Werfelli Naima, Taboubi Mariem, Ridene Sirine, Bousselmi Hadir, Mansouri Ahlem, Landoulsi Ahmed, Abbes Chiraz
Biochemistry and Molecular Biology Laboratory, Risks Related to Environmental Stress, Struggle and Prevention (UR17ES20), Faculty of Sciences of Bizerte University of Carthage, Zarzouna Bizerte, Tunisia.
International Center for Environmental Technologies (CITET), Boulevard Leader Yasser Arafat, Tunis, Tunisia.
PLoS One. 2025 Aug 22;20(8):e0330872. doi: 10.1371/journal.pone.0330872. eCollection 2025.
Heavy metal contamination poses a significant risk to both the environment and public health, particularly through metallic mercury, a neurotoxic contaminant capable of bioaccumulating in food chains. This article presents a novel approach to remediating mercury-polluted soils by combining microbial bioremediation with the effects of a static magnetic field, applied at an induction of 260 mT for 12 hours at the start of the experiment. The decontamination technique was applied to mercury-contaminated soil bioaugmented with the bacterial strain Pseudomonas stutzeri LBR. Mercury remediation was enhanced by the static magnetic field in conjunction with bioaugmentation over a 30-day period. Notably, in non-sterile soils, the combination of an SMF, total soil flora, and Pseudomonas stutzeri LBR increased mercury remediation efficiency by 49.36%, compared to only 23.85% in the absence of an static magnetic field and soil bioaugmentation. Similarly, in sterile soils, the combination of an static magnetic field and Pseudomonas stutzeri LBR increased mercury remediation efficiency by 72.49%, compared to 38.1% without an static magnetic field and soil bioaugmentation. This study highlights the potential of combining an static magnetic field with microbial bioremediation to accelerate the remediation of mercury-contaminated soils, suggesting that this approach may become increasingly important in the future.
重金属污染对环境和公众健康都构成重大风险，尤其是通过金属汞，它是一种神经毒性污染物，能够在食物链中生物累积。本文提出了一种通过将微生物生物修复与静磁场效应相结合来修复汞污染土壤的新方法，在实验开始时以260 mT的感应强度施加静磁场12小时。该去污技术应用于用细菌菌株施氏假单胞菌LBR进行生物强化的汞污染土壤。在30天的时间里，静磁场与生物强化相结合提高了汞的修复效果。值得注意的是，在非无菌土壤中，静磁场、土壤总菌群和施氏假单胞菌LBR的组合使汞修复效率提高了49.36%，而在没有静磁场和土壤生物强化的情况下仅为23.85%。同样，在无菌土壤中，静磁场和施氏假单胞菌LBR的组合使汞修复效率提高了72.49%，而在没有静磁场和土壤生物强化的情况下为38.1%。这项研究突出了将静磁场与微生物生物修复相结合以加速汞污染土壤修复的潜力，表明这种方法在未来可能会变得越来越重要。
