1
|
Wang Y, Sun S, Liu Q, Su Y, Zhang H, Zhu M, Tang F, Gu Y, Zhao C. Characteristic microbiome and synergistic mechanism by engineering agent MAB-1 to evaluate oil-contaminated soil biodegradation in different layer soil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:10802-10817. [PMID: 38212565 DOI: 10.1007/s11356-024-31891-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 01/03/2024] [Indexed: 01/13/2024]
Abstract
Bioremediation is a sustainable and pollution-free technology for crude oil-contaminated soil. However, most studies are limited to the remediation of shallow crude oil-contaminated soil, while ignoring the deeper soil. Here, a high-efficiency composite microbial agent MAB-1 was provided containing Bacillus (naphthalene and pyrene), Acinetobacter (cyclohexane), and Microbacterium (xylene) to be synergism degradation of crude oil components combined with other treatments. According to the crude oil degradation rate, the up-layer (63.64%), middle-layer (50.84%), and underlying-layer (54.21%) crude oil-contaminated soil are suitable for bioaugmentation (BA), biostimulation (BS), and biostimulation+bioventing (BS+BV), respectively. Combined with GC-MS and carbon number distribution analysis, under the optimal biotreatment, the degradation rates of 2-ring and 3-ring PAHs in layers soil were about 70% and 45%, respectively, and the medium and long-chain alkanes were reduced during the remediation. More importantly, the relative abundance of bacteria associated with crude oil degradation increased in each layer after the optimal treatment, such as Microbacterium (2.10-14%), Bacillus (2.56-12.1%), and Acinetobacter (0.95-12.15%) in the up-layer soil; Rhodococcus (1.5-6.9%) in the middle-layer soil; and Pseudomonas (3-5.4%) and Rhodococcus (1.3-13.2%) in the underlying-layer soil. Our evaluation results demonstrated that crude oil removal can be accelerated by adopting appropriate bioremediation approach for different depths of soil, providing a new perspective for the remediation of actual crude oil-contaminated sites.
Collapse
Affiliation(s)
- Yaru Wang
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, People's Republic of China
- State Key Laboratory of Petroleum Pollution Control, No.66 Changjiang West Road, Huangdao District, Qingdao, 266580, People's Republic of China
| | - Shuo Sun
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, People's Republic of China
- State Key Laboratory of Petroleum Pollution Control, No.66 Changjiang West Road, Huangdao District, Qingdao, 266580, People's Republic of China
| | - Qiyou Liu
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, People's Republic of China.
- State Key Laboratory of Petroleum Pollution Control, No.66 Changjiang West Road, Huangdao District, Qingdao, 266580, People's Republic of China.
| | - Yuhua Su
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, People's Republic of China
- State Key Laboratory of Petroleum Pollution Control, No.66 Changjiang West Road, Huangdao District, Qingdao, 266580, People's Republic of China
| | - Hang Zhang
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, People's Republic of China
- State Key Laboratory of Petroleum Pollution Control, No.66 Changjiang West Road, Huangdao District, Qingdao, 266580, People's Republic of China
| | - Mingjun Zhu
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, People's Republic of China
- State Key Laboratory of Petroleum Pollution Control, No.66 Changjiang West Road, Huangdao District, Qingdao, 266580, People's Republic of China
| | - Fang Tang
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, People's Republic of China
- State Key Laboratory of Petroleum Pollution Control, No.66 Changjiang West Road, Huangdao District, Qingdao, 266580, People's Republic of China
| | - Yingying Gu
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, People's Republic of China
- State Key Laboratory of Petroleum Pollution Control, No.66 Changjiang West Road, Huangdao District, Qingdao, 266580, People's Republic of China
| | - Chaocheng Zhao
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, People's Republic of China
- State Key Laboratory of Petroleum Pollution Control, No.66 Changjiang West Road, Huangdao District, Qingdao, 266580, People's Republic of China
| |
Collapse
|