Thickness-dependent release of microplastics and phthalic acid esters from polythene and biodegradable residual films in agricultural soils and its related productivity effects

Uzamurera, Aimee Grace; Wang, Peng-Yang; Zhao, Zhijuan; Tao, Xiu-Ping; Zhou, Rui; Wang, Wenying; Xiong, Xiao-Bin; Wang, Song; Wesly, Kiprotich; Tao, Hong-Yan; Xiong, You‐Cai

doi:10.1016/j.jhazmat.2023.130897

Cited by 35 publications

(5 citation statements)

References 67 publications

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“…This correlation arises because the breakdown of molecular chains within the plastic enlarges the porous volumes and creates larger surface areas, which in turn facilitate the release of smaller chemicals. 37 Therefore, the release rate of PAEs molecules may as well follow the normalized Gaussian distribution as expressed in eqn (3), with parameters valued according to the additive's performance.…”

Section: Plastic Additives Upon Photodegradationmentioning

confidence: 99%

The reciprocity principle in mulch film deterioration and microplastic generation

Bai,

Li,

Liu

et al. 2024

Environ. Sci.: Processes Impacts

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Section: Plastic Additives Upon Photodegradationmentioning

confidence: 99%

The reciprocity principle in mulch film deterioration and microplastic generation

Bai,

Li,

Liu

et al. 2024

Environ. Sci.: Processes Impacts

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“… Lozano and Rillig (2020) confirmed that PES MFs can improve soil aeration, root penetration, and soil porosity, which ultimately improves plant growth. However, in maize ( Zea mays L.), biodegradable MP residuals decreased soil bulk density, plant height, water-use efficiency (WUE), and grain yield as compared with PE MPs, thereby suggesting MP type-specific effects on grain yield ( Uzamurera et al., 2023 ). Such discrepancy in the aforementioned effects that MPs have on soil bulk density can be explained in terms of the variation of soil composition and soil physical properties.…”

Section: Microplastic Effects On Plant Growthmentioning

confidence: 99%

Microplastic stress in plants: effects on plant growth and their remediations

Jia,

Liu,

Zhang

et al. 2023

Front. Plant Sci.

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Microplastic (MP) pollution is becoming a global problem due to the resilience, long-term persistence, and robustness of MPs in different ecosystems. In terrestrial ecosystems, plants are exposed to MP stress, thereby affecting overall plant growth and development. This review article has critically analyzed the effects of MP stress in plants. We found that MP stress-induced reduction in plant physical growth is accompanied by two complementary effects: (i) blockage of pores in seed coat or roots to alter water and nutrient uptake, and (ii) induction of drought due to increased soil cracking effects of MPs. Nonetheless, the reduction in physiological growth under MP stress is accompanied by four complementary effects: (i) excessive production of ROS, (ii) alteration in leaf and root ionome, (iii) impaired hormonal regulation, and (iv) decline in chlorophyll and photosynthesis. Considering that, we suggested that targeting the redox regulatory mechanisms could be beneficial in improving tolerance to MPs in plants; however, antioxidant activities are highly dependent on plant species, plant tissue, MP type, and MP dose. MP stress also indirectly reduces plant growth by altering soil productivity. However, MP-induced negative effects vary due to the presence of different surface functional groups and particle sizes. In the end, we suggested the utilization of agronomic approaches, including the application of growth regulators, biochar, and replacing plastic mulch with crop residues, crop diversification, and biological degradation, to ameliorate the effects of MP stress in plants. The efficiency of these methods is also MP-type-specific and dose-dependent.

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“…Incidentally, thicker films were shown to perform better in terms of their benefit to the crops. Fields where thicker PE mulching films were applied had the highest grain yield, as well as a lower release of phthalic acid esters (PAEs) into soil compared to biodegradable films [ 27 ]. However, the choice of the mulching film thickness is, other than adhering to the minimum standards fixed by regulatory bodies, largely left to farmers, who are, in the study from Li et al in rural China, more influenced (44%) by the cost than by the performance for planting (23%) [ 28 ].…”

Section: Product Development: From Feedstock To Final Applicationsmentioning

confidence: 99%

Towards a Sustainable Future: Advancing an Integrated Approach for the Recycling and Valorization of Agricultural Plastics

Filipe,

Mourão,

Couto

et al. 2023

Polymers

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Plastic pollution has become a pressing environmental issue. The agricultural sector, in particular, is a significant contributor to this problem, given the widespread use of plastics in farming practices and a lack of and/or use of inefficient approaches for the recycling and valorization of agricultural plastic waste. This has resulted in the accumulation of these residues in landfills and/or their improper disposal, which has exacerbated their environmental impact, leading to negative consequences on soil, water, and ecosystems. This work provides an overview on the current methodologies available to address the challenges associated with inadequate management of agricultural plastics and highlights the need for a comprehensive and systematic methodology, involving material development, polymer processing, waste collection, sorting, and valorization. It emphasizes the importance of collaboration between polymer producers, polymer manufacturers, farmers, policymakers, waste management companies, and recyclers to develop effective, technical, and economically viable recycling and valorization schemes. This paper addresses gaps and provides guidance on possible solutions, specifically polymer development, policy instruments, regulatory frameworks, collection schemes, and the technical approaches required for the adequate valorization of agricultural plastic waste. Furthermore, it highlights the associated barriers and benefits of the different presented approaches. It also aims to promote awareness on agricultural plastic waste and provide guidance on the best approaches to reduce its environmental impact.

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Thickness-dependent release of microplastics and phthalic acid esters from polythene and biodegradable residual films in agricultural soils and its related productivity effects

Cited by 35 publications

References 67 publications

The reciprocity principle in mulch film deterioration and microplastic generation

The reciprocity principle in mulch film deterioration and microplastic generation

Microplastic stress in plants: effects on plant growth and their remediations

Towards a Sustainable Future: Advancing an Integrated Approach for the Recycling and Valorization of Agricultural Plastics

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