Manganese Removal from Drinking Water Sources

Tobiason, John E.; Bazilio, Arianne; Goodwill, Joseph E.; Mai, Xuyen; Nguyen, Cong Tinh

doi:10.1007/s40726-016-0036-2

Cited by 160 publications

(100 citation statements)

References 50 publications

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“…Manganese is present as Mn 2+ , the oxidation of which results in the formation of a dark brown MnO 2 precipitate that can result in the discoloration of water or cause pipe blockages [11,12]. Mn in drinking water has also been linked to neurotoxic effects in children [13,14] and might affect the health of consumers [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Effect of Alkalinity on Catalytic Activity of Iron–Manganese Co-Oxide in Removing Ammonium and Manganese: Performance and Mechanism

Cheng

Zhang

et al. 2020

IJERPH

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In this study, a pilot-scale experimental filter system was used to investigate the effect of bicarbonate alkalinity on the activity of an Fe–Mn co-oxide for ammonium and manganese removal from surface water. The results showed that an increase in alkalinity to 150 mg/L (calculated as CaCO3) by the addition of NaHCO3 significantly promoted the activity of the Fe–Mn co-oxide. The ammonium and manganese removal efficiencies of the Fe–Mn co-oxide increased from 40% to 95% and 85% to 100%, respectively. After NaHCO3 was no longer added, the activity of the filter column remained. Moreover, pH (7.4–8.0) and temperature (12.0–16.0 °C) were not the main factors affecting the activity of the filter, and had no significant effect on the activity of the filter. Further characterization analysis of the Fe–Mn co-oxide filter film showed that after alkalinity was increased, the accumulation of aluminum on the filter media surface decreased from 3.55% to 0.16% and the oxide functional groups changed. This was due to the action of bicarbonate and the residual aluminum salt coagulant in the filter, which caused the loss of Al from the surface of the filter media and weakened the influence of the aluminum salt coagulant on the activity of the Fe–Mn co-oxide; hence, the activity was recovered.

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Section: Introductionmentioning

confidence: 99%

Effect of Alkalinity on Catalytic Activity of Iron–Manganese Co-Oxide in Removing Ammonium and Manganese: Performance and Mechanism

Cheng

Zhang

et al. 2020

IJERPH

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“…Eighty‐three percent of Mn resulting from oxidation was characterized as NP. Prior investigations have noted the formation of nanoscale (e.g., colloidal) Mn particles after exposure of Mn(II) to strong oxidants (Knocke et al, 1991; Reckhow et al, 1991; Tobiason et al, 2016). The PZC of Mn‐oxide particles in a laboratory water matrix was found to occur below pH 3 (Morgan and Stumm, 1964), indicating the possibility of a stable Mn colloidal suspension in the pH ranges in this study with NaOH co‐addition.…”

Section: Resultsmentioning

confidence: 99%

Preliminary Assessment of Ferrate Treatment of Metals in Acid Mine Drainage

et al. 2019

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We report a preliminary assessment of ferrate [Fe(VI)] for the treatment of acid mine drainage (AMD), focused on precipitation of metals (i.e., iron [Fe] and manganese [Mn]) and subsequent removal. Two dosing approaches were studied to simulate the two commercially viable forms of Fe(VI) production: Fe(VI) only, and Fe(VI) with sodium hydroxide (NaOH). Subsequent metal speciation was assessed via filter fractionation. When only Fe(VI) was added, the pH remained <3.6, and the precipitation of Mn and Fe was <30 and <70%, respectively, at the highest, stoichiometrically excessive Fe(VI) dose. When NaOH and Fe(VI) were added simultaneously, precipitation of Mn was much more complete, at doses near the predicted oxidation stoichiometric requirement. The optimal dosage of Fe(VI) for Mn treatment was 25 μM. The formation of Mn(VII) was noted at Fe(VI) dosages above the stoichiometric requirement, which would be problematic in full‐scale AMD treatment systems. Precipitation of Fe was >99% when only NaOH was added, indicating that oxidation by Fe(VI) did not play a significant role when added. The Fe(III) and Al(III) particles were relatively large, suggesting probable success in subsequent removal through sedimentation. Resultant Mn‐oxide particles were relatively small, indicating that additional particle destabilization may be required to meet Mn effluent goals. Ferrate seems viable for the treatment of AMD, especially when sourced through onsite generation due to the coexistence of NaOH in the product stream. More research on the use of Fe(VI) for AMD treatment is required to answer extant questions. Core Ideas Ferrate is likely a viable option for acid mine drainage treatment. Oxidation of manganese with ferrate and NaOH approached stoichiometric prediction. Resultant particles may challenge downstream clarification.

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“…The elevation in manganese concentration resulted from anoxic environment is common in groundwater. Circumneutral pH helps to keep manganese in their reduced and soluble form and the solubility of manganese can be increased by high concentration of NOM in form of manganese-NOM complexation [30], [44].…”

Section: Fig 1 Conductivity Variation During Purging Processmentioning

confidence: 99%

“…Most extensively used method to remove manganese is by oxidation of manganese from Mn(II) to Mn(IV) followed by physical filtration as Mn(IV) is insoluble in water. However the kinetic of oxidation by oxygen (O2) is quite slow compared to hydraulic retention times typically encountered in drinking water treatment systems when pH is less than 9 [30] thus stronger oxidation are required which normally produced toxic byproduct [23]. Membrane filtration also possesses good performance on manganese removal.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Metakaolin as Low Cost Adsorbent for Manganese Removal in Anoxic Groundwater

Sapingi¹,

Murshed²,

Tajaruddin³

et al. 2019

Civil and Environmental Engineering Reports

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The recent climate condition and pollution problem related to surface water have led to water scarcity in Malaysia. Huge amount of groundwater has been identified as viable source for drinking water. This paper was aimed to investigate groundwater’s quality at specific location and metakaolin’s potential in the groundwater treatment in the removal of manganese. Groundwater purging was determined to be sufficient at 120 minutes where all three parameters (pH, dissolved oxygen and conductivity) were stabilized. The groundwater studied is classified as both anoxic and reductive due the low dissolved oxygen value. It also can be categorized as brackish due to high value of conductivity and total dissolved solid. Manganese content in groundwater was determined as higher than of that permissible limit for raw water and drinking water which makes it unsuitable for them not suitable for consumption and cleaning purpose. Average manganese concentration in samples was 444.0 ppb where the concentrations of manganese ranged from 229.4 ppb to 760.3 ppb. Manganese developed is not that a strong positive correlation against iron concentration, total dissolved solids and conductivity; whereas has a moderate negative correlation against dissolved oxygen. The capability adsorption of manganese by metakaolin was assessed via batch method which indicated optimum dosage and contact time was 14g that removed average 30.2% and contact time optimum at 120 minutes which removed 33.2% manganese from the sample.

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Manganese Removal from Drinking Water Sources

Cited by 160 publications

References 50 publications

Effect of Alkalinity on Catalytic Activity of Iron–Manganese Co-Oxide in Removing Ammonium and Manganese: Performance and Mechanism

Effect of Alkalinity on Catalytic Activity of Iron–Manganese Co-Oxide in Removing Ammonium and Manganese: Performance and Mechanism

Preliminary Assessment of Ferrate Treatment of Metals in Acid Mine Drainage

Performance Evaluation of Metakaolin as Low Cost Adsorbent for Manganese Removal in Anoxic Groundwater

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