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Potential sources of unintentionally produced PCB, HCB, and PeCBz in China: A preliminary overview

Xiaotu Liu, Heidelore Fiedler, Wenwen Gong, Bin Wang, Gang Yu

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 6, doi: 10.1007/s11783-018-1036-9

Abstract:

A preliminary analysis of potential sources for unintentionally produced

Keywords： Unintentionally produced POPs     Polychlorinated biphenyls     Hexachlorobenzene     Pentachlorobenzene     sources    

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Higher heating value prediction of torrefaction char produced from non-woody biomass

Nitipong SOPONPONGPIPAT,Dussadeeporn SITTIKUL,Unchana SAE-UENG

Frontiers in Energy 2015, Volume 9, Issue 4,   Pages 461-471 doi: 10.1007/s11708-015-0377-3

Abstract: The higher heating value of five types of non-woody biomass and their torrefaction char was predicted and compared with the experimental data obtained in this paper. The correlation proposed in this paper and the ones suggested by previous researches were used for prediction. For prediction using proximate analysis data, the mass fraction of fixed carbon and volatile matter had a strong effect on the higher heating value prediction of torrefaction char of non-woody biomass. The high ash fraction found in torrefied char resulted in a decrease in prediction accuracy. However, the prediction could be improved by taking into account the effect of ash fraction. The correlation developed in this paper gave a better prediction than the ones suggested by previous researches, and had an absolute average error (AAE) of 2.74% and an absolute bias error (ABE) of 0.52%. For prediction using elemental analysis data, the mass fraction of carbon, hydrogen, and oxygen had a strong effect on the higher heating value, while no relationship between the higher heating value and mass fractions of nitrogen and sulfur was discovered. The best correlation gave an AAE of 2.28% and an ABE of 1.36%.

Keywords： higher heating value     correlation     biomass     proximate analysis     ultimate analysis    

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ASSESSMENT OF HEAVY METALS IN HYDROCHAR PRODUCED BY HYDROTHERMAL CARBONIZATION OF DAIRY MANURE

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 3,   Pages 437-447 doi: 10.15302/J-FASE-2023507

Abstract:

● Content of heavy metals in hydrochar varies considerably, from 50% to 100%.

Keywords： heavy metals     dairy manure     hydrochar     hydrothermal carbonization     waste management    

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Addressing the environmental risk of persistent organic pollutants in China

Bin WANG, Jun HUANG, Shubo DENG, Xiaoling YANG, Gang YU

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 1,   Pages 2-16 doi: 10.1007/s11783-011-0370-y

Abstract: The Stockholm Convention on persistent organic pollutants (POPs) was adopted in 2001.and inventory study of POPs, monitoring and modeling of POPs pollution and exposure, and environmentalrisk assessment and modeling of POPs.The study on the effect of POPs mixtures is in its infancy and currently POPs are usually assessed fromof coupled dynamics between climate processes and POPs.

Keywords： persistent organic pollutant (POPs)     environmental risk assessment     inventory     environmental monitoring     fugacity model     emerging POPs    

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Emerging contaminant control: From science to action

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 6, doi: 10.1007/s11783-022-1559-y

Abstract: Since the concept of emerging contaminants (ECs) was first proposed in 2001, the global scientific research of ECs has developed rapidly. In the past decades, great progress has been achieved in the scientific research of ECs in China, including the establishment of EC analysis method system, the evaluation of the pollution status, pollution characteristics and environmental risk of ECs in typical regions of China, and establishment of EC control technology system. Continuous progress in scientific research of ECs promoted China’s action on EC control. It is planned that the environmental risk of ECs will be generally controlled by 2035 in China. Priority ECs should be screened for environmental management. Although great efforts have been made, the EC control in China still faces tremendous challenges. It is necessary to bridge the gap between scientific research and decision-making management. Based on the science and technology study, various measures such as engineering, policy management and public participation should be combinedly adopted for EC control.

Keywords： Emerging contaminants     Priority pollutants     PPCPs     POPs     Control policy    

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Formation mechanism of solid product produced from co-pyrolysis of Pingdingshan lean coal with organic

Xiangchun Liu, Jun Hu, Ruilun Xie, Bin Fang, Ping Cui

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 2,   Pages 363-372 doi: 10.1007/s11705-020-1944-7

Abstract: of the oil shale were trapped by hydrogen-poor macromolecular radicals of the intermediate metaplast produced

Keywords： co-pyrolysis     coal     oil shale     electron spin resonance     mechanism    

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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: TPhP showed faster and higher sorption on biochars than TPPO. Pyrochars had higher sorption capacity for TPPO than hydrochar. Hydrophobic interactions dominated TPhP sorption by biochars. The π-π EDA and electrostatic interactions are involved in sorption. Aromatic organophosphate flame retardant (OPFR) pollutants and biochars are commonly present and continually released into soils due to their increasingly wide applications. In this study, for the first time, the sorption of OPFRs on biochars was investigated. Although triphenyl phosphate (TPhP) and triphenylphosphine oxide (TPPO) have similar molecular structures and sizes, TPhP exhibited much faster and higher sorption than TPPO due to its stronger hydrophobicity, suggesting the dominant role of hydrophobic interactions in TPhP sorption. The π-π electron donor–acceptor (EDA) interactions also contributed to the sorption process, as suggested by the negative correlation between the sorption capacity of the aromatic OPFRs and the aromatic index (H/C atomic ratios) of biochar. Density functional theory calculations further showed that one benzene ring of aromatic OPFRs has no electrons, which may interact with biochar via π-π EDA interactions. The electrostatic attraction between the protonated P = O in OPFRs and the negatively charged biochar was found to occur at pH below 7. This work provides insights into the sorption behaviors and mechanisms of aromatic OPFRs by biochars.

Keywords： Organophosphate flame retardants     Hydrochar     Pyrochar     Adsorption     Emerging contaminants     Biochar    

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Hydrotreating of light gas oil using a NiMo catalyst supported on activated carbon produced from fluid

N. Rambabu,Sandeep Badoga,Kapil K. Soni,A.K. Dalai,J. Adjaye

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 2,   Pages 161-170 doi: 10.1007/s11705-014-1430-1

Abstract: The produced NAFSAC had an inert nature, exhibited the sink effect and few metal support interactions

Keywords： activated carbon     fluid petroleum coke     NiMo catalyst     hydrotreating     light gas oil    

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Synthesis of zeolite Na-P1 from coal fly ash produced by gasification and its application as adsorbent

Yixin Zhang, Lu Zhou, Liqing Chen, Yang Guo, Fanhui Guo, Jianjun Wu, Baiqian Dai

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 3,   Pages 518-527 doi: 10.1007/s11705-020-1926-9

Abstract: The coal fly ash produced by gasification is estimated to be over 80 million ton per year in China byIn this paper, the coal fly ash produced by gasification was at first analyzed and then applied to synthesize

Keywords： coal fly ash     gasification     zeolite     Na-P1     chromium(VI)    

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Pyrolysis of WEEE plastics using catalysts produced from fly ash of coal gasification

Marika Benedetti, Lorenzo Cafiero, Doina De Angelis, Alessandro Dell’Era, Mauro Pasquali, Stefano Stendardo, Riccardo Tuffi, Stefano Vecchio Ciprioti

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 5, doi: 10.1007/s11783-017-0998-3

Abstract: Catalytic pyrolysis of thermoplastics extracted from waste electrical and electronic equipment (WEEE) was investigated using various fly ash-derived catalysts. The catalysts were prepared from fly ash by a simple method that basically includes a mechanical treatment followed by an acid or a basic activation. The synthesized catalysts were characterized using various analytical techniques. The results showed that not treated fly ash (FA) is characterized by good crystallinity, which in turn is lowered by mechanical and chemical treatment (fly ash after mechanical and acid activation, FAMA) and suppressed almost entirely down to let fly ash become completely amorphous (fly ash after mechanical and basic activation FAMB). Simultaneously, the surface area resulted increased. Subsequently, FA, FAMB and FAMA were used in the pyrolysis of a WEEE plastic sample at 400°C and their performance were compared with thermal pyrolysis at the same temperature. The catalysts principally improve the light oil yield: from 59wt.% with thermal pyrolysis to 83 wt.% using FAMB. The formation of styrene in the oil is also increased: from 243 mg/g with thermal pyrolysis to 453 mg/g using FAMB. As a result, FAMB proved to be the best catalyst, thus producing also the lowest and the highest amount of char and gas, respectively.

Keywords： Waste electrical and electronic equipment (WEEE) plastic mixture     Pyrolysis     Catalyst     Fly ash     Oil    

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Study of engine performance, emission and combustion characteristics fueled with diesel-like fuel produced

V. Edwin Geo, Ankit Sonthalia, Fethi Aloui, Femilda Josephin J. S.

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 4, doi: 10.1007/s11783-018-1063-6

Abstract:

To derive liquid fuel from waste engine oil and plastics thorough pyrolysis process

To make equal blend of waste engine oil and plastics with diesel fuel

To find the suitability of fuel from waste in diesel engine through performance, emission and combustion characteristics

Keywords： Waste engine oil     Waste plastic oil     Diesel fuel     Pyrolysis     Compression ignition engine    

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Dynamic fate modeling of γ-hexachlorocyclohexane in the lower reaches of the Liao River

LIU Zhenyu, YANG Fenglin, QUAN Xie, ZHANG Xiaohong

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 2,   Pages 166-171 doi: 10.1007/s11783-007-0029-x

Abstract: dependent on temperature is parameterized to describe the long-term fate of persistent organic pollutants (POPsIt is believed that the model is appropriate for simulating the long term fate of POPs in the Liao River

Keywords： coefficient     POPs     temperature     sediment increase     dependent    

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Endosulfan in the Chinese environment: monitoring and modeling

Hongliang JIA, Liyan LIU, Yeqing SUN, Daoji CAI, Jianxin HU, Nanqi REN, Yifan LI

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 1,   Pages 32-44 doi: 10.1007/s11783-011-0375-6

Abstract: reviews the usage and emissions of endosulfan, the newest member of the persistent organic pollutants (POPs

Keywords： endosulfan     monitoring     modeling     inventories     persistent organic pollutants     persistent organic pollutants (POPs    

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Analysis on the depositing process of the solid particulates produced by aerosol fire suppressants under

Chen Changkun

Strategic Study of CAE 2010, Volume 12, Issue 1,   Pages 48-51

Abstract: unsteady analysis was conducted on the space distribution and depositing process of the solid particulates produced

Keywords： solid particulates     aerosol fire suppressant     depositing process    

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Dynamic modeling and damage analysis of debris cloud fragments produced by hypervelocity impacts via Research Article

Ru ZENG, Yan SONG, Weizhen LV,zengru_neo@163.com,sonya@usst.edu.cn,hala_lwz@163.com

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 4,   Pages 555-570 doi: 10.1631/FITEE.2100049

Abstract: It is always a challenging task to model the trajectory and make an efficient of produced by (HVI)

Keywords： Debris clouds     Hypervelocity impact     Image processing     Damage estimation    

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Title Author Date Type Operation

Potential sources of unintentionally produced PCB, HCB, and PeCBz in China: A preliminary overview

Xiaotu Liu, Heidelore Fiedler, Wenwen Gong, Bin Wang, Gang Yu

Journal Article

Higher heating value prediction of torrefaction char produced from non-woody biomass

Nitipong SOPONPONGPIPAT,Dussadeeporn SITTIKUL,Unchana SAE-UENG

Journal Article

ASSESSMENT OF HEAVY METALS IN HYDROCHAR PRODUCED BY HYDROTHERMAL CARBONIZATION OF DAIRY MANURE

Journal Article

Addressing the environmental risk of persistent organic pollutants in China

Bin WANG, Jun HUANG, Shubo DENG, Xiaoling YANG, Gang YU

Journal Article

Emerging contaminant control: From science to action

Journal Article

Formation mechanism of solid product produced from co-pyrolysis of Pingdingshan lean coal with organic

Xiangchun Liu, Jun Hu, Ruilun Xie, Bin Fang, Ping Cui

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

Hydrotreating of light gas oil using a NiMo catalyst supported on activated carbon produced from fluid

N. Rambabu,Sandeep Badoga,Kapil K. Soni,A.K. Dalai,J. Adjaye

Journal Article

Synthesis of zeolite Na-P1 from coal fly ash produced by gasification and its application as adsorbent

Yixin Zhang, Lu Zhou, Liqing Chen, Yang Guo, Fanhui Guo, Jianjun Wu, Baiqian Dai

Journal Article

Pyrolysis of WEEE plastics using catalysts produced from fly ash of coal gasification

Marika Benedetti, Lorenzo Cafiero, Doina De Angelis, Alessandro Dell’Era, Mauro Pasquali, Stefano Stendardo, Riccardo Tuffi, Stefano Vecchio Ciprioti

Journal Article

Study of engine performance, emission and combustion characteristics fueled with diesel-like fuel produced

V. Edwin Geo, Ankit Sonthalia, Fethi Aloui, Femilda Josephin J. S.

Journal Article

Dynamic fate modeling of γ-hexachlorocyclohexane in the lower reaches of the Liao River

LIU Zhenyu, YANG Fenglin, QUAN Xie, ZHANG Xiaohong

Journal Article

Endosulfan in the Chinese environment: monitoring and modeling

Hongliang JIA, Liyan LIU, Yeqing SUN, Daoji CAI, Jianxin HU, Nanqi REN, Yifan LI

Journal Article

Analysis on the depositing process of the solid particulates produced by aerosol fire suppressants under

Chen Changkun

Journal Article

Dynamic modeling and damage analysis of debris cloud fragments produced by hypervelocity impacts via

Ru ZENG, Yan SONG, Weizhen LV,zengru_neo@163.com,sonya@usst.edu.cn,hala_lwz@163.com

Journal Article