需要有效的塑料废物管理策略和从水中去除新出现的污染物.

研究的目的:

开发一种用于将PET塑料回收成活性炭 (PET-AC) 的新方法.
研究PET-AC在吸附常见水污染物迪克洛芬 (DCF) 的有效性.
探索PET-AC在从水中去除其他制药和个人护理产品方面的潜力.

主要方法:

使用KOH激活辅助的一步性热解来将PET转化为PET-AC.
用静态瓶和动态柱测试来评估PET-AC对DCF的吸附性能.
进行了吸附动力学,热力学,XPS和FTIR分析,以了解吸附机制.

主要成果:

在700°C合成的PET-AC表现出高的DCF吸附能力,在45°C时为179.42 mg g−1.
发现热解温度和KOH添加有效控制PET-AC的孔隙结构.
DCF的吸附是自发的和内热的,主要是由诸如π-π相互作用和结合等物理力驱动的.

结论:

将废PET回收成PET-AC是一种生产高效吸附剂的可行策略.
PET-AC显示了从水中去除二二烯和其他新出现的污染物的显著潜力.
这项研究提供了一种可持续的方法来利用塑料废物和净化水.

关键词:

活性炭是一种活性炭.吸附方式吸附方式吸附方式狄克洛菲纳克 (Diclofenac) 是一种药物.药品和个人护理产品.塑料废弃物塑料废弃物聚乙烯四甲酸是一种聚乙烯四甲酸.

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