JOURNAL OF BASIC MICROBIOLOGY
·
2016
·Vol. 56
·期 11
·1194-1202
·
IF 1.585
Xia Tang,Shunwen Dong,Wenjin Shi,Ni Gao,Lei Zuo,Heng Xu
This study focused on the bioremediation role of Pleurotus eryngii in different characteristics soils contaminated with nickel (Ni) and fluoranthene. The results of bioremediation experiments showed that fluoranthene had a positive effect on the growth of P. eryngii , whereas Ni exerted a negative influence. The concentration of fluoranthene significantly decreased in inoculated soil accounting for 86.39–91.95% of initial concentration in soils and 71.46–81.76% in non-inoculated soils, which showed that the dissipation of fluoranthene was enhanced by mushroom inoculating. The highest removal rates of fluoranthene in sandy loam, loamy clay, and sandy soils reached to 87.81, 86.39, and 91.95%, respectively, which demonstrated that P. eryngii was more suitable for the bioremediation of sandy soil contaminated with fluoranthene. In addition, the presence of Ni tended to decrease the dissipation of fluoranthene in inoculated soil. Higher ligninolytic enzymes activities were detected in inoculated soils, resulting in the enhanced dissipation of fluoranthene in inoculated soils. Furthermore, P. eryngii had the ability to uptake Ni (4.88–39.53 mg kg −1 ) in co-contamination soil. In conclusion, the inoculating of P. eryngii was effective in remediating of Ni-fluoranthene co-contaminated soils.
研究领域:
环境科学
·
微生物学
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DOI
PubMed
高影响因子
LUMINESCENCE
·
2023
·Vol. 38
·期 11
·1938-1945
·
IF 2.9
Jiayan Shen,Long Li,Kehan Xu,Kaijun Wang,Yiping Du,Ting Wu,Huipeng Deng
A rapid and sensitive strategy was proposed for the detection of fluoranthene (FL), which is a polycyclic aromatic hydrocarbon (PAH), in water samples. In this work, syringe solid-phase extraction (SPE) combined with solid-phase fluorescence spectrometry was used to determine FL in PAHs polluted environmental samples. The fluorescence signals were directly monitored on the membrane surface after FL was enriched by syringe SPE. Under the optimal conditions, the proposed method showed a linear relationship in the concentration range 2–50 μg/L with a correlation coefficient ( R 2 ) of 0.998, and the limit of detection was 0.143 μg/L. The recoveries varied from 93.47% to 109.81% in the actual samples, with the relative standard deviations ( n = 3) ranging from 2.06% to 6.32%. According to the results, the established method can be applied in the field of rapid detection as it is fast, simple, portable, and highly sensitive, and has strong anti-interference.
研究领域:
环境科学
·
分析化学
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产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL RESEARCH
·
2021
·
IF 6.498
Li Changmei,Wei Gengrui,Wu Haizhen,Wang Yuxiao,Zhu Shuang,Wei Chaohai
Polycyclic aromatic hydrocarbons (PAHs) and phenol are persistent pollutants that coexist in coking wastewater (CWW). Fluoranthene (Flu) is the predominant PAH species in the CWW treatment system. Our work emphasized on distinguishing the effects of phenol on Flu biodegradation by co-culture of Stenotrophomonas sp. N5 and Advenella sp. B9 and illustrated the molecular mechanisms. Results showed Flu biodegradation by co-culture was enhanced by phenol. According to the first-order degradation kinetic analysis of Flu, phenol significantly increased the biodegradation rate constant and shortened the half-life of Flu. Transcriptome analysis pointed out the up-regulation of DNA repair activity and 3717 significantly differentially expressed genes (DEGs), were triggered by 800 mg/L phenol. GO enrichment analysis suggested these DEGs are mainly concentrated in biochemical processes such as metal ion binding and alpha-amino acid biosynthesis, which are closely associated with Flu biodegradation, indicating that phenol promotes DNA repair activity and reduces Flu genotoxicity. qRT-PCR was performed to detect the gene expression of aromatic ring-opening dioxygenase. Combined with transcriptome analysis, the qRT-PCR results suggested phenol did not induce the expression of related PAHs-degrading enzymes. RNA extraction and microbial growth curves of COC and COC + Ph provided further evidence that phenol serves as co-substrate which increases biomass and the concentration of degrading enzymes, therefore promoting the Flu degradation.
研究领域:
环境科学
·
微生物学
·
分子生物学
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DOI
高影响因子
BIORESOURCE TECHNOLOGY
·
2025
·
IF 9
Yong Yang,Guangming Zhang,Jie Pan,Zhen Zhang,Ning Mao,Shiwei Wang,Yanmei Sun
Enhanced microbial remediation represents a promising technique for the removal of polycyclic aromatic hydrocarbons (PAHs). However, high-efficiency remediation agents remain limited, including microbial resources and remediation materials. In this study, a novel strain of Pseudomonas xizangensis S4 was isolated from plateau lake sediment, exhibiting a fluoranthene degradation rate of 41.90 % at 50 ppm within 7 d. The key degradation genes identified through genomic and transcriptomic analyses included ndmC , dmpK , dmpB , and dmpH . The metabolites detected via GC–MS analysis were biphenyls, parabens, and phthalate esters. Based on the above results, the degradation mechanisms of fluoranthene were deduced. Furthermore, an efficient remediation agent was developed, utilizing potassium humate-modified biochar to immobilize bacterial cells. The developed remediation agent enhanced the removal efficiency by 16.71 % compared to the single strain. Thus, the application of potassium humate-modified biochar for the immobilization of P. xizangensis S4 represents a promising method for the remediation of PAH-contaminated soil.
CAS / MDL:
研究领域:
环境科学
·
微生物学
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产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Xianxian Sheng,Yulong Liu,Mudassir Habib,Shuguang Lyu
In the advanced oxidation process for the remediation of organic contaminated water and soil, sodium percarbonate (SPC) is regarded as a potential oxidant. Iron sulfide (FeS) was chosen as an activator in this work for assisting fluoranthene (FLT) removal, with Fe(III) addition overcoming the solution pH constraint on FLT removal in the SPC/FeS process. At the optimal chemical dosages, SPC/FeS (pH = 3.0) and SPC/FeS/Fe(III) (pH = 5.7) processes removed approximately 100% and 92.8% of FLT, respectively. Based on the results of scavenging trials and electron paramagnetic resonance analysis, HO• was the dominant reactive oxygen species in FLT removal by SPC/FeS and SPC/FeS/Fe(III) processes. Dissolved oxygen (DO) played a crucial role in FLT removal, and SPC/FeS/Fe(III) process was more dependent on DO than SPC/FeS process. Both processes overcame the limitation of Cl – on the application of SPC-induced oxidation process. In actual groundwater experiments, 95.5% of FLT was removed in SPC/FeS/Fe(III) process at an initial solution pH of 5.0. In soil slurry trials, 12 h was the optimal reaction time for FLT removal, and the SPC/FeS and SPC/FeS/Fe(III) processes degraded 85.6% and 86.7% of FLT, respectively. In conclusion, the FeS-activated SPC-induced oxidation process offers perspectives for PAHs contaminated field decontamination and contributes to the optimization of modern oxidation methods.
研究领域:
环境科学
·
化学
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产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Na Li,Xueyan Wu,Yan Lv,Jinxia Chi,Jixi Guo
Fluoranthenes, an important subclass of polycyclic aromatic hydrocarbons, have continued to attract considerable attention in the fields of synthetic organic chemistry and materials science. However, due to the strong π–π intermolecular interactions resulting from highly planar π–π conjugated structures, they usually suffer from aggregation caused quenching (ACQ) in the solid state, which limits their further applications. In this study, SOF and DOF are synthesized via a modified nickel-catalyzed Kumada coupling reaction using o-carborane with three-dimensional clusters and 3-bromofluoranthene as the starting materials. The structural characteristics, luminescence properties, and stimuli-responsive behavior of these compounds are systematically investigated through single crystal structure analysis, UV-vis absorption spectroscopy, fluorescence spectroscopy, and DFT theoretical calculations. For SOF, the formation of excimers is identified as the primary cause of thermochromism. The DOF exhibits excellent properties of aggregation-induced emission (AIE) and quantum yields as high as 18.75% in the solid state. Additionally, the transformation from crystalline to amorphous is the primary reason for the significant mechanochromism of DOF. The nearly perpendicular packing is beneficial for thermochromism, while the anti-parallel packing is likely to cause mechanochromism. These results suggest that o-carborane can play a distinctive role in precisely regulating the emission properties and stimulus response.
研究领域:
有机化学
·
材料科学
·
理论计算
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DOI
高影响因子
ENVIRONMENTAL TECHNOLOGY
·
2023
·
IF 2.8
Zhenzhen Yao,Xiaoman He,Mengqiuzi Yin,Han Han,Qiwu Zhang
A mechanochemical (MC) method was employed for the remediation of soil contaminated with fluoranthene (C16H10, FL) a four-ringed polycyclic aromatic hydrocarbon (PAH) containing three benzene rings and a central five-membered heterocyclic ring, with the effects of soil inorganic components, milling conditions, and the degradation mechanism investigated. Results showed that the addition of SiO2 and kaolin to soil resulted in a greater increase in the effectiveness of FL removal than other inorganic additives. After 3 hours of milling at 500 rpm, the FL removal rate from SiO2 containing soil, reached 99.26%, with the removal efficiency increasing in accordance with an increase in milling duration and speed. The milled samples were characterized by FT-IR, Raman spectroscopy, and GC-MS analysis, revealing the mechanism of FL degradation, including destruction of the aromatic skeleton structure and the formation of amorphous carbon and graphite. The MC remediation method was applied to FL contaminated soil, showing that FL was efficiently degraded in soil without any soil additives, resulting in a significant reduction in the biotoxicity of the remediated soil. The organic matter, moisture content and pH of the actual soil changed slightly after mechanical ball milling. Thus, the MC method has high potential in the remediation of PAH-contaminated soils.HIGHLIGHTSA mechanochemical (MC) method for the degradation of fluoranthene was assessed.The use of silica and kaolin as soil additives enhances fluoranthene remediation.Fluoranthene can be efficiently removed from contaminated soil by milling alone.The degradation mechanism was skeleton structure destruction and carbonization.The biotoxicity of soil was significantly reduced by milling.
研究领域:
环境科学
·
土壤学
·
污染控制
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DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Xianxian Sheng,Yulong Liu,Meesam Ali,Mudassir Habib,Rongbing Fu,Shuguang Lyu
Iron sludge generation poses a challenge to the application of Fenton/Fenton-like processes in wastewater treatment . In this study, sulfidated nano zero-valent iron (S-nZVI) was introduced to enhance the activation of sodium percarbonate (SPC) by Fe(III), mitigating the generation of iron sludge by promoting the Fe(III)/Fe(II) cycle. The proposed technique efficiently removed 94.3 % fluoranthene (FLT) in which HO• acted as the major reactive oxygen species responsible for FLT degradation. Toxicity analysis revealed phthalic acid and 1-phenylnaphthalene as FLT degradation intermediates which finally converted to CO 2 and H 2 O. Similarly, the luminous bacteria experiment also showed that the FLT degradation process was environmentally benign. The support of S-nZVI to the Fe(III)/Fe(II) cycle was determined by analyzing the morphology and characterization of S-nZVI. The removal of FLT reached more than 80 % at pH ranging from 3.0 to 10.0, and the detrimental effects of low concentrations of Cl − were mitigated. SPC/S-nZVI/Fe(III) process showed good removal of FLT (90 %) in both real groundwater and river simulation experiments. Furthermore, SPC/S-nZVI/Fe(III) process was successfully applied in soil slurry media with around 90 % FLT degradation in 12 h. The influence of the soil/water ratio on FLT removal was found to be negligible. SPC/S-nZVI/Fe(III) process was superior for the removal of mixed FLT, naphthalene , and phenanthrene contamination. In conclusion, the SPC/S-nZVI/Fe(III) system exhibits enormous potential in the remediation of polycyclic aromatic hydrocarbons (PAHs) contaminated sites.
研究领域:
环境科学
·
污染修复
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产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2018
·
IF 2.88
Yan Liang
Two fluoranthene derivatives with “propeller” structure, named as 7,8,9,10-tetraphenylfluoranthene ( TPFA ) and 3-phenoxy-7,8,9,10-tetraphenyl fluoranthene ( PO - TPFA ), were designed and synthesized by introducing outer phenyl and phenoxy substituents to fluoranthene. Given the steric hindrance of this unique structure, both organic dyes exhibited similar fluorescence spectra and strong fluorescence emission from the solution to the film state. The introduction of a phenoxy group showed obvious influence to the molecular optical properties of fluoranthene. Density functional theory calculations were further conducted to verify this finding. Both dyes were used as fluorescent probes and exhibited and sensitive fluorescence response to nitroaromatic explosives and highly selectivity to picric acid . Furthermore, PO - TPFA exhibited better detection performance to nitroaromatic explosives than TPFA . This work can serve as a guide for molecular fluorescence design because these dyes possess excellent fluorescence in solution and film states and can be used for the sensitive fluorescence detection of nitroaromatic explosives.
研究领域:
化学
·
材料科学
·
爆炸物检测
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产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL ENGINEERING SCIENCE
·
2018
·Vol. 35
·期 4
·279-288
·
IF 1.547
Guanghui Wang,Yao Jiang,Suhang Hu,Yadan Guo
Phytoremediation may be used for remediation of cocontaminated soil with heavy metals and polycyclic aromatic hydrocarbons (PAHs). However, the low bioavailability of heavy metals and PAHs in soils may have adverse effects on the efficiency of phytoremediation; it is necessary to find an effective method for simultaneously improving bioavailability of PAHs and heavy metals in cocontaminated soils. In this study, a novel aspartic acid-β-cyclodextrin (ACD) was synthesized, the structural characteristics of ACD were confirmed by FT-IR spectroscopy, and the complexation of fluorene (Flu) and cadmium (Cd) with ACD was studied. Pot culture experiments were conducted to investigate effects of ACD on phytoremediation of soil cocontaminated with Flu and Cd. Results showed that ACD could enhance uptake of Flu and Cd in alfalfa (Medicago sativa L.), and removal percentages of Flu and Cd in planted soil with ACD increased from 45.78% and 25.62% to 66.96% and 34.88%, respectively. Biological activity of planted soils with ACD was obviously higher than that of planted soils without ACD, which resulted in improvement of phytoremediation efficiency. As a promising remediation strategy, ACD-assisted phytoremediation may be a feasible technology for simultaneous removal of PAHs and heavy metals in cocontaminated soils.
研究领域:
环境科学
·
植物学
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产品关联
DOI
高影响因子
Analytical Methods
·
2017
·Vol. 9
·期 11
·1816-1824
·
IF 1.9
Lanlan Xiao,Min Zhang,Zhen Liu,Weiwei Bian,Xiaoli Zhang,Jinhua Zhan
The migration of solid samples from the interior to the surface of materials has raised serious concerns due to the increasing environmental health hazards in recent years. The convenient in situ detection of polycyclic aromatic hydrocarbons (PAHs) is especially needed. Surface-enhanced Raman spectroscopy (SERS) has emerged as an effective tool for spectroscopic detection and gives unique spectroscopic fingerprints of analytes. In this study, a hydrophobic 1-propanethiol-modified Ag nanowire membrane (PTH-Ag NMs) coupled with a portable Raman spectrometer was developed for the flexible on-site swabbing extraction and detection of typical PAHs. The swabbing process using an extracting agent was similar to the contact between a baby's mouth and toys. The SERS substrate suggested high uniformity, stability, and reusability. The curve of the normalized SERS intensity against the fluoranthene concentration displayed a good linear relationship (R2 = 0.98). The detection levels of fluoranthene, anthracene and pyrene reached 40.45, 35.65, and 45.45 ng cm−2, respectively. In addition, the simulated detection of these three PAHs on children's toys was demonstrated. The prepared hydrophobic PTH-Ag NMs have potential applications in the field of the inspection of toys by a simultaneous processing with simple pretreatment and a short total analysis time.
研究领域:
分析化学
·
环境科学
·
材料科学
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产品关联
DOI
高影响因子
BIORESOURCE TECHNOLOGY
·
2024
·
IF 9.7
Qingyang Jiang,Leiyu Feng,Jingyang Luo,Yang Wu,Haiqing Dong,Ahmed M. Mustafa,Yu Su,Yuxiao Zhao,Yinguang Chen
The impact and mechanism of fluoranthene (Flr), a typical polycyclic aromatic hydrocarbon highly detected in sludge, on alkaline fermentation for volatile fatty acids (VFAs) recovery and antibiotic resistance genes (ARGs) transfer were studied. The results demonstrated that VFAs production increased from 2189 to 4272 mg COD/L with a simultaneous reduction of ARGs with Flr. The hydrolytic enzymes and genes related to glucose and amino acid metabolism were provoked. Also, Flr benefited for the enrichment of hydrolytic-acidifying consortia ( i.e. , Parabacteroides and Alkalibaculum ) while reduced VFAs consumers ( i.e. , Rubrivivax ) and ARGs potential hosts ( i.e. , Rubrivivax and Pseudomonas ). Metagenomic analysis indicated that the genes related to cell wall synthesis, biofilm formation and substrate transporters to maintain high VFAs-producer activities were upregulated. Moreover, cell functions of efflux pump and Type IV secretion system were suppressed to inhibit ARGs proliferation. This study provided intrinsic mechanisms of Flr-induced VFAs promotion and ARGs reduction during alkaline fermentation.
研究领域:
环境科学
·
微生物学
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DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）