Extent of inhibition and utilization of volatile fatty acids as carbon sources for activated sludge microbial consortia dedicated for biodiesel production

Fortela, Dhan Lord; Hernández, Rafael; French, W. Todd; Zappi, Mark E.; Revellame, Emmanuel; Holmes, William E.; Mondala, Andro

doi:10.1016/j.renene.2016.04.068

Cited by 40 publications

(20 citation statements)

References 19 publications

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“…A large number of works have been published on the production of VFAs from biowaste resources, and most of the research from laboratory scale to pilot scale is focused on the yield and utilization of VFAs [50][51][52][53][54]. The main research objects are the types of biowaste resources, the operation factors affecting acidification, and the microorganisms involved in acid production by fermentation [50,[55][56][57][58], while less attention is paid to the composition of VFAs under different operating conditions [59].…”

Section: Oriented Acid Production Progressmentioning

confidence: 99%

Regulating the monomer of polyhydroxyalkanoate from mixed microbial culture: with particular emphasis on substrate composition: A review

Wei

Fang

2021

Environmental Engineering Research

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Polyhydroxyalkanoate (PHA), produced by mixed microbial cultures (MMCs), is a biodegradable biopolyester that alleviates the global plastic crisis in the nearest future. Even PHA has become a research hotspot, reviews on PHA composition determining thermodynamic and processing properties of PHA products are rare. The primary focus of the evaluation relies on the factors affecting the PHA monomer composition of MMC-PHA production. Besides, since the volatile fatty acids (VFAs) composition of the substrates strongly influences the PHA monomer composition, regulating the ratio of even-carbon to odd-carbon VFAs, PHA, vary properties could be obtained predictably. So oriented acid production process, the first stage process in three-stage MMC-PHA production that can regulate the VFAs composition, is also comprehensively introduced to help understand PHA monomer regulation.

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Section: Oriented Acid Production Progressmentioning

confidence: 99%

Regulating the monomer of polyhydroxyalkanoate from mixed microbial culture: with particular emphasis on substrate composition: A review

Wei

Fang

2021

Environmental Engineering Research

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“…biodiesel (Lord et al, 2016), bioplásticos (Fradinho et al, 2014), biohidrógeno (Bittencourt et al, 2018), electricidad generada por celdas microbianas (Begum et al, 2017;Zheng et al, 2017).…”

Section: Acido Grasos Volátiles (Agv)unclassified

Subproductos generados en el tratamiento y valorización de residuos sólidos urbanos dentro del concepto de biorrefinería: una revisión sistemática

Pineda

Reyes

Ramírez³

2021

Ingeniería y Región

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Esta revisión tiene como objetivo recopilar y resumir las investigaciones llevadas a cabo actualmente asociadas a la obtención de subproductos generados a partir de los residuos sólidos urbanos (RSU) empleando diversos procesos dentro del concepto de las biorrefinerías. Se realizó una búsqueda bibliográfica utilizando la base de datos DIALNET, SCIENCEDIRECT, GOOGLE SCHOLAR y ACADEMIC de los cuales se incluyeron artículos en inglés y español publicados entre julio del 2008 de junio del 2020. Se expulsaron los artículos de años anteriores, artículos que no informan subproductos, informes de los temas y capítulos de libros. Esta revisión mostro que a partir de los RSU se puede generar varios productos que tienen un gran valor tanto para la fabricación de productos como en el comercio, por lo tanto, se recomiendan más investigaciones al respecto. Dentro de los productos generados se mencionan el biogás, biometano, bioetanol, biohidrógeno, ácidos grasos volátiles, ácido láctico, Biofertilizantes y enmiendas agrícolas. Además, la mayoría de los estudios analizados sobre la producción de los subproductos se han realizado en modo discontinuo obteniendo un solo producto, por lo que no se enmarca dentro del concepto de biorrefinería. La idea es proporcionar nuevos conocimientos alternos para implementar el desarrollo y la implementación de una biorrefinería a gran escala usando como materia prima los residuos sólidos urbanos que están compuestos principalmente por proteínas, ácidos acético, lignina entre otros, que por medio de la unión de varios procesos bioquímicos es posible obtener biocombustibles, productos químicos y nutrientes tales como biogás, bioetanol, biohidrógeno, ácido láctico, ácidos grasos volátiles, biofertilizantes, logrando impactos positivos ambientales, ecológicos, sociales, económicos y técnicos.

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“…The SWW was prepared based on the formulation used in previous works on AS [38][39][40][41] (in 1-L deionized water): 0.5-g glucose, 37-mg ammonium sulfate (to make C/N of 30 with glucose), 0.15-g gelatin, 0.21-g starch, 0.07-g yeast extract, 0.01-g casamino acids, 1.5-g NaH 2 PO 4 , 1-g K 2 HPO 4 , and 5-mL trace minerals solution. A C/N of 30 is typical level in biological processes of WWTPs.…”

Section: Sww Preparationmentioning

confidence: 99%

Lipid accumulation capability of typical non‐acclimated activated sludge microbial consortia using methane gas as secondary carbon source

Fortela

Sharp

Revellame

et al. 2020

Engineering Reports

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This work experimentally demonstrates that wastewater activated sludge microbial consortia can utilize methane resulting in lipid content enhancement. Activated sludge was cultivated using a synthetic wastewater as culture media. After initial purging with air, analytical grade methane gas was added in the culture headspace. The cultures were cultivated in batch-mode for 120 hours at 25 • C in 500-mL bioreactors with 125-mL working liquid volume. Results indicate that methane gas was utilized by activated sludge microbial consortia under a similar pattern of microbial respiration as the control cultivated only with air. The activated sludge in the methane-purged bioreactors showed lipid enhancement (0.123 ± 0.037 mg lipid per mg biomass) and biomass growth (0.626 ± 0.163 mg biomass per mg glucose plus methane), which were higher than those in the control runs (0.009 ± 0.034 mg lipid per mg biomass and 0.225 ± 0.133 mg biomass per mg glucose).

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Extent of inhibition and utilization of volatile fatty acids as carbon sources for activated sludge microbial consortia dedicated for biodiesel production

Cited by 40 publications

References 19 publications

Regulating the monomer of polyhydroxyalkanoate from mixed microbial culture: with particular emphasis on substrate composition: A review

Regulating the monomer of polyhydroxyalkanoate from mixed microbial culture: with particular emphasis on substrate composition: A review

Subproductos generados en el tratamiento y valorización de residuos sólidos urbanos dentro del concepto de biorrefinería: una revisión sistemática

Lipid accumulation capability of typical non‐acclimated activated sludge microbial consortia using methane gas as secondary carbon source

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