Microalgae-mediated brewery wastewater treatment: effect of dilution rate on nutrient removal rates, biomass biochemical composition, and cell physiology

Marchão, Leonilde; Silva, Teresa Lopes da; Gouveia, Luísa; Reis, Alberto

doi:10.1007/s10811-017-1374-1

Cited by 45 publications

(15 citation statements)

References 34 publications

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“…Farooq et al (2013) also found that a TN removal efficiency of 90% using Chlorella vulgaris during the first stage of the two-stage photoautotrophic-photoheterotrophic cultivation system in brewery effluent. But TN removal of this study was higher than those reported in other studies of Choi (2016) and Marchão et al (2018), where a maximum removal of 83.74% and 76% was achieved in brewery effluent, respectively.…”

Section: Biomass Productioncontrasting

confidence: 87%

Nutrient removal and carbohydrate production potential of indigenous Scenedesmus sp. grown in anaerobically digested brewery wastewater

et al. 2020

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Background The combination of nutrient removal using microalgae from wastewater with carbohydrate production has been considered as a promising approach for sustainable wastewater treatment and production of valuable products such as biofuels. In Ethiopia, urbanization and industrial development are not in tandem with wastewater treatment system The objective of this study was to evaluate nutrient removal and carbohydrate production potential of the indigenous microalgae Scenedesmus sp. grown in anaerobically digested brewery wastewater. The indigenous Scenedesmus sp. was grown in an anaerobically digested brewery effluent in different seasons of the year. The biomass was converted into carbohydrate using microwave, autoclave, and oven as pretreatment, followed by optimization for acid concentrations and hydrolysis time. Result The overall removal efficiencies for the indigenous Scenedesmus sp. based wastewater treatment system were over 99%, 92%, 63%, 65% and 75% for NH4+-N, TN, PO43− -P, TP and COD, respectively. The concentrations of final effluent quality of these parameters except for phosphorus nutrient were below the permissible discharge limit for brewery effluent standard set by Ethiopian Environmental Protection Authority. With regard to carbohydrate production, microwave-assisted acid hydrolysis with HCl produced a higher total sugar than that of autoclave and oven pretreatments. Among acid concentrations, HCl with 3 N produced a higher total sugar, which is significantly different (P < 0.05) to the other acid concentrations. The highest total sugar (233.89 mg g−1) was obtained from microalgal biomass during the 20 min hydrolysis time with 3 N HCl and 5% (w/v) biomass at 1000 watts and 1200C. Conclusions This study showed that there is an opportunity for using the indigenous microalgae for sustainable wastewater treatment and for carbohydrate production that uses as bioethanol source in Ethiopia.

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Section: Biomass Productioncontrasting

confidence: 87%

Nutrient removal and carbohydrate production potential of indigenous Scenedesmus sp. grown in anaerobically digested brewery wastewater

et al. 2020

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“…However, the present results are in the range of phosphorus removal efficiencies presented by Ferreira et al . and Marchão et al ., 6–43%. This latter statement can also be applied to COD removal efficiencies when comparing with those last two studies (50–74%).…”

Section: Resultscontrasting

confidence: 47%

“…and Darpito et al ., who both used Chlorella sp., and by Ferreira et al . and Marchão et al ., who used S. obliquus in batch and continuous cultivations. Those studies achieved removal efficiencies above 80% for nitrogen.…”

Section: Resultsmentioning

confidence: 99%

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Scenedesmus obliquusmicroalga‐based biorefinery – from brewery effluent to bioactive compounds, biofuels and biofertilizers – aiming at a circular bioeconomy

Ferreira

Ribeiro

Ferreira

et al. 2019

Biofuels Bioprod Bioref

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100

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The circular bioeconomy concept relies on the exploitation of wastes as a feedstock of different biotechnological processes to obtain, as much as possible, a huge spectrum of biochemical components through a biorefinery platform. This work deals with the treatment of brewery effluent through the cultivation of Scenedesmus obliquus microalga and the use of the biomass in a complex biorefinery. The treatment proved efficient in the removal of nutrients (N, P and COD removals of 88, 30 and 71% respectively). Several compounds and products were obtained from the biomass, such as: (a) phenols (0.249-1.016 mg GAE mL −1 ) and flavonoids (0.05-0.167 mg CE mL −1 ) by subcritical water extraction (SWE) at 120 °C, the extraction efficiency being five times higher at 200 °C; (b) biohydrogen by dark fermentation (67.1 mL H 2 g VS −1 ); (c) bio-oil (64%), biochar (30%) and biogas (6%) by pyrolysis; and (d) enhanced capacity of germination/growth of wheat and barley seeds by S. obliquus culture and biomass (pellet, after centrifugation); better results were obtained with the biomass cultivated in brewery effluent (when compared with synthetic medium), and the biomass pellet was better than the whole culture; barley seeds 1170 A Ferreira et al.In the Field: Scenedesmus obliquus microalga-based biorefinery aiming at a circular bioeconomy treated with the pellet from the brewery effluent had the highest germination index (GI) of 85 compared with the control (tap water) GI of 35. The innovative study emphasis was on reducing microalgae production costs, providing environmental benefits in a biorefinery-based S. obliquus platform.

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“…foi significativamente maior do que o obtido com Chlorella sorokiniana (25%) cultivada em águas residuais semelhantes. De acordo com Marchão et al [22], o teor de proteína encontrado foi 50,09% para a microalga Scenedesmus obliquus cultivada a partir de água residual de cervejaria, utilizando fotobiorreatores de coluna de bolhas.…”

Section: Resultsunclassified

PRODUÇÃO DE Spirulina sp. (LEB18) COM ELEVADOS TEORES DE PROTEÍNA E FICOCIANINA, UTILIZANDO ÁGUA RESIDUAL DA AQUICULTURA

Silva¹,

Cardoso²,

Duarte³

et al. 2019

Blucher Engineering Proceedings

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Resumo: O objetivo foi produzir biomassa de Spirulina sp. (LEB 18) utilizando água residual da aquicultura como meio alternativo e avaliar a composição da biomassa. Os cultivos foram realizados em fotobiorreatores (1L) com 100% de água residual de aquicultura suplementada com T-25, T-50, T-75. O tratamento T-25 apresentou maiores valores de proteína (65,73%) e ficocianina (16,60 mg/mL). Assim, o tratamento com 25% representa uma alternativa eficiente, barata e sustentável para o setor de aquicultura, produzindo biomassa de baixo custo com características diferenciadas e alto valor agregado.

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Microalgae-mediated brewery wastewater treatment: effect of dilution rate on nutrient removal rates, biomass biochemical composition, and cell physiology

Cited by 45 publications

References 34 publications

Nutrient removal and carbohydrate production potential of indigenous Scenedesmus sp. grown in anaerobically digested brewery wastewater

Nutrient removal and carbohydrate production potential of indigenous Scenedesmus sp. grown in anaerobically digested brewery wastewater

Scenedesmus obliquusmicroalga‐based biorefinery – from brewery effluent to bioactive compounds, biofuels and biofertilizers – aiming at a circular bioeconomy

PRODUÇÃO DE Spirulina sp. (LEB18) COM ELEVADOS TEORES DE PROTEÍNA E FICOCIANINA, UTILIZANDO ÁGUA RESIDUAL DA AQUICULTURA

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