We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
The UltravioletIrradiation Aging Characteristicsof Microplastics in Soil under the Action of Biochar
Summary
Researchers investigated how biochar application at four concentrations affects UV-induced aging of both persistent polyethylene microplastics and biodegradable PBAT microplastics in soil, finding that biochar modulates the aging behavior and physicochemical transformation of microplastics under ultraviolet irradiation.
Microplastics (MPs) coexist with biochar (BC) in soil. However, studies of the effects of BC application on MP aging in soils are few. Therefore, this study investigated the BC-mediated aging behavior of persistent microplastics (PMPs) and biodegradable microplastics (BMPs). Ultraviolet (UV) irradiation was used as the aging method, and four BC concentrations were applied to soil containing PMP-polyethylene (PE) and BMP-polybutylene adipate terephthalate (PBAT), which was analyzed to assess the effects of different BC concentrations on MP aging behavior in soil. The results revealed that the addition of BC accelerated the surface aging of PE and PBAT. Changes in carbonyl index (CI) and hydroxyl index (HI) indicated that high BC concentrations promoted UV-irradiation aging of PE and PBAT. Overall, 2 and 4% BC play a positive role in the formation of −OH groups in PE and PBAT. PE was susceptible to electrophilic attack, whereas PBAT underwent both electrophilic and nucleophilic attack.
Sign in to start a discussion.
More Papers Like This
The Ultraviolet Irradiation Aging Characteristics of Microplastics in Soil under the Action of Biochar
Researchers characterized how microplastics change physically and chemically under ultraviolet irradiation aging, documenting surface cracking, yellowing, and shifts in chemical functional groups. These aging signatures are important for understanding the environmental fate and increased toxicity of weathered microplastics.
Combined effect of biochar and soil moisture on soil chemical properties and microbial community composition in microplastic‐contaminated agricultural soil
Biochar was applied to microplastic-contaminated agricultural soil under different moisture conditions, with results showing that biochar improved soil chemical properties and shifted microbial communities in ways that partially offset microplastic-induced degradation. The study suggests biochar as a practical soil amendment to mitigate microplastic impacts in farming systems.
Biochar mitigates microplastic‐induced destabilization of soil organic carbon via molecular recalcitrance and microbial process regulation
Biochar amendments to soil were shown to offset the destabilizing effects that microplastics have on soil aggregate structure. The finding suggests that biochar could be a practical soil amendment to counteract microplastic-driven soil degradation in contaminated agricultural lands.
Biochar alters chemical and microbial properties of microplastic-contaminated soil
Researchers found that biochar amendments improved chemical and microbial properties of microplastic-contaminated soil, with effects varying by biochar type and water conditions, suggesting biochar as a potential remediation tool for plastic-polluted agricultural soils.
Role of Biochar and Microbes in Remediation of Microplastics in Soil
This review examines how biochar and soil microbes can be combined to remediate microplastic-contaminated soils, synthesizing evidence for biochar's adsorption capacity and microbial degradation pathways that reduce microplastic persistence and toxicity.