Biomass production and nutrient assimilation by a novel microalga, Monoraphidium spp. SDEC-17, cultivated in a high-ammonia wastewater

Jiang, Liqun; Pei, Haiyan; Hu, Wenrong; Hou, Qingjie; Han, Fang; Nie, Changliang

doi:10.1016/j.enconman.2016.06.060

Cited by 44 publications

(5 citation statements)

References 35 publications

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“…Monoraphidium spp. SDEC-17, which can endure high-ammoniacal nitrogen conditions (>170 mg L −1 ), represents a promising candidate for algal biomass production and chemical energy recovery from complex wastewater (Jiang et al, 2016). However, besides high tolerance to ammonium nitrogen, both high nitrogen utilization efficiency and high growth rate are also deciding factors in algal bioremediation of ammonium nitrogen from wastewater.…”

Section: Discussionmentioning

confidence: 99%

Ammonium Nitrogen Tolerant Chlorella Strain Screening and Its Damaging Effects on Photosynthesis

et al. 2019

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Nitrogen is an essential nutrient element. Ammonium nitrogen, one of the most common nitrogen sources, is found in various habitats, especially wastewater. However, excessive amounts of ammonium nitrogen can be toxic to phytoplankton, higher plants, fish, and other animals, and microorganisms. In this study, we explored the tolerance of green algae to ammonium nitrogen using 10 Chlorella strains. High concentrations of ammonium nitrogen directly inhibited the growth of Chlorella, but the degree of inhibition varied by strain. With the EC50 of 1.6 and 0.4 g L−1, FACHB-1563 and FACHB-1216, respectively had the highest and lowest tolerance to ammonium nitrogen among all strains tested, suggesting that FACHB-1563 could potentially be used to remove excess ammonium nitrogen from wastewater in bioremediation efforts. Two strains with the highest and lowest tolerance to ammonium nitrogen were selected to further explore the inhibitory effect of ammonium nitrogen on Chlorella. Analysis of chlorophyll fluorescence, oxygen evolution, and photosynthesis proteins via immunoblot showed that photosystem II (PSII) had been damaged when exposed to high levels of ammonium nitrogen, with the oxygen-evolving complex as the primary site, and electron transport from QA− to QB was subsequently inhibited by this treatment. A working model of ammonium nitrogen competition between N assimilation and PSII damage is proposed to elucidate that the assimilation rate of ammonium nitrogen by algae strains determines the tolerance of cells to ammonium nitrogen toxicity.

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Section: Discussionmentioning

confidence: 99%

Ammonium Nitrogen Tolerant Chlorella Strain Screening and Its Damaging Effects on Photosynthesis

et al. 2019

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“…Lipids were always the least abundant macronutrient in the collected biomass which is probably related with the fact that wastewater is rich in nitrogen, therefore leading to a biomass richer in protein. Jiang et al (2016) also observed an increase in the protein levels when the microalga Monoraphidium spp. SDEC-1 was cultivated in ammonia-rich wastewater (from 35% in BG-11 to 44% in wastewater).…”

Section: Biomass Chemical Characteristics and Possible Applicationmentioning

confidence: 76%

Tertiary Urban Wastewater Treatment with Microalgae Natural Consortia in Novel Pilot Photobioreactors

Morais¹,

Marques²,

Cerqueira³

et al. 2022

SSRN Journal

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“…For simulating algae growth, the Verhulst logistic kinetic model was used as the previous report did [32] and the equation was shown below:where X is the concentration of dry algal biomass (g L −1 ); X max is the maximum algae biomass concentration (g L −1 ); m is a constant in the logistic model indicating the relative position from the origin; μ is the specific growth rate (d −1 ); and t represents the culture time ( d ).…”

Section: Methodsmentioning

confidence: 99%

Toward facilitating microalgae cope with effluent from anaerobic digestion of kitchen waste: the art of agricultural phytohormones

Pei

Jiang

Hou

et al. 2017

Biotechnol Biofuels

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BackgroundAlthough numerous studies have used wastewater as substitutes to cultivate microalgae, most of them obtained weaker algal viability than standard media. Some studies demonstrated a promotion of phytohormones on algal growth in standard media. For exploiting a strategy to improve algal biomass accumulation in effluent from anaerobic digestion of kitchen waste (ADE-KW), the agricultural phytohormones gibberellin, indole-3-acetic acid, and brassinolide (GIB) were applied to Chlorella SDEC-11 and Scenedesmus SDEC-13 at different stages of algal growth. Previous studies have demonstrated a promotion of phytohormones on algal growth in standard media, but attempts have been scarce, focusing on wastewater cultivation system. In addition, the effects of wastewater on algal morphology and ultrastructure have not been revealed so far, much less on the mechanism of the role of phytohormones on algae.ResultsADE-KW disrupted the membranes of nuclear and chloroplast in ultrastructural cell of SDEC-11, and reduced the room between chloroplast and cell membrane and increased the starch size of SDEC-13. This reduced algal growth and biocompound accumulation, but SDEC-13 had greater adaptation to ADE-KW than SDEC-11. Moreover, inoculation with an algal seed pretreated with GIB aided the adaptability and viability of algae in ADE-KW, which for SDEC-13 was even promoted to the level in BG11. GIB mitigated the inhibition of ADE-KW on algal cell division and photosynthetic pigments and apparatus, and increased lipid droplets, which might result from the change in the synthesis and the fate of nicotinamide adenine dinucleotide phosphate. GIB addition significantly promoted lipid productivity of the two algal species, following 13 mg L−1 d−1 of SDEC-11 in B+ADE-KW and especially 13 mg L−1 d−1 of SDEC-13 achieved during the priming of algal seed with the hormones, which is 139% higher than 5 mg L−1 d−1 achieved in ADE-KW control.ConclusionsAgricultural phytohormones could be applied as a strategy for promoting biomass and biocompound accumulation of algae in ADE-KW, in which pretreatment of the algal inoculum with hormones is a unique way to help algae survive under stress. Considering our results and treatment technology for kitchen waste, a more feasible and economic plant can be built incorporating anaerobic digestion, algae cultivation with ADE-KW assisted with phytohormones, and biodiesel production.Electronic supplementary materialThe online version of this article (doi:10.1186/s13068-017-0759-3) contains supplementary material, which is available to authorized users.

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Biomass production and nutrient assimilation by a novel microalga, Monoraphidium spp. SDEC-17, cultivated in a high-ammonia wastewater

Cited by 44 publications

References 35 publications

Ammonium Nitrogen Tolerant Chlorella Strain Screening and Its Damaging Effects on Photosynthesis

Ammonium Nitrogen Tolerant Chlorella Strain Screening and Its Damaging Effects on Photosynthesis

Tertiary Urban Wastewater Treatment with Microalgae Natural Consortia in Novel Pilot Photobioreactors

Toward facilitating microalgae cope with effluent from anaerobic digestion of kitchen waste: the art of agricultural phytohormones

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