Removal of nutrients, organics and suspended solids in vegetated agricultural drainage ditch

Vymazal, Jan; Březinová, Tereza

doi:10.1016/j.ecoleng.2018.04.013

Cited by 81 publications

(29 citation statements)

References 50 publications

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“…In the current study, the average TN concentrations decreased from 2.7 to 1.7 mg L −1 (Figure 2) resulting in 39.1% removal efficiency. This removal efficiency rate is consistent with that observed by Flora and Kröger [45] and Vymazal and Březinová [46] but is lower relative to the reported 92% removal in agricultural ditches in Mississippi [47]. N sequestering is promoted in the presence of aquatic plants as they slowed the water flow and consequently enhanced particulate sedimentation rate [34].…”

Section: Effect Of Vegetated Drainage Ditch On Water Purificationsupporting

confidence: 87%

Cleaner Production Technologies Increased Economic Benefits and Greenhouse Gas Intensity in an Eco-Rice System in China

Yang

Zhang

et al. 2019

Sustainability

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The sustainability of intensification of rice production is a prime concern for China. Application of organic amendments, changes in crop rotation system, ducklings' introduction, and construction of vegetated drainage ditches are some of the original management strategies to mitigate environmental pollution from paddy fields. Although these practices affect the rice culturing system through different mechanisms, there is limited investigation on their effectiveness on nutrient pollution alleviation. Therefore, a field study was carried out with the assessment of soil physico-chemical properties, greenhouse gas emissions, nitrogen removal efficiency, grain yield, and economic benefits by comparing the eco-rice culturing system (ER) to the local single rice cultivation system (CK). Results showed that the ER system can significantly improve soil fertility by increasing the pH in acidic soil, organic matter, total nitrogen (TN), and available potassium (K) content by 5.2%, 25.7%, 19.1%, and 19.4% in relation to CK, respectively. Meanwhile, about 10% of the total fertilizer N was removed from the harvesting of the plant species (Myriophyllum elatinoides and Pennisetum purpureum) in the vegetated drainage ditches. However, the ER system decreased the plant height (1.1%) and the number of tillers (9.6%), resulting in a reduction of the total grain yield (6.0%). Moreover, compared with the CK system, the ER system increased CH 4 cumulative emission, global warming potential (GWP), and greenhouse gas intensity (GHGI) by 11.1%, 8.1%, and 14.3%, respectively, and decreased N 2 O by 27.2%, but not statistical significantly (p < 0.05). Even so, by taking the costs of farm operations and carbon costs of greenhouse gas emissions, the net economic benefits by applying the ER system were higher relative to the CK system. Thus, our study provides further understanding of the technology which has the potential to transform sustainable rice production to a more profitable, income generating, and environmentally friendly industry in China.

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Section: Effect Of Vegetated Drainage Ditch On Water Purificationsupporting

confidence: 87%

Cleaner Production Technologies Increased Economic Benefits and Greenhouse Gas Intensity in an Eco-Rice System in China

Yang

Zhang

et al. 2019

Sustainability

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“…This plant can withstand extreme environmental conditions, including nutrient and heavy metal contamination (Schierup and Larsen 1981). In the last two decades, P. australis has been widely used in constructed wetlands for the treatment of agricultural and industrial wastewaters containing nutrients and heavy metals (Eid 2012;Vymazal and B rezinov a 2018) due to its high growth rate and biomass production, adaptability to variations in climatic conditions and great efficiency for metal and nutrients uptake (Bonanno and Lo Giudice 2010;Eid et al 2010aEid et al , 2020.…”

Section: Study Speciesmentioning

confidence: 99%

Seasonal potential of Phragmites australis in nutrient removal to eliminate the eutrophication in Lake Burullus, Egypt

Eid

Shaltout

Al-Sodany

et al. 2020

Journal of Freshwater Ecology

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The present study was conducted to investigate the potential of the emergent macrophytes Phragmites australis to remediate nutrients and restore an eutrophic wetland (Lake Burullus, Egypt). The plant was sampled monthly for one year from 6 sites distributed equally along the northern and southern parts of this lake. Monthly significant variation in all investigated sediment and water nutrients for the northern and southern sites was recorded. The biomass of P. australis in the southern sites was greater than that of the northern sites; in addition, the above-ground biomass was greater than the below-ground biomass. The above-ground biomass increased from February until it reached its maximum during August and then decreased again. Likewise, the highest nutrient concentrations in the different tissues were recorded at the beginning of the growing season during winter and early spring and then gradually decreased with increasing plant biomass. Moreover, the nutrient content (g/m 2 ) increased from the early growing season (February) and reached its peak during April-August and then decreased. Based on our results, P. australis could be used for the extraction of nutrients to reduce the eutrophication in Lake Burullus, if the above-ground biomass is harvested at its maximum value in August, as was the case regarding the maximum content of most nutrients. ARTICLE HISTORY

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“…Nutrient removal in wetlands is facilitated by plant uptake, microbial nitrification and denitrification, and substrate adsorption [10][11][12]. Vegetated ditches support many of these same processes and can be effective at N and P removal in agricultural landscapes [13,14]. However, more research on the different pathways influencing both the uptake and release of excess nutrients in vegetated sediments is needed to understand the utility of vegetated ditches as a best management practice for reducing N and P export from agricultural watersheds.…”

Section: Introductionmentioning

confidence: 99%

“…The dominant mechanism for N removal in small agricultural streams is denitrification [15,16]. Several studies have demonstrated that vegetation can enhance microbially-mediated N transformations, primarily denitrification, in ditches [11,14,17]. For example, in the Po River Basin (Italy), plant uptake accounted for only a minor fraction of N removal, while denitrification was the dominant N removal pathway in vegetated verses unvegetated ditches [11].…”

Section: Introductionmentioning

confidence: 99%

“…Plant uptake also contributes to N and P retention in wetlands and vegetated ditch environments. The role of direct nutrient assimilation by plants varies across studies ranging from 25% to 56% and 14% to 73% for N and P reductions, respectively [10,13,14]. Mesocosm studies determined L. oryzoides decreased NO 3 − -N and dissolved P loads by 67% and >50%, respectively, compared to the unvegetated control (29 and 36% decrease in NO 3 − -N and P loads) [21,22].…”

Section: Introductionmentioning

confidence: 99%

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Vegetated Ditch Habitats Provide Net Nitrogen Sink and Phosphorus Storage Capacity in Agricultural Drainage Networks Despite Senescent Plant Leaching

Taylor

Moore

Speir

et al. 2020

Water

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The utility of vegetated ditch environments as nutrient sinks in agricultural watersheds is dependent in part on biogeochemical transformations that control plant uptake and release during decomposition. We investigated nitrogen (N) and phosphorus (P) uptake and release across four P enrichment treatments in ditch mesocosms planted with rice cutgrass (Leersia oryzoides) during the summer growing and winter decomposition seasons. Measured N retention and modeled denitrification rates did not vary, but P retention significantly increased with P enrichment. At the end of the growing season, root biomass stored significantly more N and P than aboveground stem and leaf biomass. Decomposition rates were low (<10% organic matter loss) and not affected by P enrichment. Nitrogen and P export during winter did not vary across the P enrichment gradient. Export accounted for <10% of observed summer N uptake (1363 mg m−2), with denitrification potentially accounting for at least 40% of retained N. In contrast, net P retention was dependent on enrichment; in unenriched mesocosms, P uptake and release were balanced (only 25% net retention), whereas net retention increased from 77% to 88% with increasing P enrichment. Our results indicate that vegetated ditch environments have significant potential to serve as denitrification sinks, while also storing excess P in agricultural watersheds.

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Removal of nutrients, organics and suspended solids in vegetated agricultural drainage ditch

Cited by 81 publications

References 50 publications

Cleaner Production Technologies Increased Economic Benefits and Greenhouse Gas Intensity in an Eco-Rice System in China

Cleaner Production Technologies Increased Economic Benefits and Greenhouse Gas Intensity in an Eco-Rice System in China

Seasonal potential of Phragmites australis in nutrient removal to eliminate the eutrophication in Lake Burullus, Egypt

Vegetated Ditch Habitats Provide Net Nitrogen Sink and Phosphorus Storage Capacity in Agricultural Drainage Networks Despite Senescent Plant Leaching

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