Bibliometric Analysis of Phosphorous Removal Through Constructed Wetlands

摘要

Resource management should follow a circular flow so that important substances such as phosphorus are not wasted in the form of water bodies' pollutants. Therefore, the objective of this study was to investigate innovations focussing on the recovery of phosphorus in constructed wetland (CW) treatment systems, as well as related removal mechanisms and the more recent development and application of new substrates with high removal efficiency and potential for phosphorous recovery. Using bibliometric analysis, the most important P removal pathways were identified and investigated, concluding that substrate choice is one of the main aspects to be considered when aiming for phosphorous removal, and many improvements were obtained through the application of materials from either natural or artificial origins as well as construction waste and by-products of industrial processes. Thus, it is important that the chosen materials for a wetland substrate must present affinity with phosphorous, recycling possibility, low cost and local availability, in order to approach the concepts of circular economy and sustainable development.