Essays about: "health chemical"

Showing result 1 - 5 of 253 essays containing the words health chemical.

1. 1. Application of Fourier Transforms to time-resolved ambient pressure spectroscopy operando studies of CO oxidation over Pt(111)

   University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Synkrotronljusfysik

   Author : Grigore-Leon Ratiu; [2024]
   Keywords : Physics and Astronomy;

   Abstract : The study of heterogeneous catalysis has important implications in increasing the efficiency of industrial processes and in reducing the emissions of greenhouse gases from sources such as automobiles. A reaction with high industrial relevance is the oxidation of CO on noble metal catalysts. READ MORE

3. 2. A study on the effects of mercury in the environment: A focus on atmospheric contributions

   University essay from Göteborgs universitet / Institutionen för biologi och miljövetenskap; Göteborgs universitet / Institutionen för biologi och miljövetenskap

   Author : Jonna Petersson; [2023-06-22]
   Keywords : Mercury; deposition; transformation; remediation; ecosystem impact; human health;

   Abstract : Mercury is a metal that can transform between different forms in both the atmosphere and in ecosystems. The transformation as well as properties of the different mercury compounds affect when, how and where the effects will emerge. READ MORE

4. 3. Modelling Micropollutant Removal Through Ozonation in Wastewater

   University essay from Lunds universitet/Kemiteknik (CI)

   Author : Maximiliano Andrés Oportus Foster; [2023]
   Keywords : Micropollutants; water reuse; wastewater treatment models; ozonation; computer modeling; water and environmental engineering; Technology and Engineering;

   Abstract : Proper management of water resources is a key to climate change adaptation and resilience in modern societies. Adequate treatment of wastewater is essential for ensuring the sustainability of the water cycle and the health of the environment and the ecosystems that inhabit it. READ MORE

5. 4. Risk assessment of non-intentionally added substances in polyester yarn made from recycled polyethylene terephthalate (PET)

   University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

   Author : Kristina Arnqvist; [2023]
   Keywords : r-PET; polyester yarn; NIAS; risk assessment;

   Abstract : Polyester is a synthetic material made from polyethylene terephthalate (PET), which is synthesised from fossil raw materials. Many clothing manufacturers are using polyester in their clothing, which, from an environmental perspective, creates a non-sustainable cycle. READ MORE

6. 5. Ecological risk assessment of pesticide use in rice farming in the Mekong Delta , Vietnam

   University essay from Stockholms universitet/Institutionen för naturgeografi

   Author : Bubaraye Ohiosimuan Dirikumo; [2023]
   Keywords : Pesticides; Ecological Risk Assessment ERA ; rice farming; Mekong Delta; PRIMET Model; Exposure Toxicity Ratio ETR ; species sensitivity distribution SSD ; predicted environmental concentrations PECs ;

   Abstract : Pesticide use in rice farming is a common practice in the Mekong Delta and poses ecological risks to aquatic organisms, the environment, and human health. This study focused on the ecological risk assessment of pesticide use in rice farming using the PRIMET model as a decision support tool to evaluate the risks of pesticide exposure, ecotoxicity, and risk characterization, as well as employing the species sensitivity distribution (SSD) assessment model to calculate the potentially affected fraction (PAF) of species based on the computed predicted environmental concentrations (PECs) from PRIMET. READ MORE