Application of bacterial biofilm in remediation of polluted farmland soil:a review

Abstract:

Farmland soil pollution is becoming serious worldwide. As common soil pollutants, heavy metals, pesticides, and microplastics have posed a threat to farmland ecosystem and food security. Bacterial biofilm (BF), the multi-component aggregate on the surface of bacteria, has proved to have high value in environmental protection in recent years. This paper introduces the composition and functions of BF and summarizes the applications and mechanism of bacteria and BF in remediation of heavy metal- and organic-polluted soil in recent years. Moreover, the potential of BF for remediation of polluted soil is summarized. This study is expected to gain a clearer insight into the key role of BF and guide the exploration of potentials of BF in environmental protection.

Key words:bacterial biofilm;soil pollution;bioremediation;bacterial community structure