Dairy Wastewaters for Algae Cultivation, Polyhydroxyalkanote Reactor Effluent Versus Anaerobic Digester Effluent

Passero, Maxine; Cragin, Ben; Coats, Erik R.; McDonald, Armando G.; Feris, Kevin P.

doi:10.1007/s12155-015-9619-9

Cited by 22 publications

(20 citation statements)

References 43 publications

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“…The laboratory produced algae contained 2-4% of lipids, 31-48% protein, and 37-49% carbohydrate. These values are consistent with the literature [3,11].…”

Section: Algae Compositionsupporting

confidence: 94%

Hydrothermal liquefaction of laboratory cultivated and commercial algal biomass into crude bio‐oil

Liang

Wei

Passero

et al. 2017

Env Prog and Sustain Energy

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This study investigated the production of crude bio‐oils from three laboratory cultivated and two commercial grade algal biomass sources via hydrothermal liquefaction (HTL) process. Results demonstrated the crude bio‐oils generated from laboratory cultivated algae fed 5% anaerobic digestion effluent as sole nutrient source have similar thermochemical characteristics as comparison with that of derived from commercial algae. The HTL conditions were optimized (300°C for 20 min) and the generated bio‐oils were characterized by gas chromatography mass spectrometry, Fourier transform infrared spectroscopy, and electrospray ionization‐mass spectrometry analyses and simulated distillation by thermogravimetric analysis. The bio‐oil yields were between 28 and 41%. The bio‐oils were mainly comprised of fatty acids and alkanes. These bio‐oils can be further upgraded and refined into value added transportation fuels and chemicals. © 2017 American Institute of Chemical Engineers Environ Prog, 36: 781–787, 2017

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“…The laboratory produced algae contained 2-4% of lipids, 31-48% protein, and 37-49% carbohydrate. These values are consistent with the literature [3,11].…”

Section: Algae Compositionsupporting

confidence: 94%

Hydrothermal liquefaction of laboratory cultivated and commercial algal biomass into crude bio‐oil

Liang

Wei

Passero

et al. 2017

Env Prog and Sustain Energy

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“…Previous studies have shown that various forms of dairy, piggery, municipal, digested, and undigested wastes can be utilized for cultivating algal biomass and enhancing energy production (Chiu et al 2015 ; Ding et al 2014 ; Kesaano and Sims 2014 ; Mandal and Mallick 2011 ; Mulbry and Wilkie 2001 ; Mulbry et al 2008 ; Qin et al 2014 ; Wang et al 2010 ; Wilkie and Mulbry 2002 ; Anthony et al 2015 ; Hena et al 2015 ; Kothari et al 2013 ; Kumar et al 2010 ; Passero et al 2015 ; Zhou et al 2014 ; Johnson and Wen 2010 ). Many of previous studies (Mulbry and Wilkie 2001 ; Mulbry et al 2008 ; Qin et al 2014 ; Wang et al 2010 ; Wilkie and Mulbry 2002 ) used anaerobically digested dairy manure for assessing the growth of algae.…”

Section: Introductionmentioning

confidence: 99%

“…A study by Ding et al ( 2014 ) described cultivation of microalgae in dairy wastewater and reported that dilution of dairy wastewater increases the nitrogen and carbon removal by microalgae. Despite the considerable research interest in algal biomass production and exploring various concepts, substantial limitations in algal culturing exist related to exploiting the use of various waste sources for algal biomass production (Passero et al 2015 ; Gentili 2014 ; Vardon et al 2011 ).…”

Section: Introductionmentioning

confidence: 99%

“…In order to utilize various wastewaters for algae biomass production, pretreatment of the waste stream seems to be inevitable (Passero et al 2015 ; Passos et al 2014 ). Pretreatments such as hydrothermal (Passero et al 2015 ), microwave (Passos et al 2014 ), and UV irradiation (Kesaano and Sims 2014 ; Qin et al 2014 ) have been proposed for treating various waste streams, including dairy manure wastewater, to enhance algal biomass production; however, additional understanding is still needed to make pretreatment a viable solution for algae production at a large scale. Enhancing the understanding of how various forms of dairy wastewater, with and without pretreatments, can be utilized still requires further exploration.…”

Section: Introductionmentioning

confidence: 99%

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Chlorella vulgaris production enhancement with supplementation of synthetic medium in dairy manure wastewater

et al. 2016

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To identify innovative ways for better utilizing flushed dairy manure wastewater, we have assessed the effect of dairy manure and supplementation with synthetic medium on the growth of Chlorella vulgaris. A series of experiments were carried out to study the impacts of pretreatment of dairy wastewater and the benefits of supplementing dairy manure wastewater with synthetic medium on C. vulgaris growth increment and the ultrastructure (chloroplast, starch, lipid, and cell wall) of C. vulgaris cells. Results showed that the biomass production of C. vulgaris in dairy wastewater can be enhanced by pretreatment and using supplementation with synthetic media. A recipe combining pretreated dairy wastewater (40 %) and synthetic medium (60 %) exhibited an improved growth of C. vulgaris. The effects of dairy wastewater on the ultrastructure of C. vulgaris cells were distinct compared to that of cells grown in synthetic medium. The C. vulgaris growth in both synthetic medium and manure wastewater without supplementing synthetic medium was lower than the growth in dairy manure supplemented with synthetic medium. We anticipate that the results of this study will help in deriving an enhanced method of coupling nutrient-rich dairy manure wastewater for biofuel production.

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“…Numerous studies exist on the use of algae to treat various types of wastewaters including those from dairies, 7 piggeries, 8 wineries, 9 slaughterhouses, 10 and municipalities. 11,12 The fact that algae can grow successfully on such chemically diverse wastewaters indicates the potential scalability of algal wastewater treatment.…”

Section: Introductionmentioning

confidence: 99%

Algal–bacterial synergy in treatment of winery wastewater

et al. 2018

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There is significant potential for employing algae in tertiary wastewater treatment, however, little is known about the contribution of algae-bacteria synergy toward treatment performance. This study demonstrates potential synergy in the treatment of three winery wastewater samples. Two strains of green algae, Auxenochlorella protothecoides and Chlorella sorokiniana were tested and each removed > 90% of nitrogen, > 50% of phosphate, and 100% of acetic acid in the wastewater. Both algae strains grew significantly faster on wastewaters compared to growth on minimal media. Organic carbon in the wastewater apparently played a limited role in algal growth enhancement. When cultured on sterile-filtered wastewater, A. protothecoides increased soluble COD loadings in two of the three wastewaters and C. sorokiniana secreted an insoluble film. Culturing algae with the native wastewater microbial community negated the secretion of algal photosynthate, allowing for simultaneous reductions in COD and nutrient concentrations. Both algae species stimulated bacterial growth in a strain-specific way, suggesting unique responses to algal photosynthate. Cofactor auxotrophy for thiamine, cobalamin, and biotin is widespread among algae and these cofactors are typically obtained from bacteria. Sequencing the wastewater microbial community revealed bacteria capable of synthesizing all three cofactors while liquid chromatography with mass spectrometry (LCMS) and bio-assays revealed the presence of thiamine metabolites in the wastewaters. These cofactors likely increased algal growth rates, particularly for A. protothecoides, which cannot synthesize thiamine de-novo but can salvage it from degradation products. Collectively, these results demonstrate that bacteria and algae provided synergistic growth benefits, potentially contributing to higher levels of wastewater treatment than either organism type alone.

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Dairy Wastewaters for Algae Cultivation, Polyhydroxyalkanote Reactor Effluent Versus Anaerobic Digester Effluent

Cited by 22 publications

References 43 publications

Hydrothermal liquefaction of laboratory cultivated and commercial algal biomass into crude bio‐oil

Hydrothermal liquefaction of laboratory cultivated and commercial algal biomass into crude bio‐oil

Chlorella vulgaris production enhancement with supplementation of synthetic medium in dairy manure wastewater

Algal–bacterial synergy in treatment of winery wastewater

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