Daphnia magna as biological harvesters for green microalgae grown on recirculated aquaculture system effluents

Gorzelnik, Stanley A.; Zhu, Xinyu; Angelidaki, Irini; Koski, Marja; Valverde-Pérez, Borja

doi:10.1016/j.scitotenv.2023.162247

Cited by 13 publications

(3 citation statements)

References 58 publications

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“…Several studies explored the use of photobioreactors to treat AWW. The photobioreactors offer more control in the system with a treatment efficiency of TN and ammonia to be 50-70% and 93%, while the removal of TOC and TP was 82.27% and 100%, respectively (Gorzelnik et al 2023;He et al 2023). The existence of carbon dioxide (CO 2 ) is essential for the growth of microalgae.…”

Section: The Use Of Microalgaementioning

confidence: 99%

Aquaculture from inland fish cultivation to wastewater treatment: a review

Kashem,

Das,

Hawari

et al. 2023

Rev Environ Sci Biotechnol

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The aquaculture industry is rapidly developing, generating a high amount of wastewater. Inland aquaculture effluents contain nutrients and other substances that can cause eutrophication and the emergence of resistive organisms if released into the environment. Hence, aquaculture wastewater should be treated appropriately for reuse in different applications or safely released into the environment, promoting a sustainable industry and a circular economy. The current review provides insight into aquaculture wastewater generation, constituents, and treatment through various technologies. This study’s treatment technologies could be classified as physical, chemical, and biological. SWOT analysis was conducted on each technology to provide an in-depth understanding of the advantages and drawbacks. Suggestions were also stated to shed light on the importance of a sustainable aquaculture industry and the means to transition toward a circular economy. Graphical abstract

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Section: The Use Of Microalgaementioning

confidence: 99%

Aquaculture from inland fish cultivation to wastewater treatment: a review

Kashem,

Das,

Hawari

et al. 2023

Rev Environ Sci Biotechnol

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“…Thus, it is necessary to develop P alternative resources. In contrast to the limited terrestrial phosphorus resource, eutrophication of water has been a common issue worldwide (Gorzelnik et al 2023). According to the 2021 China Ecological Environment Status Bulletin, the proportion of eutrophic lakes and reservoirs in China was up to 27.3%.…”

Section: Introductionmentioning

confidence: 99%

Efficient reclamation of phosphorus from wetland plant via CaCl2/NaOH-mediated hydrothermal carbonization: insights from the evolution of phosphorus

Wang,

Yu,

Wang

et al. 2024

Carbon Res.

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Hydrothermal carbonization (HTC) of wetland plant could achieve the recovery of phosphorus (P) via the production of P-enriched hydrochar to alleviate the crisis of phosphate resources, while the migration and transformation of P should be determined. In this study, Canna indica was derived into hydrochar through HTC at different temperatures (200°C-260°C) and liquid mediums (H2O, CaCl2, and NaOH). The P forms were systematically characterized using P K-edge X-ray absorption near edge structure (XANES), 31P liquid nuclear magnetic resonance (NMR), and sequential extraction. The total P content in hydrochar was up to 23 mg g−1 with mainly inorganic P (> 97.8%), and the recovery rate was almost 100% during NaOH-mediated HTC. The P species, monoester-P and soluble orthophosphate (ortho-P), in biomass were transformed to more stable ortho-P in hydrochars, which was highly dependent on temperature and liquid medium. With increasing temperature, Al/Mg-P was gradually replaced by Ca/Fe-P. The CaCl2 solution facilitated the transformation of Ca(H2PO4)2 into CaHPO4 by elevating the Ca/P ratio. While for the NaOH-mediated HTC, the CaHPO4 and Ca(H2PO4)2 were transformed to hydroxyapatite (74.3%-81.5%), and the proportion of MgHPO4 elevated with increasing temperature. The diffusive gradients in thin films (DGT) results implied that the addition of hydrochar greatly elevated the soil available P content, which was further promoted by high temperature and NaOH medium. These results indicate that the species and availability of P in hydrochar could be adjusted through varying liquid medium and reaction temperature, which provide guidance for the target design of P-enriched hydrochar and P reclamation. Graphical Abstract

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“…If the remaining species increase after the removal treatment, it suggests that the removed species may exert a strong inhibitory effect on other species. Moreover, while manipulating species compositions and abundances in artificially assembled ecosystems can help us understand the ecological consequences of species and diversity losses, the assembly process of these communities is inherently characterized by randomness, and their relevance to real ecosystems continues to be intensely debated [14,15]. By contrast, removal experiments are often conducted in naturally assembled communities characterized by non-random species composition and relative abundance, rendering them more valuable for comprehending the community and ecosystem impacts of the removed species [9,16,17].…”

Section: Introductionmentioning

confidence: 99%

Short-Term Responses of Alpine Vegetation to the Removal of Dominant versus Sparse Species

Wang,

2024

Plants

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The mass ratio hypothesis posits that ecosystem functions are predominantly influenced by the dominant species. However, it remains unclear whether a species must be abundant to exert functional dominance. We conducted a removal experiment in an alpine grassland near Pudacuo National Park, Yunnan, China, to assess the community and ecosystem impacts of the removed species. We implemented four treatments as follows: exclusive removal of the most abundant species (Blysmus sinocompressus), exclusive removal of a sparse species with high individual biomass (Primula secundiflora), simultaneous removal of both species, and a control with no removals. Results showed that removing B. sinocompressus significantly reduced biomass production, supporting the mass ratio hypothesis, while removal of P. secundiflora had negligible effects. B. sinocompressus removal positively impacted community metrics like coverage, species evenness, and the Shannon diversity index, but not species richness, likely due to its spatial dominance. Conversely, P. secundiflora removal had minimal community impact, probably due to its limited influence on nearby species. This study underscores the proportionate roles of the dominant species in alpine grasslands, emphasizing that their community and ecosystem impacts are proportional to their abundance.

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Daphnia magna as biological harvesters for green microalgae grown on recirculated aquaculture system effluents

Cited by 13 publications

References 58 publications

Aquaculture from inland fish cultivation to wastewater treatment: a review

Aquaculture from inland fish cultivation to wastewater treatment: a review

Efficient reclamation of phosphorus from wetland plant via CaCl2/NaOH-mediated hydrothermal carbonization: insights from the evolution of phosphorus

Short-Term Responses of Alpine Vegetation to the Removal of Dominant versus Sparse Species

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