Mitigation of Wastewater-Borne Chlorpyrifos
in Constructed Wetlands: the Role of Vegetation
on Partitioning

Wang, Chuan; Liu, Biyun; Xu, Dahai; Zhang, Dan; He, Feng; Zhou, Qiaohong; Wu, Zhenhua

doi:10.15244/pjoes/64375

Cited by 7 publications

(3 citation statements)

References 28 publications

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“…For the primary studies, the most common removal mechanisms studied were biological processes such as phytoremediation (n = 90), sorption (n = 69), and microbial activity (n = 43). Phytoremediation was coded if the primary study looked at the impact of vegetated vs. non-vegetated systems [55,161,175], or analyzed the plant roots [23,119,127,180,210], leaves [127,210], and stems [119,210] for contaminant concentrations. The type of wetland plant used throughout the primary studies helps to identify which wetland plants were most common and if there was an impact on the removal efficiencies for different contaminants dependent on plant species.…”

Section: Removal Mechanisms and Efficienciesmentioning

confidence: 99%

“…Also, not all primary studies that specified the plant species present in the wetland system analyzed the impact of phytoremediation as a removal mechanism [21,173,205]. For the studies that did investigate phytoremediation, vegetated systems increased removal efficiencies compared to non-vegetated systems [51,55,66,95,154,161,175,181,217], with mature plants out-performing younger ones [158]. As for the impact of the type of plant on removal efficiencies, Lv et al ( 2016) concluded that Typha latifolia, Phragmites australis, Iris pseudacorus, and Juncus effusus were all able to take up and metabolize imazalil and tebuconazole with removal efficiencies between 46-96% and 25-41%, respectively [78].…”

Section: Removal Mechanisms and Efficienciesmentioning

confidence: 99%

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A Literature Review of Wetland Treatment Systems Used to Treat Runoff Mixtures Containing Antibiotics and Pesticides from Urban and Agricultural Landscapes

Nottingham

Messer

2021

Water

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Wetland treatment systems are used extensively across the world to mitigate surface runoff. While wetland treatment for nitrogen mitigation has been comprehensively reviewed, the implications of common-use pesticides and antibiotics on nitrogen reduction remain relatively unreviewed. Therefore, this review seeks to comprehensively assess the removal of commonly used pesticides and antibiotics and their implications for nitrogen removal in wetland treatment systems receiving non-point source runoff from urban and agricultural landscapes. A total of 181 primary studies were identified spanning 37 countries. Most of the reviewed publications studied pesticides (n = 153) entering wetlands systems, while antibiotics (n = 29) had fewer publications. Even fewer publications reviewed the impact of influent mixtures on nitrogen removal processes in wetlands (n = 16). Removal efficiencies for antibiotics (35–100%), pesticides (−619–100%), and nitrate-nitrogen (−113–100%) varied widely across the studies, with pesticides and antibiotics impacting microbial communities, the presence and type of vegetation, timing, and hydrology in wetland ecosystems. However, implications for the nitrogen cycle were dependent on the specific emerging contaminant present. A significant knowledge gap remains in how wetland treatment systems are used to treat non-point source mixtures that contain nutrients, pesticides, and antibiotics, resulting in an unknown regarding nitrogen removal efficiency as runoff contaminant mixtures evolve.

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Section: Removal Mechanisms and Efficienciesmentioning

confidence: 99%

Section: Removal Mechanisms and Efficienciesmentioning

confidence: 99%

A Literature Review of Wetland Treatment Systems Used to Treat Runoff Mixtures Containing Antibiotics and Pesticides from Urban and Agricultural Landscapes

Nottingham

Messer

2021

Water

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“…On the other hand, authors have highlighted that the importance of vegetation in CW resides in the rhizosphere, especially in rhizospheric bacterial strains [51,52]. The vegetation planted in the CWs was collected from agricultural drains where organophosphate pesticides and traces of organochlorines have been reported [22].…”

Section: Appl Sci 2020 10 X For Peer Review 10 Of 14mentioning

confidence: 99%

Efficient Malathion Removal in Constructed Wetlands Coupled to UV/H2O2 Pretreatment

et al. 2020

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Intensive agriculture has led to the increasing application of pesticides, such as malathion, thus generating large volumes of untreated cropland wastewater (CropWW). In this work, a hybrid system constructed wetlands (CW) coupled in continuous with an optimized UV/H2O2 pretreatment was evaluated for the efficient removal of malathion contained in CropWW. In the first stage, 90 min UV irradiation time (UV IR) and 65 mM hydrogen peroxide (H2O2) were identified as optimal operation parameters through a central composite design. The second stage consisted of CW planted with Phragmites australis collected from the agricultural discharge area and operated as a piston flow reactor. Furthermore, CW hydraulic residence times (HRT) of 1, 2 and 3 days, including hydraulic coupling, were evaluated. The removal efficiencies obtained in the first stage (UV/H2O2) were 94 ± 2.5% of malathion and 45 ± 2.5% of total organic carbon (TOC). In stage two (CW) 65 ± 9.6% TOC removal was achieved during the first 17 days, from which around 24% was associated to the biosorption of malathion byproducts. Subsequently, and until the operation ends, CW removed about 80% of TOC for 2 and 3 days HRT, with no significant differences (p > 0.2), which is higher than those reported in several studies involving only advanced oxidation processes (AOP) with UV IR times above 240 min and even for systems using catalysts. The results obtained indicate that the system UV/H2O2-CW is a technically suitable option for the treatment of CropWW with a high content of malathion mainly found in developing countries. Moreover, the hybrid system proposed also represent significant reduction in the size of the treatment plant.

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Effect of organophosphate esters on microbial community and proteomics in constructed wetlands and its removal mechanism

Zou

Qin

et al. 2023

Chemosphere

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Mitigation of Wastewater-Borne Chlorpyrifos in Constructed Wetlands: the Role of Vegetation on Partitioning

Cited by 7 publications

References 28 publications

A Literature Review of Wetland Treatment Systems Used to Treat Runoff Mixtures Containing Antibiotics and Pesticides from Urban and Agricultural Landscapes

A Literature Review of Wetland Treatment Systems Used to Treat Runoff Mixtures Containing Antibiotics and Pesticides from Urban and Agricultural Landscapes

Efficient Malathion Removal in Constructed Wetlands Coupled to UV/H2O2 Pretreatment

Effect of organophosphate esters on microbial community and proteomics in constructed wetlands and its removal mechanism

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