Macrófitas flotantes en el tratamiento de aguas residuales: una revisión del estado del arte

Martelo, Jorge; Lara-Borrero, Jaime Andrés

doi:10.17230/ingciencia.8.15.11

Cited by 41 publications

(24 citation statements)

References 34 publications

(25 reference statements)

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“…No obstante, su rápida propagación vegetativa podría terminar cubriendo la superficie del agua y evitar el intercambio de gases entre la atmósfera y el agua, lo cual provocaría el efecto inverso (Martelo & Lara, 2012). A pesar que la estación E6 obtuvo una calificación regular, muy cercana a ella existía la presencia de criaderos de cerdos.…”

Section: Discussionunclassified

Variación espacial de la comunidad de macroinvertebrados acuáticos en la zona litoral del humedal costero Santa Rosa, Lima, Perú

Velásquez

Araujo

2020

RBT

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Coastal wetlands are sensitive ecosystems of high productivity because of the ecosystem services that they provide, like water purification, flood reduction, protection of marine coasts. In addition, coastal wetlands are places of great biological diversity. The objective of the present study was to determine the community structure of the benthic macroinvertebrates in relation to the spatial variations in the littoral zone of the Santa Rosa wetland, Lima, Peru. The study was divided into six bimonthly periods from August 2015 to June 2016, we established eight sampling sites: three sites in the main lagoon, two sites in the lagoon arm and two sites in isolated small pools. We carried out the sampling with a hand net of 250μm mesh aperture with 3 replicas for each site. The 8 sites evaluated were environmentally characterized, the physicochemical parameters of the water were recorded for each sampling site and the variations of the water level of the wetland in each sampling campaign were determined through a wooden post with marks in centimeters. We collected a total of 28655 organisms distributed in 76 species. Diptera and Coleoptera were the orders with greatest richness, with 24 and 19 species respectively. The most abundant species were Buenoa sp. (Hemiptera: Notonectidae), Ischnura sp. (Odonata: Coenagrionidae), Chironomus sp. and Goeldichironomus sp. (Diptera: Chironomidae); these four genera represented 62.43% of the total abundance. In the spatial variation, most sites shared the same structure and composition of macroinvertebrates; this was expected because they are connected to the main water body temporarily or permanently, which consequently gives them greater stability and resilience. Only the sites with less depth and extension on the one side and scarce aquatic vegetation and anthropogenic impact on the other side were separated from the general set. Despite the variety of impacts that the wetland suffers, it was observed that the deeper and more vegetated sites are more resilient than the areas exposed to impact and with less water and vegetation. On the other hand, the physicochemical parameters of water at one site (E1) differentiate the community in the absence of impact.

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Section: Discussionunclassified

Variación espacial de la comunidad de macroinvertebrados acuáticos en la zona litoral del humedal costero Santa Rosa, Lima, Perú

Velásquez

Araujo

2020

RBT

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“…These plants are known for their ability to remove nutrients and for creating favorable conditions in the environment for organic matter degradation (Goldoni et al, 2014). A promising method is the use of floating emergent macrophytes, where plants grow in a hydroponic environment, artificially floating in rafts rather than being rooted in the sediment (Headly and Tanner, 2012;Martelo and Borrero, 2012). This method offers the advantage of composing a system of simple operation and low maintenance to the treatment of effluents.…”

Section: Introductionmentioning

confidence: 99%

Removal of ammoniacal nitrogen from municipal landfill leachate with floating <i>Typha domingensis</i> (Typhaceae)

2020

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A promising method for the treatment of effluents is the use of floating macrophytes. Ammoniacal nitrogen is a typical compound present in urban landfill leachates and its removal is important due its toxicity to several organisms. Therefore, the study evaluated Typha domingensis survival and nitrification potential artificially floating in domestic solid waste leachate. Plants were exposed for 35 days to leachate (100, 75 and 50 %) and to rainwater with N:P:K (control). Dissolved oxygen (DO) of the treatments was periodically measured, and ammoniacal nitrogen, nitrite and nitrate were analyzed before and after exposure. At the end of the experiment, plant survival rate was calculated. After two weeks, DO increased twice in the control, three times in 50 % leachate, four times in 75 % leachate, and eight times in 100 % leachate. At the end of the experiment, ammoniacal nitrogen was no longer detected, there was a significant reduction of nitrite, and a significant increase of nitrate in the treatments containing leachate. Plant survival was higher in those individuals exposed to 100 % leachate and decreased at lower leachate concentrations: 98 %, 94 %, 92 %, and 86 %. The study demonstrated that the ammoniacal nitrogen concentration of the leachate was not toxic to T. domingensis, and that it was efficient in the removal of this compound from the effluent, indicating that the species may be used artificially floating for the removal of this contaminant from domestic solid waste landfill leachate when in low concentrations.

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“…Aquatic macrophytes have been used in phytoremediation programs with metals in tropical regions. Their use has shown high rates of heavy metal removal of 85% -95% for iron, copper, zinc, cadmium, arsenic and chrome with plants of tested species such as Eichhornia crassipes, Pistia stratiotes, Lemna minor, Echinochloa crusgalli, among other macrophytes (Pereira et al, 2011;Martelo and Lara Borrero, 2012;Silva et al, 2013). Peng et al (2017) cite that E. crusgalli has potential for phytoremediation of Cd in soils, but there is no data for water or how much time is required to perform the phytoremediation process.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of ecotoxicity of contaminated water for validation of phytoremediation time

Fernandes¹,

Roque²,

Fonseca³

2020

Rev. ambiente água

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Phytoremediation has been used as an alternative for removal of heavy metals in aquatic environments, but plant residence time and toxicity reduction need to be studied. Ecotoxicological bioassays and root anatomic studies were conducted in order to validate the phytoremediation of Echinochloa crus-galli L. at three different ages. The experiment was conducted using E. crus-galli seeds with processing factorial experimental design (2x3) and four replicates. Cadmium presence and absence (0.8 and 0 mg L-1) at three times (20, 30, and 45 days after germination). Cd levels were quantified by flame atomic absorption spectroscopy on both aerial parts and roots. A bioassay was performed testing both acute and chronic effects using microcrustacean Daphnia similis with the purpose of evaluating phytoremediation efficiency. Regardless of biomass, E. crus-galli L. can be used for 16 to 19 days for 45 days after germination (DAG), tolerating the phytotoxicity of this metal. The residual solution after phytoremediation had chronic effect on D. similis, indicating that the time taken was not sufficient to reduce the toxicity of the solution. Thus, ecotoxicological essays are important tools in evaluating the efficiency of this type of process. While E. crus-galli L. is a valuable tool in Cd phytoremediation programs, exposure time must be higher than 19 days to reduce concentrations of this metal in the water to conform to the CONAMA 357/2005 e 430/2011 standards.

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Macrófitas flotantes en el tratamiento de aguas residuales: una revisión del estado del arte

Cited by 41 publications

References 34 publications

Variación espacial de la comunidad de macroinvertebrados acuáticos en la zona litoral del humedal costero Santa Rosa, Lima, Perú

Variación espacial de la comunidad de macroinvertebrados acuáticos en la zona litoral del humedal costero Santa Rosa, Lima, Perú

Removal of ammoniacal nitrogen from municipal landfill leachate with floating <i>Typha domingensis</i> (Typhaceae)

Evaluation of ecotoxicity of contaminated water for validation of phytoremediation time

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