Assessment of autochthonous aquatic macrophytes with phytoremediation potential for dairy wastewater treatment in floating constructed wetlands

Queiroz, Rita de Cássia Souza de; Lôbo, Ivon Pinheiro; Ribeiro, Vinícius de Souza; Rodrigues, Luciano Brito; Neto, José Adolfo de Almeida

doi:10.1080/15226514.2019.1686603

Cited by 30 publications

(18 citation statements)

References 39 publications

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“…These characteristics vary in response to changes in the composition of the wastewater (Kwon et al 2013), as well as in response to environmental parameters such as temperature and light (Iasimone et al 2018). Growth and nutrient uptake are also species specific (Khatun et al 2016;Yongpisanphop et al 2017;Queiroz et al 2020). Here, uptake of NO 3 -N, NH 4 + -N and PO 4 3 -P by L. minor was analysed under controlled conditions using a synthetic aquaculture wastewater and various plant densities, in order to obtain quantitative information on the remediation potential of this species.…”

Section: Discussionmentioning

confidence: 99%

Estimation of the potential of Lemna minor for effluent remediation in integrated multi-trophic aquaculture using newly developed synthetic aquaculture wastewater

2021

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Aquaculture is an important source of animal protein and a key contributor to global food security. However, aquaculture can exert a negative effect on the aquatic environment due to the release of effluents containing high nutrient levels. In integrated multi-trophic aquaculture (IMTA), the waste produced by one species is the input for another, referred to as extractive species (ES). Potential ES include plants. In the present study, it was explored whether Lemna minor can be used to remove nitrogen and phosphorus from aquaculture wastewater. A representative synthetic wastewater was designed based on the composition of aquaculture effluents found in the literature. Synthetic wastewater was found to be a suitable medium for growth of Lemna minor, and plants readily took up NH4+-N, NO3-N and PO43--P. In particular, NH4+-N concentrations rapidly decreased. The highest removal rates per square meter of water surface, calculated for NH4+-N, NO3-N and PO43--P, were, respectively, 158, 206 and 32 mg·m-2·day-1, and these rates were achieved at a plant surface density of 80%. As removal of nutrients is essentially a surface area–related process, the effect of plant density on nutrient uptake was determined. Uptake of nutrients per square meter of surface area was highest at the highest plant density. Yet, when uptake rates were calculated per square meter of water area covered by Lemna fronds, the highest removal rates were found at the lowest plant density, and this is likely to be associated with a reduced intraspecific competition. The present work enables the calculation of potential nutrient uptake by Lemna minor and lays the foundation for a more scientific approach to the design of duckweed-based aquaculture wastewater treatment systems.

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Section: Discussionmentioning

confidence: 99%

Estimation of the potential of Lemna minor for effluent remediation in integrated multi-trophic aquaculture using newly developed synthetic aquaculture wastewater

2021

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“…Among these coagulation-flocculation are the most commonly used methods [70]. Coagulation is the addition of a coagulant into wastewater to treat it, and is also a popular method of textile wastewater removal [71]. Electrodialysis, reverse osmosis, and ion exchange process are some of the tertiary treatment processes for textile wastewater treatment [72].…”

Section: Available Technologies For Treatment Of Textile Effluentmentioning

confidence: 99%

Implementation of Floating Treatment Wetlands for Textile Wastewater Management: A Review

et al. 2020

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The textile industry is one of the most chemically intensive industries, and its wastewater is comprised of harmful dyes, pigments, dissolved/suspended solids, and heavy metals. The treatment of textile wastewater has become a necessary task before discharge into the environment. The textile effluent can be treated by conventional methods, however, the limitations of these techniques are high cost, incomplete removal, and production of concentrated sludge. This review illustrates recent knowledge about the application of floating treatment wetlands (FTWs) for remediation of textile wastewater. The FTWs system is a potential alternative technology for textile wastewater treatment. FTWs efficiently removed the dyes, pigments, organic matter, nutrients, heavy metals, and other pollutants from the textile effluent. Plants and bacteria are essential components of FTWs, which contribute to the pollutant removal process through their physical effects and metabolic process. Plants species with extensive roots structure and large biomass are recommended for vegetation on floating mats. The pollutant removal efficiency can be enhanced by the right selection of plants, managing plant coverage, improving aeration, and inoculation by specific bacterial strains. The proper installation and maintenance practices can further enhance the efficiency, sustainability, and aesthetic value of the FTWs. Further research is suggested to develop guidelines for the selection of right plants and bacterial strains for the efficient remediation of textile effluent by FTWs at large scales.

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“…Effluents and slurries from the dairy industry contain a spectrum of large quantities of casein, lactose and fats, in addition to inorganic salts, besides detergents, sanitizers and so forth used for washing 4–7 . Thus the great fluctuations in industrial dairy wastewater quality and quantity, depend largely on the amount of milk processed and the type of products manufactured 2,5,8 …”

Section: Introductionmentioning

confidence: 99%

“…To address the need to maintain and preserve public health and hygiene from the risks of discharging this type of wastewater to natural aquatic systems without treatment, there are various conventional treatment methods such as coagulation/flocculation, oxidation process, activated sludge process, membrane bioreactors and membrane separation. However, these methods are considered not feasible, owing to their complication, high cost required for operation and maintenance, and their input requirements of electrical energy and chemicals, and resulting in massive byproducts in the form of chemical sludge 8–10 . Accordingly, the use of green infrastructure systems as natural‐based processes is the optimal sustainable solution for wastewater treatment rather than the traditional methods 11–16 .…”

Section: Introductionmentioning

confidence: 99%

“…In addition, subsurface flow constructed wetland provides the additional advantage of minimization of odor problems 23 . Recently, many studies have demonstrated the efficiency of constructed wetlands for food processing wastewater treatment such as catfish processing wastewater, 24 slaughterhouse wastewater, 23 bulk milk cooling tank, 19 olive mill wastewater, 20,25 fish processing plant, 26 abattoir effluents, 27 palm oil extraction process, 21 dairy wastewater, 1,8,10,28,29 coffee processing, 30,31 and fruit and vegetation processing plant 32 . However, at the best of our knowledge, the treatment of real industrial dairy wastewater via horizontal subsurface flow‐constructed wetlands without any pretreatment has not been widely reported.…”

Section: Introductionmentioning

confidence: 99%

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Green sustainable technology for biotreatment of actual dairy wastewater in constructed wetland

Mohammed

Ismail

2020

J of Chemical Tech & Biotech

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BACKGROUND Due to the environmental problems caused by food processing wastewaters and their complex and expensive treatment methods, it becomes mandatory to seek a sound, sustainable and environmentally friendly solution such as constructed wetland (CW). This study aimed to investigate the potential of treating real dairy wastewater in CW. Six horizontal subsurface flow CW microcosms were set up using different conventional and cost‐effective supporting media, which were gravel, soil and sand. All the CWs were fueled continuously with real fresh dairy wastewater. Five of the six CW microcosms were planted with Canna indica. The remaining CW microcosm was kept unplanted and was considered as a control microcosm. RESULTS The results revealed significant removal efficiencies of organic matter (as chemical oxygen demand) up to 89.92%, 97.6%, 95.8%, 97.2%, 97.3% and 98.2%, for CW1, CW2, CW3, CW4, CW5 and CW6, respectively. Also, high removal efficiencies of ammonium were observed in the range of 98.4–82.0%, whereas removal efficiencies of total suspended solids were in the range of 99.2–93.4%. CONCLUSION The results demonstrated that the dominant mechanisms for organics and ammonium removal were biodegradation processes. These promising results confirmed the validity of using constructed wetland as a sustainable cost‐effective approach for dairy wastewater treatment. © 2020 Society of Chemical Industry

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Assessment of autochthonous aquatic macrophytes with phytoremediation potential for dairy wastewater treatment in floating constructed wetlands

Cited by 30 publications

References 39 publications

Estimation of the potential of Lemna minor for effluent remediation in integrated multi-trophic aquaculture using newly developed synthetic aquaculture wastewater

Estimation of the potential of Lemna minor for effluent remediation in integrated multi-trophic aquaculture using newly developed synthetic aquaculture wastewater

Implementation of Floating Treatment Wetlands for Textile Wastewater Management: A Review

Green sustainable technology for biotreatment of actual dairy wastewater in constructed wetland

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