Screening of 18 species for digestate phytodepuration

Pavan, F.P.; Breschigliaro, Simone; Borin, Maurizio

doi:10.1007/s11356-014-3247-3

Cited by 21 publications

(10 citation statements)

References 30 publications

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“…However the assimilation of nutrients in the water by the macrophytes was evidenced by the production of biomass with annual P values of 9 g P m -2 at AFI-P and 5 g P m -2 at AFI-S, while N values were 48 g N m -2 at AFI-P and 32 g N m -2 at AFI-S. These results exceed the values recorded in AFI models in which the same plant species were evaluated (Pavan et al, 2015;Castro-Castellon et al, 2016;Wang et al, 2015;Choudhury et al, 2019) and it could be explained due to the number of plants used in our models and the contact time with the water.…”

Section: Discussioncontrasting

confidence: 57%

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Changes in cyanobacterial density due to application of Artificial Floating Island model with macrophytes: an experimental case study in a tropical reservoir

Ramı́rez-Garcı́a¹,

Chicalote-Castillo²

2020

J Limnol

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The Valle de Bravo (VB) reservoir is part of an important hydraulic system that provides about 40% of potable water to 21.5 million inhabitants of the Metropolitan Zone of Mexico City (Mexico). This reservoir shows deterioration in water quality due to its current eutrophic condition, which favors the recurring of cyanobacterial blooms. To date, there are no restoration strategies for this reservoir, so the use of eco-technologies such as Artificial Floating Islands (AFI) is proposed for the removal of nutrients and the improvement of water quality. Therefore, in this work AFIs have been implemented using two macrophytes (Phragmites australis (AFI-P) and Schoenoplectus sp. (AFI-S)) to evaluate the presence and distribution of potentially toxic cyanobacteria in relation to physicochemical variations at the AFI sites. The study was carried out over a period of 24 months (October 2016 -September 2018) divided into two cycles (C-I and C-II) with a dry and rainy season each. Cyanobacteria were the dominant group in the phytoplankton during all the study period. Nine potentially toxic cyanobacterial species were detected, with the predominance of Microcystis aeruginosa, Aphanizomenon yezoense, Pseudanabaena mucicola, Anabaena planctonica and Planktothrix agardhii. In this work, AFIs increased nitrates and had no effect on phosphates. Cyanobacteria were not reduced at AFI sites, however in rainy season in the second annual cycle (C-II) the concentrations of extracellular microcystins in the AFI-P and AFI-S were decreased while intracellular toxins were more strongly reduced only in the AFI-S. Each AFI had a specific effect on four out of five potentially toxic cyanobacteria. Thus, AFI-P promoted the increase of M. aeruginosa but reduced A. planctonica, while AFI-S promoted both A. yezoense and P. mucicola. The AFIs modified the dynamics among cyanobacteria particularly diazotrophic A. yezoense which was favored by nitrates and the other three species maintained their presence by the phosphates. M. aeruginosa, non-diazotrophic, responded to nitrates only in the absence of A. yezoense. Finally, in VB reservoir we found a mutually exclusive relationship between M. aeruginosa and A. yezoense likewise between A. planctonica and P. mucicola.

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Section: Discussioncontrasting

confidence: 57%

“…ex Steud. removes about 10 to 15 g m -2 of total N, 1 to 3 g m -2 of total P and reduces up to 45% the chlorophyll levels (Pavan et al, 2015;Castro-Castellon et al, 2016). Schoenoplectus tabernaemontani (C. C.…”

mentioning

confidence: 99%

Changes in cyanobacterial density due to application of Artificial Floating Island model with macrophytes: an experimental case study in a tropical reservoir

Ramı́rez-Garcı́a¹,

Chicalote-Castillo²

2020

J Limnol

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“…The root development of P. australis was constrained up to 40-cm deep after 3 years of plantation due to the toxic effects of digestate liquid fraction. On the other hand, Typha latifolia and Juncus maritimus did not establish themselves due to the high pollutant load [71].…”

Section: Plantsmentioning

confidence: 98%

Role of Microorganisms in the Remediation of Wastewater in Floating Treatment Wetlands: A Review

et al. 2020

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This article provides useful information for understanding the specific role of microbes in the pollutant removal process in floating treatment wetlands (FTWs). The current literature is collected and organized to provide an insight into the specific role of microbes toward plants and pollutants. Several aspects are discussed, such as important components of FTWs, common bacterial species, rhizospheric and endophytes bacteria, and their specific role in the pollutant removal process. The roots of plants release oxygen and exudates, which act as a substrate for microbial growth. The bacteria attach themselves to the roots and form biofilms to get nutrients from the plants. Along the plants, the microbial community also influences the performance of FTWs. The bacterial community contributes to the removal of nitrogen, phosphorus, toxic metals, hydrocarbon, and organic compounds. Plant–microbe interaction breaks down complex compounds into simple nutrients, mobilizes metal ions, and increases the uptake of pollutants by plants. The inoculation of the roots of plants with acclimatized microbes may improve the phytoremediation potential of FTWs. The bacteria also encourage plant growth and the bioavailability of toxic pollutants and can alleviate metal toxicity.

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“…• Nitrate assimilation, which seems to be controlled by an enzymatic process (Chamizo-Ampudia et al 2017;Pavan et al 2015;Sun et al 2017). • Nitrate removal by plants takes place only during the day of photosynthesis (Zhao et al 2018).…”

Section: Temporal Evolution Of Nitrates N-no 3 −mentioning

confidence: 99%

Performance assessment of nitrogen pollution purification by phytodepuration: case of Temacine pilot station (Algeria)

Hammadi

Seyd

Bebba

2019

Int. J. Environ. Sci. Technol.

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In Algeria, much progress has been made in implementing efficient and less expensive wastewater treatment processes. Phytodepuration is one of the processes that have shown their effectiveness in this area, because of its simplicity and low costs. The only experiment in Algeria is the pilot station located in the city of Temacine. This station is designed to treat 15 m 3 per day of urban wastewater. This work aims to assess the effectiveness in eliminating nitrogen pollution by phytodepuration and to verify whether it is well adapted to the studied region. For a period of one year, samples of raw and treated wastewater were collected and analyzed. The purification yields of the different pollutants were calculated. The results show that purification performance is good and exceeds 80% for all measured parameters. With regard to nitrogen pollution, the abatement rates reached 83.06% for ammonium, 70.44% for nitrites, 81.92% for nitrates and 83.20% in terms of total Kjeldahl nitrogen. These performances meet the standards recommended by the Algerian legislation. The water produced is of clean quality and can be reused in irrigation. In addition to its effectiveness in reducing nitrogen pollution, phytodepuration treatment seems to be very beneficial and well adapted to the study area, as the absence of noise, bad odors and the good coverage of the basin by flowers and plants, has largely allowed to preserve the environment in this region and to keep its tourist aspect. These results are encouraging to develop the use of the system in other localities.

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Screening of 18 species for digestate phytodepuration

Cited by 21 publications

References 30 publications

Changes in cyanobacterial density due to application of Artificial Floating Island model with macrophytes: an experimental case study in a tropical reservoir

Changes in cyanobacterial density due to application of Artificial Floating Island model with macrophytes: an experimental case study in a tropical reservoir

Role of Microorganisms in the Remediation of Wastewater in Floating Treatment Wetlands: A Review

Performance assessment of nitrogen pollution purification by phytodepuration: case of Temacine pilot station (Algeria)

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