Technological solutions to landfill management: Towards recovery of biomethane and carbon neutrality

Journal of Environmental Management, Год журнала: 2024, Номер 354, С. 120414 - 120414

Опубликована: Фев. 26, 2024

Язык: Английский

---

Immobilization: the promising technique to protect and increase the efficiency of microorganisms to remove contaminants

Journal of Chemical Technology & Biotechnology, Год журнала: 2024, Номер 99(8), С. 1707 - 1733

Опубликована: Март 8, 2024

Abstract Biodegradation of pollutants is one the most economical methods for their removal and usually accompanied by no production toxic by‐products. In general, this approach favored over others because it offers reduced expenses potential complete mineralization. order to enhance viability longevity bioremediation agents within polluted areas, becomes necessary immobilize cells. Cell immobilization refers procedure confining intact cells specific areas a device or material, without compromising essential biological functions. A wide variety carriers approaches have been used restriction various Immobilization techniques, such as microencapsulation, opened up new possibilities in biotechnology facilitating development artificial organs, cell therapies drug delivery systems. Researchers found promising outcomes applications through microorganisms. This enhances stability, reusability catalytic efficiency, making valuable strategy biocatalysis, other biotechnological processes. Notably, use immobilized microorganisms has led significant improvements pollutants, with some studies achieving 100% efficiency. When comparing degradation between free same time period, results demonstrated that achieved efficiency >21% more than microbial consortia. The primary objective review give an overview key scientific aspects related using cells, particular focus on techniques entrap © 2024 Society Chemical Industry (SCI).

Язык: Английский

---

High H2O2 production in membrane-free electrolyzer via anodic bubble shielding towards robust rural disinfection

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Фев. 22, 2025

Hydrogen peroxide (H2O2) can be sustainably synthesized through the electrochemical oxygen reduction reaction in a dual-chamber water electrolyzer separated by expensive ion exchange (IX) membranes. The development of an IX membrane-free has been limited direct anodic degradation produced H2O2. Here, we devise bubble shielding strategy using low-cost polytetrafluoroethylene hydrophobic porous layer (HPL) on anode that enables numerous sites for anodically generated bubbles and significantly suppresses H2O2 electrolyte. production increases ~600% compared to non-bubble shielded anode. A high concentration 10.05 ± 0.05 g L−1 at 40 mA cm−2 obtained with both HPL-coated cathode. solar-driven disinfection device equipped electrodes achieves >99.9% E. coli inactivation within 60 min. This innovative approach achieving concentrations electrolyzers more generally provides insights fine tuning three-phase interfaces could applicable other reactions pathways applications. economical electrosynthesis is authors report suppress reverse engineering gas-water-electrode interface, thus enabling electrolyzer.

Язык: Английский

---

Long-term operation of cathode-enhanced ecological floating bed coupled with microbial electrochemical system for urban surface water remediation: From lab-scale research to engineering application

Water Research, Год журнала: 2023, Номер 237, С. 119967 - 119967

Опубликована: Апрель 11, 2023

Язык: Английский

---

Recovery of electron and carbon source from agricultural waste corncob by microbial electrochemical system to enhance wastewater denitrification

The Science of The Total Environment, Год журнала: 2023, Номер 878, С. 162926 - 162926

Опубликована: Март 16, 2023

Язык: Английский

---

Insights into the Electron Transfer Behaviors of a Biocathode Regulated by Cathode Potentials in Microbial Electrosynthesis Cells for Biogas Upgrading

Environmental Science & Technology, Год журнала: 2023, Номер 57(16), С. 6733 - 6742

Опубликована: Апрель 10, 2023

Bioelectrochemical-based biogas upgrading is a promising technology for the storage of renewable energy and reduction global greenhouse gas emissions. Understanding electron transfer behavior between electrodes biofilm crucial development this technology. Herein, pathway its catalytic capability that responded to cathode potential during electromethanogenesis process were investigated. The result suggested dominant shifted from direct (DET) indirect (IDET) way when decreasing −0.8 V (Bio-0.8 V) −1.0 (Bio-1.0 referred Ag/AgCl. More IDET-related redox substances high content hydrogenotrophic methanogens (91.9%) observed at Bio-1.0 V, while more DET-related (82.3%) detected Bio-0.8 V. H2, as an important mediator, contributed up 72.9% total CH4 yield but only ∼17.3% Much higher performance in terms production rate, final content, carbon conversion rate was obtained with This study provides insight into mixed culture constructed upgrading.

Язык: Английский

---

Sustainable Organic Waste Management and Future Directions for Environmental Protection and Techno-Economic Perspectives

Current Pollution Reports, Год журнала: 2024, Номер 10(3), С. 459 - 477

Опубликована: Июль 5, 2024

Язык: Английский

---

Utilizing different food cultures for wastewater treatment and enhanced power generation in microbial fuel cells

Biomass and Bioenergy, Год журнала: 2025, Номер 195, С. 107706 - 107706

Опубликована: Фев. 17, 2025

Язык: Английский

---

Insight into the Pseudocapacitive Behavior of Electroactive Biofilms in Response to Dynamic-Controlled Electron Transfer and Metabolism Kinetics for Current Generation in Water Treatment

Environmental Science & Technology, Год журнала: 2023, Номер 57(48), С. 19891 - 19901

Опубликована: Ноя. 24, 2023

Electroactive biofilms (EBs) engage in complex electron transfer and storage processes involving intracellular extracellular mediators with temporary capabilities. Consequently, electroactive exhibit pseudocapacitive behaviors during substrate degradation processes. However, comprehensive systematic research this area has been lacking. This study demonstrated that the property was an intrinsic characteristic of EBs. represents dynamic-controlled is critical current generation, unlike noncapacitive responses. Nontransient charge discharge experiments revealed a correlation between capacitive accumulation generation Additionally, analysis suggested maximum power density (Pmax) changed kinetic constants COD degradation, pseudocapacitances EBs directly proportional to Pmax. The interaction networks key latent variables were evaluated through partial least-squares path modeling analysis. results indicated cytochrome c closely associated formation pseudocapacitance In conclusion, can be considered valuable indicator for assessing behavior Pseudocapacitive have potential efficiently regulate biological reactions serve as promising carbon-neutral renewable strategy energy storage. An in-depth understanding undoubtedly advance development concept future.

Язык: Английский

---

Sorting Out the Latest Advances in Separators and Pilot-Scale Microbial Electrochemical Systems for Wastewater Treatment: Concomitant Development, Practical Application, and Future Perspective

Environmental Science & Technology, Год журнала: 2024, Номер 58(22), С. 9471 - 9486

Опубликована: Май 22, 2024

To date, dozens of pilot-scale microbial fuel cell (MFC) devices have been successfully developed worldwide for treating various types wastewater. The availability and configurations separators are determining factors the economic feasibility, efficiency, sustainability, operability these devices. Thus, concomitant advances between MFC deserve further clarification. analysis separator has shown that their evolution proceeds as follows: from ion-selective to ion-non-selective, nonpermeable permeable, abiotic biotic. Meanwhile, cost is decreasing increasing. Notably, novel MFCs configured with biotic superior those in terms wastewater treatment efficiency capital cost. Herein, a highly comprehensive review (>100 L) conducted, we conclude intensive stack liquid cathode configuration more advantageous when highest priority. use permeable ensures hydrodynamic continuity within simplifies reactor operation. In addition, systemic comparison conducted conventional decentralized processes. showed comparable cost, higher long-term stability, significant superiority carbon emission reduction. development greatly contributed usability MFCs, which will play an important role scenarios future.

Язык: Английский

---