Browse

The presence of metals in aquatic environment is known to cause several health problems to animals and human beings. The levels of heavy metals in wastewater and drinking water must be reduced to the maximum permissible concentration. Clays are abundant and inexpensive layered alumino-silicate minerals that have adsorbent properties. In general, chemical species can interact with clays either by ion exchange or physisorption, both being reversible processes. Among the mineral clays, smectites, especially montmoril...

In this study are presented and analyzed data resulted from monitoring of ions concentration: NO??, NO?? and PO?пїЅ? in surface waters from Bucharest during 2013 пїЅ 2016 period. The concentrations of these ions are an important indicator of the degree of eutrophication of lakes. The monitored surface waters are formed of 12 lakes rezulted by systematizing of Colentina River. The sources of pollution with nitrates and phosphates are coming from economic activities around lakes, from urban transport, and the initia...