Microplastics and Climate Change: Unveiling Ecological Impacts and Addressing Research Gaps DOI Open Access
ANDREA NAVARRO JIMÉNEZ

Published: Aug. 28, 2024

Microplastics, pervasive in both terrestrial and aquatic ecosystems, have emerged as significant contributors to greenhouse gas (GHG) emissions, including carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O). This review synthesizes recent studies from 2019 2024, revealing the complex mechanisms through which microplastics influence GHG production. These include adsorption of nutrients pollutants onto microplastic surfaces their role substrates for microbial colonization. The impacts vary significantly across different environments, such agricultural soils marine sediments. underscores urgent need standardized methodologies long-term field accurately assess ecological consequences microplastics. Notably, (N2O), a potent with global warming potential nearly 300 times that CO2, remains underexplored context interactions, highlighting critical research gap. Additionally, synergistic effects other require further investigation fully understand cumulative impact on emissions. calls coordinated effort among researchers policymakers advance our understanding microplastics' budgets develop effective strategies mitigating environmental climatic impacts.

Language: Английский

Evaluation of nitrous oxide reduction in solid carbon source-driven counter-diffusional biofilm denitrification system DOI Creative Commons
Yingrui Liu, Feng Chen, Yanying He

et al.

Water Research X, Journal Year: 2025, Volume and Issue: 27, P. 100306 - 100306

Published: Jan. 22, 2025

Solid carbon-driven biofilm system can provide sufficient carbon source for denitrification, while its counter-diffusional structure could inevitably induce the delayed carbon-nitrogen contact and electron transport, further affecting footprints mainly contributed by nitrous oxide (N2O) at wastewater treatment plants (WWTPs). However, detailed understanding of N2O dynamics during solid-phase denitrification (SPD) has not been disclosed. In this work, a fixed bed bioreactor driven polycaprolactone (PCL) was constructed operated over 180 days, achieving 97 %-99 % total nitrogen (TN) removal efficiency. Biochemical results indicated that under condition each (NO x ) concentration maintained 30 mg-N/L, competition between upstream downstream pools still observed PCL-driven even providing source. For example, coexistent nitrate (NO3 -)+ nitrite (NO2 -)+N2O condition, few electrons (i.e., 12.6 %) distributed to reductase (Nos), significantly decreasing reduction rate 1.42 mg/g VSS/h). Under TN in scheme containing NO3 -+NO2 -+N2O be 1.75-2.3 times higher than with sole NO mg-N/L. This suggested when treating multiple , only relatively improve efficiency, but also alleviate emissions. The abundance Bacteroidota Comamonadaceae ensured stable release conversion states.

Language: Английский

Citations

3
PHA Microplastic Aging Decreases N2O Sink Capacity: Released γ-Butyrolactone Decouples Denitrifying Electron Transfer and Oxidative Phosphorylation DOI
Yu Zhang, Jing Lu,

Xiao-Zheng Zhang

et al.

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: 59(2), P. 1298 - 1307

Published: Jan. 9, 2025

Bacterial denitrification is a main pathway for soil N2O sinks, which crucial assessing and controlling emissions. Biobased polyhydroxyalkanoate (PHA) microplastic particles (MPs) degrade slowly in conventional environments, remaining inert extended periods. However, the impacts of PHA aging on bacterial sink capacity before degradation remain poorly understood. Here, model strain Paracoccus denitrificans was exposed to 0.05-0.5% (w/w) virgin aged MPs. Although no significant changes molecular weights were observed, MPs hindered cell growth reduction rates, leading surge 1H NMR spectroscopy UPLC-QTOF-MS analysis identified γ-butyrolactone as key component released from Metabolic verifications at cellular level confirmed its inhibition ATP synthesis. The that protonated hydrolyzed spontaneously periplasm would compete protons with ATPase destroy coupling between denitrifying electron transfer oxidative phosphorylation. Consequently, energy-deficient cells reduced supply reduction, did not contribute energy conservation. This work unveils novel mechanism by impairs highlights need consider environmental risks posed biobased aging.

Language: Английский

Citations

1
Less toxic combined microplastics exposure towards attached Chlorella sorokiniana in the presence of sulfamethoxazole while massive microalgal nitrous oxide emission under multiple stresses DOI
Ying Zhang, Mingzhi Shen, Jianxia Wang

et al.

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: 487, P. 137223 - 137223

Published: Jan. 14, 2025

Language: Английский

Citations

1
Biodegradable microplastics aggravate greenhouse gas emissions from urban lake sediments more severely than conventional microplastics DOI
Yanying He, Yiming Li,

Xianli Yang

et al.

Water Research, Journal Year: 2024, Volume and Issue: 266, P. 122334 - 122334

Published: Aug. 25, 2024

Language: Английский

Citations

5
Responses of SNEDPR-AGS system under long-term exposure of polyethylene terephthalate microplastics for treating low C/N wastewater: granular effect and microbial structure DOI
Dongyue Li,

Jiarui Li,

Yuhan Zhu

et al.

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: unknown, P. 136299 - 136299

Published: Oct. 1, 2024

Language: Английский

Citations

2
Enhancing sulfide and methane control in sewers: Unveiling the impact and mechanisms of free nitrous acid pre-exposure coupled with calcium peroxide dosing DOI
Haixiao Guo,

Suwan Dai,

Yiming Li

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 495, P. 153576 - 153576

Published: June 28, 2024

Language: Английский

Citations

0
Microplastics and Climate Change: Unveiling Ecological Impacts and Addressing Research Gaps DOI Open Access
ANDREA NAVARRO JIMÉNEZ

Published: Aug. 19, 2024

Microplastics, pervasive in both terrestrial and aquatic ecosystems, have emerged as significant contributors to greenhouse gas (GHG) emissions, including carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O). This review synthesizes recent studies from 2022 2024, revealing the complex mechanisms through which microplastics influence GHG production. These include adsorption of nutrients pollutants onto microplastic surfaces their role substrates for microbial colonization. The impacts vary significantly across different environments, such agricultural soils marine sediments. underscores urgent need standardized methodologies long-term field accurately assess ecological consequences microplastics. Notably, (N2O), a potent with global warming potential nearly 300 times that CO2, remains underexplored context interactions, highlighting critical research gap. Additionally, synergistic effects other require further investigation understand cumulative impact on emissions fully. calls coordinated effort among researchers policymakers advance our understanding microplastics' budgets develop effective strategies mitigating environmental climatic impacts.

Language: Английский

Citations

0
Microplastics and Climate Change: Unveiling Ecological Impacts and Addressing Research Gaps DOI Open Access
ANDREA NAVARRO JIMÉNEZ

Published: Aug. 28, 2024

Microplastics, pervasive in both terrestrial and aquatic ecosystems, have emerged as significant contributors to greenhouse gas (GHG) emissions, including carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O). This review synthesizes recent studies from 2019 2024, revealing the complex mechanisms through which microplastics influence GHG production. These include adsorption of nutrients pollutants onto microplastic surfaces their role substrates for microbial colonization. The impacts vary significantly across different environments, such agricultural soils marine sediments. underscores urgent need standardized methodologies long-term field accurately assess ecological consequences microplastics. Notably, (N2O), a potent with global warming potential nearly 300 times that CO2, remains underexplored context interactions, highlighting critical research gap. Additionally, synergistic effects other require further investigation fully understand cumulative impact on emissions. calls coordinated effort among researchers policymakers advance our understanding microplastics' budgets develop effective strategies mitigating environmental climatic impacts.

Language: Английский

Citations

0