Polyfluoroalkyl and perfluoroalkyl substances (PFASs) are highly stable organic compounds, which contain multiple carbon-fluorine bonds. They are used in various commercial products, including aqueous fire-fighting foams (AFFF) and products with non-stick coatings. However, thes…
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Peatlands make up 3% of the earth's land surface and contain about one third of the C contained in soils globally. The role of peatlands in the C cycle is as a net sink. Organic matter accumulates in these areas because the rate of net primary productivity (NPP) exceeds the rate…
Advanced technologies have played essential roles in the development of molecular organic geochemistry. In this thesis, we have developed several new techniques and explored their applications, alone and with previous techniques, to paleo-reconstruction. First, we developed a pr…
Recently, several studies demonstrated that bacteria might be able to degrade sorbed contaminants without prior desorption in water. Mechanisms including extra-cellular biomaterial production, chemotaxis/motility, and adhesion were hypothesized to be responsible for the enhanced…
Biobased polymers derived from renewable resources are increasingly important due to acute concerns about the environmental issues and limited petroleum resources. Poly(lactic acid) (PLA) is such a polymer that has shown great potential to produce biodegradable plastics. However…
The water resources are polluted because of the widespread use of dyes in the industry, resulting in a major ecological threat. Among the various water treatment techniques, adsorption and photocatalytic degradation methods are the most preferred owing to their easy applicabilit…
Plastic are a highly durable, lightweight and low cost family of polymeric materials that form an essential and integral component of today’s world. Their continued world-wide large scale manufacture has led them to be a major component of man-made waste. A large proportion of p…