Amauri Antunes Barcelos

Phytoremediation of vineyard copper-contaminated soil and copper mining waste by a high potential bioenergy crop (Helianthus annus L.).

Phytoremediation is a helpful technique to remediate copper-contaminated areas. The aim of this study was to evaluate sunflower phytoremediation capacity in two vineyard copper-contaminated soils (Inceptisol and Mollisol) and a copper mining waste. Nutrient uptake, copper phytoaccumulation, translocation factor (TF), and bioaccumulation factor (BCF) of sunflower were evaluated after 57 days of growth. Plants grown in both the Mollisol and Inceptisol soils showed high plant height. Fresh biomass was high in the Mollisol in the shoots and roots and also demonstrated the highest values on the tolerance index (TI). The BCF after growth in all three of the copper contaminated soils as Inceptisol, Mollisol, and copper mining waste showed reduction of this index value to 0.19, 0.24, and 0.03, respectively against native soil (Mollisol under natural conditions (4.71). Sunflowers have some important characteristics such as high phytomass production, copper phytoaccumulation, and potential use to biofuel. Thus, sunflower is a potential candidate to phytoremediation of vineyard copper-contaminated soils.

RESÍDUOS SÓLIDOS NA REDE DE MICRODRENAGEM – UMA ANÁLISE QUALITATIVA NA CIDADE DE PELOTAS/RS

The Basic Sanitation at Brazil, according to the law no 11.445/2007, includes about four aspects, the Supply of Potable Water, the Collection and the Treatment of Sewage, the Urban Cleaning and the Solid Waste Management, the Drainage and the Rainwater Management. The urban drainage and the solid waste management are of extreme relevance to the factors related to the present work, which aims to characterize so qualitative the solid waste found in micro-drainage network in the City of Pelotas – RS. The research was made at the period from August to October 2014 proposed to identify the main solid waste by means of photographic analysis checked in 11 different points at the micro-drainage network. The analysis made in micro-drainage network characterized a frequency of 100% of Plastic type 1, Wood and Organic Matter and the solid waste of least incidence were Rubber (27,27%) and Chemical Contaminants (9,09%).