Abstract：In the present work， potatoes was used as a slow-release carbon source to induce biomineralization and curing of heavy metal Cd2＋. Its practicality was determined in comparison with the classic carbon source sodium lactate， and the single-factor experiment was used to determine the optimal growth conditions and cadmium removal capacity of potatoes as slow-release carbon sources loaded with sulfate-reducing bacteria. The effects of potato and sodium lactate on cadmium-contaminated wastewater were compared under optimal conditions， and SEM and EDS analysis of mineralized products were conducted. The results show that potatoes as a carbon source was able to provide a more lasting and stable environment for the growth of sulfate-reducing bacteria and absorb certain heavy metal to realize maximize efficiency of cadmium fixation.
2021, Vol. 55 
