High treatment effectiveness for secondary effluent in Fe–C microelectrolysis constructed wetlands with electron donor supplementation

Ji, Bohua; Jiang, Ming; Yang, Ying; Deng, Shengjiong; Chen, Jinquan; Chang, Junjun

doi:10.1016/j.jclepro.2022.130934

Cited by 26 publications

(2 citation statements)

References 46 publications

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“…Fe-MOF, nZVI, Fe x O y , and their composites have already gone out of the laboratory and been used in groundwater remediation, heavy metal contaminated soil remediation, sewage treatment plant, artificial wetland construction, and other practical environmental applications. [2,81] Research on FeSe 2 and its composites should also be accelerated.…”

Section: Catalytic Performance Compared With Other Corresponding Fe-b...mentioning

confidence: 99%

FeSe₂ and Its Composites for Pollutants Removal: Synthesis, Mechanisms, and Application Potential

Xu,

Huang,

et al. 2024

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In recent years, the research of FeSe2 and its composites in environmental remediation has been gradually carried out. And the FeSe2 materials show great catalytic performance in photocatalysis, electrocatalysis, and Fenton‐like reactions for pollutants removal. Therefore, the studies and applications of FeSe2 materials are reviewed in this work, including the common synthesis methods, the role of Fe and Se species as well as the catalyst structure, and the potential for practical environmental applications. Hereinto, it is worth noting in particular that the lower‐valent Se (Se2−), unsaturated Se (Se−), and Se vacancies (VSe) can play different roles in promoting pollutants removal. In addition, the FeSe2 material also demonstrates high stability, reusability, and adaptability over a wider pH range as well as universality to different pollutants. In view of the overall great properties and performance of FeSe2 materials compared with other typical Fe‐based materials, it deserves and needs further research. And finally, this paper presents some challenges and perspectives in future development, looking forward to providing helpful guidance for the subsequent research of FeSe2 and its composites for environmental application.

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Section: Catalytic Performance Compared With Other Corresponding Fe-b...mentioning

confidence: 99%

FeSe₂ and Its Composites for Pollutants Removal: Synthesis, Mechanisms, and Application Potential

Xu,

Huang,

et al. 2024

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“…Based on the electric potential difference between iron powder and biochar powder in the SMBs, the ICM can generate abundant tiny galvanic cells with the production of ferrous ions (Fe 2+ ) and hydrogen radicals ([H]), which at the anode (ZVI) generate electrons and cathodes (biochar) with the exception of electrons, respectively [34]. These strong oxidizing products could effectively break down the structure of organic molecules [35]. Therefore, the ICM in the SMBs could improve the biodegradability of sewage and greatly enhance the microbial transformation of the pollutants.…”

Section: Icm In the Smbs And The Ec Variation In The Msl Systemsmentioning

confidence: 99%

Enhanced Treatment of Decentralized Domestic Sewage Using Gravity-Flow Multi-Soil-Layering Systems Coupled with Iron-Carbon Microelectrolysis

et al. 2022

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Soil-based decentralized treatment technology has become increasingly popular as an ideal solution for water pollution control in rural areas. It is very necessary to optimize the removal mechanisms and performance of such technologies on rural domestic sewage treatment. This was the first study of a gravity-flow multi-soil-layering (MSL) system coupled with iron-carbon microelectrolysis (ICM). Influent COD/TN (C/N) ratio and bottommost soil mixture block (SMB) submersion were selected as the operating factors relevant to the ICM in MSL systems. Such two key factors were investigated in the factorial experiment. The removal efficiencies of COD, TP, NH3-N, NO3−-N, and TN could be reached up to 96.3, 100, 95.4, 93.8, and 79.6%, respectively. Different levels of factors could comprehensively drive the performance variation. The factorial analysis indicated that the bottommost SMB submersion had the most significant and dominant negative effects on aerobic processes. The ideal TP removal attributed to the presence of the bottommost SMB submersion. It played the dominant role for the bottommost SMB submersion in facilitating an electrochemical reaction through the ICM. Zero-valent iron or ferrous ions could be transformed to final ferric ions more efficiently during the period of the ICM reactions. The ICM could promote the capability of a SMB for removing nutrients in sewage, especially provide electron donors to denitrifying bacteria in MSL systems. However, there were non-significant effects of the influent C/N ratio on the removal performance of MSL systems. This study can help enrich the pollutant removal mechanisms in MSL systems.

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Study on the Effect of Iron-Carbon Micro-electrolysis Process on the Removal of Nitrogen and Phosphorus from Rural Domestic Wastewater with Low Carbon to Nitrogen Ratio

Liang

Wang²,

Li³

et al. 2023

Water Air Soil Pollut

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High treatment effectiveness for secondary effluent in Fe–C microelectrolysis constructed wetlands with electron donor supplementation

Cited by 26 publications

References 46 publications

FeSe₂ and Its Composites for Pollutants Removal: Synthesis, Mechanisms, and Application Potential

FeSe₂ and Its Composites for Pollutants Removal: Synthesis, Mechanisms, and Application Potential

Enhanced Treatment of Decentralized Domestic Sewage Using Gravity-Flow Multi-Soil-Layering Systems Coupled with Iron-Carbon Microelectrolysis

Study on the Effect of Iron-Carbon Micro-electrolysis Process on the Removal of Nitrogen and Phosphorus from Rural Domestic Wastewater with Low Carbon to Nitrogen Ratio

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High treatment effectiveness for secondary effluent in Fe–C microelectrolysis constructed wetlands with electron donor supplementation

Cited by 26 publications

References 46 publications

FeSe2 and Its Composites for Pollutants Removal: Synthesis, Mechanisms, and Application Potential

FeSe2 and Its Composites for Pollutants Removal: Synthesis, Mechanisms, and Application Potential

Enhanced Treatment of Decentralized Domestic Sewage Using Gravity-Flow Multi-Soil-Layering Systems Coupled with Iron-Carbon Microelectrolysis

Study on the Effect of Iron-Carbon Micro-electrolysis Process on the Removal of Nitrogen and Phosphorus from Rural Domestic Wastewater with Low Carbon to Nitrogen Ratio

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FeSe₂ and Its Composites for Pollutants Removal: Synthesis, Mechanisms, and Application Potential

FeSe₂ and Its Composites for Pollutants Removal: Synthesis, Mechanisms, and Application Potential