Data

This dataset pertains to a study on the passivation of heavy metals in pig manure compost through the inoculation of three Bacillus species: Bacillus subtilis (BS), Bacillus licheniformis (BL), and Bacillus megaterium (BM). The research hypothesis posits that different Bacillus species have significant effects on the passivation of specific heavy metals in pig manure compost. The total content and different fraction contents of heavy metals (Cu, Zn, Pb, Cr and Ni) were determined. Additionally, parameters such as temperature, pH, total organic carbon, humic substance, humic acid, and fulvic acid were measured. The succession of the microbial community and changes in heavy metal resistance genes in pig manure compost were analyzed. The data demonstrated that the B. subtilis inoculation most effectively passivated Cu and Zn. The inoculation of B. subtilis and B. licheniformis both demonstrated the greatest impact on Pb passivation. B. megaterium demonstrated optimal efficacy for Cr passivation, whereas B. licheniformis showed the greatest influence on Ni passivation. This dataset provides new insights into heavy metal passivation in pig manure composting.

本数据集关联一项通过接种三种芽孢杆菌（Bacillus species）钝化猪粪堆肥中重金属的研究，受试菌株分别为枯草芽孢杆菌（Bacillus subtilis，BS）、地衣芽孢杆菌（Bacillus licheniformis，BL）与巨大芽孢杆菌（Bacillus megaterium，BM）。本研究提出假说：不同芽孢杆菌菌株对猪粪堆肥中特定重金属的钝化效果存在显著差异。研究测定了重金属（铜Cu、锌Zn、铅Pb、铬Cr及镍Ni）的总含量与不同赋存形态含量，同时检测了温度、pH值、总有机碳、腐殖质、腐殖酸与富里酸等参数。此外，本研究还分析了猪粪堆肥过程中微生物群落的演替规律，以及重金属抗性基因的变化情况。数据分析结果表明：接种枯草芽孢杆菌对铜、锌的钝化效果最为显著；接种枯草芽孢杆菌与地衣芽孢杆菌均对铅的钝化效果最佳；巨大芽孢杆菌对铬的钝化效果最优，而地衣芽孢杆菌对镍的钝化影响最大。本数据集为猪粪堆肥过程中的重金属钝化研究提供了全新的研究视角。