Carbon Footprint of Different Kinds of Footwear - a Comparative Study

Serweta Wioleta; Gajewski Robert; Olszewski Piotr; Zapatero Alberto; Lawinska Katarzyna

摘要

The carbon footprint of a product (CFP) approach is one of the most important tools which gives a possibility to estimate the total amount of greenhouse gas (GHG) emissions in the whole life cycle of consumer goods. A lot of attempts have been undertaken to elaborate methodology for CFP calculation. Because GHG emissions may occur at each stage of the life cycle, the calculation procedures are characterised by a high level of complexity. This is due to the use of a broad range of different materials in the case of the whole footwear manufacturing process. Owing to this fact, a lot of wastes, sewages and toxic gases may be generated at every step of the production process. For each kind of material used, a lot of determinants should be laid down, such as the source of the material as well as distances and means of transportation between manufacturers and consignees. It causes that estimation of total carbon footprint values is not possible, especially in the case of a long and multi-stage supply chain. With the use of the SimaPro LCA software package, the authors calculated the carbon footprint for seven types of outdoor footwear. The CFP was calculated for each step of the life cycle. Based on the calculations, the correlation dependences were revealed and stages with huge emissivity indicated. Then, with the use of a multivariate regression model, the regression function, which determines the total emissivity at each stage, was estimated. This approach gives qualitative indicators which can be taken into account in making decisions about corrective actions.

机译：产品（CFP）方法的碳足迹是最重要的工具之一，可以估计消费品的整个生命周期中的温室气体（GHG）排放总量的可能性之一。已经开展了大量尝试以详细说明CFP计算的方法。因为在生命周期的每个阶段可能发生温室气体排放，所以计算过程的特征在于高水平的复杂性。这是由于在整个鞋类制造过程的情况下使用了广泛的不同材料。由于这一事实，在生产过程的每一步都可以产生大量废物，污水和有毒气体。对于所用的每种材料，应放下大量决定因素，例如材料的来源以及制造商和收货人之间的距离和运输工具。它导致估计总碳足迹值是不可能的，特别是在长而多级供应链的情况下。随着Simapro LCA软件包的使用，作者计算了七种类型的户外鞋类的碳足迹。为生命周期的每个步骤计算CFP。基于计算，揭示了相关依赖性，并指出了巨大发射率的阶段。然后，利用多元回归模型，估计了回归函数确定每个阶段的总发射率的回归函数。这种方法提供了定性指标，可以考虑到纠正措施的决定。

Carbon Footprint of Different Kinds of Footwear - a Comparative Study

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