Jingyi Dai, Chaoyang Li, Yu Sun, Yunlin Zhao, Huimin Huang, Yingzi Ma, Zhenggang Xu
Hunan Research Center of Engineering Technology for Utilization of Environmental and Resources Plant, Central South University of Forestry and Technology, Changsha, 410004, Hunan, China.
Central South Inventory and Planning Institute of National Forestry and Grassland Administration, Changsha, 410014, Hunan, China.
Arch Microbiol. 2023 Mar 24;205(4):139. doi: 10.1007/s00203-023-03484-1.
Heavy metal pollution is a global problem that affects both the environment and human health. Microorganisms play an important role in remediation. Most studies on the use of microorganisms for heavy metal remediation focus on single heavy metals. In this study, a strain of Penicillium amphipolaria, XK11 with high resistance to both antimony (Sb III) and cadmium (Cd II) was screened from the mineral slag. The strain also had a high phosphate solubilization capacity. The single-factor adsorption experiment results showed that the initial pH (pH), adsorption time (T), and initial solution concentration (C) all affected the adsorption of Sb and Cd by XK11. When the initial pH (Cd = 6, Sb = 4) and adsorption time (T = 7 d) were constant, XK11 achieved the maximum removal rate of Cd (45.6%) and Sb (34.6%). These results confirm that XK11 has potential as a biomaterial or remediation of Sb and Cd pollution.
重金属污染是一个影响环境和人类健康的全球性问题。微生物在修复过程中发挥着重要作用。大多数关于利用微生物进行重金属修复的研究都集中在单一重金属上。在本研究中，从矿渣中筛选出了一株对锑（Sb III）和镉（Cd II）均具有高抗性的两极性青霉菌株XK11。该菌株还具有较高的解磷能力。单因素吸附实验结果表明，初始pH值（pH）、吸附时间（T）和初始溶液浓度（C）均影响XK11对Sb和Cd的吸附。当初始pH值（Cd = 6，Sb = 4）和吸附时间（T = 7天）恒定时，XK11对Cd（45.6%）和Sb（34.6%）的去除率达到最大值。这些结果证实XK11作为一种生物材料在修复Sb和Cd污染方面具有潜力。
