Banca de DEFESA: ALVARO PATRIK CORTEZE SOARES

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : ALVARO PATRIK CORTEZE SOARES
DATE: 18/07/2025
TIME: 08:00
LOCAL: Sala virtual Google meet: https://meet.google.com/hxi-brno-aqo
TITLE:

DETERMINATION OF THE STACKING FACTOR OF WASTE FROM THE WOOD INDUSTRY IN THE AMAZON: TECHNICAL SUBSIDIES FOR THE MEASUREMENT AND CONTROL OF FOREST PRODUCTS

KEY WORDS:

Forest concession; Wood residues; Solid volume; Firewood; Forest product control.

PAGES: 38
BIG AREA: Outra
AREA: Multidisciplinar
SUMMARY:

The timber industry in the Amazon, while economically vital, faces significant challenges in resource management particularly regarding the utilization of wood processing residues for energy generation (firewood). A major obstacle lies in the inadequate understanding of quantification methods, which often results in improper disposal or distortions in chain-of-custody controls, as generalized stacking factors can lead to measurement inaccuracies. This study aimed to evaluate the volumetric yield, stacking factor, and density of wood residues (firewood) in a sawmill located in Rondonia, Brazil, which exclusively processes timber from forest concessions. The objective was to identify limitations in the current technical standards for measurement and control of forest products. For this purpose, the volume of logs consumed, and sawn products generated over one month was recorded. The solid and stacked volume (bundle) of produced firewood was determined, as well as the density of both firewood and sawn products through weighing. The resulting stacking factor was compared with the standard value set by IBAMA’s inspection manual. Additionally, the viability of using weight as a measurement parameter was evaluated. During the analyzed period, the sawmill processed 1,375.7670 m³ of Dinizia excelsa logs, with a volumetric yield coefficient of 44.30% ± 5.60% and a firewood stacking factor of 1.73 st/m³ ± 0.30 st/m³—higher than the 1.5 st/m³ fixed in the current regulation, revealing a gap in subproduct quantification. The apparent density of firewood was lower than that of the sawn products, with a density ratio (firewood to sawn wood) of approximately 1.15. This ratio can be used to estimate the solid volume of firewood based on its weight, offering an alternative for improving control, oversight, and valorization of wood residues in the Amazon forest product supply chain, thereby promoting greater sustainability and environmental responsibility.

COMMITTEE MEMBERS:
Presidente - 1805850 - MARTA SILVANA VOLPATO SCCOTI
Externo ao Programa - ***.701.522-** - MARCELO LUCIAN FERRONATO - UNIR
Externo ao Programa - 1807939 - JOSE DAS DORES DE SA ROCHA - UNIR