Publications by authors named "B Tansel"
Batch leaching experiments were conducted to evaluate the release of forty per- and polyfluoroalkyl substances (PFAS) from sludge samples collected after thickening, anaerobic digestion, and dewatering processes at two wastewater treatment plants. The South District wastewater treatment plant (SDWWTP), which receives domestic wastewater and landfill leachate from a nearby landfill, and the Central District wastewater treatment plant (CDWWTP), which receives only domestic wastewater, were selected for this study. PFAS released into the aqueous phase were analyzed by sacrificial sampling after 1, 3, 7, 14, and 30 days.
View Article and Find Full Text PDFThe recovery and reestablishment times of mangrove forests exposed to oil are highly dependent on the oil type and oil-related contaminant levels in water and sediments, spill magnitude, oil exposure duration and frequency, duration of the oil contamination remaining in water and sediments, and post-spill events and clean up actions. Estimating the adverse effects of oil exposure and recovery times of mangrove forests is often done by referencing other spills in different geographical regions or locations with different coastal and environmental characteristics. As a result, these projections may not provide reliable estimates for recovery times and the success of the recovery efforts.
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- - The study investigates the presence of PFAS (per- and polyfluoroalkyl substances) in biosolids from two wastewater treatment plants in Miami, specifically focusing on how treatment processes affect PFAS levels and their potential mobility in soil.
- - Samples underwent various treatment processes (thickening, anaerobic digestion, dewatering) and revealed that PFAS tends to accumulate in solids during treatment, but certain processes can release PFAS back into the liquid phase.
- - The findings indicate that a significant number of PFAS are highly soluble, meaning they could easily move into the environment through runoff or during irrigation after the biosolids are applied as fertilizer, raising concerns about land application practices.
Coupling of biogeochemical processes occurs between different waste components and waste layers during decomposition of wastes materials deposited in landfills by mechanisms similar to those occurring in marine sediments (i.e., sediment batteries).
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- Significant heat generation occurs in landfills during the decomposition of food waste, impacting the thermal dynamics of municipal solid waste (MSW) components.
- The study focuses on examining and comparing thermal properties such as thermal conductivity, diffusivity, and specific heat of MSW materials, liquids, and gases to understand temperature increases in gas and leachate.
- Findings indicate that heat from decomposing waste primarily transfers to leachate, leading to warmer liquids and gases, while non-food waste materials exhibit slow temperature uniformity due to low thermal conductivities.