Committee Draft
ISO/CD TS 21497
Nanotechnologies ― Method for the removal of carbon nanotubes, graphene and carbon nanohorns from industrial and research wastewater using hypochlorite
Reference number
ISO/CD TS 21497
Edition 1
© ISO 2026
Committee Draft
Under development
A draft is being reviewed by the committee.

Abstract

This technical specification describes a method to remove carbon-based nanomaterials, such as carbon nanotubes, nano-graphene, and carbon nanohorns from industrial and research wastewater by using hypochlorite compounds, such as sodium hypochlorite. This method is applicable to aqueous solutions of carbon nanomaterials of concentrations lower than 100 ppm (~100 mg/L). For high concentration solutions, additional process(es) may be required.

General information

  • Status
     : Under development
    Stage
    : Close of comment period [30.60]
  • Edition
     : 1
  • Technical Committee :
    ISO/TC 229
  • RSS updates

Life cycle

Sustainable Development Goals

This standard contributes to the following Sustainable Development Goals

3
Good Health and Well-being
6
Clean Water and Sanitation
8
Decent Work and Economic Growth
12
Responsible Consumption and Production
14
Life Below Water
15
Life on Land

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