Compostagem de tabaco de cigarro contrabandeado e resíduos sólidos orgânicos em reator facultativo com capacidade de 2000L

Abstract

A large volume of organic solid waste (RSO) and smuggled cigarette tobacco has been produced. Usually these wastes are discarded in landfills, incinerated or disposed directly in the soil, becoming contaminants to the environment. Composting is a viable process to treat these wastes, but in Brazil it has been little used, because it requires constant management, as well as large spaces and distant from residences. Recent studies in facultative domestic reactors are being developed and presented as a viable alternative to composting. They have the advantage of being close to residences, without the need of large spaces and handling. The objective of this study was to study the use of a facultative reactor with a capacity of 2000 liters for the treatment of RSO, brush and tobacco smuggled cigarettes. The physical-chemical analyzes (pH, temperature, humidity and C / N ratio), biological (germination test and pathogen and pathogen indicative) and spectroscopic analyzes (ultraviolet visible - UV-Vis and infra-red IV). In addition, the influence of two different initial C / N ratios in the composting process, the C / N ratio 28 and 21, was investigated. Initial C / N ratio analyzes and phytotoxicity tests showed that the compound reached maturity in period of 120 days. By means of spectroscopic analyzes of UV-Vis and IV the efficiency was verified, indicating the degradation of compounds of simpler structure and the formation of humified compounds. In the microbiological and metal analyzes, it was observed that the concentrations are in accordance with the legislation for the organic compound. The different initial C / N ratios evaluated did not show significant variations in the quality of the final compound. Thus, it was concluded that the proposed treatment of the residues studied by means of the optional 2000 liter reactors reached the expected quality, with the formation of a humidified compound and without the presence of contaminants, thus demonstrating efficiency.