PROPOSAL OF A THERMAL DEGRADATION METHODOLOGY WITH SCRAPS OF LOGS FROM Araucaria columnaris
Journal Title: Periódico Tchê Química - Year 2017, Vol 14, Issue 27
Abstract
The reconstruction of past environments has been studied in several areas of science, aiming to help in understanding the several events that occurred on the planet. Plants are considered environmental markers and usually show structural adaptations that are characteristic of their habitat. Therefore, after passing through the charring process, they may not be completely consumed by the fire, being possible to find remnants of charcoal and other remaining materials. Based on this, the presence of charcoal is an evidence of the occurrence of current or past fires, contributing with a valuable source of (paleo) environmental proxy data. In this sense, the objective of this work is to assess the physical and chemical changes that occur on scraps of logs from Araucaria columnaris. It will be done during the charring process in muffle, at different temperatures, allowing us to assess important influences in relation to its forming process. The charring temperatures of the logs in natura were in a range of 50 to 1000 ° C, with ranging temperatures from 50 to 50 ° C, and heating ramp of 25 ° C min-1. The analysis of this result seeks to allow the proposal of a methodology that assists in the characterization of the natural processes involved in the forming of this type of material, serving as a contribution to (paleo) environmental inferences.
Authors and Affiliations
Daniela DE LARA
Keywords
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