Catálogo de publicaciones - libros

Adsorbents are thought to be the most effective method for recovering the low concentrations of uranium from the wastewater. Here we will synthesize the interpenetrating polymer networks (IPN) based on acrylonitrile (AN) and polyethylene glycol (PEG) and using its adsorptive ability for removing uranium from aqueous systems. It was found that the polymeric adsorbent has very highadsorption ability for uranium and can be used in adsorption studies to remove uranium from wastewater. It is to remove uranium and other radioactive elements in their source before mingling to the groundwater. The coal power plants release ashes and they are deposited on the surroundings. Leaching of ash samples to remove toxic, heavy, and radioactive elements before their mingling to the groundwater is studied.

Mankind has utilized water sources and wetlands since their earlier times. As mankind's dependency on water increased, water became a strategic commodity. The process of industrialization has increased the human pressure on the resources, and consumption has become unsustainable. The usable freshwater resources in the world have been significantly declining. The available potential of freshwater resources on the planet Earth is decreasing very rapidly as a direct consequence of unnatural processes including human-induced climate change and globalization aswell- as the lack of proper management strategies. The climate change is likely to create significant droughts in many parts of the World.

Water reuse plays an important role in water resource, wastewater, and ecosystem management in many countries. Reclaimed water reduces discharges to surface waters, recharges groundwater, and postpones costly investment for development of new water sources and supplies. Water reuse involves taking domestic wastewater, giving it a high degree of treatment, and using the resulting highquality reclaimed water for a new, beneficial purpose. This study concerning onto the treatment of wastewater by using new chelating grafted membrane. Application of the prepared membrane in the treatment of wastewater was tested.

Pollutants discharged directly or indirectly into river basins make harm to the whole water ecosystem. According to these reasons it is important to evaluate the pollution load and its economic value to river basin. According to the Directive 2000/60/EC of the European Parliament and the Council of 23 October 2000, establishing a framework for Community action in the field of water policy it is necessary not only to analyze the specific character of the river basin, impact of human activity, but also to make its economic analysis. These factors could make the main basis in the creation of new programs at protecting and improving water ecosystems. In this article, the pollution load of organic compounds and nutrients (total nitrogen and phosphorus) was estimated in the Lithuanian rivers from point and non point sources.