The role of microbial electrogenesis in regulating methane and nitrous oxide emissions from constructed wetland-microbial fuel cell

Liu, Shentan; Xue, Hongpu; Wang, Mixue; Feng, Xiaojuan; Lee, Hyung-Sool

doi:10.1016/j.ijhydene.2022.06.063

Cited by 15 publications

(4 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This trend is consistent with previous studies showing a strong correlation between CH 4 emissions with CWs and the inflow load of organic carbon [15,31,32]. In this study, the addition of glucose to adjust the influent C/N ratio provides a direct energy source for microorganisms to meet their metabolic needs [33]. Additionally, the excess organic matter in the system caused a depletion of DO, creating an anoxic environment in the CW that promoted the growth of methanogens and subsequently increased CH 4 emissions.…”

Section: Effect Of C/n Ratio On Ghg Emissions From Sfcwssupporting

confidence: 93%

Characteristics of Greenhouse Gas Emissions from Constructed Wetlands Vegetated with Myriophyllum aquatic: The Effects of Influent C/N Ratio and Microbial Responses

Wang,

Li,

et al. 2024

Water

View full text Add to dashboard Cite

This study designed surface flow constructed wetlands (SFCWs) with Myriophyllum aquaticum (M. aquaticum) to evaluate how different influent C/N ratios (0:1 (C0N), 5:1 (C5N), 10:1 (C10N), and 15:1 (C15N)) affect pollutant removal, greenhouse gas (GHG) emissions, and microbial communities. The results showed that effluent ammonia nitrogen (NH4+-N), nitrate nitrogen (NO3−-N), and total nitrogen (TN) concentrations decreased, but effluent chemical oxygen demand (COD) concentration increased with increasing influent C/N ratios. The highest removal rates of TN (73.17%) and COD (74.56%) were observed with C5N. Regarding GHG emissions, a few changes in CO2 fluxes were caused by the influent C/N ratio, whereas CH4 fluxes obviously increased with the increasing influent C/N ratio. The highest N2O emission occurred with C0N (211.03 ± 44.38 mg-N·m−2·h−1), decreasing significantly with higher C/N ratios. High-throughput sequencing revealed that different influent C/N ratios directly influenced the microbial distribution and composition related to CH4 and N2O metabolism in SFCWs. The highest abundance (46.24%) of denitrifying bacteria (DNB) was observed with C5N, which helped to achieve efficient nitrogen removal with a simultaneous reduction in N2O emissions. Methanogen abundance rose with higher C/N ratios, whereas methanotrophs peaked under C5N and C10N conditions. Additionally, the random forest model identified influent C/N ratio and Rhodopseudomonas as primary factors influencing CH4 and N2O emissions, respectively. This highlights the importance of the influent C/N ratio in regulating both pollutant removal and GHG emissions in constructed wetlands.

show abstract

Section: Effect Of C/n Ratio On Ghg Emissions From Sfcwssupporting

confidence: 93%

Characteristics of Greenhouse Gas Emissions from Constructed Wetlands Vegetated with Myriophyllum aquatic: The Effects of Influent C/N Ratio and Microbial Responses

Wang,

Li,

et al. 2024

Water

View full text Add to dashboard Cite

show abstract

“…It has been observed that the advantage of collaborations is not limited to the exchange of knowledge, expansion of the network, and shared experience; if not also to a strategy to rank up until now effective, as demonstrated lines above. The document with the greatest impact in 2022 was the one published by Wang et al, 2022, in which they used pig wastewater waste in single-chamber MFCs with anaerobic digestion, managing to generate electrical current peaks of approximately 20 mA in 16 days; they likewise identified at the genus level the species Methanobacterium, Methanocorpusculum, Methanosarcina, and Methanoculleus mainly [46].…”

Section: Results and Analysismentioning

confidence: 99%

“…In this sense, as can be seen in Figure 7, the terms wastewater treatment, electricity, microbial fuel cells, electrolytic reduction, and oxygen are the most used by researchers for the preparation of manuscripts, although the authors with the most citations and most citations over the last thirty-two years are working with electrodes modified with nanostructures in wastewater treatment. The method of anaerobic digestion combined with chemical and thermochemical processes is the most used in water treatment; for example, in the extraction of lipids by thermochemistry [58][59][60][61][62][63]67,68]. Other types of combined technologies are those that include pyrolysis, liquefaction, and gasification for the production of fuels through wastewater [63,64].…”

Section: Results and Analysismentioning

confidence: 99%

“…nanostructures in wastewater treatment. The method of anaerobic digestion combined with chemical and thermochemical processes is the most used in water treatment; for example, in the extraction of lipids by thermochemistry [58][59][60][61][62][63]67,68]. Other types of combined technologies are those that include pyrolysis, liquefaction, and gasification for the production of fuels through wastewater [63,64].…”

Section: Results and Analysismentioning

confidence: 99%

See 1 more Smart Citation

An Analysis of Global Trends from 1990 to 2022 of Microbial Fuel Cells: A Bibliometric Analysis

et al. 2023

View full text Add to dashboard Cite

Microbial fuel cells have undergone several modifications since their creation, mainly due to the different substrates that can be used as fuel for the generation of electrical energy. In this research, a deep and updated analysis of the characteristics of the literature published in the Scopus database from 1990 to 30 December 2022 has been carried out, finding 7055 documents indexed. The most used keywords are microbial fuel cells, performance, and electricity generation. From 2011 to the present, 5289 article-type documents were published; the article entitled “Microbial Fuel Cells: Methodology and Technology” by Logan B. E. et al. (2006) from Pennsylvania State University, USA in the Environmental Science and Technology journal of the ACS publisher was the most cited (4496 citations). On the other hand, in recent years, Chinese universities have begun to produce and highlight a number of documents positioning in the top ten, with six universities having the greatest presence in publications and as the country with the highest number of published and indexed documents (2773) in Scopus. Research on microbial fuel cells tends to grow, with China as a leading country on the subject, written by the author Wang X. It is observed that the new cell research trends deal with the modification and fabrication of electrodes with nanomaterials in order to improve their power and reduce costs to show their viability on a larger scale.

show abstract

Plant‐Based‐Microbial Fuel Cells for Bioremediation, Biosensing, and Plant Health Monitoring

Regmi,

Nguyen,

Sapkota

2024

Photosynthesis‐Assisted Energy Generation

View full text Add to dashboard Cite

The role of microbial electrogenesis in regulating methane and nitrous oxide emissions from constructed wetland-microbial fuel cell

Cited by 15 publications

References 47 publications

Characteristics of Greenhouse Gas Emissions from Constructed Wetlands Vegetated with Myriophyllum aquatic: The Effects of Influent C/N Ratio and Microbial Responses

Characteristics of Greenhouse Gas Emissions from Constructed Wetlands Vegetated with Myriophyllum aquatic: The Effects of Influent C/N Ratio and Microbial Responses

An Analysis of Global Trends from 1990 to 2022 of Microbial Fuel Cells: A Bibliometric Analysis

Plant‐Based‐Microbial Fuel Cells for Bioremediation, Biosensing, and Plant Health Monitoring

Contact Info

Product

Resources

About