Porous Ceramic Filers, to Retain Heavy Metals

In this research work it has determined the ability of various porous ceramic filters in the retention of heavy metals such as lead, cadmium, in solutions prepared in the laboratory and in waters RIO GERA, filters based on bentonite were developed and urban restudios by the method of casting polymeric sponge. In the quantitative analytical chemistry laboratory of the National University of Trujillo, suspensions were prepared ratio (by weight) liquid / solid 20/80 and the 50/50 case of clay for the case of waste used as additives 0.20% for the flocculant (sodium polyacrylate) and 2 wt% binder (CMC). Homogenisation of suspensions was conducted for half an hour on the mechanical shaker, the polymer impregnated sponges such suspensions. The heat treatment was performed in two stages, first at 420 ° C for 3 hours to ensure removal of polymeric substrate and organic additives, and then at 600 ° C for 3 hours for the filters clay and to 1000 ° C for filters of waste in order to achieve tuning of the filters. Experimental way pre retention of heavy metals in laboratory solutions was evaluated, deciding to continue with the filters of clay in the Rio Gera (samples), finally it has carried out a retention test heavy metals such as lead and cadmium conditions initial known in 3 samples of river water, the final concentration after water exposure ceramic filters for 24 hours was measured, reporting the following results retention, increased to 93.5% and 88.6% in the case of lead and cadmium respectively worth mentioning that mercury was not found in the waters of the river tumbes well as reporting the analysis in the laboratory. The ACI of the National University of Trujillo. The final concentrations after application of the filters in the waters of the sample reported lower values than those set in the D. S-MINAM 002-2008. Environmental quality standards for potable water use and water for irrigation of plants and animals drink.