The simultaneous removal of ammonium and manganese from groundwater by iron-manganese co-oxide filter film: The role of chemical catalytic oxidation for ammonium removal

Guo, Yingming; Huang, Tinglin; Wen, Gang; Cao, Xin

doi:10.1016/j.cej.2016.09.073

Cited by 90 publications

(58 citation statements)

References 39 publications

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“…It means that the reduction of manganese dioxide is catalyzed by ammonium. The probable anode half‐reactions representing pyrolusite‐coke wastewater systems may be listed as :

{MnO}_{2} + 4 H^{+} + 2 normale = {Mn}^{2 +} + 2 H_{2} normalO

{MnO}_{2} + {NH}_{4}^{+} + normale = MnO \cdot OH + {NH}_{3}

…”

Section: Resultsmentioning

confidence: 99%

Electrochemical Behavior of Manganese Oxide Ores Using Coke Wastewater in Sulfuric Acid Solution

Kang

Feng

et al. 2019

Env Prog and Sustain Energy

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The coke wastewater reductive leaching of pyrolusite ore in sulfuric acid solution was studied. This study was performed in two stages. First, the influence of tractable and refractory pollutants of coke wastewater on manganese leaching was determined. It was shown that the leaching efficiency of manganese is very sensitive to the decomposition of intractable pollutants. With the decrease of 1.85 g/L CODcr value of those contaminants, the extraction ratio of manganese increased more than 16% and exceeded 97.3%. Second, the corrosion behavior of pyrolusite ore in simulative wastewater solution was investigated using cyclic voltammograms, polarization curves, and Mott–Schottky curves. The reduction of manganese oxide ore by recalcitrant organic compounds involves two courses—the inducing conversion of manganese oxide to MnO·OH intermediate with hydrogen and free electron, which is from the oxidation of easily oxidized substances and the oxidation of persistent organic matter by this derivative. As a consequence, the latter process leads to the increment in manganese extraction efficiency. Coke wastewater is a promising reducing agent for MnO2. Likewise, it could be clarified and recycling. © 2019 American Institute of Chemical Engineers Environ Prog, 38:e13039, 2019

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“…It means that the reduction of manganese dioxide is catalyzed by ammonium. The probable anode half‐reactions representing pyrolusite‐coke wastewater systems may be listed as :

{MnO}_{2} + 4 H^{+} + 2 normale = {Mn}^{2 +} + 2 H_{2} normalO

{MnO}_{2} + {NH}_{4}^{+} + normale = MnO \cdot OH + {NH}_{3}

…”

Section: Resultsmentioning

confidence: 99%

Electrochemical Behavior of Manganese Oxide Ores Using Coke Wastewater in Sulfuric Acid Solution

Kang

Feng

et al. 2019

Env Prog and Sustain Energy

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“…Where Fe and Mn co‐exist in groundwater, conventional physical and chemical purification methods (e.g., oxidation and filtration) have been used to remove these metals (Du et al ; Guo et al ). However, it remains challenging to simultaneously remove Fe and Mn from groundwater by conventional methods.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Salix Genotypes for Co‐Phytofiltration of Iron and Manganese from Simulated Contaminated Groundwater in a Floating Culture System

Yang¹,

Dong²,

Liu³

et al. 2019

Groundwater Monitoring Rem

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Groundwater contamination with iron (Fe) and manganese (Mn) is directly related to drink water safety. It remains challenging to simultaneously remove Fe and Mn from groundwater by conventional physical and chemical methods. Willows (Salix spp.) show promise for co‐phytofiltration of Mn and Fe from groundwater. Here, a floating culture system was developed using willows for co‐phytofiltration of Mn and Fe from simulated groundwater. Genotypic differences of willows were evaluated in terms of their tolerance to and accumulation of a mixture of Fe and Mn. The results showed that the growth responses of eight genotypes significantly differed to a mixture of Fe and Mn, ranging from growth inhibition to enhancement. Tolerance index analysis further indicated wide variation in the responses of willows. Tissue‐specific analysis also revealed genotypic variation in the capacity of willows for translocation and accumulation of Fe and Mn. Compared with other genotypes, SB7 (Salix babylonica) and J842 (S. babylonica × Salix alba) demonstrated higher co‐phytofiltration potentials for Fe and Mn based on tolerance, tissue metal concentrations, and shoot metal contents. Thus, both SB7 and J842 are candidates for co‐phytofiltration of Fe and Mn from groundwater.

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“…One is the removal of heavy metals, such as As 5+ (Driehaus, Seith, & Jekel, ; Hou et al., ), Pb 2+ (Chen et al., ; Wan et al., ; Wang et al., ), and Cr 6+ (Landrot, Gindervogel, Livi, Fitts, & Sparks, ; Tang, Webb, Estes, & Hansel, ), and the other is to remove the organic matters, for example, phenols (Selig, Keinath, & Weber, ; Ulrich & Stone, ), anilines (Laha & Luthy, ; Park, Dec, Kim, & Bollag, ), low‐molecular‐weight acids (Xyla et al., ), and pesticide (Šťastný et al., ). Our previous research has found that MnO x film coated on silica sands in aerobic filter had strong catalytic activity for ammonium removal (Cheng, Huang, Sun, & Shi, ; Guo, Huang, Wen, & Cao, ; Zhang, Huang, et al., ). However, the removal of ammonium in the MnO x ‐based filter has been conventionally believed to be purely by the ammonia‐oxidizing bacteria.…”

Section: Introductionmentioning

confidence: 99%

“…Guo et al. () found that more than 90% of ammonium was still removed by the MnO x film even after inactivating the bacteria in the filter by aerating ozone and injecting hydrogen peroxide. Cheng et al.…”

Section: Introductionmentioning

confidence: 99%

Removing ammonium from underground water by strengthening Mn(III) generation through electrochemical reduction

Shi

et al. 2019

Water Environment Research

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Manganese oxide has been found to be an active catalyst for ammonium oxidation. This work presented an innovative electrochemical system to improve the removal efficiency of ammonium by strengthening the generation of Mn(III). In this system, the manganese oxide coating activated carbon (MnOx/AC) particles were used as the cathode of a fuel cell (MnOx/AC‐Ca). Compared to the conventional method using MnOx in a nonelectrochemical system (MnOx/AC‐Control), the ammonium removal efficiency was doubled in the MnOx/AC‐Ca system. Conversely, when using MnOx as the anode of a fuel cell (MnOx/AC‐An), the ammonium removal efficiency was lower than that in the MnOx/AC‐Control system. XPS results showed that Mn(III) in the MnOx/AC‐Ca system was obviously higher than that in the MnOx/AC‐Control system. Conversely, more Mn(IV), which was less active than Mn(III) for NH4+-N removal, was detected in the MnOx/AC‐An system. The possible pathway for the ammonium removal by MnOx was that Mn(III) reacted with NH4+-N and produced Mn2+. These Mn2+ were then reoxidized into new active MnOx under the self‐catalysis of MnOx, resulting in a continuous ammonium removal. Moreover, nitrite, the intermediate product of ammonium oxidation, can be oxidized by MnOx, thus helping the ammonium oxidation process. Practitioner points Mn(III) was generated by using MnOx as the cathode of fuel cells. Ammonium removal efficiency went up with the content of Mn(III) in MnOx. Mechanism of the NH4+-N removal by MnOx was discussed.

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The simultaneous removal of ammonium and manganese from groundwater by iron-manganese co-oxide filter film: The role of chemical catalytic oxidation for ammonium removal

Cited by 90 publications

References 39 publications

Electrochemical Behavior of Manganese Oxide Ores Using Coke Wastewater in Sulfuric Acid Solution

Electrochemical Behavior of Manganese Oxide Ores Using Coke Wastewater in Sulfuric Acid Solution

Comparison of Salix Genotypes for Co‐Phytofiltration of Iron and Manganese from Simulated Contaminated Groundwater in a Floating Culture System

Removing ammonium from underground water by strengthening Mn(III) generation through electrochemical reduction

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