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The Environmental Toxicology Group uses chemistry, environmental engineering, and energy engineering knowledge. Research delves into both fundamental theories and real-world applications. The research examines the impact of different pollutants on ecosystems, food chains, and the well-being of humanity.

EPA: Conducting an Ecological Risk Assessment

Keang Kimleng

IGP-A (MEXT Scholarship), Energy Course, D1 student

Effects of microplastics on interspecies energy storage, conversion and transfer, environmental policy

Microplastics (MPs) are a pressing environmental concern, captivating scientists and the public due to their small size and persistent presence. Easily ingested by marine organisms, MPs pose threats to ecosystems and human health. Despite their minuscule scale, MPs present complex risks, with their biological mechanisms not fully understood. To accurately assess these risks, understanding interactions between MPs, exposure levels, and other pollutants is crucial.

Therefore, through this research, studying the impact of microplastics (MPs) on Chlorella, Daphnia, and Zebrafish, considering variations in materials, shapes, sizes, polymer types, exposure conditions, and combinations with other chemicals will be conducted.

Develop an Ecological Risk Assessment (ERA) framework, including hazard, exposure, effects, and risk characterization will be obtained. Consequently, Ecological Network Analysis (ENA) will be built to map interactions and tropic relationships within the ecosystem. 

Kimleng‘s research.png

Snehal Wasnik

IGP-C, GEDES Course, D1 student

Uptake and Effect of Cocktail of Tire Rubber Particle on Paddy

The global production of tire has reached over 19.25 million tonnes in 2019 and is projected to increase by 3.4% in 2024. Currently, there are over 1.47 billion automobiles on the roads. While driving, braking and accelerating the automobiles produce the Tire Were Particles (TWPs), and there are emitting 5.9 million tons/year tire particles in environments. The Crumb rubber (CR) generated form the playground and spores fields also contribute into environment. These tire rubber particles enter into the agriculture files through the various ways, such as road runoff and sludge form the wastewater treatment plants that use biosolids as fertilisers. Both TWR and CR contain a complex mixture of metals and chemical additives. Our research will explore the effect of both the particle forms and their leachate seep into paddy fields.



IGP-C, Energy Course, M1 student

Assessment of toxic effects of quantum dots on trophic transfer and energy transfer.

A variety of engineered nanoparticles, such as carbon nanotubes, quantum dots, metal-containing nanoparticles have been extensively used in numerous consumer goods, including detergents, printing, paints, cosmetics, bactericides, coatings, computer electronics, sunscreen, tires and drug delivery systems. Quantum dots, also known as semiconductor crystals, are a class of inorganic fluorophores with outstanding photophysical properties that are being increasingly used in medical imaging and industry.

With the rapid development in commercial and biomedical applications of quantum dots(QDs), this kind of new pollutant may eventually enter the environment. Residual QDs may release toxic metal ions into the environment during the weathering process, exhibiting toxicity to Chlamydomonas reinhardtii, bacteria, macroinvertebrates, and even human beings.Therefore, it is of great importance to understand the environmental toxicity and transfer route of QDs.

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