Global warming potential of English brick manufacturing in Sri Lanka: A cradle to gate analysis

Indisa Herath, S. Karunaratne, Dilshi Dharmarathna
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引用次数: 1

Abstract

Clay bricks are one of the most commonly used walling materials in Sri Lanka. The brick manufacturing process poses a notable impact on the environment. Clay excavation leads to resource depletion while diesel fuel utilized for excavation and clay transportation pollutes the air. Additionally, tree cutting for wood fuel contributes to deforestation whilst wood burning promotes air pollution. Thus, this research aimed to quantify the global warming potential due to English brick manufacturing using cradle to gate Life Cycle Assessment (LCA) approach. The functional unit used was one-meter square of the brick wall area. Data collection, analysis and interpretation of results were done by the ISO 14044/14040 standards. Primary life cycle inventory data was gathered via brick kiln owners and workers. The LCA assembly was modelled using the ‘OpenLCA’ software. Three product systems were defined according to the brick bond types and wall thicknesses. The global warming potential related to brick production was assessed using the ‘GWP 100a’ method. Clay excavation, clay transportation and wood chamber firing emerged as emission hotspots. The study revealed that the global warming potential of 225mm brick wall and 115mm brick wall as 11.9 and 5.9 kg CO2-eq/m2, respectively. Through this study, local clay brick industry can be driven to improve the overall sustainability of the brick manufacturing sector.
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斯里兰卡英国砖制造业的全球变暖潜力:从摇篮到大门的分析
粘土砖是斯里兰卡最常用的墙体材料之一。砖的制造过程对环境造成了显著的影响。粘土开挖导致资源枯竭,而开挖和运输过程中使用的柴油污染空气。此外,砍伐树木以获取木材燃料会导致森林砍伐,而燃烧木材则会加剧空气污染。因此,本研究旨在利用从摇篮到闸门的生命周期评估(LCA)方法来量化英国制砖造成的全球变暖潜势。使用的功能单元为砖墙面积的1平方米。数据收集、分析和结果解释按ISO 14044/14040标准完成。主要的生命周期库存数据是通过砖窑业主和工人收集的。使用“OpenLCA”软件对LCA装配进行建模。根据砖的粘结类型和壁厚定义了三种产品体系。使用“GWP 100a”方法评估了与砖生产相关的全球变暖潜势。粘土挖掘、粘土运输和木室烧制成为排放热点。研究表明,225mm砖墙和115mm砖墙的全球变暖潜势分别为11.9和5.9 kg CO2-eq/m2。通过本研究,可以推动当地粘土砖行业提高砖制造业的整体可持续性。
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