Removal of trace mercury(II) from aqueous solution by in situ formed Mn–Fe (hydr)oxides

Lu, Xixin; Huangfu, Xiaoliu

doi:10.1016/j.jhazmat.2014.07.056

Cited by 90 publications

(48 citation statements)

References 52 publications

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“…There were five deconvolution peaks in the RM sample. The peaks centered at 741.8 eV and 731.9 eV were the spectral peaks of FeOOH [29], confirming its presence in the RM sample. In addition, the presence of Fe 2 O 3 was confirmed by the peaks centered at 710.8 eV and 724.6 eV, which are the spectral peaks of 2p 3/2 and 2p 1/2 of iron [30].…”

Section: Resultsmentioning

confidence: 54%

Cobalt modified red mud catalytic ozonation for the degradation of bezafibrate in water: Catalyst surface properties characterization and reaction mechanism

Zhang

et al. 2016

Chemical Engineering Journal

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Section: Resultsmentioning

confidence: 54%

Cobalt modified red mud catalytic ozonation for the degradation of bezafibrate in water: Catalyst surface properties characterization and reaction mechanism

Zhang

et al. 2016

Chemical Engineering Journal

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“…Efficient COD removal was, however, high It is believed that active catalytic surfaces can induce ozone to form •OH, accelerating chemical degradation. Surface -OHs on the catalytic surface are known to have an impact during this process [42][43][44]. Solution pH values near the pH pzc of a catalyst can result in accelerated •OH generation [45].…”

Section: Mechanisms Of Catalytic Ozonationmentioning

confidence: 99%

Comparison of Efficiencies and Mechanisms of Catalytic Ozonation of Recalcitrant Petroleum Refinery Wastewater by Ce, Mg, and Ce-Mg Oxides Loaded Al2O3

Chen

Yoza

et al. 2017

Catalysts

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Abstract:The use of catalytic ozonation processes (COPs) for the advanced treatment of recalcitrant petroleum refinery wastewater (RPRW) is rapidly expanding. In this study, magnesium (Mg), cerium (Ce), and Mg-Ce oxide-loaded alumina (Al 2 O 3 ) were developed as cost efficient catalysts for ozonation treatment of RPRW, having performance metrics that meet new discharge standards. Interactions between the metal oxides and the Al 2 O 3 support influence the catalytic properties, as well as the efficiency and mechanism. Mg-Ce/Al 2 O 3 (Mg-Ce/Al 2 O 3 -COP) reduced the chemical oxygen demand by 4.7%, 4.1%, 6.0%, and 17.5% relative to Mg/Al 2 O 3 -COP, Ce/Al 2 O 3 -COP, Al 2 O 3 -COP, and single ozonation, respectively. The loaded composite metal oxides significantly increased the hydroxyl radical-mediated oxidation. Surface hydroxyl groups (-OHs) are the dominant catalytic active sites on Al 2 O 3 . These active surface -OHs along with the deposited metal oxides (Mg 2+ and/or Ce 4+ ) increased the catalytic activity. The Mg-Ce/Al 2 O 3 catalyst can be economically produced, has high efficiency, and is stable under acidic and alkaline conditions.

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“…Most common coagulants are aluminum and iron salts [12] such as ferric chloride (FeCl 3 ). There are many problems associated with the use of synthetic coagulants [13] such as cost as well as the environmental contamination [11][12][13][14] and community health concerns such as Alzheimer disease [8,11] and production of large amount of sludge [3,13]. Silver nanoparticles were successfully removed at neutral pH using polyaluminum chloride and poly ferric sulfate.…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

A comparative study of synthetic and natural coagulants for silver nanoparticles removal from wastewater

Ahmed

Bhatti

Maqbool

et al. 2016

Desalination and Water Treatment

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A B S T R A C TUse of silver nanoparticles is increasing in different packaging material as disinfectant to protect food and pharmaceutical products. Its use has raised the contamination risk of fresh water and human exposure can cause serious problems. The coagulation/flocculation process can be an attractive option for silver nanoparticles removal at small-scale treatment just after its use. Four coagulants, aluminum sulfate, ferric chloride, Ocimum basilicum, and Hibiscus esculentus (synthetic and natural) were applied. For coagulation/flocculation activity, a series of jar test experiments were conducted to treat silver nanoparticles at concentration of 1 mg L −1 from wastewater. H. esculentus efficiently removed silver nanoparticles (98.7%) from aqueous solution at a dose of 150 mg L −1 , whereas at same coagulant dose, ferric chloride, O. basilicum, and aluminum sulfate successfully removed silver nanoparticles at 96, 69, and 50%, respectively. No broad change in pH was observed and it remained between 6.5 and 7.5 during all the experiments at room temperature.

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Removal of trace mercury(II) from aqueous solution by in situ formed Mn–Fe (hydr)oxides

Cited by 90 publications

References 52 publications

Cobalt modified red mud catalytic ozonation for the degradation of bezafibrate in water: Catalyst surface properties characterization and reaction mechanism

Cobalt modified red mud catalytic ozonation for the degradation of bezafibrate in water: Catalyst surface properties characterization and reaction mechanism

Comparison of Efficiencies and Mechanisms of Catalytic Ozonation of Recalcitrant Petroleum Refinery Wastewater by Ce, Mg, and Ce-Mg Oxides Loaded Al2O3

A comparative study of synthetic and natural coagulants for silver nanoparticles removal from wastewater

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