Biochar application to detoxification of the heavy metal-contaminated fluvisols

Tatiana Bauer,Maria Zharkova,Tatiana Minkina,Marina Burachevskaya,Saglara Mandzhieva,D Rudoy,S Ignateva

doi:10.1051/e3sconf/202017509009

Abstract

Sorption of heavy metals on solid matrices such as soils is one of the key processes which determine the fate of contaminants in the environment. Knowledge of adsorption behavior of heavy metals using biochar is essential for their application in soil remediation. Using the adsorption method, the possibility of using a wood biochar to detoxify Fluvisols contaminated with heavy metals (for example, copper) was studied. It is shown that the addition of biochar increases the metal adsorption capacity of soil. The results were analysed using the Langmuir and Freindlich isotherm equations. It was concluded that biocar can be applied to immobilize heavy metals in contaminated soils.

Highlights

Intensification of the technogenic pollution of soil calls for scrutinization of the behavior of contaminants, heavy metals included
We studied Fluvisols sampled from the Severskii Donets River floodplain (Kamensk-Shakhta district, Rostov region)
In solutions with the initial Cu (II) concentration of 1.0 mM∙l–1, the degree of metal ion extraction falls to 96% after the sorptional interaction with soil

Summary

Introduction

Intensification of the technogenic pollution of soil calls for scrutinization of the behavior of contaminants, heavy metals included. In this connection, assessment of the adsorption of heavy metal ions by soil in the presence of a carbonaceous sorbent is of particular interest. Assessment of the adsorption of heavy metal ions by soil in the presence of a carbonaceous sorbent is of particular interest Due to their large specific surface area (SSA), rich porous structure, and high adsorption capacity, carbonaceous adsorbents have been widely used in inorganic pollutant sorption [9]. High technical applicability of copper and its extensive use in different industrial fields are responsible for the soil pollution with this metal

Materials and Methods

Results and Discussion

Conclusions