Pre treatment of Duckweed Biomass, Obtained from Wastewater Treatment Ponds, for Biogas Production

Tonon, G.; Magnus, Bruna Scandolara; Mohedano, Rodrigo A.; Leite, Wanderli Rogério Moreira; Costa, Rejane Helena Ribeiro da; Filho, Paulo Belli

doi:10.1007/s12649-016-9800-1

Cited by 17 publications

(9 citation statements)

References 23 publications

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“…After 9 July, productivity decreased, resulting in total productivities of 5.2 ± 1.7, 6.1 ± 2.5 and 4.7 ± 1.7 g DW m −2 d −1 for PP, PM and SM, respectively (Table 2). These average productivities are comparable to productivities recorded on municipal treatment water under a sub-temperate climate, of 5.72 g DW m −2 d −1 [40].…”

Section: Duckweed Productivitysupporting

confidence: 79%

Agronomic and Environmental Performance of Lemnaminor Cultivated on Agricultural Wastewater Streams—A Practical Approach

et al. 2021

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This study investigated the potential of Lemna minor to valorise agricultural wastewater in protein-rich feed material in order to meet the growing demand for animal feed protein and reduce the excess of nutrients in certain European regions. For this purpose, three pilot-scale systems were monitored for 175 days under outdoor conditions in Flanders. The systems were fed with the effluent of aquaculture (pikeperch production—PP), a mixture of diluted pig manure wastewater (PM), and a synthetic medium (SM). PM showed the highest productivity (6.1 ± 2.5 g DW m−2 d−1) and N uptake (327 ± 107 mg N m−2 d−1). PP yielded a similar productivity and both wastewaters resulted in higher productivities than SM. Furthermore, all media showed similar P uptake rates (65–70 P m−2 d−1). Finally, duckweed had a beneficial amino acid composition for humans (essential amino acid index = 1.1), broilers and pigs. This study also showed that the growing medium had more influence on the productivity of duckweed than on its amino acid composition or protein content, with the latter being only slightly affected by the different media studied. Overall, these results demonstrate that duckweed can effectively remove nutrients from agriculture wastewaters while producing quality protein.

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Section: Duckweed Productivitysupporting

confidence: 79%

Agronomic and Environmental Performance of Lemnaminor Cultivated on Agricultural Wastewater Streams—A Practical Approach

et al. 2021

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“…TN and TP concentrations of wastewater decreased from 22.2 and 2.2 mg L −1 to 4.5 and 0.4 mg L −1 in 17 days, respectively. 19 However, few study focused on duckweed system treating low-concentration eutrophic water in pilot scale. In this study, we first reported the water quality of eutrophic water improved to Grade II.…”

Section: Resultsmentioning

confidence: 99%

“…For instance, in order to highlight the potential of duckweed biomass harvested from wastewater treatment plant for methane production, a pilot system, comprising an anaerobic pretreatment and two duckweed ponds designed in series (10 m 2 each), was operated with real domestic sewage. 19 …”

Section: Introductionmentioning

confidence: 99%

Duckweed systems for eutrophic water purification through converting wastewater nutrients to high-starch biomass: comparative evaluation of three different genera (Spirodela polyrhiza, Lemna minor and Landoltia punctata) in monoculture or polyculture

et al. 2018

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“…Whereas duckweeds' effectiveness in recovery of nutrients such as nitrogen and phosphorus from municipal and agricultural wastewater has potential in im-proving the quality of effluent discharged into natural waterways (Dalu and Ndamba, 2003;Ge et al, 2012), their disposal has been a disincentive for use (Cheng and Stomp, 2009). However, recent interest in duckweeds has increased their utilization as a biorenewable energy source, animal and human feed supplement, in bioplastics, and for phytotoxicity tests (Appenroth et al, 2017;Radic´et al, 2011;Tonon et al, 2017;Van der Spiegel et al, 2013;Zeller et al, 2013). Their noncompetition with soil-based crops for growing space makes them suitable for the production of biomass for soil amendment.…”

Section: Introductionmentioning

confidence: 99%

Biomass, Nitrogen Uptake and Content of Wolffia arrhiza Depends on Strength of Swine Lagoon Water

Chikuvire

Muchaonyerwa

Zengeni

2018

Water Environment Research

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Studies focusing on manipulation of growth conditions for duckweed Wolffia arrhiza to promote biomass for crop nutrient supply, are scarce. The effects of swine lagoon water (SLW) concentration and its replenishment and harvest regimes on selected properties of W. arrhiza were investigated. Dry matter and average growth rate of W. arrhiza were not affected by SLW replenishment periods, whereas the properties decreased with increasing concentration of SLW. The carbon and carbon/nitrogen content increased as the period between solution replenishment increased and as SLW concentration declined from 15 to 5%. Harvesting regimes did not affect the nitrogen content and uptake of duckweed, NH þ 4 -N, and mineral-N of SLW. Harvesting duckweed once per week resulted in higher growth rate and biomass, compared with twice a week. Findings from this study suggest that W. arrhiza cultured on 10% SLW and harvested once a week yields biomass with nitrogen content suitable for crop nutrient supply. Water Environ. Res., 90, 2066Res., 90, (2018.

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Pre treatment of Duckweed Biomass, Obtained from Wastewater Treatment Ponds, for Biogas Production

Cited by 17 publications

References 23 publications

Agronomic and Environmental Performance of Lemnaminor Cultivated on Agricultural Wastewater Streams—A Practical Approach

Agronomic and Environmental Performance of Lemnaminor Cultivated on Agricultural Wastewater Streams—A Practical Approach

Duckweed systems for eutrophic water purification through converting wastewater nutrients to high-starch biomass: comparative evaluation of three different genera (Spirodela polyrhiza, Lemna minor and Landoltia punctata) in monoculture or polyculture

Biomass, Nitrogen Uptake and Content of Wolffia arrhiza Depends on Strength of Swine Lagoon Water

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