Proposta de tratamento e disposição adequada de resíduos químicos gerados no Laboratório de Separação e Pré-concentração (LSPc) do IQ-UFU

Abstract

In this work it was studied possible solutions for the problems decurrents of the undue evasion of residues in the environment on the Laboratório on Separação and Préconcentração (LSPc) of the Chemistry Institut in the Universidade Federal de Uberlândia. From considerations above, some procedures realized by several Federal Instituts that helped to minimize suchs disorders, how the implement by program to administrastion in residues ruled in a removal of posture, beyond of to require one continuous reeducation for part in the professionals in above mentioned laboratorys. In short, the rationalizetion of procedures to aim at one under consumption in reagents and consequent, reduction of worns values with the reagents and younger impact environment. With adequates procedures adopted in the LSPc, it was verified the conscience of the users at relation on adequates evasion and label from residues generated in the laboratory in question. It was realized one survey of the inventory of the passive existent in the LSPc. After this survey, it was effectuated the treatment of the residues utilizing technics of separation phasis, distillation and filtration, where went possible the recuperation of the solvents etanol, chloroform and from the 1-(2-pyridylazo)-2-naphthol (PAN). The solvent methyl-isobutyl-ketone, the tenoyltrifluoroacetone and the 8-hydroxyquinoline not went recuperated.The metals lead, iron, copper, zinc and manganese was not determineds. The concentration of cadmium (II) determined was of 5,73.10-3 mg.dm-3, whose value to meet below of the value maximum permited (VMP) that to be of 0,01 mg.dm-3. The total size of the etanol and chloroform recovereds was 13,0 L and 3,8 L, respective generate a total economy of the R$ 99,53 for the instituion. For to recover the PAN there was a economy of the R$ 52,00, seen that the recovered mass of this composed was of the 1,840 g.