The book "Environmental Photochemistry Part II" offers a comprehensive analysis of the photochemical reactions that occur in various environments such as the atmosphere, natural waters, soils, and living organisms. This updated edition addresses fundamental aspects of photochemical transformations and mechanistic processes that take place in both air and water. Additionally, various applications are presented, including advanced photochemical oxidation processes for the treatment of water and air, as well as the use of photocatalysis for surface treatments and the recycling of nuclear fuels. The new edition provides a critical and up-to-date overview of the most significant research in the field of environmental photochemistry.