Bioremediation of coking contaminated soil: Mn(II)-oxidizing bacteria (MnOB) boost the degradation of high-molecular-weight polycyclic aromatic hydrocarbons (PAHs).

ABSTRACT:

Introduction

The Mn(II) oxidizing bacteria (MnOB) process plays an important role in persistent organic pollutant remediation, but its performance in high-molecular-weight polycyclic aromatic hydrocarbons (PAHs) degradation remains unclear.

Methods

In this study, the key role of MnOB under various nitrogen conditions in enhancing the degradation of high-molecular-weight PAHs in contaminated soil after KMnO₄ pre-oxidation was investigated.

Results and discussion

The results indicated that the combination of MnOB and potassium nitrate stimulation with a C/N ratio of 100:15 was effective in degrading high-molecular-weight PAHs. 80.59% of the total PAHs and 83.77% of benzo[a]pyrene (BaP) were degraded. MnOB can effectively utilize available Mn(II) to form bioge

SUBMITTER: Wang X 

PROVIDER: S-EPMC12679158 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature