Anaerobic treatment of rice winery wastewater in an upflow filter packed with steel slag under different hydraulic loading conditions

Jo, Yeadam; Kim, Jaai; Hwang, Seokhwan; Lee, Changsoo

doi:10.1016/j.biortech.2015.06.046

Cited by 34 publications

(16 citation statements)

References 34 publications

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“…4, Leach Bed). The occurrence of Methanosaeta in biofilms has been reported previously [53, 54]. This result highlights the need for a separate analysis of leach-bed samples and associated biofilms.…”

Section: Resultssupporting

confidence: 76%

From grass to gas: microbiome dynamics of grass biomass acidification under mesophilic and thermophilic temperatures

Abendroth

Simeonov²,

Peretó

et al. 2017

Biotechnol Biofuels

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BackgroundSeparating acidification and methanogenic steps in anaerobic digestion processes can help to optimize the process and contribute to producing valuable sub-products such as methane, hydrogen and organic acids. However, the full potential of this technology has not been fully explored yet. To assess the underlying fermentation process in more detail, a combination of high-throughput sequencing and proteomics on the acidification step of plant material (grass) at both mesophilic and thermophilic temperatures (37 and 55 °C, respectively) was applied for the first time.ResultsHigh-strength liquor from acidified grass biomass exhibited a low biodiversity, which differed greatly depending on temperature. It was dominated by Bacteroidetes and Firmicutes at 37 °C, and by Firmicutes and Proteobacteria at 55 °C. At the methane stage, Methanosaeta, Methanomicrobium and Methanosarcina proved to be highly sensitive to environmental changes as their abundance in the seed sludges dropped dramatically after transferring the seed sludges from the respective reactors into the experimental setup. Further, an increase in Actinobacteria coincided with reduced biogas production at the end of the experiment. Over 1700 proteins were quantified from the first cycle of acidification samples using label-free quantitative proteome analysis and searching protein databases. The most abundant proteins included an almost complete set of glycolytic enzymes indicating that the microbial population is basically engaged in the degradation and catabolism of sugars. Differences in protein abundances clearly separated samples into two clusters corresponding to culture temperature. More differentially expressed proteins were found under mesophilic (120) than thermophilic (5) conditions.ConclusionOur results are the first multi-omics characterisation of a two-stage biogas production system with separated acidification and suggest that screening approaches targeting specific taxa such as Methanosaeta, Methanomicrobium and Methanosarcina could be useful diagnostic tools as indicators of environmental changes such as temperature or oxidative stress or, as in the case of Actinobacteria, they could be used as a proxy of the gas production potential of anaerobic digesters. Metaproteome analyses only detected significant expression differences in mesophilic samples, whereas thermophilic samples showed more stable protein composition with an abundance of chaperones suggesting a role in protein stability under thermal stress.Electronic supplementary materialThe online version of this article (doi:10.1186/s13068-017-0859-0) contains supplementary material, which is available to authorized users.

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Section: Resultssupporting

confidence: 76%

From grass to gas: microbiome dynamics of grass biomass acidification under mesophilic and thermophilic temperatures

Abendroth

Simeonov²,

Peretó

et al. 2017

Biotechnol Biofuels

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“…The genus Smithella, which could degrade propionate to acetate [42,59], was dominant in start-up (3.13%) and winter (3.5%), and this was probably one of the reasons of acetate accumulation. The genus Acinetobacter was observed in autumn and winter, and was probably involved in the oxidation of organic matter or sulfides [13,60]. In order to better evaluate the structures of bacterial communities, the top 10 dominant genera in different periods of the system are presented in Figure 10.…”

Section: Shifts In Microbial Community Structures With Seasonal Tempementioning

confidence: 99%

“…Despite the effective chemical oxygen demand (COD) removal by these anaerobic biotechnologies, some challenges still exist, such as complex three-phase separator and long solids' retention time of UASB, membrane fouling and high energy costs of AnMBR, and high land footprint of ABR. Compared to these high-rate anaerobic reactors, the anaerobic filters (AFs) have drawn attention because of the following advantages [13][14][15]: (1) simple design configuration with low capital and operating costs, (2) excellent capability of high biomass retention with carriers, (3) stable operation, (4) greater tolerance to hydraulic loading rate and organic loading rate, and (5) low footprint. The potential of using AFs for treating wastewater have been well developed not only for industrial wastewater, but also for domestic wastewater [5,[16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Effect of Seasonal Temperature on the Performance and on the Microbial Community of a Novel AWFR for Decentralized Domestic Wastewater Pretreatment

Lü

2017

Applied Sciences

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Due to environmental burden and human health risks in developing countries, the treatment of decentralized domestic wastewater has been a matter of great concern in recent years. A novel pilot-scale three-stage anaerobic wool-felt filter reactor (AWFR) was designed to treat real decentralized domestic wastewater at seasonal temperature variations of 8 to 35 • C for 364 days. The results showed that the average chemical oxygen demand (COD) removal efficiencies of AWFR in summer and winter were 76 ± 7.2% and 52 ± 5.9% at one day and three days Hydraulic Retention Time (HRT), respectively. COD mass balance analysis demonstrated that even though COD removal was lower in winter, approximately 43.5% of influent COD was still converted to methane. High-throughput MiSeq sequencing analyses indicated that Methanosaeta, Methanobacterium, and Methanolinea were the predominant methanogens, whereas the genus Bacillus probably played important roles in fermentation processes throughout the whole operation period. The performance and microbial community composition study suggested the application potential of the AWFR system for the pretreatment of decentralized domestic wastewater.

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“…El sistema en estudio se mantuvo en el rango mesofílico, la temperatura se encontró entre 26,6 y 31,5°C, la cual está dentro del rango óptimo (25 y 35°C) que se establece para esta condición [21,22]. El comportamiento de la DQO T , DQO S y DBO [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] , en el afluente y efluente del FB, para los TRH estudiados se puede evidenciar en las Figuras 5, 6 y 7. Respecto a la DQO, en el TRH de 12,85h se encontraron remociones para la DQO T y DQO S de 19 y 41%, respectivamente.…”

Section: Arranque Del Sistema De Fbunclassified

“…El MS más común es piedra, pero se pueden utilizar plástico, elementos cerámicos, cilindros de plástico tubulares, elementos de madera como trozos de troncos, cilindros y entre los no comunes, el bambú [10]. Recientemente se emplean como MS restos de acero [11], telares de poliéster no tejido [12], conchas de coco [13] y conchas de ostras [14], reportando que las conchas marinas son MS rentables y alcanzan reducciones satisfactorias de materia orgánica en el tratamiento de AR. Actualmente se mantiene la búsqueda de alternativas para el MS, responsable de la mayor parte de los costos, volumen y perfeccionamiento de detalles constructivos de los FB, incluyendo el sentido del flujo y la facilidad de remoción del lodo en exceso.…”

Section: Introductionunclassified

Evaluación de un filtro biológico como unidad de post-tratamiento de aguas residuales utilizando conchas marinas como material de soporte

Galindo

Toncel

Rincón

2016

rev.ion

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Anaerobic treatment of rice winery wastewater in an upflow filter packed with steel slag under different hydraulic loading conditions

Cited by 34 publications

References 34 publications

From grass to gas: microbiome dynamics of grass biomass acidification under mesophilic and thermophilic temperatures

From grass to gas: microbiome dynamics of grass biomass acidification under mesophilic and thermophilic temperatures

Effect of Seasonal Temperature on the Performance and on the Microbial Community of a Novel AWFR for Decentralized Domestic Wastewater Pretreatment

Evaluación de un filtro biológico como unidad de post-tratamiento de aguas residuales utilizando conchas marinas como material de soporte

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