Soil application of microalgae for nitrogen recovery: A life-cycle approach

Souza, Mauro Henrique Batalha de; Calijuri, Maria Lúcia; Assemany, Paula Peixoto; Castro, Jackeline de Siqueira; Oliveira, Anna Carolina Martins de

doi:10.1016/j.jclepro.2018.11.097

Cited by 40 publications

(18 citation statements)

References 28 publications

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“…Another 12 of 63 studies benchmarked Nr recovery vs. Nr synthesis. In these studies, a clear distinction between recovered Nr and synthesized Nr is made, instead of using the system expansion approach (de Souza et al, 2019;Dube et al, 2016). In total, 27 of 63 studies investigated Nr recovery vs. Nr removal (10) or Nr recovery vs. Nr removal + Nr synthesis (17 -of which 11 studies used the system expansion approach see SM section 6.1).…”

Section: Benchmarking Approachesmentioning

confidence: 99%

Environmental and economic sustainability of the nitrogen recovery paradigm: Evidence from a structured literature review

Spiller

Moretti

Paepe

et al. 2022

Resources, Conservation and Recycling

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Section: Benchmarking Approachesmentioning

confidence: 99%

Environmental and economic sustainability of the nitrogen recovery paradigm: Evidence from a structured literature review

Spiller

Moretti

Paepe

et al. 2022

Resources, Conservation and Recycling

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“…However, challenges remain in the expansion of microalga-based technologies. For example, a life cycle assessment highlighted the detrimental impact of electricity consumption required for microalgal cultivation ( Diniz et al., 2017 ; de Souza et al., 2019 ). In addition, the application of a microalga-based fertilizer can stimulate the emission of greenhouse gases, such as N 2 O and CO 2 , from soils ( Suleiman et al., 2020 ).…”

Section: Conclusion and Prospectsmentioning

confidence: 99%

Physiology of microalgae and their application to sustainable agriculture: A mini-review

2022

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Concern that depletion of fertilizer feedstocks, which are a finite mineral resource, threatens agricultural sustainability has driven the exploration of sustainable methods of soil fertilization. Given that microalgae, which are unicellular photosynthetic organisms, can take up nutrients efficiently from water systems, their application in a biological wastewater purification system followed by the use of their biomass as a fertilizer alternative has attracted attention. Such applications of microalgae would contribute to the accelerated recycling of nutrients from wastewater to farmland. Many previous reports have provided information on the physiological characteristics of microalgae that support their utility. In this review, we focus on recent achievements of studies on microalgal physiology and relevant applications and outline the prospects for the contribution of microalgae to the establishment of sustainable agricultural practices.

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“…However, other studies point out that the production of microalgal biomass demands technological improvements in order to be sustainable due to highenergy consumption during the process. Castro et al (2020) and Souza et al (2019) demonstrated, using life cycle analysis, that microalgaebased biofertilizer can result in more environmental damage, such as climate change, compared to chemical fertilizers. The reason is high electricity consumption for low microalgae productivity.…”

Section: Area Of Expertise Of Microalgae Patent Applicationsmentioning

confidence: 99%

What do patents tell us about microalgae in agriculture?

et al. 2021

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Microalgae have been used widely as a biological source for several industries, such as biofuel, pharmaceutical and food. Recently, the agricultural industry has also began using microalgae as an alternative source for sustainable products to replace agrochemicals. Due to the lack of scientific articles in this research area, the objective of this study was to search for applications of microalgae and to characterize its use in agriculture using the patent documents available in three patent databases, World Intellectual Property Organization (WIPO), European Patent Office (EPO) and Brazilian Institute of Industrial Property (INPI). The search was carried out using the keyword “microalgae” and applying the filter for International Patent Classification (IPC) code “A01N” which corresponds to patents related to agriculture and cultivation of microalgae. Our patent database search returned 669 documents and 132 patents were selected for the study based on their abstracts. The first patent was registered in 1982 and described the use of microalgae Chlorella extract as a plant growth promoter. After that, no patent was registered for 15 years. From 2005 to 2014, only seven patents were found. However, the scenario changed from 2015 when the number of patents increased mainly in the United States, China and Europe. The patent analysis showed several applications for microalgae in the agricultural sector, such as plant growth promotion, biofertilization, plant disease control, weed management, and post-harvest quality. This review confirmed the increasing interest in microalgae-derived products in agriculture and the value of using patent documents to assess innovative areas.

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Soil application of microalgae for nitrogen recovery: A life-cycle approach

Cited by 40 publications

References 28 publications

Environmental and economic sustainability of the nitrogen recovery paradigm: Evidence from a structured literature review

Environmental and economic sustainability of the nitrogen recovery paradigm: Evidence from a structured literature review

Physiology of microalgae and their application to sustainable agriculture: A mini-review

What do patents tell us about microalgae in agriculture?

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