Treatment efficiency of effluent prawn culture by wetland with floating aquatic macrophytes arranged in series

Henares, Matheus Nicolino Peixoto; Camargo, Antonio Fernando Monteiro

doi:10.1590/1519-6984.10413

Cited by 13 publications

(8 citation statements)

References 15 publications

(14 reference statements)

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“…Macrophytes present varied mechanisms which are favorable to the accumulation of metals, being able to absorb them into their fibrous roots, rhizomes or leaves . This buildup differs between species and parts of plant tissues (Henares and Camargo, 2014;Kumar et al, 2012). In general, the roots of macrophytes play a key role in the accumulation of substances.…”

Section: Discussionmentioning

confidence: 99%

Accumulation of copper by the aquatic macrophyte Salvinia biloba Raddi (Salviniaceae)

et al. 2017

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Aquatic macrophytes have properties and mechanisms which are useful for the removal of substances in solution, commonly used in phytoremediation processes in aquatic environments. This study evaluated the performance of copper (Cu) accumulation by Salvinia biloba Raddi (Salviniaceae) in different metal concentrations (1, 3 and 5 µg mL -1 ), as well as the control treatment, measured at intervals of 0, 7 and 14 days under laboratory conditions, with control as to pH and luminosity. After the experiment, the S. biloba biomass was washed, kiln dried, crushed and subjected to the process of digestion, and subsequently the accumulated copper content was determined by atomic absorption spectroscopy. The results showed that S. biloba is apt at accumulating copper, varying significantly between different treatments and days of exposure to the contaminant, as well as its interaction (treatment × days). The highest accumulation values were observed in treatment with 5 µg mL -1 , which at 14 days, with 11,861 µg g-1 of copper. We observed symptoms of toxicity and mortality in plants, probably indicating the effect of copper on the species when at high levels. Salvinia biloba is an efficient species in the removal of copper in solution, its recommendation as a remediating agent in aquatic ecosystems being possible.Keywords: aquatic ecosystems, phytoremediation, aquatic plants, bioaccumulation, water resources.Acumulação de cobre pela macrófita aquática Salvinia biloba Raddi (Salviniaceae) ResumoMacrófitas aquáticas apresentam propriedades e mecanismos úteis à remoção de substâncias presentes em solução, comumente, utilizadas em processos de fitorremediação de ambientes aquáticos. Este estudo avaliou o desempenho de acumulação de cobre (Cu) por Salvinia biloba Raddi (Salviniaceae) em diferentes concentrações do metal (1, 3 e 5 µg mL), além do tratamento controle, avaliados em intervalos de 0, 7 e 14 dias, sob condições laboratoriais, com controle de pH e luminosidade. Após o experimento a biomassa de S. biloba, foi lavada, seca em estufa, triturada e submetida ao processo de digestão, sendo, posteriormente, o teor de cobre acumulado determinado por espectroscopia de absorção atômica. Os resultados evidenciaram que S. biloba é hábil em acumular cobre em sua biomassa, variando significativamente entre os diferentes tratamentos e dias de exposição ao contaminante, bem como por sua interação (tratamentos × dias). Os maiores teores de acúmulo foram observados no tratamento com 5 µg mL -1 , que aos 14 dias apresentou até 11.861 µg g -1 de Cu. Observamos sintomas de toxicidade e mortalidade nas plantas, evidenciando, provavelmente, o efeito do cobre sobre a espécie quando em elevados níveis. Salvinia biloba é uma espécie eficiente na remoção do cobre em solução, sendo possível sua recomendação como agente de remediação em ecossistemas aquáticos.Palavras-chave: ecossistemas aquáticos, fitorremediação, plantas aquáticas, bioacumulação, recursos hídricos. Freitas, F. et al.

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Section: Discussionmentioning

confidence: 99%

Accumulation of copper by the aquatic macrophyte Salvinia biloba Raddi (Salviniaceae)

et al. 2017

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“…Besides the retention and absorption of particulate forms of N and P, some authors reported that the substrate itself favours the precipitation and sedimentation of organic and inorganic particles (Brix, Koottatep & Laugesen, ; Kumar & Zhao, ; Weller et al., ). In the CWs without substrates, the retention of particulate material, removal of TSS, and the retention of TP and TKN were lower than in the CWs with substrates, probably because the particulate material is only retained by sedimentation and/or by the roots of the free‐floating macrophytes (Henares & Camargo, ). The highest removal rates of both inorganic forms of nitrogen, phosphorus and DKN in wetland Ec can be attributed to the uptake by the macrophytes, as previously documented (Carballeira et al., ; Henry‐Silva & Camargo, ; Kumari & Tripathi, ; Vera, García, Sáez, Moragas & Vidal, ).…”

Section: Discussionmentioning

confidence: 99%

The efficiency of free-floating and emergent aquatic macrophytes in constructed wetlands for the treatment of a fishpond effluent

2018

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Many studies have evaluated the efficiency of constructed wetlands (CWs) for the treatment of fishpond effluents, but only a few have compared between CWs with emergent and free-floating macrophytes and assessed the amount of nutrients removed only by the macrophytes. For this purpose, we performed an experiment during 113 days in which we treated a fishpond effluent using four different CWs:(i) with the free-floating macrophyte Eichhornia crassipes (Ec); (ii) without E. crassipes (WEc); (iii) with a substrate and the emergent macrophyte Typha domingensis (Td); (iv) with a substrate and without T. domingensis (WTd). To verify the efficiency of CWs, the removal rates of total suspended solids (TSS), dissolved (DKN) and total (TKN) Kjeldahl nitrogen, total inorganic nitrogen (TIN), total phosphorus (TP) and Porthophosphate (P-ORT) were analysed using ANOVA-rm. The removal of TP and TKN was higher in CWs with substrate than without substrate. The removal of P-ORT, TIN and DKN was higher in Ec compared to others CWs. The average removal of TSS in Ec (78.9%), WTd (77.4%) and Td (75.0%) was higher than in WEc (68.3%).The contribution of E. crassipes towards the removal of all forms of N and P was higher than of T. domingensis. This greater contribution of E. crassipes can be due to the higher biomass that this species gained in comparison with T. domingensis.

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“…The most studied species is Eichhornia crassipes, due to its characteristics that provide greater adaptability and excellent vegetative growth [38,39].…”

Section: Methodsmentioning

confidence: 99%

Proposal for Implementation of Green Roof Project Using the Wetland Technique

Alves

Vazquez

Peçanha

et al. 2020

J. sustain. dev. energy water environ. syst.

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This work presents a study on methods of wetland systems and the design of a prototype of green roof design in a practical example, with the objective of presenting a sustainable technique for reuse of rainwater. The use of the wetland system as a technique for collecting and treating wastewater can be one of the possible solutions to the lack of potable water in large urban centres, since the system is capable of filtering rainwater. As a result, a proposed green roof design is presented using a wetland system built to retain and treat rainwater for reuse with non-potable purposes. This system, in addition to integrating landscape aspects of the environment, presents low cost of implementation and can be a viable alternative for water reuse. This study contributes to improve knowledge as this type of technique is not yet used in Brazil, allowing future work on the economic viability and construction of the prototype.

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Treatment efficiency of effluent prawn culture by wetland with floating aquatic macrophytes arranged in series

Cited by 13 publications

References 15 publications

Accumulation of copper by the aquatic macrophyte Salvinia biloba Raddi (Salviniaceae)

Accumulation of copper by the aquatic macrophyte Salvinia biloba Raddi (Salviniaceae)

The efficiency of free-floating and emergent aquatic macrophytes in constructed wetlands for the treatment of a fishpond effluent

Proposal for Implementation of Green Roof Project Using the Wetland Technique

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