Role of macrophyte species in constructed wetland-microbial fuel cell for simultaneous wastewater treatment and bioenergy generation

Yang, Yan; Zhao, Yaqian; Tang, Cheng; Xu, Lei; Morgan, David; Liu, Ranbin

doi:10.1016/j.cej.2019.123708

Cited by 97 publications

(17 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The effluent DO in both Device A (5.31 mg/L) and Device B (4.83 mg/L) were higher than the influent DO, which may be due to the oxygen intake from the atmosphere via employing the tidal flow mode. Meanwhile, the direct reduction by heterotrophic and electroactive microorganisms in the root area and plant uptake in the system also improved COD degradation rates (Yang et al, 2020). Additionally, wastewater treatment by the coupled MFC has been reported to be more effective than that by CWs.…”

Section: Wastewater Treatment Performancementioning

confidence: 99%

Response Characteristics of Nitrifying Bacteria and Archaea Community Involved in Nitrogen Removal and Bioelectricity Generation in Integrated Tidal Flow Constructed Wetland-Microbial Fuel Cell

et al. 2020

View full text Add to dashboard Cite

This study explores nitrogen removal performance, bioelectricity generation, and the response of microbial community in two novel tidal flow constructed wetlandmicrobial fuel cells (TFCW-MFCs) when treating synthetic wastewater under two different chemical oxygen demand/total nitrogen (COD/TN, or simplified as C/N) ratios (10:1 and 5:1). The results showed that they achieved high and stable COD, NH 4 +-N, and TN removal efficiencies. Besides, TN removal rate of TFCW-MFC was increased by 5-10% compared with that of traditional CW-MFC. Molecular biological analysis revealed that during the stabilization period, a low C/N ratio remarkably promoted diversities of ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) in the cathode layer, whereas a high one enhanced the richness of nitrite-oxidizing bacteria (NOB) in each medium; the dominant genera in AOA, AOB, and NOB were Candidatus Nitrosotenuis, Nitrosomonas, and Nitrobacter. Moreover, a high C/N ratio facilitated the growth of Nitrosomonas, while it inhibited the growth of Candidatus Nitrosotenuis. The distribution of microbial community structures in NOB was separated by space rather than time or C/N ratio, except for Nitrobacter. This is caused by the differences of pH, dissolved oxygen (DO), and nitrogen concentration. The response of microbial community characteristics to nitrogen transformations and bioelectricity generation demonstrated that TN concentration is significantly negatively correlated with AOA-shannon, AOA-chao, 16S rRNA V4−V5-shannon, and 16S rRNA V4−V5-chao, particularly due to the crucial functions of Nitrosopumilus, Planctomyces, and Aquicella. Additionally, voltage output was primarily influenced by microorganisms in the genera of

show abstract

Section: Wastewater Treatment Performancementioning

confidence: 99%

Response Characteristics of Nitrifying Bacteria and Archaea Community Involved in Nitrogen Removal and Bioelectricity Generation in Integrated Tidal Flow Constructed Wetland-Microbial Fuel Cell

et al. 2020

View full text Add to dashboard Cite

show abstract

Section: Innovative and Hybrid Wetlandsmentioning

confidence: 92%

“…The presence of plant improved the removal of COD (88.1%), TDS (82.05%) and produced maximum cell voltage of 0.86 V when compared with removal of COD (83.1%)and TDS (77.5%) in absence of plant producing 0.75 V cell voltage (Das, Thakur, Chaithanya, & Biswas, 2019). Similarly, Yang, Zhao, Tang, Xu, et al (2019) investigated the performance of CW‐MFCs in the presence and absence of vegetation ( Iris pseudacorus, Hyacinth pink, and Phragmites australis ) and compared with traditional CW in terms of pollutant removal and bioelectricity production. The study revealed that the CW‐MFC module with vegetation showed higher removal efficiencies of COD (46.9%–51.6%), NO 3 − N (94.8%–97.4%), NH 4 + ‐N (43.2%–71.5%), and PO 4 3− ‐P (96.0%–97.6%) removal compared to 36.6%, 89.9%, 43.0%, 97.1% in the unplanted wetland module, respectively.…”

Section: Innovative and Hybrid Wetlandsmentioning

confidence: 99%

Wetlands for environmental protection

Martinez‐Guerra

Ghimire

Nandimandalam

et al. 2020

Water Environment Research

View full text Add to dashboard Cite

This article presents an update on the research and practical demonstration of wetland-based treatment technologies for protecting water resources and environment covering papers published in 2019. Wetland applications in wastewater treatment, stormwater management, and removal of nutrients, metals, and emerging pollutants including pathogens are highlighted. A summary of studies focusing on the effects of vegetation, wetland design and operation strategies, and process configurations and modeling, for efficient treatment of various municipal and industrial wastewaters, is included. In addition, hybrid and innovative processes with wetlands as a platform treatment technology are presented.

show abstract

“…More significantly, the AlS-based wetland system has been integrated with a microbial fuel cell (MFC) to develop an MFC-CW system to simultaneously achieve the dual goals of wastewater treatment and bioelectricity generation [49][50][51][52]. Indeed, the embedding of MFC into AlS-based CW represents a significant development in CW systems in recent years.…”

Section: Reuse Of Als Cakes As Substrate In Constructed Treatment Wetmentioning

confidence: 99%

Application of Alum Sludge in Wastewater Treatment Processes: “Science” of Reuse and Reclamation Pathways

Zhao

Xie

et al. 2021

Processes

Self Cite

View full text Add to dashboard Cite

Alum sludge (AlS) refers to the inevitable by-product generated during the drinking water purification process, where Al-salt is used as a coagulant in the water industry. It has long been treated as “waste”, while landfill is its major final disposal destination. In fact, AlS is an underutilized material with huge potential for beneficial reuse as a raw material in various wastewater treatment processes. In the last two decades, intensive studies have been conducted worldwide to explore the “science” and practical application of AlS. This paper focuses on the recent developments in the use of AlS that show its strong potential for reuse in wastewater treatment processes. In particular, the review covers the key “science” of the nature and mechanisms of AlS, revealing why AlS has the potential to be a value-added material. In addition, the future focus of research towards the widespread application of AlS as a raw material/product in commercial markets is suggested, which expands the scope for AlS research and development.

show abstract

Role of macrophyte species in constructed wetland-microbial fuel cell for simultaneous wastewater treatment and bioenergy generation

Cited by 97 publications

References 34 publications

Response Characteristics of Nitrifying Bacteria and Archaea Community Involved in Nitrogen Removal and Bioelectricity Generation in Integrated Tidal Flow Constructed Wetland-Microbial Fuel Cell

Response Characteristics of Nitrifying Bacteria and Archaea Community Involved in Nitrogen Removal and Bioelectricity Generation in Integrated Tidal Flow Constructed Wetland-Microbial Fuel Cell

Wetlands for environmental protection

Application of Alum Sludge in Wastewater Treatment Processes: “Science” of Reuse and Reclamation Pathways

Contact Info

Product

Resources

About