Wetlands for Wastewater Treatment

Castillo-Valenzuela, Jairo; Martinez‐Guerra, Edith; Gude, Veera Gnaneswar

doi:10.2175/106143017x15023776270269

Cited by 10 publications

(5 citation statements)

References 47 publications

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“…Constructed wetlands (CWs) are a consolidated ecofriendly, nature-based technology that has gained popularity for decentralized wastewater treatment in small communities and rural areas of both industrialized and less developed countries (Álvarez et al, 2017;Machado et al, 2017). They are low-cost treatment systems, in terms of maintenance and operation and have proven to efficiently remove organic matter, nitrogen and pathogenic microorganisms from wastewater (Castillo-Valenzuela et al, 2017;Ilyas and Masih, 2017;Wu et al, 2016a). During the last decade, there has been a great development of this technology through the use of various CW designs and operational modes to achieve a compromise between their performance and the lowest energy consumption in intensive approaches, or the lowest land requirement in extensive setups.…”

Section: Introductionmentioning

confidence: 99%

Boosting pharmaceutical removal through aeration in constructed wetlands

Ávila

García

Uggetti

et al. 2021

Journal of Hazardous Materials

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Section: Introductionmentioning

confidence: 99%

Boosting pharmaceutical removal through aeration in constructed wetlands

Ávila

García

Uggetti

et al. 2021

Journal of Hazardous Materials

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“…Phytoremediation is a nature-based and cost-effective technique that combines plants and microorganisms, sometimes a filtering media, to treat water and wastewater [7][8][9]. Usually, this method employs macrophytes due to their great biomass production and robust metabolism, such as the giant duckweed Eicchornia crassipes [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Exogenous Auxin and Gibberellin on Fluoride Phytoremediation by Eichhornia crassipes

Vaz

Borges

Ribeiro

2023

Plants

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High rates of fluorosis were reported worldwide as a result of human consumption of water with fluoride contents. Adjusting fluoride concentration in water as recommended by the World Health Organization (<1.5 mg L−1) is a concern and it needs to be conducted through inexpensive, but efficient techniques, such as phytoremediation. The application of phytohormones was investigated as a strategy to improve this process. Thus, the main goal of this research was to evaluate the effect of exogenous auxin and gibberellin on the tropical duckweed Eichhornia crassipes performance for fluoride phytoremediation. Definitive screening and central composite rotatable designs were used for experiments where fluoride concentration (5~15 mg L−1), phosphorus concentration (1~10 mg L−1), and pH (5~9) were assessed as well throughout 10 days. Fluoride contents were determined in solution and plant tissues by potentiometry. Higher concentrations of fluoride reflected on greater absorptions by plants, though in relative terms removal efficiencies were quite similar for all treatments (~60%). Auxin and acidic conditions favored fluoride removals per mass of plant. Fluoride accumulated mostly in leaves and auxin probably alleviated toxic effects on E. crassipes while gibberellin showed no effect. Therefore, E. crassipes could be employed as a fluoride accumulator plant for water treatment and exogenous auxin may be used to improve the process.

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“…Another option is to replace conventional water purification with a root technological unit-a root treatment plant, which realizes naturally occurring self-cleaning processes in aquatic environment. The use of the appropriate vegetation ensures the creation of a specific filter of microorganisms to remove pollutants from aquatic environment [8,9]. These are phytoremediation procedures, where it is possible to degrade organic substances with the help of bacterial communities located on root systems [10].…”

Section: Introductionmentioning

confidence: 99%

“…After the filter part, a stabilization tank in the form a wetland or a pond can also be included. Another possibility of the using purified water is its application for irrigation, or its release into a recipient [9,[11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Study of the Applicability of the Root Wastewater Treatment Plants with the Possibility of the Water Recirculation in Terms of the Surfactant Content

Lobotková

Hybská

Samešová

et al. 2022

Water

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Anthropogenic activities cause the accumulation of pollutants in the aquatic environment. Conventional wastewater treatment plants do not completely remove emergent pollutants, including personal care products, in which the surfactants are an essential ingredient. The results of our study confirm the presence of the surfactants in the aquatic environment, which represents an ecological and environmental risk. It was confirmed by ecotoxicological tests (test with using Daphnia magna and Lemna minor) and the specified content of the surfactants in the samples. The content of the surfactants in personal care products is significant and their impact on the aquatic environment is not sufficiently monitored. Root wastewater treatment plants, as innovative cleaning methods, represent effective cleaning methods, which can be used as a separate object or as an object for further cleaning already cleaned water from conventional wastewater treatment plants. Purified water from these devices can be recycled and used again as utility water (according to the model presented in the article). A significant benefit from the point of view of global warming and the effect of anthropogenic activity is the saving of drinking water as a natural resource. Root wastewater treatment plants ensure the required quality of discharged water in the aquatic environment.

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Wetlands for Wastewater Treatment

Cited by 10 publications

References 47 publications

Boosting pharmaceutical removal through aeration in constructed wetlands

Boosting pharmaceutical removal through aeration in constructed wetlands

Exogenous Auxin and Gibberellin on Fluoride Phytoremediation by Eichhornia crassipes

Study of the Applicability of the Root Wastewater Treatment Plants with the Possibility of the Water Recirculation in Terms of the Surfactant Content

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