Introduction Soil contamination is a global environmental problem. It is caused by solid or liquid hazardous substances, such as trace amounts of toxic metals, mixing with natural soil. Contaminated areas are often those with mining activities or agricultural land affected by the use of metal-containing fertilizers. Mining and mineral processing, in particular, generate large quantities of mining waste byproducts. These are collected in mine waste and tailings heaps and can cause serious soil contamination through spills. The recent accident at the Talvivaara mining site in Sotkamo, Finland, is an example of how a major tailings dam leak caused severe soil contamination by releasing wastewater with high concentrations of nickel and zinc into the nearby area. The main focus of this report is the removal of heavy metal contaminants from soil. These include essential heavy metals such as Fe, Cu, Mn and Ni, those needed by living organisms, and non-essential heavy metals such as Cd, Pb, As and Hg, which are not needed for any biochemical function. Heavy metals are not biodegradable and accumulate in the environment. High concentrations of heavy metals above threshold limits pose high risks to the environment and human health. In addition to mining, other anthropogenic sources of heavy metals include smelting, electroplating, the use of pesticides and fertilizers in agriculture, industrial discharges, etc. If heavy metals were to enter the food chain through soil contamination, they could cause health problems such as lead poisoning, kidney disease. and brain damage. In recent decades there has been growing interest in the development of technologies for the remediation of contaminated soils. The main focus of the paper are chelators that provide key nutrients and protection against plant pathogens. However, the main effect of these microbes is that their biological activities in the soil influence the speciation and mobility of metal ions, and therefore influence the tolerance and uptake of metals by plants [Whiting et al. 2001]. Studies have shown that some microbes can increase metal uptake by plants [Robinsons et al. 2009]. For example, Chopra et al. (2007) demonstrated that soil microorganisms from an arsenic contamination site increased As uptake by Agrostis tenuis by 45%. The effectiveness of rhizoremediation depends largely on the plant's ability to promote microbial growth and colonize the root region. Plant roots may naturally release complex aromatic compounds such as flavonoids into the rhizosphere, which help stimulate the growth and activity of degrading bacteria.