Reuse of effluent water from a municipal wastewater treatment plant in microalgae cultivation for biofuel production

Cho, Sunja; Luong, Thanh Thao; Lee, Dukhaeng; Oh, You-Kwan; Lee, Tae‐Ho

doi:10.1016/j.biortech.2011.03.037

Cited by 273 publications

(124 citation statements)

References 30 publications

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“…Therefore, higher nutrient removal ratios were expected as the secondary effect when the process is operated under a longer HRT. The removal ratio achieved here was comparable to those reported in previous studies [13,14]. Under the longer HRT of 24 hours, over 95% of the phosphorus was removed.…”

Section: Effects Of Hrtsupporting

confidence: 89%

Optimization of Hydraulic Retention Time and Biomass Concentration in Microalgae Biomass Production from Treated Sewage with a Membrane Photobioreactor

Honda

Teraoka

Noguchi

et al. 2017

J. of Wat. & Envir. Tech.

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Treated sewage is a promising source of nitrogen and phosphorus in microalgae biomass production for carbon-neutral biofuel and chemical products. In this study, Chlorella vulgaris was continuously cultivated in membrane photobioreactors (MPBRs) under short hydraulic retention times (HRTs) and with different numbers of submerged membrane modules to investigate potential microalgae productivity when treated sewage was used as a nutrient source. Microalgae biomass concentrations were independent of HRT in MPBRs with one membrane module owing to microalgae biomass deposition on the membrane. Installation of an additional submerged membrane module effectively reduced deposition on the submerged membrane, resulting in increased microalgae biomass concentration and volumetric productivity. Growth kinetics suggested that HRT is the essential parameter influencing the volumetric productivity of microalgae under nutrient-limited conditions, and that optimization of the biomass concentration, which depends on the surface/volume ratio of the photobioreactor and initial light intensity, is critical to maximization of the volumetric productivity under light-limited conditions.

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Section: Effects Of Hrtsupporting

confidence: 89%

Optimization of Hydraulic Retention Time and Biomass Concentration in Microalgae Biomass Production from Treated Sewage with a Membrane Photobioreactor

Honda

Teraoka

Noguchi

et al. 2017

J. of Wat. & Envir. Tech.

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“…Li et al (2011b) recorded that Chlorella sp. removed 93.9, 89.1 and 80.9 % of NH 4 -N, total N and P, respectively, and produced 0.92 g L -1 of biomass per day on raw Cho et al (2011) studied the effect of different pre-treatments-filtration (0.45-lmpore-size filter) and UV treatments (over 1,620 mJ cm -2 ) on the nutrient removal ability of Chlorella sp. They reported that Chlorella removed 85, 92 and 74 % of total N and 84, 86 and 84 % of total P, respectively, from secondary treated municipal wastewater filtered with 0.2-lm membrane, 1-lm membrane or UV-B dose, respectively.…”

Section: Use Of Municipal Wastewatermentioning

confidence: 99%

“…Chlorella sp. removed 24.8 % of COD in 9 days from secondary treated municipal wastewater filtered through 0.2-lm membrane (Cho et al 2011). Wang et al (2010b revealed that Chlorella sp.…”

Section: Heavy Metal Removal By Microalgae In Wastewatermentioning

confidence: 99%

Phycoremediation of wastewaters: a synergistic approach using microalgae for bioremediation and biomass generation

Renuka

Sood

Prasanna

et al. 2014

Int. J. Environ. Sci. Technol.

169

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Discharge of untreated domestic and industrial wastewater into aquatic bodies is posing a serious eutrophication threat, leading to a slow degradation of the water resources. A number of physical, chemical and biological methods have been developed for the treatment of wastewaters; among these, the use of microalgae is considered as a more eco-friendly and economical approaches. Microalgae are versatile organisms which perform multiple roles in the environment-bioremediation of wastewater, gleaning of excess nutrients and in turn, generate valuable biomass which finds applications in the food, biofuel and pharmaceutical industries. They are currently being utilized to reduce the high nutrient load (especially N and P) from wastewaters, which fulfill the growth requirements of microalgae, making it a suitable cultivation medium for biomass production. The present review represents a comprehensive compilation of reports on microalgal diversity of wastewaters, followed by a critical overview of their utilization, suitability and potential in bioremediation vis-a-vis biomass production. This review also emphasizes the superiority of polyalgal and consortial approaches in wastewater treatment, as compared to the use of unialgal inocula, besides providing useful pointers for future research needs in this area.

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“…Na Figura 1 a cinética de crescimento da C. vulgaris utilizando o efluente in natura não apresenta um crescimento consistente, pois o efluente de reator anaeróbio possui uma variedade de protozoários e bactérias que competem por luz e nutrientes e microrganismos que se alimentam de microalgas (CHO et al, 2011). Como mostrado, o aumento da concentração inicial de efluente não resultou melhoria nos valores de crescimento algal, demonstrando a necessidade de realizar tratamento para a remoção do material suspenso e microrganismos.…”

Section: Crescimento Da Microalga Em Diferentes Condições De Cultivounclassified

Cultivo de microalga Chlorella vulgaris em efluente doméstico para a produção de lipídeos

Trevisan¹,

Branco²,

Moro³

et al. 2015

Anais Do XX Congresso Brasileiro De Engenharia Química

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RESUMO -A utilização de microalgas para a produção de biodiesel pode ser aliada ao tratamento de efluentes doméstico, industrial e agrícola, com acúmulo significativo de lipídeos. Este trabalho teve como objetivo utilizar efluente de tratamento de esgoto doméstico, como fonte de nutrientes no cultivo de Chlorella vulgaris. Foi avaliado a remoção de material particulado suspenso e microrganismos presentes, bem como a diluição do efluente no inóculo. O uso de tratamento para a remoção de microrganismos e material particulado influenciou o crescimento da microalga. Os cultivos diluídos em partes iguais entre inóculo e efluente se diferenciaram na ausência e presença de tratamento com luz ultravioleta e filtração. Sem tratamento foi alcançado 0,42 g.L -1 , enquanto que a filtração elevou a produção para 0,85 g.L -1 e filtração seguida de exposição a luz ultravioleta levou a uma produção de 0,75 g.L -1 . Alcançando teores de lipídeos totais de 12,6, 21,3 e 24,6%, respectivamente. INTRODUÇÃODurante as ultimas décadas tem-se levantado questionamentos quanto ao real nível das atuais reservas de petróleo. Juntamente as questões que envolvem o volume de petróleo está a oscilação dos seus preços no mercado internacional e, como apontam Campbell e Laherrére (1998), os preços são resultados de reações emocionais e políticas. Um exemplo é o que ocorreu entre os anos de 1973 e 1979, período em que os preços do petróleo dispararam devido ao embargo Árabe. Campbell e Laherrére (1998) ainda apontam para um aumento ilusionista nas reservas, promovido por seus controladores, pois estes na maioria dos casos são governos que comandam as principais empresas petrolíferas, sendo muitas vezes utilizadas como braço politico ou geopolítico. A partir disto, tem-se estudado alternativas para substituir os combustíveis fósseis como principal fonte energética, com preferência para materiais que sejam provenientes de fontes renováveis. Assim, as matérias-primas que tem se destacado inicialmente são plantas oleaginosas, tais como pinhão manso (SALVIATO e ARROYO, 2012), canola, girassol, soja, palma, cambre e algodão para a produção de biodiesel e cana-de-açúcar para produção de etanol. No entanto, a utilização destas oleaginosas é limitada pelo baixo teor de lipídeos em sua biomassa, geralmente abaixo de 5% (CHISTI, 2008). Outro desafio no uso de plantas oleaginosas é a demanda que estas possuem por terras aráveis, nutrientes e recursos hídricos da produção de alimentos (CHISTI, 2007;BHATNAGAR et al., 2011).

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Reuse of effluent water from a municipal wastewater treatment plant in microalgae cultivation for biofuel production

Cited by 273 publications

References 30 publications

Optimization of Hydraulic Retention Time and Biomass Concentration in Microalgae Biomass Production from Treated Sewage with a Membrane Photobioreactor

Optimization of Hydraulic Retention Time and Biomass Concentration in Microalgae Biomass Production from Treated Sewage with a Membrane Photobioreactor

Phycoremediation of wastewaters: a synergistic approach using microalgae for bioremediation and biomass generation

Cultivo de microalga Chlorella vulgaris em efluente doméstico para a produção de lipídeos

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