Phosphate solubilizing bacteria (PSB) that can withstand high cadmium (Cd) stress is a desired combination for bioremediation. This study evaluated the Cd bioremediation potential of four PSB strains isolated from the contaminated soils of a municipal solid waste (MSW) discarding site (Guwahati, India). PSB strains were cultured in Pikovskaya (PVK) media, which led to higher acid phosphatase (ACP) activity and the release of organic acid. Optical density (OD) measurements were performed to determine the growth pattern of PSB; furthermore, Cd uptake by PSB was evaluated using infrared spectroscopy (IR) and X-Ray Diffraction (XRD) analyses. The 16S rRNA taxonomic analysis revealed that all the four promising PSB strains belonged to either Bacillus sp. or Enterobacter sp. One strain (SM_SS8) demonstrated higher tolerance towards Cd (up to 100 mg L⁻¹). Flow cytometry analysis revealed 70.92%, 46.93% and 20.4% viability of SM_SS8 in 10, 50 and 100 mg L⁻¹, respectively in PVK media containing Cd. This study has therefore substantiated the bioremediation of Cd from polluted soil by the PSB isolates. Thus, experimental results revealed a potential combo benefit, phosphate solubilization along with Cd remediation.

可以承受高镉 (Cd) 压力的磷酸盐增溶细菌 (PSB) 是生物修复的理想组合。本研究评估了从城市固体废物 (MSW) 丢弃场所（印度古瓦哈提）的受污染土壤中分离的四种 PSB 菌株的 Cd 生物修复潜力。PSB 菌株在 Pikovskaya (PVK) 培养基中培养，这导致更高的酸性磷酸酶 (ACP) 活性和有机酸的释放。进行光密度 (OD) 测量以确定 PSB 的生长模式；此外，使用红外光谱 (IR) 和 X 射线衍射 (XRD) 分析评估 PSB 对 Cd 的吸收。16S rRNA 分类学分析显示，所有四种有前景的 PSB 菌株都属于芽孢杆菌属。或肠杆菌sp. 一种菌株 (SM_SS8) 表现出对 Cd 的更高耐受性（高达 100 mg L ^-1）。流式细胞术分析显示，在含有 Cd 的 PVK 培养基中，SM_SS8 在 10、50 和 100 mg L ^{-1 中的}存活率分别为 70.92%、46.93% 和 20.4% 。因此，这项研究证实了 PSB 分离株对污染土壤中 Cd 的生物修复。因此，实验结果揭示了潜在的组合益处，磷酸盐溶解和镉修复。