Adsorption characteristics of Penicillium amphipolaria XK11 to cadmium and antimony

Abstract

Abstract Heavy metal pollution is a worldwide problem that harms both the environment and human health. Wherein, microorganisms play important roles in remediation process. In this study, a strain XK11 with high resistance to both antimony Sb(III) and cadmium Cd(II) was screened from the mineral slag and was identified as Penicillium amphipolaria by molecular identification. The strain was resistant to heavy metals Cd and Sb, and had a high phosphate solubilization capacity. The results showed that the removal rate of XK11 to Cd and Sb solution could reached 45.6% and 34.6% respectively. When initial pH0 and adsorption time constant, XK11 could achieve the maximum removal rate of heavy metals Cd and Sb under different initial heavy metal concentration. The initial heavy metal concentration had a greater influence on biosorption than the initial pH0 and adsorption time. The findings demonstrated the potential of XK11 in the remediation of heavy metal Cd and Sb pollution, identifying potential materials and treatment strategies for heavy metal remediation.