Biological and physico-chemical formation of Birnessite during the ripening of manganese removal filters

Bruins, Jantinus H.; Petrus̆evski, B.; Slokar, Yness M.; Huysman, Koen; Joris, Koen; Kruithof, Joop C.; Kennedy, Maria D.

doi:10.1016/j.watres.2014.11.019

Cited by 95 publications

(43 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This is because the aluminum on the MnO x (s) media coating surface was most likely amorphous and lacked a lattice structure that would have produced a measurable response from this analytical method. These SAED results correlate well with the published works of Bruins et al (), who reported birnessite to be a major constituent of the MnO x (s) coatings found on filter media in manganese removal facilities.…”

Section: Resultssupporting

confidence: 91%

Incorporating aluminum species in MnO_x(s) coatings on water filtration media

2018

View full text Add to dashboard Cite

The manganese oxide (MnOx(s)) coatings often found on water treatment filtration media are known to effectively remove dissolved manganese from water, but little is known about the chemistry and the formation of these MnOx(s) coatings. This study evaluated the role of particulate aluminum (Al) species (specifically Al(OH)3(am)) as a source for aluminum found in these media coatings. Bench‐scale experiments and surface analysis techniques evaluated the aluminum and manganese content of the media coatings formed under varying conditions. Particulate aluminum species were shown to be a significant source of aluminum in the MnOx(s)‐based coatings on filter media. Likewise, aluminum incorporation into the media coating did not take place without soluble manganese and free chlorine concurrently being applied to the filter media. Analysis of the MnOx(s) coating by electron microscopy showed a heterogeneous surface composed of a mix of weakly crystalline manganese oxides existing alongside amorphous Al(OH)3(am) species.

show abstract

Section: Resultssupporting

confidence: 91%

Incorporating aluminum species in MnO_x(s) coatings on water filtration media

2018

View full text Add to dashboard Cite

show abstract

“…The lattice distortion results in some blue shift of v 2 symmetric stretching vibration (Figure ) . Raman peaks at 290 cm −1 and 475 cm −1 are attributed to exchangeable sodium/potassium ions with their adjacent lattice oxygen between the layers for birnessite,, which disappear after the Cu 2+ ‐modification.…”

Section: Resultssupporting

confidence: 91%

Catalytic Process Optimization of Birnessite‐based Fenton‐like Reaction with Surface Cu²⁺ Modification

Zang

Jin

et al. 2018

ChemCatChem

View full text Add to dashboard Cite

Layer-structured birnessite (d-MnO 2 ) has been applied recently in the heterogeneous Fenton-like process. However, easy deactivation and low utilization efficiency of H 2 O 2 limit its practical application. The catalytic processes of H 2 O 2 on birnessite were successfully regulated via surface chemical modification as Cu 2 + ions were intercalated into the birnessite by the ion-exchange method (CuBir). The triple-corner-sharing inner-sphere surface complexes of Cu 2 + ions (TCS species) formed above Mn vacancies could effectively weaken the over-complexation of H 2 O 2 on the surface of [MnO 6 ] sheets, and then decrease the self-consumption of surface-formed superoxide radicals. The surface TCS species have excellent Fenton-like performances and enhance the conversion efficiency of H 2 O 2 into reactive oxygen species (ROS). Moreover, the surface Cu 2 + -modification engineering could prevent deactivation owing to degradation intermediate residues and improve the recyclability of catalyst.

show abstract

“…In contrast to the flat surface of the normal quartz sand, the surface of MeO x was rough and porous. The SEM micrographs also indicate that MeO x had coral- or sponge-like structures, meaning that the formation of MeO x follows a typical physicochemical procedure [ 26 ] and this structure may have strong autocatalytic oxidation capability for Mn 2+ [ 27 ]. In this study, it may be favorable for the chemical catalytic oxidation of ammonium.…”

Section: Resultsmentioning

confidence: 99%

Using Iron-Manganese Co-Oxide Filter Film to Remove Ammonium from Surface Water

Zhang

Wen

Chen

et al. 2017

IJERPH

View full text Add to dashboard Cite

An iron-manganese co-oxide filter film (MeOx) has been proven to be a good catalyst for the chemical catalytic oxidation of ammonium in groundwater. Compared with groundwater, surface water is generally used more widely and has characteristics that make ammonium removal more difficult. In this study, MeOx was used to remove ammonium from surface water. It indicated that the average ammonium removal efficiency of MeOx was greater than 90%, even though the water quality changed dramatically and the water temperature was reduced to about 6–8 °C. Then, through inactivating microorganisms, it showed that the removal capability of MeOx included both biological (accounted for about 41.05%) and chemical catalytic oxidation and chemical catalytic oxidation (accounted for about 58.95%). The investigation of the characterizations suggested that MeOx was formed by abiotic ways and the main elements on the surface of MeOx were distributed homogenously. The analysis of the catalytic oxidation process indicated that ammonia nitrogen may interact with MeOx as both ammonia molecules and ammonium ions and the active species of O2 were possibly •O and O2−.

show abstract

Biological and physico-chemical formation of Birnessite during the ripening of manganese removal filters

Cited by 95 publications

References 39 publications

Incorporating aluminum species in MnO_x(s) coatings on water filtration media

Incorporating aluminum species in MnO_x(s) coatings on water filtration media

Catalytic Process Optimization of Birnessite‐based Fenton‐like Reaction with Surface Cu²⁺ Modification

Using Iron-Manganese Co-Oxide Filter Film to Remove Ammonium from Surface Water

Contact Info

Product

Resources

About

Biological and physico-chemical formation of Birnessite during the ripening of manganese removal filters

Cited by 95 publications

References 39 publications

Incorporating aluminum species in MnOx(s) coatings on water filtration media

Incorporating aluminum species in MnOx(s) coatings on water filtration media

Catalytic Process Optimization of Birnessite‐based Fenton‐like Reaction with Surface Cu2+ Modification

Using Iron-Manganese Co-Oxide Filter Film to Remove Ammonium from Surface Water

Contact Info

Product

Resources

About

Incorporating aluminum species in MnO_x(s) coatings on water filtration media

Incorporating aluminum species in MnO_x(s) coatings on water filtration media

Catalytic Process Optimization of Birnessite‐based Fenton‐like Reaction with Surface Cu²⁺ Modification