Method for promoting degradation of polychlorinated biphenyls (PCBs) by pseudomonas JD37 with nanoscale zero-valent iron (nZVI) and use thereof

A method for promoting degradation of polychlorinated biphenyls (PCBs) by Pseudomonas JD37 with nanoscale zero-valent iron (nZVI), comprising the following steps:

• adding the nZVI having a size of 20 nm to 100 nm and the Pseudomonas JD37 in an environment having PCBs, wherein
• in comparison to adding the nZVI having a size outside the range of 20 nm to 100 nm and not adding of the nZVI, adding the nZVI having the size of 20 nm to 100 nm increases a yield of extracellular reactive oxygen species (ROS) of the Pseudomonas JD37, and shortens a degradation half-life of the Pseudomonas JD37 in the degradation of PCBs, so as to degrade the PCBs;
• and
• wherein the environment is water, and the nZVI is added in an amount of 10 mg/L to 100 mg/L;
• and
• the Pseudomonas JD37 is Pseudomonas JD37 in middle and late stages of a logarithmic growth phase, and the Pseudomonas JD37 has an OD600 value of 0.1 to 0.3 after being added to the environment.