Simultaneous removal of iron, manganese, and ammonia enhanced by preloaded MnO2 on low-pressure ultrafiltration membrane

Xuesong Ye; Jun Nan; Zhencheng Ge; Qiliang Xiao; Bohan Liu; Yujie Men; Jinyong Liu

doi:10.1016/j.memsci.2022.120641

Simultaneous removal of iron, manganese, and ammonia enhanced by preloaded MnO₂ on low-pressure ultrafiltration membrane

Xuesong Ye
, Jun Nan^*
, Zhencheng Ge
, Qiliang Xiao
, Bohan Liu
, Yujie Men
, Jinyong Liu

^*Corresponding author for this work

School of Environment

Harbin Institute of Technology
University of California at Riverside

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

Low-pressure ultrafiltration membrane (LPM) is an ideal technology for decentralized water supply. However, the applicability for removing ferrous iron (Fe²⁺), manganese (Mn²⁺), and ammonia (NH₄⁺) in the source water and related mechanisms remained unknown. To fill this major knowledge gap, we systematically compared the pristine (pr-LPM) and MnO₂-preloaded membrane (Mn-LPM). Mn-LPM allowed higher water flux while enhancing the removal of Fe²⁺, Mn²⁺, and NH₄⁺. The removal efficiency of Mn²⁺ immediately reached 99.6% on the first day. The preloading of MnO₂ also enhanced the removal capacity of NH₄⁺. A series of instrument characterizations suggest that a higher NH₄⁺ concentration resulted in a thicker bio-cake layer, correlating to the higher pollutant removal efficiency and the decrease in the stable flux. Under high NH₄⁺ concentrations, Anaerobic Ammonia Oxidation likely contributes to NH₄⁺ removal. These findings significantly improve the understanding and help the design of LPM systems for cost-effective decentralized water supply in remote areas.

Original language	English
Article number	120641
Journal	Journal of Membrane Science
Volume	656
DOIs	https://doi.org/10.1016/j.memsci.2022.120641
State	Published - 15 Aug 2022

Keywords

Anammox
Autocatalytic oxidation
Bio-cake layer
Metagenome sequencing
Optical coherence tomography

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title = "Simultaneous removal of iron, manganese, and ammonia enhanced by preloaded MnO2 on low-pressure ultrafiltration membrane",

abstract = "Low-pressure ultrafiltration membrane (LPM) is an ideal technology for decentralized water supply. However, the applicability for removing ferrous iron (Fe2+), manganese (Mn2+), and ammonia (NH4+) in the source water and related mechanisms remained unknown. To fill this major knowledge gap, we systematically compared the pristine (pr-LPM) and MnO2-preloaded membrane (Mn-LPM). Mn-LPM allowed higher water flux while enhancing the removal of Fe2+, Mn2+, and NH4+. The removal efficiency of Mn2+ immediately reached 99.6\% on the first day. The preloading of MnO2 also enhanced the removal capacity of NH4+. A series of instrument characterizations suggest that a higher NH4+ concentration resulted in a thicker bio-cake layer, correlating to the higher pollutant removal efficiency and the decrease in the stable flux. Under high NH4+ concentrations, Anaerobic Ammonia Oxidation likely contributes to NH4+ removal. These findings significantly improve the understanding and help the design of LPM systems for cost-effective decentralized water supply in remote areas.",

keywords = "Anammox, Autocatalytic oxidation, Bio-cake layer, Metagenome sequencing, Optical coherence tomography",

author = "Xuesong Ye and Jun Nan and Zhencheng Ge and Qiliang Xiao and Bohan Liu and Yujie Men and Jinyong Liu",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2022",

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day = "15",

doi = "10.1016/j.memsci.2022.120641",

language = "英语",

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T1 - Simultaneous removal of iron, manganese, and ammonia enhanced by preloaded MnO2 on low-pressure ultrafiltration membrane

AU - Ye, Xuesong

AU - Nan, Jun

AU - Ge, Zhencheng

AU - Xiao, Qiliang

AU - Liu, Bohan

AU - Men, Yujie

AU - Liu, Jinyong

PY - 2022/8/15

Y1 - 2022/8/15

N2 - Low-pressure ultrafiltration membrane (LPM) is an ideal technology for decentralized water supply. However, the applicability for removing ferrous iron (Fe2+), manganese (Mn2+), and ammonia (NH4+) in the source water and related mechanisms remained unknown. To fill this major knowledge gap, we systematically compared the pristine (pr-LPM) and MnO2-preloaded membrane (Mn-LPM). Mn-LPM allowed higher water flux while enhancing the removal of Fe2+, Mn2+, and NH4+. The removal efficiency of Mn2+ immediately reached 99.6% on the first day. The preloading of MnO2 also enhanced the removal capacity of NH4+. A series of instrument characterizations suggest that a higher NH4+ concentration resulted in a thicker bio-cake layer, correlating to the higher pollutant removal efficiency and the decrease in the stable flux. Under high NH4+ concentrations, Anaerobic Ammonia Oxidation likely contributes to NH4+ removal. These findings significantly improve the understanding and help the design of LPM systems for cost-effective decentralized water supply in remote areas.

AB - Low-pressure ultrafiltration membrane (LPM) is an ideal technology for decentralized water supply. However, the applicability for removing ferrous iron (Fe2+), manganese (Mn2+), and ammonia (NH4+) in the source water and related mechanisms remained unknown. To fill this major knowledge gap, we systematically compared the pristine (pr-LPM) and MnO2-preloaded membrane (Mn-LPM). Mn-LPM allowed higher water flux while enhancing the removal of Fe2+, Mn2+, and NH4+. The removal efficiency of Mn2+ immediately reached 99.6% on the first day. The preloading of MnO2 also enhanced the removal capacity of NH4+. A series of instrument characterizations suggest that a higher NH4+ concentration resulted in a thicker bio-cake layer, correlating to the higher pollutant removal efficiency and the decrease in the stable flux. Under high NH4+ concentrations, Anaerobic Ammonia Oxidation likely contributes to NH4+ removal. These findings significantly improve the understanding and help the design of LPM systems for cost-effective decentralized water supply in remote areas.

KW - Anammox

KW - Autocatalytic oxidation

KW - Bio-cake layer

KW - Metagenome sequencing

KW - Optical coherence tomography

UR - https://www.scopus.com/pages/publications/85130973189

U2 - 10.1016/j.memsci.2022.120641

DO - 10.1016/j.memsci.2022.120641

M3 - 文章

AN - SCOPUS:85130973189

SN - 0376-7388

VL - 656

JO - Journal of Membrane Science

JF - Journal of Membrane Science

M1 - 120641

ER -

Simultaneous removal of iron, manganese, and ammonia enhanced by preloaded MnO₂ on low-pressure ultrafiltration membrane

Abstract

Keywords

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