Article
Environmental Sciences
Michael W. Duffel, Kristopher Tuttle, Hans-Joachim Lehmler, Larry W. Robertson
Summary: PCB sulfates bind reversibly with high affinity to human serum proteins, are taken up by cells and tissues, and may be hydrolyzed to more toxic OH-PCBs. Human hepatic microsomal sulfatase can catalyze the hydrolysis of PCB sulfates to OH-PCBs, potentially contributing to the retention and increased exposure time of OH-PCBs.
ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY
(2021)
Article
Ecology
Flavien Maucourt, Aurelie Cebron, Helene Budzinski, Karyn Le Menach, Laurent Peluhet, Sonia Czarnes, Delphine Melayah, David Chapulliot, Laurent Vallon, Gael Plassart, Mylene Hugoni, Laurence Fraissinet-Tachet
Summary: This study investigated the microbial diversity from the three domains of life in a long-term contaminated brownfield. The results showed a significant increase in microbial abundance according to PCB concentrations in soil samples. Some bacteria belonging to the Gammaproteobacteria class and fungi affiliated with the Saccharomycetes class or Pleurotaceae family, known for their ability to transform PCBs, were abundantly found in highly polluted soil samples.
Article
Environmental Sciences
Jiahui Fan, Yangyang Jia, Dongdong Xu, Zhe Ye, Jiahang Zhou, Jionghao Huang, Yulong Fu, Chaofeng Shen
Summary: It was found that Rhodococcus biphenylivorans TG9 enters a viable but nonculturable (VBNC) state under anaerobic conditions, leading to a significant reduction in metabolic activity and degradation ability. However, resuscitation by providing oxygen can restore the degrading capacity of TG9 in the VBNC state, providing a new strategy to cope with survival under anaerobic conditions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Ali Mehdinia, Fatemeh Bateni, Davoud Jahedi Vaighan, Neda Sheijooni Fumani
Summary: The study quantified selected PCB congeners in Chabahr bay and surrounding areas in Iran, with concentrations varying from below detection limit to 485 ng kg-1 dry weight of sediment. The dominance of PCB 28 and 52 suggests maritime transportation and atmospheric deposition as important sources, with commercial products like ClophenA50 also potentially contributing. Overall, the impact of detected PCBs on aquatic organisms was deemed negligible based on guidelines.
MARINE POLLUTION BULLETIN
(2021)
Article
Microbiology
Flavien Maucourt, Bastien Doumeche, David Chapulliot, Laurent Vallon, Sylvie Nazaret, Laurence Fraissinet-Tachet
Summary: This study identified microbial species capable of transforming polychlorinated biphenyls (PCBs) and investigated their ligninolytic enzyme activities. The activities of oxidase and peroxidase, particularly enhanced in the presence of PCBs, were found to potentially contribute to the transformation process.
Review
Engineering, Environmental
Auwalu Hassan, Fauziah S. Hamid, Agamuthu Pariatamby, Nurul Shamsinah M. Suhaimi, Noor Maiza binti M. Razali, Kimberly N. H. Ling, Priya Mohan
Summary: This review provides a detailed overview of bioremediation technologies for PCB-contaminated environments, discusses bioaugmentation approaches for treating contaminated soil, sediment, and wastewater, explores limitations and strategies to improve efficiency, gives an update on PCB biodegradation studies and mechanisms, and explores future research prospects based on the reviewed articles.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Microbiology
Camille Marchal, Joaquim Germain, Muriel Raveton, Blandine Lyonnard, Cindy Arnoldi, Marie-Noelle Binet, Bello Mouhamadou
Summary: PCBs influence the richness and composition of fungal communities in polluted soils, with the specific fungal communities varying based on both PCBs and soil properties. Sixteen common fungal species were identified across all three PCB-polluted soils, suggesting their ubiquity in such environments.
Article
Engineering, Environmental
Christian M. Bako, Andres Martinez, Jessica M. Ewald, Jason B. X. Hua, David J. Ramotowski, Qin Dong, Jerald L. Schnoor, Timothy E. Mattes
Summary: In this study, we found that bioaugmentation with aerobic, polychlorinated biphenyl (PCB) degrading microorganisms can effectively reduce PCB emissions from contaminated sediment to air. Through synthetic samples and qPCR analysis, it was observed that the total PCB mass in the bioaugmented treatment decreased by 57% on average, with a preferential biodegradation of lower-chlorinated PCBs. The use of the phytogenic biosurfactant, saponin, was also found to enhance the abundance of the degrading microorganisms and promote the biodegradation process. These findings demonstrate that bioaugmentation can be an effective approach to reduce PCB emissions and minimize exposure risks in surrounding communities.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Yongfeng Xu, Ying Teng, Xiaomi Wang, Wenjie Ren, Ling Zhao, Yongming Luo, Peter Christie, Chris Greening
Summary: Endogenous hydrogen (H2) is produced through rhizobium-legume associations and can influence the microbial ecology and biogeochemistry of contaminated soils. This study shows that endogenous H2 promotes the biodegradation of tetrachlorobiphenyl PCB 77 by selecting bacteria harboring PCB degradation genes.
ENVIRONMENT INTERNATIONAL
(2023)
Article
Environmental Sciences
J. Germain, M. Raveton, M. N. Binet, B. Mouhamadou
Summary: The study shows that native fungal strains isolated from PCB contaminated sites have significant biodegradation and detoxification capabilities, with only a few strains able to reduce the toxicity associated with PCBs and their metabolites. The enzymatic activities induced by PCBs vary among strains.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Microbiology
Jachym Suman, Michal Strejcek, Andrea Zubrova, Jan Capek, Jiri Wald, Klara Michalikova, Miluse Hradilova, Kamila Sredlova, Jaroslav Semerad, Tomas Cajthaml, Ondrej Uhlik
Summary: This study assessed the diversity of bphA genes in microbial populations in legacy PCB-contaminated soil through stable isotope probing, identifying a high homology sequence variant with potential substrate specificity related properties. This BphA variant was further investigated for its involvement in the metabolism of flavonoid compounds, providing new insights into the interactions between plants, microbes, and anthropogenic compounds in soil.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Environmental Sciences
Shuang Wang, Jibing Li, Longfei Jiang, Shanquan Wang, Xuan Zhao, Yeliang Dai, Chunling Luo, Gan Zhang
Summary: The study applied stable-isotope probing to investigate the degradation of PCBs mediated by RD-AO, confirming the impact of the anaerobic stage on subsequent AO and its potential mechanism. Additionally, four lineages (Arenimonas, Steroidobacter, Sulfurifustis, and Thermoanaerobacterales) were identified as PCB degraders for the first time, suggesting the recruitment of novel bacteria involved in PCB aerobic degradation in the anaerobic-aerobic two-stage treatment.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Kallayanee Naloka, Duangporn Polrit, Chanokporn Muangchinda, Honglada Thoetkiattikul, Onruthai Pinyakong
Summary: Three nonpathogenic effective bacterial hydrocarbon degraders were isolated from PAH-enriched sediments, showing broad substrate specificities and potential for bioremediation. The mixed bacterial consortium immobilized on plastic balls achieved efficient degradation and removal of fuel oil, highlighting the cooperative interaction between Rhodococcus and Mycolicibacterium for bioremediation applications.
Article
Environmental Sciences
Kenneth Finkelstein, Edward F. Wirth, K. W. Chung, B. S. Shaddrix, E. C. Pisarski, C. Rios
Summary: By studying a chronic polychlorinated biphenyl (PCB) sediment dose-response model, researchers were able to predict the injury to benthic invertebrates. The validity of the 2017 model was confirmed based on acute aquatic toxicity results and a general acute-to-chronic injury concentration ratio, providing a reasonable estimate for potential benthic invertebrate injury.
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2021)
Article
Environmental Sciences
Alice Peiying Wang, Jason Conder, Bart Chadwick, Gunther Rosen
Summary: This study demonstrates the effectiveness of activated carbon-based amendments in reducing the availability of sediment-associated organic compounds, such as polychlorinated biphenyls (PCBs). The long-term monitoring results show a significant reduction in PCB availability and no negative impacts on the benthic community. The study also explores the use of carbon petrography and black carbon chemical oxidation methods for quantifying activated carbon content.
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2022)
Article
Environmental Sciences
Jiafang Cai, Aodong Pan, Yilin Li, Yeyuan Xiao, Yan Zhou, Chongjun Chen, Faqian Sun, Xiaomei Su
Summary: The study explored a novel method of using resuscitation-promoting factors (Rpfs) to enhance the degradation efficiency of the dye RB19 in anaerobic processes. Results showed that Rpfs efficiently promoted RB19 decolorization, increasing decolorization efficiency by over 20%. Additionally, Rpfs appeared to stimulate and enrich dye-degrading species of the family Peptostreptococcaceae, leading to higher RB19 decolorization efficiency.
Article
Environmental Sciences
Xiaomei Su, Si Li, Mengqi Xie, Linqin Tao, Yan Zhou, Yeyuan Xiao, Hongjun Lin, Jianrong Chen, Faqian Sun
Summary: Using Rpf from Micrococcus luteus can enhance the biodegradation of PCBs in contaminated environments by resuscitating and stimulating functional bacterial populations. It was found that Rpf significantly altered the composition and abundance of bacterial populations in the phylum Proteobacteria, with Sphingomonas and Pseudomonas identified as key PCB-degraders. These results suggest that Rpf has the potential to improve the efficiency of bioremediation processes in PCB-contaminated environments.
Article
Biotechnology & Applied Microbiology
Mengqi Xie, Luning Xu, Rong Zhang, Yan Zhou, Yeyuan Xiao, Xiaomei Su, Chaofeng Shen, Faqian Sun, Muhammad Zaffar Hashmi, Hongjun Lin, Jianrong Chen
Summary: The study revealed that a yeast strain capable of degrading phenol entered the viable but nonculturable (VBNC) state under high concentrations of contaminants, and the resuscitation of VBNC cells restored their degradation performance. Compared to normal cells, significant morphological, surface, and physiological changes were observed in the VBNC cells.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2021)
Review
Environmental Sciences
Muhammad Zaffar Hashmi, Muhammad Kalim, Umar Farooq, Xiaomei Su, Paromita Chakraborty, Shams Ur Rehman
Summary: This review paper discusses the recent development in photocatalytic and chemical techniques for the remediation of PCBs in contaminated soils. Advanced oxidation is found to be an efficient remediation technique with high removal efficiency of PCBs. Persulfate oxidation is identified as a suitable technique that can work under normal environmental conditions. Factors such as pH, temperature, and the use of surfactants and organic solvents affect the effectiveness of these techniques.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Siying Sun, Jiabao Ren, Jiale Liu, Liang Rong, Hangli Wang, Yeyuan Xiao, Faqian Sun, Rongwei Mei, Chongjun Chen, Xiaomei Su
Summary: The study found that pyrite-activated persulfate oxidation efficiently removed organic matter from the effluent of a biological landfill leachate treatment system, and subsequent denitrification was also successful. With the optimal parameters, a COD removal efficiency of about 45% and a nitrate removal rate of around 108 mg L-1 d(-1) were achieved.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Yilin Li, Wenjia Zhang, Yun Dai, Xiaomei Su, Yeyuan Xiao, Dan Wu, Faqian Sun, Rongwu Mei, Jianrong Chen, Hongjun Lin
Summary: This study investigated the start-up, influencing factors, and stable operation of partial denitrification for treating biological effluent from landfill leachate. The research found a suitable ratio of nitrate/ammonium for downstream Anammox process, and highlighted the importance of carbon sources, COD/NO3--N ratio, and salinity in partial denitrification.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Qihua Lin, Xinru Zhou, Shusheng Zhang, Junliang Gao, Mengqi Xie, Linqin Tao, Faqian Sun, Chaofeng Shen, Muhammad Zaffar Hashmi, Xiaomei Su
Summary: Functional microorganisms in a viable but non-culturable state limit the study of PCB-degrading strains. This study found that the resuscitated strain SPC0 from genus Streptococcus has the potential to degrade PCBs through the biphenyl pathway, highlighting the powerful capability of resuscitated strains for bioremediation of PCB-contaminated sites.
ENVIRONMENTAL RESEARCH
(2022)
Review
Biotechnology & Applied Microbiology
Mayada Jamal, Annoor Awadasseid, Xiaomei Su
Summary: Anthraquinone dyes, widely used in textile manufacturing, pose a significant pollution threat due to their complex and stable structures. Microbiological treatment of wastewater has emerged as an economically viable solution, with promising advances in the biodegradation of anthraquinone dyes.
BIOTECHNOLOGY LETTERS
(2022)
Article
Biotechnology & Applied Microbiology
Xiaomei Su, Mengqi Xie, Zhen Han, Yeyuan Xiao, Rui Wang, Chaofeng Shen, Muhammad Zaffar Hashmi, Faqian Sun
Summary: This study discovered the enhancement of Rpf on the anaerobic microbial dechlorination of PCE/PCBs and uncovered the underlying Rpf-responsive populations. It reveals the possibility of rapidly enriching active dechlorinating cultures through Rpf amendment, providing a new approach for massively enriching PCB dechlorinators in short periods of time.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2023)
Article
Environmental Sciences
Zhen Han, Qihua Lin, Shusheng Zhang, Xinru Zhou, Si Li, Faqian Sun, Chaofeng Shen, Xiaomei Su
Summary: The study found that the resuscitated strain LS1 has the potential to degrade polychlorinated biphenyls (PCBs), with better performance in degrading PCB 18 and 52. LS1 exhibited lower efficiency in degrading PCB 77. Additionally, LS1 can survive and remain culturable in PCB-contaminated soil for up to 70 days.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Xinru Zhou, Shusheng Zhang, Rui Wang, Zijing An, Faqian Sun, Chaofeng Shen, Hongjun Lin, Xiaomei Su
Summary: The study found that Rpf of Micrococcus luteus can resuscitate and stimulate the growth of PCB-degrading bacterial populations, thereby improving the bioremediation efficiency of PCBs. Soil microcosms amended with Rpf and LS1 degraded PCBs 1.1-3.2 times faster than control microcosms. The degradation process mainly occurred through the HOPDA-benzoate-catechol/protocatechuate pathways. These results suggest that Rpf and resuscitated strains serve as effective additives and bio-inoculants for enhanced bioremediation, providing new approaches for large-scale applications of in situ bioremediation.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Qihua Lin, Jiayan Ding, Yingying Yang, Faqian Sun, Chaofeng Shen, Hongjun Lin, Xiaomei Su
Summary: The feasibility of utilizing an immobilization approach to enhance the PCBs degradation performance of a resuscitated strain Streptococcus sp. SPC0 was evaluated in this study. The results showed that the mixed matrix of polyvinyl alcohol (PVA) and sodium alginate (SA) provided a porous microstructure for SPC0 colonization and proliferation, leading to enhanced removal of PCBs through simultaneous adsorption and biodegradation. Immobilized SPC0 demonstrated 1.0-7.1 times higher PCB removal than free cells, with higher concentrations achieving more effective removal. Moreover, the immobilized SPC0 showed excellent stability and reusability after four cycles of reuse.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Green & Sustainable Science & Technology
Rong Zhang, Min Zhang, Huaqian Mou, Zijing An, Hailu Fu, Xiaomei Su, Chongjun Chen, Jianrong Chen, Hongjun Lin, Faqian Sun
Summary: Kitchen waste biochar showed better performance in thermophilic co-digestion, reducing the digestion time and increasing methane production. It also improved the microbial community structure and enhanced the acetoclastic methanogenesis in thermophilic co-digestion.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Environmental Sciences
Rui Wang, Zijing An, Lu Fan, Yan Zhou, Xiaomei Su, Junjie Zhu, Qian Zhang, Chongjun Chen, Hongjun Lin, Faqian Sun
Summary: Quorum quenching (QQ) is a novel technique for controlling biofouling in membrane bioreactors (MBRs) by disrupting quorum sensing (QS) and inhibiting biofilm formation. This study evaluated the effectiveness of the QQ strain Brucella sp. ZJ1, encapsulated in alginate beads, in mitigating biofouling. The results showed that MBR with QQ beads extended operation time by 2-3 times without affecting pollutant degradation, and these beads maintained approximately 50% QQ activity even after 50 days of operation.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Junliang Gao, Rui Wang, Yilin Li, Huimin Huang, Xiaomei Su, Zijing An, Wenjun Yin, Lizhen Yang, Liang Rong, Faqian Sun
Summary: The effect of two aeration modes in the aerobic phase on nitrogen removal and N2O emission in treating landfill leachate was compared. Increasing dissolved oxygen showed positive effects on nitrogen removal and minimized N2O emission. However, high dissolved oxygen concentration reduced nitrogen removal and led to high N2O emission.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
