Sökning: "chemical risk assessment"
Visar resultat 1 - 5 av 64 uppsatser innehållade orden chemical risk assessment.
1. Risk assessment of non-intentionally added substances in polyester yarn made from recycled polyethylene terephthalate (PET)
Uppsats för yrkesexamina på grundnivå, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)Sammanfattning : 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. LÄS MER
2. Ecological risk assessment of pesticide use in rice farming in the Mekong Delta , Vietnam
Magister-uppsats, Stockholms universitet/Institutionen för naturgeografiSammanfattning : 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. LÄS MER
3. Recommendations for Improving the Use of Risk Matrices in Coarse Risk Analyses
Master-uppsats, Lunds universitet/Riskhantering (CI); Lunds universitet/Avdelningen för Riskhantering och SamhällssäkerhetSammanfattning : Risk matrices are tables with rows representing consequences, and columns representing frequencies. The risk matrix is considered a simple and convenient tool for visualizing risk. However, it has faced critique from the scientific community. LÄS MER
4. Biogas Potential in the North of Sweden : Inventory and Techno-Economic Assessment of Substrates for an Increased Biogas Production in Norrbotten
Master-uppsats, Lunds universitet/Kemiteknik (CI)Sammanfattning : Great investments are planned in the north of Sweden the coming years, not the least in the county of Norrbotten where the projects collectively are referred to as the green transition due to the focus on fossil-free techniques. But to be able to secure a sustainable energy supply and reach the goal set by the member states of the European Union of a carbon dioxide neutral union in 2050 the production of alternative energy sources needs to intensify. LÄS MER
5. PFAS-föroreningars påverkan på Gävles grund- och dricksvattentäkt : Kartläggning av potentiella riskverksamheter och bedömning av risk
Kandidat-uppsats, Högskolan i Gävle/MiljövetenskapSammanfattning : The environmental toxin PFAS (per- and polyfluorinated alkyl substances) is a heterogeneous synthetic industrial chemical group that has been used since the 1950s which, due to its attractive properties, has a wide range of applications in our society. PFAS are persistent and bioaccumulative, which means that the levels increase in the environment over time; At higher levels, the substances are toxic and show a negative effect on human health. LÄS MER