Article
Environmental Sciences
T. S. Rejiniemon, R. Lekshmi, Hissah Abdulrahman Alodaini, Ashraf Atef Hatamleh, Rengasamy Sathya, Palaniselvam Kuppusamy, Munirah Abdullah Al-Dosary, M. Kalaiyarasi
Summary: This study screened three bacterial strains capable of degrading naphthalene (NAP) using an enrichment culture method. The identified strains were Bacillus cereus CK1, Pseudomonas aeruginosa KD4, and Enterobacter aerogenes SR6. The bacterial consortium demonstrated efficient NAP degradation under optimal conditions, highlighting its potential for removing polycyclic aromatic hydrocarbons (PAHs).
Review
Environmental Sciences
Chao Chen, Zhan Zhang, Ping Xu, Haiyang Hu, Hongzhi Tang
Summary: Although many anaerobic microorganisms capable of degrading PAHs have been identified, there is still a significant gap between laboratory research and practical applications. This review discusses recent advancements in the biodegradation of PAHs under anaerobic conditions, focusing on the metabolic pathways and functional genes involved. The achievements and strategies for enhancing anaerobic PAHs bioremediation in soil are summarized. Future perspectives, including challenges such as time-consuming enrichment, unknown toxicity of byproducts, and activity inhibition at low temperatures, are proposed. Additionally, the use of meta-omics, synthetic biology, and engineering microbiome for developing microbial inoculum is discussed, highlighting the potential for further advancements in anaerobic bioremediation.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Jose Trevino-Resendez, Petia Mijaylova Nacheva
Summary: This research focused on the synergistic removal of two commonly found polycyclic aromatic hydrocarbons, Naphthalene and Phenanthrene, through a combination of electro-oxidation and biodegradation in a submerged membrane bioreactor. The study found that the use of Ti/IrO2 anode and specific operating conditions led to high removal efficiencies for both compounds, demonstrating the feasibility of the coupled EO-SMBR system in treating PAH-contaminated water.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Biochemistry & Molecular Biology
Ewa Mlyczynska, Alice Bongrani, Christelle Rame, Malgorzata Wegiel, Anna Maslanka, Piotr Major, Piotr Zarzycki, Pierre-Henri Ducluzeau, Arnaud De Luca, Celine Bourbao-Tournois, Pascal Froment, Agnieszka Rak, Joelle Dupont
Summary: This study aimed to determine the concentrations of polycyclic aromatic hydrocarbons (PAHs), especially naphthalene, in the plasma and adipose tissue of French and Polish bariatric patients and investigate their correlation with body mass index (BMI), adipokines expression levels, and the effects of naphthalene on cell proliferation and differentiation. The results showed that PAHs and naphthalene could potentially be obesogenic molecules, as naphthalene concentration in adipose tissue was positively correlated with BMI and adipokines expression in French patients. Moreover, naphthalene exposure increased cell proliferation and differentiation, suggesting an involvement in adipogenesis/lipogenesis.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Environmental Sciences
Luisa Albarano, Ilaria De Rosa, Ilaria Santaniello, Maria Montuori, Sara Serafini, Maria Toscanesi, Marco Trifuoggi, Giusy Lofrano, Marco Guida, Giovanni Libralato
Summary: This research examined the short-term effects (48 hours of exposure) of polycyclic aromatic hydrocarbons (PAHs) mixtures on the nauplii and adult of Artemia franciscana. The study found additive or synergic effects for most PAHs combinations, except for naphthalene + phenanthrene which showed an antagonistic effect. The expression level of five stress-response genes in Artemia was also impacted by the PAHs mixtures.
ENVIRONMENTAL POLLUTION
(2023)
Article
Marine & Freshwater Biology
Gui-Li Yang, Meng-Jun Huang, Ai-Juan Tan, Shi-Ming Lv
Summary: The study found that high concentrations of MC-LR (>= 25 µg/L), NAP (>= 10 µg/L), and their mixture (>= 10 + 1 µg/L) in eutrophic waters can reduce the growth and chlorophyll-a contents of Landoltia punctata. After 7 days of exposure, starch accumulation in L. punctata does not decrease when exposed to NAP and MC-LR, and the antioxidant responses are enhanced. The results suggest that higher NAP concentrations can enhance the bioaccumulation of MC-LR in L. punctata.
AQUATIC TOXICOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Tingting Zhang, Guizhi Mu, Shourong Zhang, Jialin Hou
Summary: The study investigated the reaction pathways from phenyl radicals to PAHs through addition reactions with C2H3 and C4H4, utilizing the G3 method to calculate rate constants and evaluating the influence of different additions on reaction rates. The improved model showed effectiveness in promoting PAH formations, with the C4H4 addition pathways being particularly beneficial for PAH formation in butane flames.
Article
Engineering, Environmental
Jialu Fan, Xianbo Sun, Yongdi Liu, Dongye Zhao, Xiaodi Hao, Wen Liu, Zhengqing Cai
Summary: The photochemical behavior of naphthalene, a model PAH, was investigated under simulated sunlight irradiation in seawater with different dissolved organic matter (DOM). The results showed that naphthalene could undergo direct photolysis and degradation reactions induced by DOM and reactive oxygen species. The presence of fulvic acid and humic acid in DOM promoted the degradation kinetics of naphthalene. However, high levels of DOM led to reduced degradation rates. The study also identified degradation intermediates and found that some of them were more toxic than the original naphthalene.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Toxicology
Nathanial C. Stevens, Patricia C. Edwards, Lisa M. Tran, Xinxin Ding, Laura S. Van Winkle, Oliver Fiehn
Summary: The study found that naphthalene has region-specific toxic effects on the lungs of mice, causing cytotoxicity through cytochrome P450-mediated bioactivation. There are differences in metabolic responses and clearance rates of naphthalene between male and female mice, with females showing higher susceptibility. This research provides insights into potential mechanisms contributing to naphthalene toxicity and presents a novel approach for lung metabolomic analysis.
TOXICOLOGICAL SCIENCES
(2021)
Article
Environmental Sciences
Daijun Zhang, Xinkuan Han, Shangbo Zhou, Shupei Yuan, Peili Lu, Shuchan Peng
Summary: The study demonstrated that microorganisms could efficiently degrade PAHs using NO in denitrification processes, providing a new perspective for the remediation of PAH pollution. Analysis of microbial community structure revealed that Pseudomonas and Ochrobactrum played key roles in NO-dependent phenanthrene degradation system.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Chemistry, Physical
Ralf Kaiser, Long Zhao, Wenchao Lu, Musahid Ahmed, Marsel Zagidullin, Valeriy N. Azyazov, Alexander M. Mebel
Summary: Resonantly stabilized free radicals are considered fundamental molecular building blocks in the formation of polycyclic aromatic hydrocarbons and carbonaceous nanoparticles. Research has shown the formation of benzene and naphthalene through specific reactions at elevated temperatures, providing important insights into organic hydrocarbon chemistry in high temperature circumstellar environments and combustion systems.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Multidisciplinary Sciences
Yusuke Nakakuki, Takashi Hirose, Hikaru Sotome, Min Gao, Daiki Shimizu, Ruiji Li, Jun-Ya Hasegawa, Hiroshi Miyasaka, Kenji Matsuda
Summary: Helically twisted conductive nanocarbon materials are suitable for optoelectronic and electromagnetic molecular devices on the nanometer scale, showing a large effective conjugation length and ultrafast decay dynamics. The extended π-helicenes achieved a large effective conjugation length through helical fusion, leading to an absorption edge in the near-infrared region.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Xiushang Xu, Amy L. Vonder Haar, Rengo Yoshioka, Qizheng Zhang, Serhii Vasylevskyi, Andrew J. Musser, Akimitsu Narita
Summary: A benzo[rst]pentaphene derivative, BPP-MeOPA, was synthesized and characterized by NMR and single-crystal X-ray analysis. Investigation of its photophysical properties, including transient absorption spectroscopy, revealed improved absorption and emission features from an S-1 state with excitonic and charge-transfer character by introducing MeOPA groups.
CHEMICAL COMMUNICATIONS
(2023)
Review
Environmental Sciences
M. Alshabib
Summary: This review summarizes recent research on the removal of naphthalene from water, highlighting the excellent performance of modified materials and the potential of integrating adsorption with other processes. Existing shortcomings in current research efforts are also identified for consideration in future studies.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Review
Environmental Sciences
Meng Qiao, Weixiao Qi, Huijuan Liu, Jiuhui Qu
Summary: Oxygenated polycyclic aromatic hydrocarbons (OPAHs) have higher concentrations and toxicity in water environments, posing significant ecological risks to surface water ecosystems.
ENVIRONMENT INTERNATIONAL
(2022)