Removal of Organic Micropollutants from Riverine Waters using Constructed Wetlands: A Mesocosms Experiment

Prediction of the removal efficiency of emerging organic contaminants based on design and operational parameters of constructed wetlands

“…Song et al (2009) reported the reduction in removal efficiency of SHs by increasing the depth of CWs and emphasized the importance of maintaining sufficient aerobic conditions in shallow CWs for efficient removal of estrogens (SHs). Several studies reported that longer HRT improves the removal efficiency of PhCs (Dordio and Carvalho, 2013;Herrera-Cárdenas et al, 2016;Auvinen et al, 2017;Vystavna et al, 2017), PCPs (Herrera-Cárdenas et al, 2016;Vystavna et al, 2017;Salcedo et al, 2018), and SHs (Chen et al, 2014;Vystavna et al, 2017;Campos et al, 2019) because most of the mechanisms contributing to the removal of these EOCs such as adsorption onto the substrate media, sorption onto carbon-rich surfaces, plant uptake, anaerobic biodegradation, and photodegradation are slow processes (Auvinen et al, 2017;Vystavna et al, 2017;Petrie et al, 2018) and requires longer HRT for their completion. On the other hand, some studies did not observe a significant difference in the removal efficiency of some of the studied PhCs with the increase in HRT (Zhang et al, 2011(Zhang et al, , 2012a(Zhang et al, , 2012b.…”

“…Similarly, the role of support matrix in the removal of EOCs have been examined by using the substrate material of high adsorption capacity, rich in organic/inorganic surfaces, and high surface area. This indicated that adsorption to the substrate media and/or sorption onto organic/inorganic surfaces is an important removal mechanism to reduce PhCs (Dan et al, 2013;Chen et al, 2016;Huang et al, 2017;Park et al, 2018;Nivala et al, 2019), PCPs (Ávila et al, 2014b;Salcedo et al, 2018;Xie et al, 2018), and SHs (Herrera-Melián et al, 2015Hakk et al, 2018;Campos et al, 2019) from wastewater. Ilyas and van Hullebusch (2019, 2020a, 2020b) conducted a comprehensive and critical review of the performance and a comparison of all types of planted and unplanted CWs for the removal of PhCs, PCPs, and SHs based on available literature.…”

Low-Carbon Technologies to Remove Organic Micropollutants from Wastewater: A Focus on Pharmaceuticals

“…CWs are nature-based solutions that can remove organic micropollutants (OMPs) through processes such as hydrolysis, volatilization, sorption, biodegradation, and photolysis. Various studies have shown that CWs can eliminate OMPs with efficiencies in the range of 54-98% [46].…”