Abstract
Exposure to indoor air pollution can have significant impact on human health and quality of life. Active living wall (ALW) is an advanced technique of the green wall concept, contributing to improve the indoor air quality (IAQ). Compared to the standard in-house mechanical systems for IAQ control, the use of this botanical biofilter (especially the ALW) has the potential to reduce the overall indoor air pollution as well as the carbon footprint of built environment. While ALW acts as a promising solution to improve the IAQ, this study aims to perform the environmental assessment of ALW system based on embodied energy (EE) theory. Although, ALW is beneficial for environment and society, however the sustainability of ALW system has been rarely analysed. In this study, the design and construction of ALW system has been assessed and key materials with high EE have been identified. Finally, recommendations have been made to enhance the design strategy that will help to reduce EE of ALW system for future sustainable built environment. (C) 2020 The Authors. Published by Elsevier Ltd.