We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Evaluating Microplastic Effects on Performance and Electrochemistry of Microbial Fuel Cells for Wastewater Treatment
Summary
Researchers evaluated how microplastics affect the performance of microbial fuel cells used for wastewater treatment. They found that low concentrations of microplastics actually improved chemical oxygen demand reduction and power production compared to wastewater without microplastics. However, at higher concentrations the beneficial effects diminished, suggesting that microplastic levels in wastewater could influence the efficiency of bioelectrochemical treatment systems.
Microplastics (MPs) that are contained in water pose a great threat to the ecological environment, because they have the potential to biomagnify in the food chain, which negatively affects higher trophic level animals that include humans. In addition, they could adsorb several contaminants onto their surface due to their high adsorption capability, which poses a great risk of diseases in higher life forms. Microbial fuel cells (MFCs) can simultaneously treat MP-containing wastewater and produce value-added by-products in the form of bioelectricity; therefore, recent research is more focused on this area. This work explored the effect of MPs on chemical oxygen demand (COD) reduction, power production, and an electrochemical behavior study of the system with cyclic voltammetry (CV). The results of this work show that MPs in low concentrations (25–400 mg/L) in synthetic wastewater treatment had a more positive effect on COD reduction and power production than synthetic wastewater with no MPs and 1,000 mg/L MP.
Sign in to start a discussion.
More Papers Like This
Investigation of the influence of polystyrene microplastics in wastewater on anode biofilm viability and electron transfer in microbial fuel cells performance
Researchers found that polystyrene microplastics in wastewater reduce the electricity-generating ability of microbial fuel cells — devices that use bacteria to turn waste into power — by disrupting the bacterial biofilms that transfer electrons to electrodes. Carbon-based electrodes were more resistant to microplastic interference than metal ones, suggesting material choice matters when designing systems treating microplastic-contaminated water.
Effects of multi-microplastic mixtures on the performance of constructed wetland microbial fuel cells for wastewater treatment
Researchers tested how mixtures of four common microplastic types affect the performance of constructed wetland microbial fuel cells used for wastewater treatment. They found that while microplastics had minimal impact on organic matter removal, nitrogen removal efficiency dropped by about 20% due to suppression of key denitrifying bacteria. Interestingly, microplastics enhanced electricity generation by enriching electroactive bacteria like Geobacter in the fuel cell systems.
Using dual chamber microbial fuel cells for coupled microplastic biodegradation and bioelectricity production: assessing the effect of substrate
Researchers investigated using dual-chamber microbial fuel cells to simultaneously biodegrade PET microplastics and generate bioelectricity. The study found that microbial consortia in the fuel cell setup could break down microplastics while producing usable electrical energy, offering a potentially sustainable approach to microplastic remediation in wastewater treatment.
Impact of separate concentrations of polyethylene microplastics on the ability of pollutants removal during the operation of constructed wetland-microbial fuel cell
Researchers investigated how polyethylene microplastics at different concentrations affect constructed wetland microbial fuel cells over 360 days, finding that COD and phosphorus removal remained stable but nitrogen removal and power generation declined as microplastic concentrations increased.
Electrochemically Coupled Anaerobic Membrane Bioreactor Facilitates Remediation of Microplastic-Containing Wastewater
Researchers tested an electrochemically coupled anaerobic membrane bioreactor for treating microplastic-containing wastewater and found that electrical stimulation effectively counteracted the inhibitory effects of microplastics on microbial metabolism. The system improved methane production, microbial viability, and enzyme activity compared to conventional anaerobic treatment in the presence of microplastics. The study suggests that combining electrochemical and biological approaches could improve both wastewater treatment efficiency and energy recovery when microplastics are present.