STUDY OF THE CORRELATION BETWEEN VOLATILE SOLIDS AND CHEMICAL OXYGEN DEMAND AS INDICATORS OF THE TIME OF DEGRADATION OF CIGARETTE BITUCAS IN THE ENVIRONMENT

• DOI: 10.22533/at.ed.31722122160910

• Palavras-chave: microwastes, butts, chemical oxygen demand.

• Keywords: microwastes, butts, chemical oxygen demand.

• Abstract:

  Municipal solid wastes are one of the responsible of the soil and water degradation at the environment, among these wastes, the cigarette butt’s appears. The cigarette butt’s are classified as dangerous solid microwastes and corresponds about 25 to 50% of the collected trash at roads and streets. The butt’s are of hard degradation, due possible of the cellulose acetate (CA) presence, a recalcitrant polymer present in about 95% cigarette filters. So, it’s necessary the physico-chemicals parameters monitoratoration with the intent of describe the conditions of the degradation phenomena processess. Therefore, in that case, the research inserts itself aiming to correlate the volatile solids (VS) content with the chemical oxygen demand (COD), to stablish it as cigarette butt’s degradation time indicators at the environment. For the methodological proceeds, cigarette butt’s samples were collected randomly at Campina Grande city, from Paraíba state. The physico-chemical monitoring from the VS and COD parameters was made, of which were used the gravimetric and closed reflux, in a digester block, respectively. After that, the data were tabulated and computed in a statistical software with the intent to verify the correlation existence between these parameters. As result, a positive linear correlation (r = 0,9764) and a probability p = 0,000 with 5% of meaningfulness was observed, showing that the VS decay shape along the time it’s also followed by the COD, showing the possibility establishing those parameters as degradation time for the cigarette butt’s indicators.