Study on the Combined Behaviour of Montmorillonite and Carbonate Mineralizing Bacteria on Lead Retention and Fixation

Heavy metal pollution management is a global environmental problem that poses great threat to the ecological environment. Adsorption and biomineralization are considered be two most promising heavy remediation techniques among numerous available ones. In this work, combined removal system was constructed employing adsorption of montmorillonite mineralization carbonate mineralizing bacteria expand their application potential for controlling water pollution. Analysis changes in pH, CO32− concentration, Pb2+ concentration liquid phase, microscopic morphology, mineral functional group on sedimentary minerals done study retention fixation behaviour Pb2+. The results show phase pH may slightly altered by ions dissolved montmorillonite. Based conditions functioning separately, elimination reach 35.31% 45.75%, respectively. However, when with bacteria, which study, can buffer part rapidly reduce its biotoxicity. Subsequently, these buffered gradually desorbed removed effect mineralized deposition. Results from SEM, FTIR, XRD indicate primarily as rod-shaped PbCO3. It worth noting process able significantly increase up 90.06%. addition, presence montmorillonite’s desorption rate over 81%, greatly enhancing capacity reuse. Therefore, our research work contributes expanding treatment metal-polluted waters.