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Distribution, enrichment mechanism and risk assessment for fluoride in groundwater: a case study of Mihe-Weihe

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 6, doi: 10.1007/s11783-023-1670-8

Abstract:

● High fluorine is mainly HCO3·Cl-Na and HCO3-Na type.

Keywords： the Mihe-Weihe River Basin     Distribution characteristics of fluorine     Factors influencing fluoride     Enrichment    

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Water Diversion is Not to Blame for Phosphorus Enrichment in Taihu Lake

Zhiyuan Wang,Qiuwen Chen,Jianyun Zhang,Hanlu Yan,

Engineering doi: 10.1016/j.eng.2023.07.007

Abstract: The Water Diversion Project from the Yangtze River to Taihu Lake (WDYT) has been widely recognized as an urgent and effective engineering measure to increase water resources, ameliorate the hydrodynamics and water quality conditions, and safeguard the water supply of Taihu Basin. However, some previous studies claimed that WDYT has brought in allochthonous nutrients and should take responsibility for the dramatic increase in phosphorus loading of Taihu Lake in recent years, because Yangtze River has a higher average phosphorus concentration than Taihu Lake. To ensure correct public understanding and provide a critical response to the misconception about the source of phosphorus loading, we quantified contribution of water diversion from the Yangtze River to phosphorus loadings of Taihu Lake over the past twenty years. We reveal that WDYT only diverted 4.3% annually of total phosphorus input of Taihu Lake in the last decade and should not be responsible for the increase in phosphorus concentration and loading in Taihu Lake. We conclude that phosphorus input from the Huxi Region contribute 78% of phosphorus input of Taihu Lake and should be primarily responsible for the high phosphorus concentration of Taihu Lake. Our findings have provided constructive guidance for water resource management of Taihu Basin and phosphorus load control of the second stage of WDYT.
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Experimental investigation on possibility of oxygen enrichment by using gradient magnetic fields

CAI Jun, WANG Li, TONG Lige, SUN Shufeng, WU Ping

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 3,   Pages 271-276 doi: 10.1007/s11705-007-0049-x

Abstract: method that uses the interception effect of gradient magnetic field on oxygen molecules to realize enrichmentThus, continuous oxygen enrichment is realized.The enrichment degree of oxygen reaches 0.65% when the inlet and outlet air flows are 40 mL/min and 20When the gas temperature rises to 343 K, the enrichment degree drops to 0.32%; and when the maximal productdegree than other oxygen-enrichment methods using magnetic separation.
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Transcriptome analysis of wheat grain using RNA-Seq

Liu WEI,Zhihui WU,Yufeng ZHANG,Dandan GUO,Yuzhou XU,Weixia CHEN,Haiying ZHOU,Mingshan YOU,Baoyun LI

Frontiers of Agricultural Science and Engineering 2014, Volume 1, Issue 3,   Pages 214-222 doi: 10.15302/J-FASE-2014024

Abstract: Transcriptome analysis is a powerful approach to research grain traits and elucidate their genetic regulationThe analysis of the 61393 unigenes involved in the biological processes of the grain showed that thereGene ontology enrichment and the Kyoto Encyclopedia of Genes and Genomes pathway enrichment analysis

Keywords： transcriptome analysis     wheat grain     differentially expressed genes     enrichment analysis    

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Multistage analysis method for detection of effective herb prescription from clinical data

Kuo Yang, Runshun Zhang, Liyun He, Yubing Li, Wenwen Liu, Changhe Yu, Yanhong Zhang, Xinlong Li, Yan Liu, Weiming Xu, Xuezhong Zhou, Baoyan Liu

Frontiers of Medicine 2018, Volume 12, Issue 2,   Pages 206-217 doi: 10.1007/s11684-017-0525-8

Abstract: In this study, a multistage analysis method that integrates propensity case matching, complex networkanalysis, and herb set enrichment analysis was proposed to identify effective herb prescriptions forThen, core network extraction and herb set enrichment were combined to detect core effective herb prescriptions

Keywords： effective prescription detection     herb set enrichment analysis     core network extraction     insomnia     personalized    

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the effect of nitrogen on mixed culture polyhydroxyalkanoate production toward high organic loading enrichment

Zhiqiang Chen, Lizhi Zhao, Ye Ji, Qinxue Wen, Long Huang

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 4, doi: 10.1007/s11783-019-1135-2

Abstract:

Enrichment history of PHA accumulating culture

Enrichment strategy toward higher PHA accumulation

Keywords： Polyhydroxyalkanoate (PHA)     Organic loading rate     Nitrogen content     Biomass growth     Enrichment history    

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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)    

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Mercury enrichment in

Chunhao Dai, Pufeng Qin, Zhangwei Wang, Jian Chen, Xianshan Zhang, Si Luo

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 1, doi: 10.1007/s11783-017-0892-z

Abstract: Mercury enrichment in response to elevated atmospheric mercury concentrations in the organs of rape (Mercury enrichment in response to elevated atmospheric mercury concentrations in the organs of rape (

Keywords： Open top chamber     Gaseous elemental mercury (GEM)     Soil Mercury     Brassica napus    

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Shale gas enrichment factors and the selection and evaluation of the core area

Wang Shejiao,Yang Tao,Zhang Guosheng,Li Denghua,Chen Xiaoming

Strategic Study of CAE 2012, Volume 14, Issue 6,   Pages 94-100

Abstract: Based on the analysis of shale gas reservoir characteristics and the enrichment factors we discuss the

Keywords： core area     selection and evaluation     enrichment factors     marine shale     shale gas    

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Effective enrichment of Zn from smelting wastewater via an integrated Fe coagulation and hematite precipitation

Zhan Qu, Ting Su, Yu Chen, Xue Lin, Yang Yu, Suiyi Zhu, Xinfeng Xie, Mingxin Huo

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 6, doi: 10.1007/s11783-019-1178-4

Abstract: 98.5% Zn was enriched from Zn-bearing smelting wastewater. 99.5% Fe was hydrothermally precipitated into hematite nanoparticles. Highly purified hematite nanoparticles were obtained. The residual Zn was 2169 mg/L, 290 times of that in smelting wastewater. Coagulation is commonly applied to treat Zn-bearing wastewater from smelting industries (smelting wastewater), and thus the Zn-bearing sludge was considerably produced, which should be solidified before safety disposal. Herein, we demonstrated a novel approach to recycle Zn effectively from smelting wastewater via an integrated Fe coagulation and hematite precipitation method. First, smelting wastewater was coagulated by adding ferric chloride to generate Fe/Zn-bearing sludge (sludge for short). Secondly, the sludge was dissolved to generate an acid solution containing 2.2 g/L of Zn and 39.2 g/L of Fe. Thirdly, the Fe/Zn-bearing solution was hydrothermally treated, and 89% of Fe was eliminated to highly purified hematite block, whereas the percentage of Zn lost was below 1.1%. Finally, the hematite precipitates were collected, and the supernatant was hydrothermally treated again with the addition of glucose. When the molar ratio of glucose to Fe in the supernatant was 1.5, over 99.5% of Fe was precipitated in hematite nanoparticles with a diameter of 10–100 nm, and the residual Fe was 21.5 mg/L. The loss of Zn was below 0.4%, and the residual Zn in the solution was 2169 mg/L, 290 times of that in the smelting wastewater. The major mechanism for Fe removal was the hydrolysis of ferric nitrate into hematite, which was promoted by nitrate consumption in glucose oxidation. This paper is the first report of an environment-friendly method for enriching Zn without generating any waste.

Keywords： Smelting wastewater     Hydrothermal     Hematite precipitation     Heavy metals    

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Enrichment of CO from syngas with Cu(I)Y adsorbent by five-bed VPSA

Shuna LI, Huawei YANG, Donghui ZHANG

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 4,   Pages 472-481 doi: 10.1007/s11705-013-1351-4

Abstract: Cu(I)Y adsorbent was prepared by reduction of Cu(II)Y which was prepared by ion exchange between the NaY zeolite and a solution of Cu(II) chloride. The dynamic adsorption capacity of Cu(I)Y for CO was calculated by adsorption breakthrough curve measured on a fixed bed at 30°C and 0.006 MPa (g) of CO partial pressure. The calculated CO adsorption capacity was 2.14 mmol/g, 37.5 times as much as that of NaY zeolite. The adsorption breakthrough curve experiment was also simulated with Aspen Adsorption software and the results were approximately consistent with experimental results. Then a five-bed VPSA process for separating CO from syngas on this adsorbent was dynamically simulated with Aspen Adsorption software with the adsorption pressure of 0.68 MPa (g) and the desorption pressure of -0.075 MPa (g). The results showed that CO was enriched from 32.3% to 95.16%–98.12%, and its recovery was 88.47%–99.44%.

Keywords： Cu(I)Y adsorbent     breakthrough curve     desorption     VPSA     simulation    

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Key issues in development of offshore natural gas hydrate

Shouwei ZHOU, Qingping LI, Xin LV, Qiang FU, Junlong ZHU

Frontiers in Energy 2020, Volume 14, Issue 3,   Pages 433-442 doi: 10.1007/s11708-020-0684-1

Abstract: The study of the description and quantitative characterization of abundance in hydrate enrichment zone

Keywords： exploitation offshore     diagenetic and non-diagenetic hydrate     solid-state fluidization method     dessert in enrichment    

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tower bipolar electro-flocculation including the removal of phosphorus, turbidity, sulfion, and oxygen enrichment

Huan He, Qinjin Yu, Chaochao Lai, Chen Zhang, Muhan Liu, Bin Huang, Hongping Pu, Xuejun Pan

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 2, doi: 10.1007/s11783-020-1310-5

Abstract: . • An aluminum bipolar electrode gave the best oxygen enrichment and pollutant removal. • Changes of

Keywords： Black-odorous water     Bipolar electrodes     Flocculation     Floatation     Oxygen enrichment     Turbidity    

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Fundamental Research on Vanadium Recovering from V-bearingSteelmaking Slag

Dong Yuanchi,Wu Xingrong,Yu Liang,Li Liaosha

Strategic Study of CAE 2007, Volume 9, Issue 1,   Pages 63-68

Abstract:

The enrichment of vanadium and crystallization and growth of V-concentrating

Keywords： V-bearing steel slag     enrichment     V-concentrating phase     crystal growth     solid solution    

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Relationship between heavy metal concentrations of herbaceous plants and soils at four Pb-Zn mining sites in Yunnan, China

Yuan LI , Yanqun ZU , Qixian FANG , Zhaohua GAO , Christian SCHVARTZ ,

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 3,   Pages 325-333 doi: 10.1007/s11783-009-0024-5

Abstract: Enrichment coefficients of Pb, Cd, and Zn were greater than 1 in 2, 3, and 9 herbaceous plant samples

Keywords： Pb     Cd     Zn     herbaceous plants     Pb-Zn mining areas     enrichment coefficient     translocation factor    

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Title Author Date Type Operation

Distribution, enrichment mechanism and risk assessment for fluoride in groundwater: a case study of Mihe-Weihe

Journal Article

Water Diversion is Not to Blame for Phosphorus Enrichment in Taihu Lake

Zhiyuan Wang,Qiuwen Chen,Jianyun Zhang,Hanlu Yan,

Journal Article

Experimental investigation on possibility of oxygen enrichment by using gradient magnetic fields

CAI Jun, WANG Li, TONG Lige, SUN Shufeng, WU Ping

Journal Article

Transcriptome analysis of wheat grain using RNA-Seq

Liu WEI,Zhihui WU,Yufeng ZHANG,Dandan GUO,Yuzhou XU,Weixia CHEN,Haiying ZHOU,Mingshan YOU,Baoyun LI

Journal Article

Multistage analysis method for detection of effective herb prescription from clinical data

Kuo Yang, Runshun Zhang, Liyun He, Yubing Li, Wenwen Liu, Changhe Yu, Yanhong Zhang, Xinlong Li, Yan Liu, Weiming Xu, Xuezhong Zhou, Baoyan Liu

Journal Article

the effect of nitrogen on mixed culture polyhydroxyalkanoate production toward high organic loading enrichment

Zhiqiang Chen, Lizhi Zhao, Ye Ji, Qinxue Wen, Long Huang

Journal Article

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

Journal Article

Mercury enrichment in

Chunhao Dai, Pufeng Qin, Zhangwei Wang, Jian Chen, Xianshan Zhang, Si Luo

Journal Article

Shale gas enrichment factors and the selection and evaluation of the core area

Wang Shejiao,Yang Tao,Zhang Guosheng,Li Denghua,Chen Xiaoming

Journal Article

Effective enrichment of Zn from smelting wastewater via an integrated Fe coagulation and hematite precipitation

Zhan Qu, Ting Su, Yu Chen, Xue Lin, Yang Yu, Suiyi Zhu, Xinfeng Xie, Mingxin Huo

Journal Article

Enrichment of CO from syngas with Cu(I)Y adsorbent by five-bed VPSA

Shuna LI, Huawei YANG, Donghui ZHANG

Journal Article

Key issues in development of offshore natural gas hydrate

Shouwei ZHOU, Qingping LI, Xin LV, Qiang FU, Junlong ZHU

Journal Article

tower bipolar electro-flocculation including the removal of phosphorus, turbidity, sulfion, and oxygen enrichment

Huan He, Qinjin Yu, Chaochao Lai, Chen Zhang, Muhan Liu, Bin Huang, Hongping Pu, Xuejun Pan

Journal Article

Fundamental Research on Vanadium Recovering from V-bearingSteelmaking Slag

Dong Yuanchi,Wu Xingrong,Yu Liang,Li Liaosha

Journal Article

Relationship between heavy metal concentrations of herbaceous plants and soils at four Pb-Zn mining sites in Yunnan, China

Yuan LI , Yanqun ZU , Qixian FANG , Zhaohua GAO , Christian SCHVARTZ ,

Journal Article