Article ? AI-assigned paper type based on the abstract. Classification may not be perfect — flag errors using the feedback button. Tier 2 ? Original research — experimental, observational, or case-control study. Direct primary evidence. Environmental Sources Marine & Wildlife Remediation Sign in to save

Influences of microplastics types and size on soil properties and cadmium adsorption in paddy soil after one rice season

Resources Environment and Sustainability 2022 30 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 40 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Lanfang Han Yuanyuan Feng, Bingyu Wang, Yuanyuan Feng, Bingyu Wang, Qiuyue Zhang, Lanfang Han Lanfang Han Qiuyue Zhang, Lanfang Han Yuanyuan Feng, Bingyu Wang, Yuanyuan Feng, Yuanyuan Feng, Yanfang Feng, Lanfang Han Lanfang Han Lanfang Han Lanfang Han Lanfang Han Lanfang Han Lanfang Han Lanfang Han Yuanyuan Feng, Lanfang Han Bingyu Wang, Yuanyuan Feng, Lanfang Han Yanfang Feng, Yanfang Feng, Wenjing Guo, Yuanyuan Feng, Yuanyuan Feng, Yuanyuan Feng, Yanfang Feng, Lanfang Han Bingyu Wang, Yuanyuan Feng, Lanfang Han Lanfang Han Lanfang Han Lanfang Han Yanfang Feng, Lanfang Han Lanfang Han Huifang Xie, Huifang Xie, Yuanyuan Feng, Yanfang Feng, Lanfang Han Yuanyuan Feng, Qiuyue Zhang, Yuanyuan Feng, Yuanyuan Feng, Lanfang Han Lanfang Han Yuanyuan Feng, Qiuyue Zhang, Bingyu Wang, Lanfang Han Lanfang Han Lanfang Han Lanfang Han Yuanyuan Feng, Yanfang Feng, Yuanyuan Feng, Yanfang Feng, Yuanyuan Feng, Huifang Xie, Yanfang Feng, Yuanyuan Feng, Xiaoyu Liu, Bingyu Wang, Yuanyuan Feng, Chuang Zhang, Yuanyuan Feng, Yuanyuan Feng, Lanfang Han Yuanyuan Feng, Bingyu Wang, Lanfang Han Yanfang Feng, Huifang Xie, Yuanyuan Feng, Bingyu Wang, Xiaoyu Liu, Yuanyuan Feng, Yanfang Feng, Yanfang Feng, Xiaoyu Liu, Yanfang Feng, Yanfang Feng, Yanfang Feng, Yanfang Feng, Yanfang Feng, Lanfang Han Yanfang Feng, Yanfang Feng, Qiuyue Zhang, Xiaoyu Liu, Lanfang Han

Summary

Researchers grew rice in paddy soil amended with polyethylene, polyacrylonitrile, and PET microplastics of varying sizes and found that microplastic type and particle size significantly altered soil properties and cadmium adsorption capacity, with smaller particles generally having greater effects.

Polymers

PAN PE PET

Microplastics (MPs) were considered as emerging pollutants in soil. Cadmium (Cd) is the typical heavy metal contaminant in paddy soil in China. It was not unraveled that the effects of the existence of MPs on soil properties and Cd adsorption after rice growth in paddy soil, one of the most important soil types in China. In this study, several typical MPs in dosage of 0.5% (w/w) with different particle sizes, including polyethylene (PE, 200μm), polyacrylonitrile (PAN, 200μm), and polyethylene terephthalate (PET, 200 and 10μm), were selected and aged for a rice season (∼6 months) in paddy soil by column experiments. Some essential physicochemical properties of paddy soil collected from different treatments and the adsorption performance of typical metal contaminants (cadmium, Cd) in paddy soil with MPs coexisting were compared. The results indicated that the 6-month existence of 200μm MPs increased water content (15.94% to 26.08-30.30%), pH value (7.05 to 7.16–7.33), organic matter (OM) content (15.1 gkg −1 to 18.2–22.9 gkg −1), the percentage of soil sand and Cd adsorption capacity of paddy soil, whereas decreased soil cation exchange capacity (CEC), the percentage of soil clay and silt. The adsorption experiments of Cd in soil showed that the adsorption behavior was consistent with the pseudo-second order and Langmuir isotherm model, and the addition of MPs would increase the adsorption capacity of Cd in soil. Besides, the particle size of MPs was found to be one of the dominant factors, in which MPs with smaller particle size (10μm) favored the increase of water content, pH, OM content, CEC, and adsorption performance with Cd. The results of this study could provide a supplemental understanding of the effect of MPs input on the paddy soil ecosystem, including the soil properties and the bioavailability and transport of metal in paddy soil.

Read via DOI Download PDF

Share this paper

Post Share Share Pin Email