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61,005 resultsShowing papers similar to Biochar alleviates adverse effects of polystyrene microplastics on anaerobic digestion performance of food waste and antibiotic resistance gene propagation
ClearBiochar amendment to advance contaminant removal in anaerobic digestion of organic solid wastes: A review
This review examined how biochar amendment improves anaerobic digestion of organic solid wastes by enhancing biodegradation, reducing inhibitory substances, and facilitating removal of contaminants such as antibiotics, heavy metals, microplastics, and PAHs, proposing mechanisms by which biochar's porous and conductive properties drive these benefits.
Evaluation the impact of polystyrene micro and nanoplastics on the methane generation by anaerobic digestion
Researchers tested the effect of polystyrene microplastics and their leached chemical additives on anaerobic digestion systems, finding that microplastic presence reduced methane generation efficiency and disrupted microbial community function.
Effect of aged biochar after microbial fermentation on antibiotics removal: Key roles of microplastics and environmentally persistent free radicals
Researchers prepared biochar from sludge containing varying amounts of polystyrene and tested its ability to remove antibiotics after microbial aging. The study found that while aging reduced biochar's surface area and removal efficiency by 6-14%, increasing the polystyrene content actually improved antibiotic removal due to the positive effects of environmentally persistent free radicals.
Methanosarcina thermophila bioaugmentation and its synergy with biochar growth support particles versus polypropylene microplastics in thermophilic food waste anaerobic digestion
Researchers found that combining biochar with Methanosarcina thermophila bioaugmentation improved methane yields in thermophilic anaerobic digestion of food waste, while polypropylene microplastics used as a comparison growth support showed different performance, highlighting biochar as a promising additive for optimizing digestion systems.
The effect of bulk-biochar and nano-biochar amendment on the removal of antibiotic resistance genes in microplastic contaminated soil
Researchers tested whether bulk-biochar and nano-biochar amendments could reduce antibiotic resistance genes in microplastic-contaminated soil. They found that microplastics initially increased the abundance of resistance genes, but both biochar types effectively inhibited their spread regardless of microplastic presence. The study suggests that biochar amendment is a promising strategy for managing antibiotic resistance in soils co-contaminated with microplastics.
Effects of polypropylene microplastics on digestion performance, microbial community, and antibiotic resistance during microbial anaerobic digestion
Researchers studied how polypropylene microplastics affect the anaerobic digestion process used to treat wastewater sludge. While small amounts of microplastics slightly increased methane production, they also promoted the spread of antibiotic resistance genes among bacteria in the digesters. This means microplastics in wastewater systems could contribute to the growing problem of antibiotic-resistant bacteria, which poses a serious threat to human health.
Granular activated carbon remediates antibiotic resistance propagation and methanogenic inhibition induced by polystyrene nanoplastics in sludge anaerobic digestion
Researchers found that adding granular activated carbon to sludge anaerobic digestion systems can counteract the negative effects caused by polystyrene nanoplastics, including the spread of antibiotic resistance genes and reduced methane production. The study suggests that granular activated carbon promotes direct interspecies electron transfer, offering a practical approach to remediate nanoplastic contamination in wastewater treatment.
Size-dependent effects of polystyrene microplastics on anaerobic digestion performance of food waste: Focusing on oxidative stress, microbial community, key metabolic functions
Researchers investigated how polystyrene microplastics of different sizes affect anaerobic digestion of food waste and found that smaller particles caused greater inhibition of methane production, with reductions up to 33%. The study suggests that small microplastics induce more oxidative stress in microbial communities and suppress key enzymes involved in methane-producing metabolic pathways.
Polystyrene nanoplastics shape microbiome and functional metabolism in anaerobic digestion
Researchers studied how polystyrene nanoplastics and microplastics affect the microbial communities and biochemical processes in anaerobic digestion systems used for waste treatment. They found that nanoplastics had a more disruptive effect than microplastics, significantly altering the composition and metabolic functions of the microbial community. The study suggests that plastic contamination in waste streams could reduce the efficiency of anaerobic digestion, a widely used waste processing technology.
Black carbon derived from pyrolysis of maize straw and polystyrene microplastics affects soil biodiversity
Researchers found that black carbon produced from co-pyrolysis of maize straw and polystyrene microplastics alters soil microbial diversity and community structure, with effects depending on the ratio of straw to microplastic feedstock, raising concerns about using pyrolysis biochar in agricultural soils.
Biochar and Granular Activated Carbon Mitigate Polystyrene Nanoplastics Inhibition in Dark Biohydrogen Fermentation of Sludge
Researchers found that nanoplastics commonly present in sewage sludge inhibit biohydrogen production during fermentation, but adding biochar or granular activated carbon can counteract this effect. Granular activated carbon was especially effective, recovering up to 64% of lost biohydrogen production by reducing the oxidative stress caused by the nanoplastics. The study demonstrates a practical approach to maintaining bioenergy recovery from sludge even when it is contaminated with plastic particles.
Deciphering the role of polystyrene microplastics in waste activated sludge anaerobic digestion: Changes of organics transformation, microbial community and metabolic pathway
Researchers found that polystyrene microplastics in sewage sludge affected the anaerobic digestion process used to treat waste, with low concentrations slightly boosting methane production but high concentrations reducing it by up to 11%. The microplastics disrupted key bacterial communities and enzyme activities needed for proper waste breakdown. This matters because wastewater treatment plants handle enormous volumes of microplastic-laden sludge, and impaired digestion could reduce treatment effectiveness and release more pollutants into the environment.
Evaluating the role of biochar in mitigating the inhibition of polyethylene nanoplastics on anaerobic granular sludge
Researchers found that biochar addition effectively mitigated the inhibitory effects of polyethylene nanoplastics on anaerobic granular sludge, restoring methane production by reducing oxidative stress and improving microbial community stability.
Deciphering the inhibitory mechanisms of polystyrene microplastics on thermophilic methanogens from the insights of microbial metabolite profiling and metagenomic analyses
Researchers studied how polystyrene microplastics affect methane production during the thermophilic anaerobic digestion of food waste. They found that increasing microplastic concentrations reduced methane yield by up to 47.8%, driven by the accumulation of reactive oxygen species that inhibited key enzymes in the digestion process. Metagenomic analysis revealed that microplastics downregulated genes involved in methane metabolism, providing new insights into how plastic contamination can disrupt waste treatment systems.
Effects of excess sludge composting process, environmentally persistent free radicals, and microplastics on antibiotics degradation efficiency of aging biochar
Researchers examined how microplastics (specifically polystyrene) added to sewage sludge affect a biochar's long-term ability to degrade antibiotics in compost environments. After composting, the antibiotic-degrading efficiency of biochar decreased — and decreased more when polystyrene microplastics were present — primarily because composting reduced the reactive free radicals that drive antibiotic breakdown. This matters because biochar is increasingly proposed as a tool for removing antibiotic contaminants from waste streams, and microplastic co-contamination of sludge could undermine this function over time.
Impacts of microplastic type on the fate of antibiotic resistance genes and horizontal gene transfer mechanism during anaerobic digestion
Researchers examined how three types of microplastics affect antibiotic resistance genes during the anaerobic digestion of sewage sludge. They found that while microplastics actually increased methane production, they also decreased the overall abundance of antibiotic resistance genes but changed how those genes spread between bacteria. The study reveals a complex interaction where microplastics may reduce some resistance genes while promoting the horizontal transfer of others during waste treatment.
[Effects of Typical Microplastics on Methanogenesis and Antibiotic Resistance Genes in Anaerobic Digestion of Sludge].
Researchers explored the impacts of polyamide, polyethylene, and polypropylene microplastics on methanogenesis and antibiotic resistance gene dynamics during anaerobic digestion of waste sludge, examining how microplastic contamination affects both biogas production and resistance gene enrichment.
Advances and prospects of biochar in improving soil fertility, biochemical quality, and environmental applications
This review examines how biochar, a charcoal-like material made from organic waste, can improve soil health and clean up pollutants including microplastics. Biochar's ability to absorb and trap contaminants makes it a promising tool for reducing microplastic pollution in agricultural soil. The findings suggest biochar could help limit the amount of microplastics that enter the food chain through crops grown in contaminated soil.
Biochar's Effects and Operations on Microbial Life within the Soil Ecosystem- A Review
Not directly relevant to microplastics — this review examines how biochar additions to soil affect microbial community structure, enzymatic activity, and contaminant transformation, without a specific focus on microplastics.
Insight into effects of polyethylene microplastics in anaerobic digestion systems of waste activated sludge: Interactions of digestion performance, microbial communities and antibiotic resistance genes
Polyethylene microplastics in anaerobic digestion systems processing waste activated sludge increased hydrolysis efficiency at 1 mm particle sizes but also altered microbial community composition and enriched antibiotic resistance genes. The findings suggest that MPs in sludge management pose risks for spreading ARGs through land application of digested biosolids.
Enhancing microplastics biodegradation during composting using livestock manure biochar
Researchers tested whether adding livestock manure biochar to composting systems could enhance the breakdown of biodegradable microplastics. They found that biochar significantly accelerated the decomposition of polyhydroxyalkanoate microplastics by enriching beneficial microbial communities and improving composting conditions. The study suggests that biochar-enhanced composting could be a practical strategy for reducing biodegradable microplastic contamination in organic waste.
Biochar counteracts the negative effects of microplastics on physiological and biochemical characteristics and leaf metabolism in Zea mays L
Researchers studied whether biochar could counteract the harmful effects of microplastics on maize plant growth and soil health. They found that adding biochar to microplastic-contaminated soil restored antioxidant enzyme balance, improved beneficial metabolic pathways in leaves, and increased bacterial community diversity. The study suggests biochar may help plants resist microplastic-induced stress by boosting glucose metabolism in root systems.
Performance and Mechanism of Sulfathiazole Adsorption by Magnetic Biochar: Promoting Effect of Co-existing Polystyrene and Simultaneous Removal
Researchers synthesized a magnetic biochar and tested its ability to remove the antibiotic sulfathiazole from water containing polystyrene microplastics, finding that the biochar achieved efficient removal of both contaminants simultaneously, with the microplastics actually promoting antibiotic adsorption.
Exposure to polystyrene nanoplastic leads to inhibition of anaerobic digestion system
Researchers showed that polystyrene nanoplastics inhibit methane production in sewage sludge digesters in a concentration-dependent manner, reducing methane yield by up to 14% and delaying the process start-up while shifting microbial community composition away from key methane-producing archaea.