Carbon footprint and oxygen footprint assessment of hemp yarn

Oxygen and carbon dioxide play crucial roles in the earth's environment and human health. However, for the textile industry, few studies focus on the carbon footprint and oxygen footprint of plant-derived fibres. As a result, in this study, a method was presented for calculating the oxygen production and consumption from hemp cultivation phase to yarn production phase. The results indicate that spinning phase contributes the greatest carbon emission (86.4%) and oxygen consumption (88.01%), followed by the crop cultivation phase (8.94% and 8.27%) and fibre extraction phase (4.62% and 3.72%). Additionally, the crop cultivation phase has positive impacts to mitigating climate change by sequestrating carbon (4.0733 kg CO2) and releasing oxygen (2.9624 kg O-2). The results obtained in this study can provide methodological and technical guidance for estimating carbon footprint and oxygen footprint transferred from plant-derived fibre crops to textile products.