Água aditivada com diferentes concentrações de argilas.

Abstract

Potable water it’s all water destined for human consumption that does not offer risks or damage to health, intended for ingestion, preparation, production and the personal hygiene. About 30% of all water sweet of the world are mineral waters that are from underground sources, wells or aquifers. Brazil is the 5th largest consumer of bottled water, with growth perspective of 4% per year. The growth in demand by bottled water is due to Brazil has one of the largest freshwater reserves of the world and to looking for water that meets the requeriments of potability standards. Bentonite has its natural origin, has heterogeneous characteristics, can be found with characteristics and different grammage, can without classified such as sodium or calcium. The incorporation of sodium bentonite sodium and calcium in the water aims the elaboration of an additive water with the aim of enriching the due product. The mineral water was added with the incorporation of concentrations of 30, 50 and 100mg/L of sodium and calcium bentonites, respectively. The results indicate that the formulations are within the microbiological standards established by current legislation. They showed a reduction in pH in the formulations in proportion to the addition of clay. The results obtained remained within the limits allowed by the legislation for chlorides, alkalinity, iron and turbidity. Turbidity increased with increasing bentonite concentrations. The total hardness of the additive water showed high levels. Among all the formulations evaluated, water added with 50mg/L calcium bentonite was the formulation that presented better results compared to mineral water without addition and the other formulations.