Remoção de elementos químicos da água residuária de Indústria farmoquímica utilizando a gramínea do gêneroCynodon

Abstract

The aim of this study was the evaluation of the effect of wastewater of pharmochemistry industry in the biomass production, dry matter content, mineral content and nutritional efficiency of the grasses of Cynodon genus. The experiment was conducted in green house, in the Department of Agronomy, State University of Maringá, PR. For this survey, wastewater of pharmochemistry industry was used in the growth of grasses of Cynodon genus. The treatments consisted of different astewater percentages (25, 50,75 and 100%) besides the control, containing distilled water. The experiment lasted 28 days. The biomass production, dry material, mineral contents (N, P, K, Ca, Mg and Na) and nutritional efficiency (uptake, translocation and use efficiency) were evaluated. The experimental layout was in randomized blocks (D.B.C), in factorial scheme 5 X 17, with four replicates. The data was submitted to the variance analysis (ANOVA) to 5% of probability. The quantity variables were detailed by the regression analysis. The treatments showed significant differences (P<0,05) between them to morphometric attributes: biomass, dry material of the aerial part and root system, nitrogen, phosphorus, potassium, calcium, magnesium and sodium and in the evaluation of nutritional efficiency (uptake, translocation and use efficiency). It was noticed that the increase of wastewater percentage in nutritive solution negatively affected the biomass expression, mineral content and nutritional efficiency of grasses of Cynodon genus. Sodium damaged the plants' development.