1
|
Ge H, Peng Z, Lu D, Yang Z, Li H. Biodegradation of high molecular weight polycyclic aromatic hydrocarbons by Sarocladium terricola strain PYR-233 isolated from petrochemical contaminated sediment. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 363:121419. [PMID: 38852405 DOI: 10.1016/j.jenvman.2024.121419] [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: 10/27/2023] [Revised: 04/03/2024] [Accepted: 06/06/2024] [Indexed: 06/11/2024]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) were frequently found in sediment and were primarily treated through microbial degradation. Thus, efficient management of PAH pollution requires exploring the molecular degradation mechanisms of PAHs and expanding the pool of available microbial resources. A fungus (identified as Sarocladium terricola strain RCEF778) with the remarkable ability to degrade pyrene was screened from sediment near a petrochemical plant, and its growth and pyrene degradation characteristics were comprehensively investigated. The results showed that the fungus exhibited great effectiveness in pyrene degradation, with a degradation ratio of 88.97% at 21 days at the conditions: 35 °C, pH 7, 10 mg L-1 initially pyrene concentration, 3% supplementary salt, and glucose supplementation. The generation and concentration variation of the intermediate products were identified, and the results revealed that the fungus degraded pyrene through two pathways: by salicylic acid and by phthalic acid. Three sediments (M1, M2, M3), each exhibiting different levels of PAH pollution, were employed to examine the effectiveness of fungal degradation of PAHs in practical sediment samples. These data showed that with the fungus, the degradation ratios ranged from 13.64% to 23.50% for 2-3 rings PAHs, 40.93%-49.41% for 4 rings PAHs, and 39.59%-48.07% for 5-6 rings PAHs, which were significantly higher than those for the sediment without the fungus and confirmed the excellent performance of the fungal. Moreover, the Gompertz model was employed to analyze the degradation kinetics of 4-rings and 5-6 rings PAHs in these sediments, and the results demonstrated that the addition of the fungus could significantly increase the maximum degradation ratio, degradation start-up rate and maximum degradation rate of 4-rings and 5-6 rings PAHs and shorten the time required to reach the maximum degradation rate. This study not only supplied fungal materials but also established crucial theoretical foundations for the development of bioremediation technologies aimed at high molecular weight PAH-contaminated sediments.
Collapse
Affiliation(s)
- Huanying Ge
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, PR China; Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Changsha, 410083, PR China.
| | - Zhaoxia Peng
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, PR China; Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Changsha, 410083, PR China
| | - Denglong Lu
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, PR China; Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Changsha, 410083, PR China
| | - Zhaoguang Yang
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, PR China; Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Changsha, 410083, PR China
| | - Haipu Li
- Center for Environment and Water Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, PR China; Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Changsha, 410083, PR China.
| |
Collapse
|
2
|
Shang X, Wu S, Liu Y, Zhang K, Guo M, Zhou Y, Zhu J, Li X, Miao R. Rice husk and its derived biochar assist phytoremediation of heavy metals and PAHs co-contaminated soils but differently affect bacterial community. JOURNAL OF HAZARDOUS MATERIALS 2024; 466:133684. [PMID: 38310844 DOI: 10.1016/j.jhazmat.2024.133684] [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: 11/25/2023] [Revised: 01/08/2024] [Accepted: 01/30/2024] [Indexed: 02/06/2024]
Abstract
In order to evaluate the feasibility of rice husk and rice husk biochar on assisting phytoremediation of polycyclic aromatic hydrocarbons (PAHs) and heavy metals (HMs) co-contaminated soils, a 150-day pot experiment planted with alfalfa was designed. Rice husk and its derived biochar were applied to remediate a PAHs, Zn, and Cr co-contaminated soil. The effects of rice husk and biochar on the removal and bioavailability of PAHs and HMs, PAH-ring hydroxylating dioxygenase gene abundance and bacterial community structure in rhizosphere soils were investigated. Results suggested that rice husk biochar had better performance on the removal of PAHs and immobilization of HMs than those of rice husk in co-contaminated rhizosphere soil. The abundance of PAH-degraders, which increased with the culture time, was positively correlated with PAHs removal. Rice husk biochar decreased the richness and diversity of bacterial community, enhanced the growth of Steroidobacter, Bacillus, and Sphingomonas in rhizosphere soils. However, Steroidobacter, Dongia and Acidibacter were stimulated in rice husk amended soils. According to the correlation analysis, Steroidobacter and Mycobacterium may play an important role in PAHs removal and HMs absorption. The combination of rice husk biochar and alfalfa would be a promising method to remediate PAHs and HMs co-contaminated soil.
Collapse
Affiliation(s)
- Xingtian Shang
- Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, China
| | - Sirui Wu
- Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, China
| | - Yuli Liu
- Henan Dabieshan National Observation and Research Field Station of Forest Ecosystem, International Joint Research Laboratory for Global Change Ecology, School of Life Sciences, Henan University, Kaifeng 475004, China
| | - Keke Zhang
- Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, China
| | - Meixia Guo
- Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, China.
| | - Yanmei Zhou
- Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, China
| | - Jiangwei Zhu
- Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China
| | - Xuhui Li
- Henan Dabieshan National Observation and Research Field Station of Forest Ecosystem, Henan Engineering Research Centre for Control & Remediation of Soil Heavy Metal Pollution, Henan University, Kaifeng 475004 China.
| | - Renhui Miao
- Henan Dabieshan National Observation and Research Field Station of Forest Ecosystem, International Joint Research Laboratory for Global Change Ecology, School of Life Sciences, Henan University, Kaifeng 475004, China
| |
Collapse
|
3
|
Su Q, Yu J, Fang K, Dong P, Li Z, Zhang W, Liu M, Xiang L, Cai J. Microbial Removal of Petroleum Hydrocarbons from Contaminated Soil under Arsenic Stress. TOXICS 2023; 11:toxics11020143. [PMID: 36851017 PMCID: PMC9962243 DOI: 10.3390/toxics11020143] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 01/20/2023] [Accepted: 01/30/2023] [Indexed: 06/12/2023]
Abstract
The contamination of soils with petroleum and its derivatives is a longstanding, widespread, and worsening environmental issue. However, efforts to remediate petroleum hydrocarbon-polluted soils often neglect or overlook the interference of heavy metals that often co-contaminate these soils and occur in petroleum itself. Here, we identified Acinetobacter baumannii strain JYZ-03 according to its Gram staining, oxidase reaction, biochemical tests, and FAME and 16S rDNA gene sequence analyses and determined that it has the ability to degrade petroleum hydrocarbons. It was isolated from soil contaminated by both heavy metals and petroleum hydrocarbons. Strain JYZ-03 utilized diesel oil, long-chain n-alkanes, branched alkanes, and polycyclic aromatic hydrocarbons (PAHs) as its sole carbon sources. It degraded 93.29% of the diesel oil burden in 7 days. It also had a high tolerance to heavy metal stress caused by arsenic (As). Its petroleum hydrocarbon degradation efficiency remained constant over the 0-300 mg/L As(V) range. Its optimal growth conditions were pH 7.0 and 25-30 °C, respectively, and its growth was not inhibited even by 3.0% (w/v) NaCl. Strain JYZ-03 effectively bioremediates petroleum hydrocarbon-contaminated soil in the presence of As stress. Therefore, strain JYZ-03 may be of high value in petroleum- and heavy-metal-contaminated site bioremediation.
Collapse
Affiliation(s)
- Qu Su
- Hubei Provincial Academy of Eco-EnvironmentSal Science, Wuhan 430070, China
- State Environmental Protection Key Laboratory of Soil Health and Green Remediation, Wuhan 430070, China
| | - Jiang Yu
- Hubei Provincial Academy of Eco-EnvironmentSal Science, Wuhan 430070, China
- State Environmental Protection Key Laboratory of Soil Health and Green Remediation, Wuhan 430070, China
- Institute of Advanced Studies, China University of Geosciences, Wuhan 430079, China
| | - Kaiqin Fang
- State Environmental Protection Key Laboratory of Soil Health and Green Remediation, Wuhan 430070, China
- Huazhong Agricultural University, Wuhan 430070, China
| | - Panyue Dong
- Hubei Provincial Academy of Eco-EnvironmentSal Science, Wuhan 430070, China
- State Environmental Protection Key Laboratory of Soil Health and Green Remediation, Wuhan 430070, China
| | - Zheyong Li
- Hubei Provincial Academy of Eco-EnvironmentSal Science, Wuhan 430070, China
- State Environmental Protection Key Laboratory of Soil Health and Green Remediation, Wuhan 430070, China
| | - Wuzhu Zhang
- State Environmental Protection Key Laboratory of Soil Health and Green Remediation, Wuhan 430070, China
- Huazhong Agricultural University, Wuhan 430070, China
| | - Manxia Liu
- Hubei Provincial Academy of Eco-EnvironmentSal Science, Wuhan 430070, China
- State Environmental Protection Key Laboratory of Soil Health and Green Remediation, Wuhan 430070, China
| | - Luojing Xiang
- Hubei Provincial Academy of Eco-EnvironmentSal Science, Wuhan 430070, China
- State Environmental Protection Key Laboratory of Soil Health and Green Remediation, Wuhan 430070, China
| | - Junxiong Cai
- Hubei Provincial Academy of Eco-EnvironmentSal Science, Wuhan 430070, China
- State Environmental Protection Key Laboratory of Soil Health and Green Remediation, Wuhan 430070, China
| |
Collapse
|
4
|
Ali M, Song X, Wang Q, Zhang Z, Che J, Chen X, Tang Z, Liu X. Mechanisms of biostimulant-enhanced biodegradation of PAHs and BTEX mixed contaminants in soil by native microbial consortium. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 318:120831. [PMID: 36509345 DOI: 10.1016/j.envpol.2022.120831] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 11/29/2022] [Accepted: 12/04/2022] [Indexed: 06/17/2023]
Abstract
Despite the co-occurrence of polycyclic aromatic hydrocarbons (PAHs) and benzene, toluene, ethylbenzene, and xylene (BTEX) in the field, to date, knowledge on the bioremediation of benzene and benzo[a]pyrene (BaP) mixed contaminants is limited. In this study, the mechanisms underlying the biodegradation of benzene and BaP under individual and co-contaminated conditions followed by the enhanced biodegradation using methanol, ethanol, and vegetable oil as biostimulants were investigated. The results demonstrated that the benzene biodegradation was highly reduced under the co-contaminated condition compared to the individual benzene contamination, whereas the BaP biodegradation was slightly enhanced with the co-contamination of benzene. Moreover, biostimulation significantly improved the biodegradation of both contaminants under co-contaminated conditions. A trend of significant reduction in the bioavailable BaP contents was observed in all biostimulant-enhanced groups, implying that the bioavailable BaP was the preferred biodegradable BaP fraction. Furthermore, the enzymatic activity analysis revealed a significant increase in lipase and dehydrogenase (DHA) activities, as well as a reduction in the catalase and polyphenol oxidase, suggesting that the increased hydrolysis of fats and proton transfer, as well as the reduced oxidative stress, contributed to the enhanced benzene and BaP biodegradation in the vegetable oil treatment. In addition, the microbial composition analysis results demonstrated that the enriched functional genera contributed to the increased biodegradation efficiency, and the functional genera in the microbial consortium responded differently to different biostimulants, and competitive growth was observed in the biostimulant-enhanced treatments. In addition, the enrichment of Pseudomonas and Rhodococcus species was noticed during the biostimulation of benzene and BaP co-contamination soil, and was positively correlated with the DHA enzyme activities, indicating that these species encode DHA genes which contributed to the higher biodegradation. In conclusion, multiple lines of evidence were provided to shed light on the mechanisms of biostimulant-enhanced biodegradation of PAHs and BTEX co-contamination with native microbial consortiums.
Collapse
Affiliation(s)
- Mukhtiar Ali
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xin Song
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Qing Wang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Zhuanxia Zhang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jilu Che
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Xing Chen
- China Construction 8th Engineering Division Corp., LTD, Shanghai, 200122, China
| | - Zhiwen Tang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xin Liu
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| |
Collapse
|
5
|
Mo J, Feng J, He W, Liu Y, Cao N, Tang Y, Gu S. Effects of polycyclic aromatic hydrocarbons fluoranthene on the soil aggregate stability and the possible underlying mechanism. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:10245-10255. [PMID: 36071360 DOI: 10.1007/s11356-022-22855-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Accepted: 08/30/2022] [Indexed: 06/15/2023]
Abstract
Soil contamination by polycyclic aromatic hydrocarbons (PAHs) is an increasing problem in many countries, impacting the ecological environment's sustainable development. This study investigated the effects of fluoranthene (Fla) on soil aggregate stability. A possible mechanism for the interaction of Fla with soil aggregates was proposed by characterizing the aggregate structure. The results showed that Fla significantly improved the aggregate stability in the concentration range of 0-30.0 mg/kg. The content of macro-aggregates reached the maximum value at 10 mg/kg of Fla, which increased by 24.25% compared with the control group, while the content of large-aggregates decreased by 12.11%. Meanwhile, the mean weight diameter (MWD) and geometric mean diameter (GMD) increased by 56.63% and 37.66%, respectively. However, the macro-aggregates zeta potential value and specific surface area (SSA) decreased by 12.68% and 13.61%, respectively. The cracks of macro-aggregates were also significantly reduced. In addition, Fla-based free radicals were detected on the macro-aggregates. The absorption peak of the C-O group significantly increased, indicating that Fla may be covalently bound to the aggregates by aromatic ether bonds, which is a possible mechanism for the interaction between Fla and aggregates. This study provides theoretical support for revealing the effects of PAHs on soil.
Collapse
Affiliation(s)
- Jixian Mo
- College of Resources and Environment, Northeast Agricultural University, 600 Changjiang Rd., Harbin, 150030, Heilongjiang Province, People's Republic of China
- College of Life Science and Agriculture and Forestry, Qiqihar University, 42 Wenhua St., Qiqihar, 161006, Heilongjiang Province, People's Republic of China
- Heilongjiang Provincial Technology Innovation Center of Agromicrobial Preparation Industrialization, Qiqihar, 161006, Heilongjiang Province, People's Republic of China
| | - Jingyi Feng
- College of Resources and Environment, Northeast Agricultural University, 600 Changjiang Rd., Harbin, 150030, Heilongjiang Province, People's Republic of China
| | - Wanying He
- College of Resources and Environment, Northeast Agricultural University, 600 Changjiang Rd., Harbin, 150030, Heilongjiang Province, People's Republic of China
| | - Yuze Liu
- College of Resources and Environment, Northeast Agricultural University, 600 Changjiang Rd., Harbin, 150030, Heilongjiang Province, People's Republic of China
| | - Ning Cao
- College of Resources and Environment, Northeast Agricultural University, 600 Changjiang Rd., Harbin, 150030, Heilongjiang Province, People's Republic of China
| | - Yu Tang
- College of Resources and Environment, Northeast Agricultural University, 600 Changjiang Rd., Harbin, 150030, Heilongjiang Province, People's Republic of China
| | - Siyu Gu
- College of Resources and Environment, Northeast Agricultural University, 600 Changjiang Rd., Harbin, 150030, Heilongjiang Province, People's Republic of China.
| |
Collapse
|
6
|
Zhang X, Wang X, Li Y, Ning G, Zhang Q, Zhang X, Zheng W, Yang Z. Differences in adsorption, transmembrane transport and degradation of pyrene and benzo[a]pyrene by Bacillus sp. strain M1. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 248:114328. [PMID: 36436257 DOI: 10.1016/j.ecoenv.2022.114328] [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: 06/11/2022] [Revised: 11/02/2022] [Accepted: 11/21/2022] [Indexed: 06/16/2023]
Abstract
In a previous study our group identified Bacillus sp. strain M1 as an efficient decomposer of high molecular weight-polycyclic aromatic hydrocarbons (HMW-PAHs). Interestingly, its removal efficiency for benzo[a]pyrene (BaP) was nearly double that of pyrene (Pyr), which was the reverse of what is reported for most other species. Here we compared the differential steps of biosorption, transmembrane transport and biodegradation of Pyr and BaP by strain M1 in order to assist in targeted selection of dominant strains and their degradation efficiency in the remediation of these two HMW-PAHs. The overall biosorption efficiency for BaP was 19% higher than that for Pyr, and the time needed to reach BaP peak adsorption efficiency was 4 days shorter than for Pyr. Transmembrane transport of the PAHs was compared in presence of sodium azide which inhibits ATP synthesis and metabolism. This indicated that both Pyr and BaP entered the cells by the same means of passive transport. Biodegradation of Pyr and BaP did not differ in the early stage of culture, but around days 5-7, the biodegradation efficiency of BaP was significantly (30-61%) higher than that of Pyr. Key enzymes involved in these processes were identified and their activity differed, with intracellular gentisate 1,2-dioxygenase and extracellular polyphenol oxidase as likely candidates to be involved in BaP degradation, while intracellular catechol-1,2- dioxygenase and salicylate hydroxylase are more likely involved in Pyr degradation. These results provide new insights for sustainable environmental remediation of pyrene and benzo(a)pyrene by these bacteria.
Collapse
Affiliation(s)
- Xiaoxue Zhang
- College of Resource and Environmental Sciences, Agricultural University of Hebei, Baoding 0710001, Hebei Province, PR China; Key Laboratory for Farmland Eco-Environment, Baoding 0710001, Hebei Province, PR China
| | - Xiaomin Wang
- College of Resource and Environmental Sciences, Agricultural University of Hebei, Baoding 0710001, Hebei Province, PR China; Key Laboratory for Farmland Eco-Environment, Baoding 0710001, Hebei Province, PR China
| | - Yan Li
- College of Resource and Environmental Sciences, Agricultural University of Hebei, Baoding 0710001, Hebei Province, PR China; Key Laboratory for Farmland Eco-Environment, Baoding 0710001, Hebei Province, PR China
| | - Guohui Ning
- College of Resource and Environmental Sciences, Agricultural University of Hebei, Baoding 0710001, Hebei Province, PR China; Key Laboratory for Farmland Eco-Environment, Baoding 0710001, Hebei Province, PR China
| | - Qian Zhang
- College of Resource and Environmental Sciences, Agricultural University of Hebei, Baoding 0710001, Hebei Province, PR China; Key Laboratory for Farmland Eco-Environment, Baoding 0710001, Hebei Province, PR China
| | - Xuena Zhang
- College of Resource and Environmental Sciences, Agricultural University of Hebei, Baoding 0710001, Hebei Province, PR China; Key Laboratory for Farmland Eco-Environment, Baoding 0710001, Hebei Province, PR China
| | - Wei Zheng
- College of Resource and Environmental Sciences, Agricultural University of Hebei, Baoding 0710001, Hebei Province, PR China; Key Laboratory for Farmland Eco-Environment, Baoding 0710001, Hebei Province, PR China; State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding 071001, Hebei, PR China
| | - Zhixin Yang
- College of Resource and Environmental Sciences, Agricultural University of Hebei, Baoding 0710001, Hebei Province, PR China; Key Laboratory for Farmland Eco-Environment, Baoding 0710001, Hebei Province, PR China; State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding 071001, Hebei, PR China.
| |
Collapse
|
7
|
Biochar Effect on the Benzo[a]pyrene Degradation Rate in the Cu Co-Contaminated Haplic Chernozem under Model Vegetation Experiment Conditions. Processes (Basel) 2022. [DOI: 10.3390/pr10061147] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The research of the fundamentals of the behavior of behavior in the soil–plant system during their co-contamination is of high interest because of the absence of technologies for the creation of effective, environmentally friendly and cost-effective remediation methods, as well as integrated systems for predicting the quality of soils co-contaminated with HMs and PAHs. The unique model vegetation experiment was studied with Haplic Chernozem contaminated by one of the priority organic toxicants, benzo[a]pyrene (BaP), applied alone and co-contaminated with Cu with the subsequent vegetation of tomato (Solanum lycopersicum) and spring barley plants (Hordeum sativum Distichum). Biochar obtained from sunflower husks was used as a sorbent for the remediation of the contaminated soil. It was established that by increasing the BaP amount applied to the soil, the rate of BaP degradation improved. The effect was enhanced in the presence of biochar and decreased in the case of joint co-contamination with Cu, which is especially expressed for the soil of tomato plants. The half-degradation time of the BaP molecule varied from 8 up to 0.2 years for tomatoes and barley.
Collapse
|
8
|
An Advanced PMF Model Based on Degradation Process for Pollutant Apportionment in Coastal Areas. WATER 2022. [DOI: 10.3390/w14111823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
With increasing stress posed to the marine ecosystem and coastal communities, prevention and control of coastal pollution becomes urgent and important, in which the identification of pollution sources is essential. Currently, the pollutant source apportionment in coastal areas is mainly based on receptor models, such as the positive matrix factorization (PMF) model. Nevertheless, these models still lack consideration of the changes of pollutant behaviors (e.g., the degradation of pollutants) which cause the differences in pollutant compositions. Subsequently, the source apportionment via receptor models only based on the monitoring data may not be consistent with the one in pollution sources. To fill this gap, a pollutant degradation model was firstly developed in this study. Accordingly, the degradation model was inversed to estimate the pollutant concentrations at their emitting sources, based on the monitoring concentration in the coastal area. Finally, the estimated concentrations were fed to the PMF model for pollutant source apportionment, advancing the PMF model with degradation process. To demonstrate the feasibility and accuracy of the developed model, a case study of source appointment was carried out based on the polycyclic aromatic hydrocarbons (PAHs) in the sediments of the Pearl River Estuary. The results indicated the same types of emission source identified by the original and advanced PMF models, which were oil spill, biomass and coal combustion, and traffic emission. Nevertheless, the contributions of sources were significantly varied between the two models. According to the analyses based on emission inventory, the offsets of the results from the original PMF model were −55.4%, 22.7%, and 42.2% for the emission sources of oil spill, biomass and coal combustion, and traffic emission, respectively. Comparatively, the offsets for the advanced PMF model narrowed down to −27.5%, 18.4%, and −4.4%. Therefore, the advanced PMF model is able to provide satisfactory source apportionment for organic pollutants in coastal areas, and thus further provide a scientific basis for marine pollution prevention and control.
Collapse
|
9
|
Yi M, Zhang L, Li Y, Qian Y. Structural, metabolic, and functional characteristics of soil microbial communities in response to benzo[a]pyrene stress. JOURNAL OF HAZARDOUS MATERIALS 2022; 431:128632. [PMID: 35278957 DOI: 10.1016/j.jhazmat.2022.128632] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 03/02/2022] [Accepted: 03/02/2022] [Indexed: 05/11/2023]
Abstract
Understanding the characteristics of soil microbes responding to benzo[a]pyrene (BaP) helps to deepen the knowledge of the risks of BaP to soil ecosystem. In this study, the structural, metabolic, and functional responses of soil microbial communities to BaP (8.11 mg kg-1) were investigated. Analysis of microbial community structure based on 16 S rRNA and ITS gene sequencing indicated that BaP addition enriched microbes associated with aromatic compound degradation (Sphingomonas, Bacilli, Fusarium) and oligotrophs (Blastocatellaceae, Rokubacteriales), but inhibited Cyanobacteria involved in nitrogen-fixing process. Network analysis showed that the bacterial community enhanced intraspecific cooperation, while fungal community mainly altered the keystone taxa under BaP stress. Biolog EcoPlate assay demonstrated that microbial metabolism of carbon sources, especially nitrogen-containing sources, was stimulated by BaP addition. Functional analysis based on enzyme activity tests, functional gene quantification, and function annotation showed that nitrogen-cycling processes, especially nitrogen fixation, were significantly inhibited. These results suggest that BaP-tolerant microbes may establish cooperative relationships and compete for resources and ecological niches with sensitive microbes, especially those associated with nitrogen cycling, ultimately leading to enhanced carbon source utilization and restricted nitrogen cycling. This study clearly elucidates the adaptation strategies and functional shifts of soil microbial communities to BaP contamination.
Collapse
Affiliation(s)
- Meiling Yi
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; Key Laboratory of Three Gorges Reservoir Region's Eco-environment, Ministry of Education, Chongqing University, Chongqing 400045, China
| | - Lilan Zhang
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; Key Laboratory of Three Gorges Reservoir Region's Eco-environment, Ministry of Education, Chongqing University, Chongqing 400045, China.
| | - Yang Li
- School of Environment, Beijing Normal University, Beijing 100875, China
| | - Yao Qian
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; Key Laboratory of Three Gorges Reservoir Region's Eco-environment, Ministry of Education, Chongqing University, Chongqing 400045, China
| |
Collapse
|
10
|
Zhang G, Zhao Z, Yin XA, Zhu Y. Impacts of biochars on bacterial community shifts and biodegradation of antibiotics in an agricultural soil during short-term incubation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 771:144751. [PMID: 33545472 DOI: 10.1016/j.scitotenv.2020.144751] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 12/21/2020] [Accepted: 12/23/2020] [Indexed: 06/12/2023]
Abstract
This study investigated the effects of applying different biochars to soil on shifts in the bacterial community, the biodegradation of antibiotics, and their relationships. In total, nine biochars were applied to agricultural soil contaminated with 16 antibiotics. Clustering analysis showed that the responses of bacteria at the genus level to biochars were highly dependent on the biochar feedstock rather than the pyrolysis temperature. Among the antibiotics tested in the study, the biodegradation percentage was lower for tetracyclines (TCs, 6-14%) than sulfonamides (SAs, 8-26%) and quinolones (QLs, 8-24%). For specific individual antibiotics from the same class with similar structures, the high adsorption affinity of soil particles for antibiotics due to hydrophobic interactions (logKow) and electrostatic interactions (pKa) resulted in low biodegradation percentages for antibiotics in the soil. The biodegradation of TCs was affected more by the biochar type (effect size: -10% to 42%) than those of QLs (-26% to 14%) and SAs (-24% to 22%). According to the relationships determined between the bacterial taxonomic composition and biodegradation of antibiotics, Steroidobacter from the phylum Proteobacteria has significant positive correlations with the biodegradation of all SAs (p < 0.01), thereby indicating that Steroidobacter had a high capacity for biodegrading SAs. Significant positive correlations were also detected (p < 0.05) between specific genera (Iamia, Parviterribacter, and Gaiella) from the phylum Actinobacteria and the biodegradation of SAs. No significant positive correlations were found between bacterial genera and the biodegradation percentages for QLs and TCs, possibly due to the specific microorganisms involved in these biodegradation processes. The results in this study provide insights into the biodegradation mechanisms of antibiotics in soil and they may facilitate the development of strategies for the bioremediation of antibiotic-contaminated soil.
Collapse
Affiliation(s)
- Guixiang Zhang
- College of Environment and Safety, Taiyuan University of Science and Technology, Taiyuan 030024, Shanxi Province, China
| | - Zhihua Zhao
- College of Environment and Safety, Taiyuan University of Science and Technology, Taiyuan 030024, Shanxi Province, China
| | - Xin-An Yin
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Yuen Zhu
- College of Environment and Resources, Shanxi University, Taiyuan 030006, Shanxi Province, China.
| |
Collapse
|
11
|
Portet-Koltalo F, Gardes T, Debret M, Copard Y, Marcotte S, Morin C, Laperdrix Q. Bioaccessibility of polycyclic aromatic compounds (PAHs, PCBs) and trace elements: Influencing factors and determination in a river sediment core. JOURNAL OF HAZARDOUS MATERIALS 2020; 384:121499. [PMID: 31685316 DOI: 10.1016/j.jhazmat.2019.121499] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 10/16/2019] [Accepted: 10/17/2019] [Indexed: 06/10/2023]
Abstract
Organic matter (OM), clays, sand or time are factors possibly influencing the bioaccessibility of polycyclic aromatic hydrocarbons (PAHs) and polychlorobiphenyls (PCBs) from sediments. An experimental design was performed to monitor and quantify this process. The bioaccessible fraction, linked to the rapidly-desorbing fraction (Frap) of contaminants, was assessed through a non-exhaustive extraction using a carboxymethyl-β-cyclodextrin polymer. OM content was the most influential factor as regards Frap. Clay percentage was a slightly influential factor for PAHs while the interaction sand × OM was a slightly influential factor for PCBs. Frap was also determined in a sediment core collected from Martot's Pond (France). The higher the PAH/PCB concentration in this sediment, the higher the bioaccessible fraction. The relationship between a lower bioaccessibility and a higher number of PAHs cycles or PCB chlorines was linear. OM content impacted on Frap only for PAHs. Sequential extractions of some trace elements were also performed to evaluate their mobility. Cu, Cr, Pb, Ni were the less bioaccessible. A great part of As, Cd and Zn was found in the most bioaccessible sediment fractions. The 40-65 cm section might be considered as the most negatively impacting on the aquatic fauna, due to Cd and Zn high bioaccessible concentrations.
Collapse
Affiliation(s)
- F Portet-Koltalo
- Normandie University, UNIROUEN, COBRA Laboratory UMR CNRS 6014, 55 rue Saint Germain, 27000 Evreux, France.
| | - T Gardes
- Normandie University, UNIROUEN, COBRA Laboratory UMR CNRS 6014, 55 rue Saint Germain, 27000 Evreux, France; Normandie University, UNIROUEN, M2C Laboratory UMR 6143, FR CNRS 3730 SCALE, Bâtiment Blondel, Place Emile Blondel, 76821 Mont Saint Aignan Cedex, France.
| | - M Debret
- Normandie University, UNIROUEN, M2C Laboratory UMR 6143, FR CNRS 3730 SCALE, Bâtiment Blondel, Place Emile Blondel, 76821 Mont Saint Aignan Cedex, France.
| | - Y Copard
- Normandie University, UNIROUEN, M2C Laboratory UMR 6143, FR CNRS 3730 SCALE, Bâtiment Blondel, Place Emile Blondel, 76821 Mont Saint Aignan Cedex, France.
| | - S Marcotte
- Normandie University, UNIROUEN, COBRA Laboratory UMR CNRS 6014, 55 rue Saint Germain, 27000 Evreux, France.
| | - C Morin
- Normandie University, UNIROUEN, COBRA Laboratory UMR CNRS 6014, 55 rue Saint Germain, 27000 Evreux, France.
| | - Q Laperdrix
- Normandie University, UNIROUEN, COBRA Laboratory UMR CNRS 6014, 55 rue Saint Germain, 27000 Evreux, France.
| |
Collapse
|
12
|
Janus A, Waterlot C, Douay F, Pelfrêne A. Ex situ evaluation of the effects of biochars on environmental and toxicological availabilities of metals and polycyclic aromatic hydrocarbons. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:1852-1869. [PMID: 31760614 DOI: 10.1007/s11356-019-06764-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 10/14/2019] [Indexed: 06/10/2023]
Abstract
The present study experimented five biochars, one made from wood (400 °C, 12 h) and four made from miscanthus cultivated on contaminated soils (temperature 400/600 °C, duration 45/90 min). They were used as amendments at a 2% application rate on soil, cultivated or not cultivated with ryegrass, contaminated with (i) metals (Cd, Pb, and Zn), (ii) eight polycyclic aromatic hydrocarbons (PAHs), and (iii) a mix of metals and PAHs. The objectives were (i) to compare the effectiveness of the five biochars on soil parameters and pollutant availability and (ii) to determine the influence of soil multicontamination and ryegrass cultivation on biochar effectiveness. The results showed that biochar application did not necessarily lead to lower pollutant extractability and metal bioaccessibility. However, differences were highlighted between the biochars. The miscanthus biochars produced at 600 °C (BM600) showed higher effectiveness at decreasing metal extractability than the miscanthus biochars produced at 400 °C (BM400) due to its better sorption characteristics. In addition, ryegrass cultivation did not impact pollutant availability but modified metal bioaccessibility, especially for the soil amended with the BM600 and the woody biochar. Moreover, the presence of PAHs also negatively impacted the metal bioaccessibility in the soil amended with the BM600, and, on the contrary, positively impacted it in the soil amended with the BM400. Complementary studies are therefore necessary to understand the mechanisms involved, particularly in a context where soils requiring remediation operations are often multicontaminated and vegetated.
Collapse
Affiliation(s)
- Adeline Janus
- Laboratoire Génie Civil et géoEnvironnement (LGCgE), Yncréa Hauts-de-France, 48 boulevard Vauban, BP 41290, 59014, Lille cedex, France.
| | - Christophe Waterlot
- Laboratoire Génie Civil et géoEnvironnement (LGCgE), Yncréa Hauts-de-France, 48 boulevard Vauban, BP 41290, 59014, Lille cedex, France
| | - Francis Douay
- Laboratoire Génie Civil et géoEnvironnement (LGCgE), Yncréa Hauts-de-France, 48 boulevard Vauban, BP 41290, 59014, Lille cedex, France
| | - Aurélie Pelfrêne
- Laboratoire Génie Civil et géoEnvironnement (LGCgE), Yncréa Hauts-de-France, 48 boulevard Vauban, BP 41290, 59014, Lille cedex, France
| |
Collapse
|
13
|
Krepsky N, Bispo MDGS, Fontana LF, da Silva FS, Torres JPM, Malm O, Silva CG, Crapez MAC. Effects of aeration on the suspended matter from a tropical and eutrophic estuary. J Environ Sci (China) 2019; 86:175-186. [PMID: 31787182 DOI: 10.1016/j.jes.2019.05.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Revised: 05/29/2019] [Accepted: 05/30/2019] [Indexed: 06/10/2023]
Abstract
A comprehensive understanding of the complex biogeochemical interactions between organic matter and persistent contaminants in the suspended matter is vital for eco-efficient estuary recovery. However, little is known regarding aeration effects in suspended particulate aggregates. Therefore, this study aimed to investigate the effects of aeration on the suspended matter from a Tropical and Eutrophic estuarine environment. Anoxic water with 60 g/L of suspended particulate matter (SPM) was collected from Guanabara Bay, Rio de Janeiro, Brazil, transferred to experimental boxes and aerated for 61 days. SPM aggregates monitoring included abiotic variables measurements and, determination of total organic matter (TOM), biopolymers composition, bacterial activity, trace metals, and polycyclic aromatic hydrocarbons (PAHs) concentrations. The aeration enhanced dissolved oxygen (DO) concentration and the redox potential (Eh). However, from days 0 to 61 the predominant bacterial activities were denitrification and fermentation. Electron transport system activity increased after day 10, and aerobic activity was detected after day 19. In summary, aeration increased aerobic bacterial activity, lipids (LIP) and trace metal concentrations, although diminished protein/carbohydrate ratio and PAH concentration. Trace metals concentration (Ni, Pb, Cu, Cr, Mn, and Fe) were the highest on day 19 when the pH was 5.9. Copper presented toxic values (Cu > 20.0 μg/g). The pH showed a strong negative correlation with Eh (r = -0.94; p < 0.001). Acidic environment (pH ≤ 5.9) in marine ecosystems with high loads of toxic trace metals is unsafe for biota. Therefore, managers must be aware of the environmental and biological risks of introducing the aeration technique into a eutrophic marine environment.
Collapse
Affiliation(s)
- Natascha Krepsky
- Laboratory of Marine Geology, Fluminense Federal University, Ave. Gen. Milton Tavares de Souza s/n°-Gragoatá, 24210-346 Niterói, RJ, Brazil; Radioisotopes Laboratory Eduardo Penna Franca, Biophysics Institute Carlos Chagas Filho, Federal University of Rio de Janeiro, Av. Carlos Chagas Filho, 373 CCS - Bl. G, 21941-902 Rio de Janeiro, RJ, Brazil; Marine Biology Department, Fluminense Federal University, R. Mario Santos Braga, s/n, Niterói, 24.020-141 Niterói, RJ, Brazil.
| | - Maria das Graças S Bispo
- Marine Biology Department, Fluminense Federal University, R. Mario Santos Braga, s/n, Niterói, 24.020-141 Niterói, RJ, Brazil
| | - Luiz F Fontana
- Laboratory of Marine Geology, Fluminense Federal University, Ave. Gen. Milton Tavares de Souza s/n°-Gragoatá, 24210-346 Niterói, RJ, Brazil; Marine Biology Department, Fluminense Federal University, R. Mario Santos Braga, s/n, Niterói, 24.020-141 Niterói, RJ, Brazil
| | - Frederico S da Silva
- Laboratory of Marine Geology, Fluminense Federal University, Ave. Gen. Milton Tavares de Souza s/n°-Gragoatá, 24210-346 Niterói, RJ, Brazil; Marine Biology Department, Fluminense Federal University, R. Mario Santos Braga, s/n, Niterói, 24.020-141 Niterói, RJ, Brazil
| | - João P M Torres
- Radioisotopes Laboratory Eduardo Penna Franca, Biophysics Institute Carlos Chagas Filho, Federal University of Rio de Janeiro, Av. Carlos Chagas Filho, 373 CCS - Bl. G, 21941-902 Rio de Janeiro, RJ, Brazil
| | - Olaf Malm
- Radioisotopes Laboratory Eduardo Penna Franca, Biophysics Institute Carlos Chagas Filho, Federal University of Rio de Janeiro, Av. Carlos Chagas Filho, 373 CCS - Bl. G, 21941-902 Rio de Janeiro, RJ, Brazil
| | - Cleverson G Silva
- Laboratory of Marine Geology, Fluminense Federal University, Ave. Gen. Milton Tavares de Souza s/n°-Gragoatá, 24210-346 Niterói, RJ, Brazil
| | - Mirian A C Crapez
- Marine Biology Department, Fluminense Federal University, R. Mario Santos Braga, s/n, Niterói, 24.020-141 Niterói, RJ, Brazil
| |
Collapse
|
14
|
Liu XX, Hu X, Cao Y, Pang WJ, Huang JY, Guo P, Huang L. Biodegradation of Phenanthrene and Heavy Metal Removal by Acid-Tolerant Burkholderia fungorum FM-2. Front Microbiol 2019; 10:408. [PMID: 30930861 PMCID: PMC6427951 DOI: 10.3389/fmicb.2019.00408] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 02/18/2019] [Indexed: 11/13/2022] Open
Abstract
Phenanthrene (PHE) is a common pollutant of acidic and non-acidic environments that is recalcitrant to biodegradation. Herein, Burkholderia fungorum FM-2 (GenBank accession no. KM263605) was isolated from oil-contaminated soil in Xinjiang and characterized morphologically, physiologically, and phylogenetically. Environmental parameters including PHE concentration, pH, temperature, and salinity were optimized, and heavy metal tolerance was investigated. The MIC of strain FM-2 tolerant to Pb(II) and Cd(II) was 50 and 400 mg L−1, respectively, while the MIC of Zn(II) was >1,200 mg L−1. Atypically for a B. fungorum strain, FM-2 utilized PHE (300 mg L−1) as a sole carbon source over a wide pH range (between pH 3 and 9). PHE and heavy metal metabolism were assessed using gas chromatography (GC), inductively coupled plasma optical emission spectroscopy (ICP-OES), scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS), Fourier-transform infrared (FTIR) spectroscopy and ultraviolet (UV) absorption spectrometry. The effects of heavy metals on the bioremediation of PHE in soil were investigated, and the findings suggest that FM-2 has potential for combined bioremediation of soils co-contaminated with PHE and heavy metals.
Collapse
Affiliation(s)
- Xin-Xin Liu
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, College of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, China
| | - Xin Hu
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, College of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, China
| | - Yue Cao
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, College of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, China
| | - Wen-Jing Pang
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, College of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, China
| | - Jin-Yu Huang
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, College of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, China
| | - Peng Guo
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, College of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, China
| | - Lei Huang
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, College of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, China
| |
Collapse
|