Soil media innovations in bioswales: A review of engineered amendments and their influence on hydraulic and pollutant removal performance
Department of Civil Engineering, Faculty of Engineering, Ladoke Akintola University of Technology, Ogbomoso, Nigeria.
Review Article
World Journal of Advanced Research and Reviews, 2019, 01(01), 099–117
Article DOI: 10.30574/wjarr.2019.1.1.0007
Publication history:
Received on 28 December 2018; revised on 22 February 2019; accepted on 26 February 2019
Abstract:
Bioswales represent an essential green infrastructure component for sustainable stormwater management in urban environments. This review examines recent innovations in soil media design and engineered amendments for bioswales, focusing on their influence on both hydraulic performance and pollutant removal efficiency. The study systematically evaluates various soil amendment strategies, including biochar incorporation, iron-enhanced media, and specialized composite mixes designed to target specific pollutants. Research findings indicate that properly engineered soil media can significantly enhance bioswale performance, with documented improvements in infiltration rates, water retention capacity, and removal efficiencies for common stormwater pollutants such as suspended solids, nutrients, heavy metals, and organic contaminants. The review highlights the importance of amendment selection based on site-specific conditions, target pollutants, and local climate factors. Finally, this paper identifies critical knowledge gaps and promising research directions for advancing the next generation of bioswale soil media technologies.
Keywords:
Bioswales; soil amendments; Stormwater management; Pollutant removal; Hydraulic performance; biochar; Iron-enhanced media; Engineered soils
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Copyright © 2019 Author(s) retain the copyright of this article. This article is published under the terms of the Creative Commons Attribution Liscense 4.0