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Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
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同时解决两个环境问题:从混合塑料废物中获得的微孔碳用于CO2捕获.

Xiaoli Zhou1, Liyao Zhu2, Weiliang Dong3

  • 1Key Laboratory for Waste Plastics Biocatalytic Degradation and Recycling, Nanjing Tech University, Nanjing, 211816, PR China; College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, PR China.

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概括

这项研究将混合塑料废物转化为有孔的碳,用于二氧化碳 (CO2) 捕获. 由此产生的材料具有高的二氧化碳吸收和吸附率,为塑料污染和碳排放提供了双重解决方案.

关键词:
自生压力碳化自生压力碳化.碳二氧化碳 (CO2) 吸附方式激活KOH的激活方式塑料废弃物塑料废弃物有孔的碳是多孔的碳.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 环境科学 环境科学
  • 化学工程是化学工程的重要组成部分.

背景情况:

  • 塑料废物和碳排放是全球面临的重大挑战.
  • 之前的研究重点是单一的塑料类型 (例如PET) 用于二氧化碳捕获材料.
  • 用混合塑料废弃物 (MPW) 作为功能材料的利用对于实际应用至关重要.

研究的目的:

  • 从MPW开发多孔碳材料,以有效捕获二氧化碳.
  • 调查激活方法对材料性能的影响.
  • 为了评估合成的多孔碳的二氧化碳吸附性能.

主要方法:

  • 混合塑料废物 (MPW) 使用级联自生压力碳化 (APC) 进行处理.
  • 用氧化物 (KOH) 进行化学激活,以创建多孔结构.
  • 测量了二氧化碳吸附能力,动力学,选择性和循环稳定性.

主要成果:

  • 从MPW通过APC实现了56%的碳产量.
  • 在KOH/C比为4时获得了最佳的多孔碳,呈现出很大的微孔面积.
  • 该材料的最大二氧化碳吸附率为2.7 mmol g−1 在298 K和1 bar,其动力学快且具有良好的N2选择性.

结论:

  • 来自MPW的多孔碳是一种可行的吸收剂,用于二氧化碳捕获.
  • 开发的材料具有很高的二氧化碳吸收率,快速吸附,以及出色的循环稳定性.
  • 这种方法为塑料废物管理和减轻碳排放提供了一个可持续的途径.