Evaluation of the toxic potential of municipal solid waste city of Campina Grande - PB

ABSTRACT

The great heterogeneity of Municipal Solid Waste (MSW) makes it presents a very variable composition and can often be compared to industrial waste substances by having the heavy metal bases and other toxic components that present risks to health and the environment . Thus, the search for alternative technologies for proper waste management and understanding of their behavior after disposal, has made more and more studies are developed for this purpose. Examples are studies in experimental cells, made in order to simulate the behavior of a landfill cell, understanding all the reactions that occur inside under controlled conditions. The aim of this study is to evaluate the toxic potential of MSW in the city of Campina Grande - PB, present in an experimental cell. The experiment consisted on the construction of an experimental cell that simulates a full-scale landfill. The monitoring of the cell was made during a period of 2 years, and held the initial characterization of the waste on the day of its completion later monthly samples of waste were collected. The results showed that the MSW were classified as hazardous waste because they contain in their composition high levels of elements such as aluminum, manganese and nickel. Finally, it was concluded that the presence of these elements along with Ammoniacal Nitrogen present in the MSW did not interfere with the biodegradation process, however contributed to the phytotoxic effect of the solid waste.

Key Words:
Phytotoxicity; Experimental cell; Metals; Ammoniacal Nitrogen