1. Chlorine for water disinfection: properties, applications and health effects.- 2. Greenhouse gas from organic waste composting: emissions and measurement.- 3. CO2 photocatalytic reduction: photocatalyst choice and product selectivity.- 4. Fluoride in drinking water: health effects and remediation.- 5. Selenium in agriculture. Water, air, soil, plants, food, animals and nanoselenium.- 6. Biofuels: bioethanol, biodiesel, biogas, biohydrogen from plants and microalgae.- 7. Digestion tests to measure heavy metal bioavailability in soils.- 8. Biosafety risk of genetically modified crops containing Cry genes.- 9. Foundry air pollution: hazards, measurements and control.- 10. Lignolytic enzymes for water depollution, coal breakdown, and paper industry.