Plant Nutrient Phytoremediation Using Duckweed

Landesman, Louis; Fedler, Clifford B.; Duan, Runbin

doi:10.1007/978-90-481-9625-8_17

Cited by 29 publications

(19 citation statements)

References 101 publications

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“…For ADF, the values obtained in the present study were slightly higher than the previously reported value of 15.6% for Lemna gibba (Landesman et al, 2010) and lower than the previously reported values of 35.8 to 41.4% for Salvinia molesta (Leterme et al, 2009). For ash, values of 23% in DM for L. laevigatum (Aponte et al 2013) and 20.1% in DM for Salvinia molesta (Leterme et al, 2009) have been reported; our results were slightly lower than those reported by other authors.…”

Section: Chemical Compositioncontrasting

confidence: 96%

Production and chemical composition of hydrophytes cultivated in aquaponics

Martínez-Yáñez

Albertos-Alpuche

Guzmán-Mendoza

et al. 2018

Ecosist. Recur. Agropec.

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ABSTRACT. Aquaponics can be de ned as the integration of hydroponic plant production in a recirculating aquaculture system and has been proposed as a sustainable method to control the accumulation of waste produced by sh farming. The objective of the present study was to determine the biomass production and its feed potential of Myriophyllum aquaticum, Limnobium laevigatum, Lemna minor and Salvinia molesta grown in aquaponics. To evaluate the chemical compositions of these species, dry matter, organic matter, crude protein, neutral detergent ber, acid detergent ber, lignin, ash, ether extract, gross energy, calcium, and phosphorus of the aquatic plants were determined. Based on the results of this study, aquatic plants are considered to ful ll most of the nutritional requirements of productive animal species. Therefore, it is feasible to use them as the main ingredient in whole animal rations, with an emphasis on Myriophyllum aquaticum and Lemna minor as alternative food sources for di erent animal species, opening the way to aquaponic fodder production. Aquatic plants are interesting alternative, unconventional feed sources, especially because their high growth rates and nutritional qualities make it feasible to use them for animal consumption. However, Salvinia molesta has no value as fodder, especially because of its lignin concentration, which could a ect the fodder digestibility.Key words: Aquatic plants, biomass, fodder, nutritional characterization, Recirculation aquaculture systems (RAS) RESUMEN. La acuaponía es una alternativa sustentable para el control de los desechos acumulados que se producen en los cultivos acuícolas, puede ser de nida como la integración del cultivo de plantas en camas hidropónicas en un sistema de recircualción acuícola. El objetivo del presente estudio fue determinar la producción de biomasa y evaluar el potencial forrajero por medio de la composición química de Myriophyllum aquaticum, Limnobium laevigatum, Lemna minor y Salvinia molesta cultivadas en acuaponía. Se determino el contenido de materia seca, materia orgánica, proteína cruda, bra neutro detergente, bra ácido detergente, lignina, cenizas, extracto étereo, energía bruta, calcio y fósforo. Las plantas acuáticas evaluadas cubren los requerimientos nutricionales de la mayoría de las especies animales productivas, siendo posible su incorporación como ingredientes en las raciones para animales, en particular Myriophyllum aquaticum y Lemna minor son una alternativa para la alimentación animal, como forrajes acuapónicos. Las hidró tas son una fuente no convencional y alternativa de forraje, por su rápido crecimiento y calidad nutrimental, para el consumo animal. Mientras que Salvinia molesta, no tiene valor como forraje por su concentración de lignina,

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Section: Chemical Compositioncontrasting

confidence: 96%

Production and chemical composition of hydrophytes cultivated in aquaponics

Martínez-Yáñez

Albertos-Alpuche

Guzmán-Mendoza

et al. 2018

Ecosist. Recur. Agropec.

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“…As a result, the cove-water can be classified as eutrophic ( Carlson, 1977 ). The presence of dense mats of three duckweed species ( Baker, 2018 ) also indicates that the water is eutrophic ( Landesman et al, 2011 ). The likely source of nutrients is the Clinton River Bypass ( Figure 1 ), a waterway high in nutrient and sediment pollution ( Healy et al, 2008 ).…”

Section: Discussionmentioning

confidence: 99%

Students in a Course-Based Undergraduate Research Experience Course Discovered Dramatic Changes in the Bacterial Community Composition Between Summer and Winter Lake Samples

et al. 2021

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Course-based undergraduate research experience (CURE) courses incorporate high-impact pedagogies that have been shown to increase undergraduate retention among underrepresented minorities and women. As part of the Building Infrastructure Leading to Diversity program at the University of Detroit Mercy, a CURE metagenomics course was established in the winter of 2019. Students investigated the bacterial community composition in a eutrophic cove in Lake Saint Clair (Harrison Township, MI, United States) from water samples taken in the summer and winter. The students created 16S rRNA libraries that were sequenced using next-generation sequencing technology. They used a public web-based supercomputing resource to process their raw sequencing data and web-based tools to perform advanced statistical analysis. The students discovered that the most common operational taxonomic unit, representing 31% of the prokaryotic sequences in both summer and winter samples, corresponded to an organism that belongs to a previously unidentified phylum. This result showed the students the power of metagenomics because the approach was able to detect unclassified organisms. Principal Coordinates Analysis of Bray–Curtis dissimilarity index data showed that the winter community was distinct from the summer community [Analysis of Similarities (ANOSIM) r = 0.59829, n = 18, and p < 0.001]. Dendrograms based on hierarchically clustered Pearson correlation coefficients of phyla were divided into a winter clade and a summer clade. The conclusion is that the winter bacterial population was fundamentally different from the summer population, even though the samples were taken from the same locations in a protected cove. Because of the small class sizes, qualitative as well as statistical methods were used to evaluate the course’s impact on student attitudes. Results from the Laboratory Course Assessment Survey showed that most of the respondents felt they were contributing to scientific knowledge and the course fostered student collaboration. The majority of respondents agreed or strongly agreed that the course incorporated iteration aspects of scientific investigations, such as repeating procedures to fix problems. In summary, the metagenomics CURE course was able to add to scientific knowledge and allowed students to participate in authentic research.

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“…Duckweed species have been used for over 30 years to recover nutrients from wastewaters [ 9 - 18 ]. They are also a good source of proteins and starch, which are essential for the production of value-added products such as animal feed and also for bio-ethanol applications [ 19 - 21 ].…”

Section: Introductionmentioning

confidence: 99%

Dual application of duckweed and azolla plants for wastewater treatment and renewable fuels and petrochemicals production

Muradov

Taha

Miranda

et al. 2014

Biotechnol Biofuels

112

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BackgroundShortages in fresh water supplies today affects more than 1 billion people worldwide. Phytoremediation strategies, based on the abilities of aquatic plants to recycle nutrients offer an attractive solution for the bioremediation of water pollution and represents one of the most globally researched issues. The subsequent application of the biomass from the remediation for the production of fuels and petrochemicals offers an ecologically friendly and cost-effective solution for water pollution problems and production of value-added products.ResultsIn this paper, the feasibility of the dual application of duckweed and azolla aquatic plants for wastewater treatment and production of renewable fuels and petrochemicals is explored. The differences in absorption rates of the key wastewater nutrients, ammonium and phosphorus by these aquatic macrophytes were used as the basis for optimization of the composition of wastewater effluents. Analysis of pyrolysis products showed that azolla and algae produce a similar range of bio-oils that contain a large spectrum of petrochemicals including straight-chain C10-C21 alkanes, which can be directly used as diesel fuel supplement, or a glycerin-free component of biodiesel. Pyrolysis of duckweed produces a different range of bio-oil components that can potentially be used for the production of “green” gasoline and diesel fuel using existing techniques, such as catalytic hydrodeoxygenation.ConclusionsDifferences in absorption rates of the key wastewater nutrients, ammonium and phosphorus by different aquatic macrophytes can be used for optimization of composition of wastewater effluents. The generated data suggest that the composition of the petrochemicals can be modified in a targeted fashion, not only by using different species, but also by changing the source plants’ metabolic profile, by exposing them to different abiotic or biotic stresses. This study presents an attractive, ecologically friendly and cost-effective solution for efficient bio-filtration of swine wastewater and petrochemicals production from generated biomass.

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Plant Nutrient Phytoremediation Using Duckweed

Cited by 29 publications

References 101 publications

Production and chemical composition of hydrophytes cultivated in aquaponics

Production and chemical composition of hydrophytes cultivated in aquaponics

Students in a Course-Based Undergraduate Research Experience Course Discovered Dramatic Changes in the Bacterial Community Composition Between Summer and Winter Lake Samples

Dual application of duckweed and azolla plants for wastewater treatment and renewable fuels and petrochemicals production

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