Abstract
Carbon nanotubes has been a hot topic in the last 30 years as "the future material of manufacturing and electronic compounds". Besides this, the world is under high distress trying to abate the climatic effects of greenhouse gases such as carbon dioxide. Bergen carbon solutions AS is a startup company developing CNFs from carbon dioxide by molten electrocatalysis to add value to the economy using CO2 as a resource. However, the applicability of this magnificent material is restricted to the carbonaceous and transition metal impurities in the end product. Such impurities has proved to be a challenge to eliminate ever since tubular nanomaterials were discovered. In spite of this, several methods from scientific literature have been compared and evaluated to propose the most suitable cleansing technique for the company for an efficient and low cost upscaling of their carbon manufacturing. The result of Goaks method are superior to others. However, adapting a multistep method which also applies magnetic separation and Fenton chemistry is also a promising low cost alternative to achieve the highly applicable, ECO-C1 grade purity at a large scale.
