Evaluation of the effectiveness of the use of carbon fibres using salt of ethylenediaminetetraacetic acid for the purification of water bodies from heavy metals

Abstract

As a result of various human activities, a large amount of heavy metals enters water bodies. Restoration of the environment with the help of plants is of great interest all over the world due to the possibilities offered by phytoremediation technology. This article is devoted to the development of an approach to wastewater treatment from heavy metals using Eichhornia using carbon fibre, which contributes to greater absorption capacity. It is proposed to use carbon fibre as “artificial roots” of plants. The article presents a scheme of an experimental setup with the use of carbon fibre in various combinations, including the use of a chelating agent - disodium salt of ethylenediaminetetraacetic acid (Trilon B) with various degrees of washing. It has been established that Eichhornia shows good results in the accumulation of heavy metals (Cu, Ni, Zn) in plant organs. The results indicate a positive effect from the use of carbon fibre as “artificial roots” in combination with Trilon B in relation to copper and zinc. The amount of remaining сopper and zinc in the water is the lowest at 4% and 8%. • Wastewater treatment from excess zinc, copper, and nickel. • Use of carbon fibres and chelating agent Trilon B for water treatment. • Sorption of copper, zinc, and nickel from wastewater using carbon fibres and Trilon B. • The efficiency of wastewater treatment from zinc and copper was more than 90%. • Carbon fibre and Trilon B can be used to improve wastewater treatment from heavy metals (Zn, Cu).