Hebei Key Laboratory of Groundwater Remediation

Shijiazhuang, China

Hebei Key Laboratory of Groundwater Remediation

Shijiazhuang, China
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Wang Y.,Chinese Academy of Geological Sciences | Wang Y.,Hebei Key Laboratory of Groundwater Remediation | Huang S.,Chinese Academy of Geological Sciences | Huang S.,Hebei Key Laboratory of Groundwater Remediation | And 2 more authors.
Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences | Year: 2017

Hydrate-bearing sediments are the fundamental elements for the study of Earth Critical Zone. To broaden the studying dimensions of groundwater environmental problems, 14C dating, δ13C, iron valance and spectroscopic information of dissolved organic matter (DOM) in Shahu sediment profile were employed to characterize the evolution of sedimentary environment of 30 000 years in Jianghan plain. The values of Zr/Rb, Rb/Sr and δ13C indicate that the climates are much warmer and wetter in the periods of sediments formation in 5 to 7 m and 16 to 18 m than others; the ratio of Fe3+/Fe2+ states that sediments in the two periods is mainly in reductive environment. The evolution of sedimentary environment is generalized into five units including unit of weak bioclastic deposition near-surface, unit of strong deposition in warm and wet period based on the factor analysis and spectroscopic information of DOM. Evolution of Quaternary sedimentary environment suggested by sediment profile at Shahu provides essential data for researches on the regional groundwater environmental problems. © 2017, Editorial Department of Earth Science. All right reserved.


Huang S.,Wuhan University | Huang S.,Chinese Academy of Geological Sciences | Huang S.,Hebei Key Laboratory of Groundwater Remediation | Huang S.,Pacific Northwest National Laboratory | And 6 more authors.
Environmental Science and Pollution Research | Year: 2016

This study is the first to investigate the simultaneous presence of NH4 + and fluorescent organic matter components (FOCs) from a fluvio-lacustrine aquifer in Central Jianghan Plain. Sediment, groundwater, and surface water samples were collected for the sediment organic matter extraction, 3D fluorescence spectroscopy characterization, and/or hydrochemical analysis. NH4 + and dissolved organic carbon was ubiquitous in the groundwater. The fluorescence spectroscopy revealed good relationships between NH4 + and fulvic acid-like components (FALCs) in the groundwater and sediment-extracted organic matter (SEOM) solutions. NH4 + also exhibited significant positive correlation with protein-like component (PLC) (p < 0.001), with the stronger in the SEOM solutions than that in groundwater. Comparisons of spectroscopic indices [e.g., humification index (HIX), biological index (BIX), spectra slope (S275–295), and specific UV absorbance (SUVA254)] between the groundwater and SEOM solutions revealed more labile properties of SEOM. This result indicates that the decreasing NH4 +–FOCs correlations of groundwater relative to sediments may be attributed to microbial degradation. Factor analysis identifies important factors that cause NH4 + occurrence in the groundwater. The accompanying increase of FALC (C1) and NH4–N with the mole concentration of the normalized HCO3 −/(Ca2++Mg2+) and [H+] suggests that couple effects of various biodegradations simultaneously occur in the aquifer, promoting the occurrence of NH4–DOMs. © 2016 Springer-Verlag Berlin Heidelberg


Huang G.,Chinese Academy of Geological Sciences | Huang G.,Hebei Key Laboratory of Groundwater Remediation | Chen Z.,Chinese Academy of Geological Sciences | Sun J.,Chinese Academy of Geological Sciences | And 3 more authors.
Environmental Science and Pollution Research | Year: 2015

Using by sequential extraction procedures to obtain the chemical forms of arsenic in soils can provide useful information for the assessment of arsenic mobility and bioavailability in soils. However, sample pretreatments before the extraction probably have some effects on the fractionation of arsenic in soils. Impact of sample pretreatments (freeze-drying, oven-drying, air-drying, and the fresh soil) on the fractionation of arsenic in anoxic soils was investigated in this study. The results show that there are some differences for arsenic fractions in soils between by drying pretreatments and by the fresh soil, indicating that the redistribution among arsenic fractions in anoxic soils occurs after drying pretreatments. The redistribution of arsenic fractions in anoxic soils is ascribed to the oxidation of organic matter and sulfides, the crystallization of iron (hydr)oxides, the ageing process, and the diffusion of arsenic into micropores. The freeze-drying is the best drying method to minimize the effect on the fractionation of arsenic in anoxic soils, while air-drying is the worst one. Drying pretreatments are not recommended for the fractionation of arsenic in anoxic soils with high concentration of iron. © 2014, Springer-Verlag Berlin Heidelberg.


Huang G.,Chinese Academy of Geological Sciences | Huang G.,Hebei Key Laboratory of Groundwater Remediation | Chen Z.,Chinese Academy of Geological Sciences | Sun J.,Chinese Academy of Geological Sciences | And 2 more authors.
Environmental Forensics | Year: 2016

The objective of this study is to investigate the impacts of anthropogenic and natural processes on the granular aquifer (GA) and the fractured rock aquifer (FRA) in the central region of Guangzhou city. Results indicate that 47.8% and 30.4% of samples in GA are not suitable for drinking and industrial purposes respectively, mainly due to the high concentrations of Fe and NH4 +. In contrast, 48.3% and 41.4% of samples in FRA are not suitable for drinking and industrial purposes respectively, mainly due to the high concentrations of Al, NO3 −, NH4 +, Fe, and Pb. The contributions of Pb, Al, and NO3 − to groundwater quality in GA are lower than those in FRA, while the contributions of Na+, Cl−, SO4 2−, and TDS to groundwater quality in GA and FRA are similar. High concentrations of Pb, Al, Na+, Cl−, SO4 2−, TDS, and NO3 − in groundwater of both GA and FRA are mainly ascribed to human activities such as urbanization and industrialization, while high concentrations of Fe and NH4 + in groundwater of GA are mainly ascribed to natural processes such as reducing environment. More attention should be paid to the protection of groundwater quality in FRA than in GA due to the greater utilization of the groundwater resource in FRA than that in GA. © 2016 Taylor & Francis.


Huang G.,Chinese Academy of Geological Sciences | Huang G.,Hebei Key Laboratory of Groundwater Remediation | Chen Z.,Chinese Academy of Geological Sciences | Wang J.,Chinese Academy of Geological Sciences | And 2 more authors.
Environmental Science and Pollution Research | Year: 2016

The present study focused on the influence of temperature variation on the aging mechanisms of arsenic in soils. The results showed that higher temperature aggravated the decrease of more mobilizable fractions and the increase of less mobilizable or immobilizable fractions in soils over time. During the aging process, the redistribution of both carbonate-bound fraction and specifically sorbed and organic-bound fraction in soils occurred at various temperatures, and the higher temperature accelerated the redistribution of specifically sorbed and organic-bound fraction. The aging processes of arsenic in soils at different temperatures were characterized by several stages, and the aging processes were not complete within 180 days. Arsenic bioaccessibility in soils decreased significantly by the aging, and the decrease was intensified by the higher temperature. In terms of arsenic bioaccessibility, higher temperature accelerated the aging process of arsenic in soils remarkably. © 2015, Springer-Verlag Berlin Heidelberg.


Han Z.,Northumbria University | Han Z.,Chinese Academy of Geological Sciences | Han Z.,Hebei Key Laboratory of Groundwater Remediation | Sani B.,Northumbria University | And 7 more authors.
Water Research | Year: 2015

This paper discusses the sorbent properties of magnetic activated carbons and biochars produced by wet impregnation with iron oxides. The sorbents had magnetic susceptibilities consistent with theoretical predictions for carbon-magnetite composites. The high BET surface areas of the activated carbons were preserved in the synthesis, and enhanced for one low surface area biochar by dissolving carbonates. Magnetization decreased the point of zero charge. Organic compound sorption correlated strongly with BET surface areas for the pristine and magnetized materials, while metal cation sorption did not show such a correlation. Strong sorption of the hydrophobic organic contaminant phenanthrene to the activated carbon or biochar surfaces was maintained following magnetite impregnation, while phenol sorption was diminished, probably due to enhanced carbon oxidation. Copper, zinc and lead sorption to the activated carbons and biochars was unchanged or slightly enhanced by the magnetization, and iron oxides also contributed to the composite metal sorption capacity. While a magnetic biochar with 219±3.7m2/g surface area nearly reached the very strong organic pollutant binding capacity of the two magnetic activated carbons, a magnetic biochar with 68±2.8m2/g surface area was the best metal sorbent. Magnetic biochars thus hold promise as more sustainable alternatives to coal-derived magnetic activated carbons. r nearly reached the strong organic pollutant sorption capacity of activated carbon. © 2014 Elsevier Ltd.


Huang G.,Chinese Academy of Geological Sciences | Huang G.,Hebei Key Laboratory of Groundwater Remediation | Chen Z.,Chinese Academy of Geological Sciences | Zhang Y.,Chinese Academy of Geological Sciences | And 3 more authors.
Geoderma | Year: 2016

Redox conditions and arsenic (As) loads may affect the aging mechanisms of As in soils. A batch experiment of one wastewater-irrigated soil under four different conditions was performed to investigate the impact of redox conditions and As loads on the aging mechanisms of As in soils in this study. The results showed that the aerobic condition substantially decreased the more labile fractions and increased the less mobilizable or immobilizable fractions in soils over time, which was likely due to the oxidation of As(III) to As(V) and the decomposition of organic matter. The redistribution of the strongly adsorbed and organically bound fraction (F4) occurred in all soils during the aging process, and both low As load and aerobic conditions accelerated this redistribution. The aging processes of As were characterized by three stages in various soils except the low As load soil with two stages within 180 days: The transformations of As fractions were from three former fractions to three later ones in all soils in the first stage (0 day-10 days), while the main transformations after 10 days were from F4 to bound to Fe and Mn/Al oxides fraction (F5) and from water soluble fraction (F1) to F5 in soils with low and high As loads, respectively; In contrast, the main transformations in the second stage were from F1 to F4 and from F1 to F5 in soils at low oxygen and aerobic conditions, respectively, and were from F4 to F5 in the third stage in both redox conditions. The bioaccessibility of As in the low As load soil decreased markedly from approximately 40% down to <. 10% due to the aging and more remarkably from >. 70% down to <. 20% in three other soils. Both high As load and low oxygen conditions preserved higher bioaccessibility of As in soils after long aging process. In terms of As bioaccessibility, high As load and aerobic condition prolonged the aging process of arsenic in soils. © 2016 Elsevier B.V.


Lu X.,Chinese Academy of Geological Sciences | Lu X.,Hebei Key Laboratory of Groundwater Remediation | Sun J.,Chinese Academy of Geological Sciences | Liu J.,Chinese Academy of Geological Sciences | And 2 more authors.
Geological Bulletin of China | Year: 2015

Ten years' pollution risk of a petrochemical contaminated site on its downstream groundwater source in a provincial capital city of northwest China was predicted on the basis of groundwater flow and solute coupling model and by using GMS software. Several realistic groundwater pumping scenarios were used, but the natural degradation of petroleum hydrocarbon was not considered. Thus all the predicted risks were exaggerated to some extent. According to the modeling results, the petrochemical hydrocarbon pollution plume can not be transported across the border of the groundwater source. This is due to the special hydrogeological structure of the study area. Only thin layers of Quaternary aquifer are distributed in the petrochemically contaminated site, while the groundwater source is in the rifted-basin downstream area. Under this condition, the recharge of groundwater from the petrochemically contaminated site to the groundwater source is very limited, and the main recharge to the groundwater source is from the Yellow River. The drag of the contamination plume by groundwater pumping in the groundwater field is very weak. Taking long-term interest into consideration, the authors hold that an old Yellow River channel called 'south channel' should be restored to stop the intrusion of the pollution plume, because water in this channel flows between the petrochemically contaminated site and the groundwater source, and hence the channel can create a hydraulic barrier blocking the intrusion of the pollution plume and at the same time enhance the recharge to the groundwater field. ©, 2015, Science Press. All right reserved.


Han Z.,Northumbria University | Han Z.,Chinese Academy of Geological Sciences | Han Z.,Hebei Key Laboratory of Groundwater Remediation | Sani B.,Northumbria University | And 5 more authors.
Journal of Hazardous Materials | Year: 2015

Addition of activated carbon (AC) or biochar (BC) to sediment to reduce the chemical and biological availability of organic contaminants is a promising in-situ remediation technology. But concerns about leaving the adsorbed pollutants in place motivate research into sorbent recovery methods. This study explores the use of magnetic sorbents. A coal-based magnetic activated carbon (MAC) was identified as the strongest of four AC and BC derived magnetic sorbents for polycyclic aromatic hydrocarbons (PAHs) remediation. An 8.1% MAC amendment (w/w, equal to 5% AC content) was found to be as effective as 5% (w/w) pristine AC in reducing aqueous PAHs within three months by 98%. MAC recovery from sediment after three months was 77%, and incomplete MAC recovery had both, positive and negative effects. A slight rebound of aqueous PAH concentrations was observed following the MAC recovery, but aqueous PAH concentrations then dropped again after six months, likely due to the presence of the 23% unrecovered MAC. On the other hand, the 77% recovery of the 8.1% MAC dose was insufficient to reduce ecotoxic effects of fine grained AC or MAC amendment on the egestion rate, growth and reproduction of the AC sensitive species Lumbriculus variegatus. © 2014 Elsevier B.V.


Huang S.-B.,Chinese Academy of Geological Sciences | Huang S.-B.,Hebei Key Laboratory of Groundwater Remediation | Huang S.-B.,Wuhan University | Wang Y.-X.,Wuhan University | And 6 more authors.
Science of the Total Environment | Year: 2015

The sources of dissolved organic matter (DOM) in groundwater are important to groundwater chemistry and quality. This study examined similarities in the nature of DOM and investigated the link between groundwater DOM (GDOM) and sedimentary organic matter (SOM) from a lacustrine-alluvial aquifer at Jianghan Plain. Sediment, groundwater and surface water samples were employed for SOM extraction, optical and/or chemical characterization, and subsequent fluorescence excitation-emission matrix (EEM) and parallel factor analyses (PARAFAC). Spectroscopic properties of bulk DOM pools showed that indices indicative of GDOM (e.g., biological source properties, humification level, aromaticity and molecule mobility) varied within the ranges of those of two extracted end-members of SOM: humic-like materials and microbe-associated materials. The coexistence of PARAFAC compositions and the sustaining internal relationship between GDOM and extracted SOM indicate a similar source. The results from principal component analyses with selected spectroscopic indices showed that GDOM exhibited a transition trend regarding its nature: from refractory high-humification DOM to intermediate humification DOM and then to microbe-associated DOM, with decreasing molecular weight. Correlations of spectroscopic indices with physicochemical parameters of the groundwater suggested that GDOM was released from SOM and was modified by microbial diagenetic processes. The current study demonstrated the associations of GDOM with SOM from a spectroscopic viewpoint and provided new evidence supporting SOM as the source of GDOM. © 2015 Elsevier B.V.

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