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Xiaomin Dou

Bio: Xiaomin Dou is an academic researcher from Beijing Forestry University. The author has contributed to research in topics: Adsorption & Fluoride. The author has an hindex of 31, co-authored 81 publications receiving 4259 citations. Previous affiliations of Xiaomin Dou include Georgia Institute of Technology & Chinese Academy of Sciences.


Papers
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TL;DR: Biochars developed from soybean stover and peanut shells and pyrolysis temperature influencing the BC properties was a critical factor to assess the removal efficiency of TCE from water.

959 citations

Journal ArticleDOI
Yu Zhang1, Min Yang1, Xiaomin Dou1, Hong He1, Dongsheng Wang1 
TL;DR: An Fe-Ce bimetal adsorbent was investigated with X-ray powder diffraction, transmission electron micrograph, Fourier transform infrared spectra, andXPS methods for a better understanding of the effect of surface properties on arsenate (As(V), proving that the adsorption of As(V) by Fe- CeO8 is mainly realized through the mechanism of quantitative ligand exchange.
Abstract: An Fe−Ce bimetal adsorbent was investigated with X-ray powder diffraction (XRD), transmission electron micrograph (TEM), Fourier transform infrared spectra (FTIR), and X-ray photoelectron spectroscopy (XPS) methods for a better understanding of the effect of surface properties on arsenate (As(V)) adsorption. In the adsorption test, the bimetal oxide adsorbent showed a significantly higher As(V) adsorption capacity than the referenced Ce and Fe oxides (CeO2 and Fe3O4) prepared by the same procedure and some other arsenate adsorbents reported recently. XRD measurement of the adsorbent demonstrated that the phase of magnetite (Fe3O4) disappears gradually with the increasing dosage of Ce4+ ions until reaching a molar ratio of Ce4+ to Fe3+ and Fe2+ of 0.08:0.2:0.1 (Fe−Ce08 refers to the adsorbent prepared at this ratio), and the phase of CeO2 begins to appear following a further increase of the Ce dose. Combined with the results of TEM observation, it was assumed that a solid solution of Fe−Ce is formed follow...

482 citations

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TL;DR: The adsorption isotherm could be better described by the two-site Langmuir model than the one-site model, suggesting the existence of two types of active sites on the adsorbent surface.

286 citations

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TL;DR: In this paper, the authors investigated the defluoridation performance and adsorption mechanism of a high capacity hydrous zirconium oxide adsorbent and showed that the adsorment capacity showed a continuously increasing trend with decreasing pH.

274 citations

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TL;DR: In this article, the authors evaluate potential ion exchange membrane materials, currently available state-of-the-art RED membranes, and their key properties, focusing on the electrochemical and physical properties of these membranes.

250 citations


Cited by
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TL;DR: Strong acids and bases seem to be the best desorbing agents to produce arsenic concentrates, and some commercial adsorbents which include resins, gels, silica, treated silica tested for arsenic removal come out to be superior.

3,168 citations

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TL;DR: Due to complexity of soil-water system in nature, the effectiveness of biochars on remediation of various organic/inorganic contaminants is still uncertain.

3,163 citations

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TL;DR: A review of recent applications of biochars, produced from biomass pyrolysis (slow and fast), in water and wastewater treatment, and a few recommendations for further research have been made in the area of biochar development for application to water filtration.

1,738 citations

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TL;DR: An overview of biochar production technologies, biochar properties, and recent advances in the removal of heavy metals, organic pollutants and other inorganic pollutants using biochar is provided.

1,301 citations

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TL;DR: Adsorption technologies are a low-cost alternative, easily used in developing countries where there is a dearth of advanced technologies, skilled personnel, and available capital, and adsorption appears to be the most broadly feasible pharmaceutical removal method.
Abstract: In the last few decades, pharmaceuticals, credited with saving millions of lives, have emerged as a new class of environmental contaminant. These compounds can have both chronic and acute harmful effects on natural flora and fauna. The presence of pharmaceutical contaminants in ground waters, surface waters (lakes, rivers, and streams), sea water, wastewater treatment plants (influents and effluents), soils, and sludges has been well doccumented. A range of methods including oxidation, photolysis, UV-degradation, nanofiltration, reverse osmosis, and adsorption has been used for their remediation from aqueous systems. Many methods have been commercially limited by toxic sludge generation, incomplete removal, high capital and operating costs, and the need for skilled operating and maintenance personnel. Adsorption technologies are a low-cost alternative, easily used in developing countries where there is a dearth of advanced technologies, skilled personnel, and available capital, and adsorption appears to be the most broadly feasible pharmaceutical removal method. Adsorption remediation methods are easily integrated with wastewater treatment plants (WWTPs). Herein, we have reviewed the literature (1990-2018) illustrating the rising environmental pharmaceutical contamination concerns as well as remediation efforts emphasizing adsorption.

1,170 citations