An integrated approach for phycoremediation of municipal wastewater and production of sustainable transportation fuel using oleaginous Chlorella sp.

Katiyar, Richa; Gurjar, Bhola R.; Kumar, Amit; Bharti, Randhir K.

doi:10.1016/j.jwpe.2021.102183

Cited by 26 publications

(11 citation statements)

References 55 publications

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“…In this study, TN decreased at the end of the incubation period (14th day) in the 50% UW and 100% UW treatments, obtaining a removal efficiency between 55% and 24.6%. Similar percentages were reported by Katiyar et al ( 2021 ), with TN removal rates (12 days) for C. minutissima and C. sorokiniana as 28.46% and 40% respectively. An opposite tendency was observed by Lin et al ( 2007 ), who reported that the relative NH 4 + removal rate in lower leachate concentrations (10% and 30%) was higher than that in higher concentrations (50%, 80%.…”

Section: Discussionsupporting

confidence: 89%

“…4 ). Katiyar et al ( 2021 ) reported a higher total organic Carbon removal efficiency by C. minutissima and C. sorokiniana (95% and 98%, respectively) in wastewater collected from India (500 ml, for 12 days), compared to that recorded in this study.…”

Section: Discussioncontrasting

confidence: 58%

“…1 ). According to Katiyar et al ( 2021 ) Chlorella minutissima and Chlorella sorokiniana showed higher growth rate, lipid content, and biomass productivity, when cultured in wastewater than in control. Similar results were reported by Singh et al ( 2017 ), although these authors recorded a higher growth rate and biomass production, and shorter doubling time, using Parachlorella kessleri -I in 100% municipal wastewater concentration.…”

Section: Discussionmentioning

confidence: 99%

“…Several species of microalgae have been investigated for their ability to synthesize and store bioproducts with pharmacological and biological properties, as well as metabolites used for biofuel production (Khan et al 2018 ). Different species of the genus Chlorella have been described as possible sources for biodiesel production according to their oil properties (Sathish, 2020 ; Katiyar et al 2021 ).…”

Section: Introductionmentioning

confidence: 99%

“…Chlorophyta species are a good candidate for the remediation of effluent coming from urban and rural areas (Katiyar et al 2021 ; Kumari et al 2021 ). Among these, Chlorella fusca is a species with high productivity in cultures at different scales (Jerez et al 2014 , 2016 ).…”

Section: Introductionmentioning

confidence: 99%

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Potential of the microalgae Chlorella fusca (Trebouxiophyceae, Chlorophyta) for biomass production and urban wastewater phycoremediation

et al. 2022

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The present work focuses on: (1) the evaluation of the potential of Chlorella fusca to grow and synthesize metabolites of biotechnological interest, after being exposed for fourteen days to urban wastewater (UW) from Malaga city (UW concentrations: 25%, 50%, 75%, and 100%); (2) the study of the capacity of C. fusca to bioremediate UW in photobioreactors at laboratory scale; and (3) the evaluation of the effect of UW on the physiological status of C. fusca, as photosynthetic capacity by using in vivo Chl a fluorescence related to photosystem II and the production of photosynthetic pigments. C. fusca cell density increased in treatments with 50% UW concentration, followed by the treatment with 100% UW, 75% UW, the control, and finally 25% UW. Protein content increased to 50.5% in 75% UW concentration. Stress induced to microalgal cultures favored the increase of lipid production, reaching a maximum of 16.7% in 100% UW concentration. The biological oxygen demand (BOD5) analysis indicated a 75% decrease in 100% UW concentration. Dissolved organic carbon (DOC) levels decreased by 41% and 40% in 50% UW and 100% UW concentration, and total nitrogen (TN) decreased by 55% in 50% UW concentration. The physiological status showed the stressful effect caused by the presence of UW on photosynthetic activity, with increasing impact as UW concentration grew. In the framework of circular economy, we seek to deepen this study to use the biomass of C. fusca to obtain metabolites of interest for biofuel production and other biotechnological areas. Graphical Abstract

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Section: Discussionsupporting

confidence: 89%

Section: Discussioncontrasting

confidence: 58%