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Polycyclic aromatic hydrocarbons 5

polycyclic aromatic hydrocarbons (PAHs) 5

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-cyclodextrin (HPCD) 1

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Enhancing the aromatic selectivity of cyclohexane aromatization by CO2 coupling

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11,   Pages 1801-1808 doi: 10.1007/s11705-023-2325-9

Abstract: Improving the aromatic selectivity in the alkane aromatization process is of great importance for itsis introduced into the cyclohexane conversion process on the HZSM-5 zeolite, which can improve the aromaticBy optimizing the reaction conditions, an improved aromatic (benzene, toluene, xylene, and C9+2), 450 °C, and 1.7 h−1, which is better than that without CO2 (aromaticThis study may open a green, economic, and promising way to improve the aromatic selectivity for alkane

Keywords: aromatics     carbon dioxide     aromatization     coupling reaction     ZSM-5 zeolite    

Application of probabilistic risk assessment at a coking plant site contaminated by Polycyclic Aromatic

XIA Tianxiang,JIANG Lin,JIA Xiaoyang,ZHONG Maosheng,LIANG Jing

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 3,   Pages 441-450 doi: 10.1007/s11783-013-0572-6

Abstract: Application of Probabilistic Risk Assessment (PRA) and Deterministic Risk Assessment (DRA) at a coking plant site was compared. By DRA, Hazard Quotient (HQ) following exposure to Naphthalene (Nap) and Incremental Life Cancer Risk (ILCR) following exposure to Benzo(a)pyrene (Bap) were 1.87 and 2.12 × 10 . PRA revealed valuable information regarding the possible distribution of risk, and risk estimates of DRA located at the 99.59th and 99.76th percentiles in the risk outputs of PRA, which indicated that DRA overestimated the risk. Cleanup levels corresponding acceptable HQ level of 1 and ILCR level of 10 were also calculated for both DRA and PRA. Nap and Bap cleanup levels were 192.85 and 0.14 mg·kg by DRA, which would result in only 0.25% and 0.06% of the exposed population to have a risk higher than the acceptable risk, according to the outputs of PRA. The application of PRA on cleanup levels derivation would lift the cleanup levels 1.9 times for Nap and 2.4 times for Bap than which derived by DRA. For this coking plant site, the remediation scale and cost will be reduced in a large portion once the method of PRA is used. Sensitivity analysis was done by calculating the contribution to variance for each exposure parameter and it was found that contaminant concentration in the soil ( ), exposure duration ( ), total hours spent outdoor per day ( ), soil ingestion rate ( ), the air breathing rate ( ) and bodyweight ( ) were the most important parameters for risk and cleanup levels calculations.

Keywords: Probabilistic Risk Assessment (PRA)     a coking plant     risk     cleanup level     sensitivity analysis     polycyclic aromatic    

Migration and fate of polycyclic aromatic hydrocarbons in bioretention systems with different media:

Frontiers of Environmental Science & Engineering 2023, Volume 18, Issue 4, doi: 10.1007/s11783-024-1802-9

Abstract:

● Bioretention systems showed > 92% load reduction rates of PAHs.

Keywords: Bioretention     Polycyclic aromatic hydrocarbons     HYDRUS-1D     Model simulation     Migration    

Catalytic fast pyrolysis of Kraft lignin with HZSM-5 zeolite for producing aromatic hydrocarbons

Xiangyu LI, Lu SU, Yujue WANG, Yanqing YU, Chengwen WANG, Xiaoliang LI, Zhihua WANG

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 3,   Pages 295-303 doi: 10.1007/s11783-012-0410-2

Abstract: The aromatic yield increased considerably as the pyrolysis temperature increased from 500°C to 650°C,Under optimal reaction conditions, the aromatic yields were 2.0 wt.% and 5.2 wt.% for the two lignins

Keywords: lignin     catalytic fast pyrolysis     HZSM-5     zeolite     aromatic hydrocarbon    

Enrichment and transfer of polycyclic aromatic hydrocarbons (PAHs) through dust aerosol generation from

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 1, doi: 10.1007/s11783-023-1610-7

Abstract:

● Compositional patterns of PAHs in dust aerosol vary from soil during dust generation.

Keywords: Dust aerosols     Enrichment factors (EFs)     Polycyclic aromatic hydrocarbons (PAHs)    

Effect of ambient polycyclic aromatic hydrocarbons and nicotine on the structure of Aβ protein

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 2, doi: 10.1007/s11783-023-1615-2

Abstract:

● B[a]P, nicotine and phenanthrene molecules altered the secondary structure of Aβ42.

Keywords: Polycyclic aromatic hydrocarbons     Nicotine     toxicology     42 peptide     Alzheimer’s disease    

Persistent free radicals in humin under redox conditions and their impact in transforming polycyclic aromatic

Hanzhong Jia, Yafang Shi, Xiaofeng Nie, Song Zhao, Tiecheng Wang, Virender K. Sharma

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 4, doi: 10.1007/s11783-020-1252-y

Abstract: The generated ROS promoted the degradation of polycyclic aromatic hydrocarbons based on the radical quenching

Keywords: Humic substance     Polycyclic aromatic hydrocarbons (PAHs)     Persistent free radicals (PFRs)     Redox     Reactive    

Isolation of microbe for asymmetric reduction of prochiral aromatic ketone and its reaction characters

YANG Zhonghua, WANG Yu, WANG Guanghui, ZENG Rong, YAO Shanjing

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 4,   Pages 416-420 doi: 10.1007/s11705-007-0076-7

Abstract: The favorable microbes for the asymmetric reduction of prochiral aromatic ketones was isolated from soil

Keywords: excellent catalytic     prochiral aromatic     enantiomeric     -phenethyl     catalytic activity    

Reduced kinetic mechanism of -heptane oxidation in modeling polycyclic aromatic hydrocarbon formation

ZHONG Beijing, XI Jun

Frontiers in Energy 2008, Volume 2, Issue 3,   Pages 326-332 doi: 10.1007/s11708-008-0047-9

Abstract: quantitative description of a reacting flow, was developed for chemical kinetic modeling of polycyclic aromaticmechanism can properly describe -heptane oxidation chemistry and quantitatively predict polycyclic aromatic

Keywords: phenanthrene     multidimensional computational     sensitivity analysis     polycyclic     mechanism    

Comparison of exogenous degrader-enhanced bioremediation with low-dose persulfate oxidation for polycyclic aromatic

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 11, doi: 10.1007/s11783-023-1733-x

Abstract: Polycyclic aromatic hydrocarbon (PAH)-contaminated soils are usually complex and characterized by a lack

Keywords: Bioaugmentation     Low-dose persulfate oxidation     Polycyclic aromatic hydrocarbon     Remediation    

Multiphase redistribution differences of polycyclic aromatic hydrocarbons (PAHs) between two successive

Rufeng LI,Chenghong FENG,Dongxin WANG,Baohua LI,Zhenyao SHEN

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 2,   Pages 381-389 doi: 10.1007/s11783-015-0817-7

Abstract: This study took polycyclic aromatic hydrocarbons (PAHs) as typical organic contaminants and investigated

Keywords: sediment suspension     PAHs     multiphase distribution     distribution coefficients    

hydrazine-linked covalent organic frameworks coated capillaries for separation and determination of polycyclic aromatic

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 5,   Pages 548-556 doi: 10.1007/s11705-022-2252-1

Abstract: experimental conditions of capillary electrochromatography, baseline separation of two groups of polycyclic aromaticThe spiked recoveries of polycyclic aromatic hydrocarbons in these samples ranged from 90.01% to 111.0%, indicating that the method is reliable and could detect polycyclic aromatic hydrocarbons in natural

Keywords: hydrazine-linked TFPB-DHzDS     in-situ growth method     open-tubular capillary electrochromatography     molecular simulations    

High-precision standard enthalpy of formation for polycyclic aromatic hydrocarbons predicting from general

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 12,   Pages 1743-1750 doi: 10.1007/s11705-022-2184-9

Abstract: high-precision method was developed to calculate accurate standard enthalpies of formation for polycyclic aromaticwas found that the present method can give a good description of enthalpy of formation for polycyclic aromaticof application, this method can be used to investigate the energetic properties of larger polycyclic aromatic

Keywords: standard enthalpy of formation     polycyclic aromatic hydrocarbons     connectivity based hierarchy     high-precision    

Removal of high concentrations of polycyclic aromatic hydrocarbons from contaminated soil by biodiesel

Jinbao WU, Zongqiang GONG, Liyan ZHENG, Yanli YI, Jinghua JIN, Xiaojun LI, Peijun LI

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 4,   Pages 387-394 doi: 10.1007/s11783-010-0269-z

Abstract: Solubilizing experiments were carried out to evaluate the ability of biodiesel to remove polycyclic aromatic

Keywords: polycyclic aromatic hydrocarbons (PAHs)     biodiesel     soil     removal     solubilization    

Sorption of aromatic organophosphate flame retardants on thermally and hydrothermally produced biochars

Ziwen Du, Chuyi Huang, Jiaqi Meng, Yaru Yuan, Ze Yin, Li Feng, Yongze Liu, Liqiu Zhang

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 3, doi: 10.1007/s11783-020-1220-6

Abstract: Aromatic organophosphate flame retardant (OPFR) pollutants and biochars are commonly present and continuallythe sorption process, as suggested by the negative correlation between the sorption capacity of the aromaticOPFRs and the aromatic index (H/C atomic ratios) of biochar.Density functional theory calculations further showed that one benzene ring of aromatic OPFRs has noThis work provides insights into the sorption behaviors and mechanisms of aromatic OPFRs by biochars.

Keywords: Organophosphate flame retardants     Hydrochar     Pyrochar     Adsorption     Emerging contaminants     Biochar    

Title Author Date Type Operation

Enhancing the aromatic selectivity of cyclohexane aromatization by CO2 coupling

Journal Article

Application of probabilistic risk assessment at a coking plant site contaminated by Polycyclic Aromatic

XIA Tianxiang,JIANG Lin,JIA Xiaoyang,ZHONG Maosheng,LIANG Jing

Journal Article

Migration and fate of polycyclic aromatic hydrocarbons in bioretention systems with different media:

Journal Article

Catalytic fast pyrolysis of Kraft lignin with HZSM-5 zeolite for producing aromatic hydrocarbons

Xiangyu LI, Lu SU, Yujue WANG, Yanqing YU, Chengwen WANG, Xiaoliang LI, Zhihua WANG

Journal Article

Enrichment and transfer of polycyclic aromatic hydrocarbons (PAHs) through dust aerosol generation from

Journal Article

Effect of ambient polycyclic aromatic hydrocarbons and nicotine on the structure of Aβ protein

Journal Article

Persistent free radicals in humin under redox conditions and their impact in transforming polycyclic aromatic

Hanzhong Jia, Yafang Shi, Xiaofeng Nie, Song Zhao, Tiecheng Wang, Virender K. Sharma

Journal Article

Isolation of microbe for asymmetric reduction of prochiral aromatic ketone and its reaction characters

YANG Zhonghua, WANG Yu, WANG Guanghui, ZENG Rong, YAO Shanjing

Journal Article

Reduced kinetic mechanism of -heptane oxidation in modeling polycyclic aromatic hydrocarbon formation

ZHONG Beijing, XI Jun

Journal Article

Comparison of exogenous degrader-enhanced bioremediation with low-dose persulfate oxidation for polycyclic aromatic

Journal Article

Multiphase redistribution differences of polycyclic aromatic hydrocarbons (PAHs) between two successive

Rufeng LI,Chenghong FENG,Dongxin WANG,Baohua LI,Zhenyao SHEN

Journal Article

hydrazine-linked covalent organic frameworks coated capillaries for separation and determination of polycyclic aromatic

Journal Article

High-precision standard enthalpy of formation for polycyclic aromatic hydrocarbons predicting from general

Journal Article

Removal of high concentrations of polycyclic aromatic hydrocarbons from contaminated soil by biodiesel

Jinbao WU, Zongqiang GONG, Liyan ZHENG, Yanli YI, Jinghua JIN, Xiaojun LI, Peijun LI

Journal Article

Sorption of aromatic organophosphate flame retardants on thermally and hydrothermally produced biochars

Ziwen Du, Chuyi Huang, Jiaqi Meng, Yaru Yuan, Ze Yin, Li Feng, Yongze Liu, Liqiu Zhang

Journal Article