Aerobic Biological Treatment of a Pharmaceutical Wastewater:

LaPara, Timothy M.; Nakatsu, Cindy H.; Pantea, Lisa M.; Alleman, James E.

doi:10.1016/s0043-1354(01)00178-6

Cited by 125 publications

(27 citation statements)

References 19 publications

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“…3), the maximum saturation of potential species was never achieved for phase 2 transitions from SBWW to acetate/sulfate and acetate alone. This is consistent with prior studies in bioreactors showing large increases in rare populations of bacterial species as the result of change or perturbation (Delbes et al, 2000(Delbes et al, , 2001Zumstein et al, 2000;Fernandez et al, 1999Fernandez et al, , 2000LaPara et al, 2002;Pender et al, 2004). Thus, the transient increase in diversity levels that was noted might be more reflective of the true complexity of bacterial populations within the structured biogranular communities.…”

Section: Discussionsupporting

confidence: 91%

“…The composition of the bacterial communities residing in biogranules depends on the waste being treated, but generally consists of two or three distinct trophic levels of organisms, such as fermentative organisms, fatty acid-oxidizing bacteria (syntrophs) and acetogenic bacteria (Schink, 1992a(Schink, , 1997Briones & Raskin, 2003). Past research has shown that UASB and other methanogenic reactors are extremely stable functionally (Fernandez et al, 1999;Zumstein et al, 2000;LaPara et al, 2002;Pender et al, 2004), but the underlying basis of the functional stability is not well understood.…”

Section: Introductionmentioning

confidence: 99%

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Microbial dynamics in upflow anaerobic sludge blanket (UASB) bioreactor granules in response to short-term changes in substrate feed

et al. 2010

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The upflow anaerobic sludge blanket (UASB) reactor is a microcosm for the methanogenic degradation of organic matter in anaerobic environments, and depends on the auto-formation of dense 3D biofilms of 1-3 mm in diameter, referred to as granular sludge (biogranules). Past research has shown that UASB and other methanogenic reactors are extremely stable functionally, but the underlying basis of the functional stability is not well understood. In this study, microbial dynamics in the communities residing in UASB biogranules were analysed to determine responses to short-term perturbations (change in reactor feed). The reactor was fed with simulated brewery wastewater (SBWW) for 1.5 months (phase 1), acetate/sulfate for 2 months (phase 2), acetate alone for 3 months (phase 3) and then a return to SBWW for 2 months (phase 4). Analysis of 16S rRNA, methanogen-associated mcrA and sulfate reducer-associated dsrAB gene-based-clone libraries showed a relatively simple community composed mainly of the methanogenic archaea (Methanobacterium and Methanosaeta), members of the green non-sulfur (Chloroflexi ) group of bacteria and Syntrophobacter, Spirochaeta, Acidobacteria and Cytophaga-related bacterial sequences. The mcrA clone libraries were dominated throughout by Methanobacterium-and Methanospirillum-related sequences. Although the reactor performance remained relatively stable throughout the experiment, community diversity levels generally decreased for all libraries in response to a change from SBWW to acetate alone feed. There was a large transitory increase noted in 16S diversity at the 2 month sampling on acetate alone, entirely related to an increase in bacterial diversity. Upon return to SBWW conditions in phase 4, all diversity measures returned to near phase 1 levels. Our results demonstrated that microbial communities, even highly structured ones such as in UASB biogranules, are very capable of responding to rapid and major changes in their environment.

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Section: Discussionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Microbial dynamics in upflow anaerobic sludge blanket (UASB) bioreactor granules in response to short-term changes in substrate feed

et al. 2010

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“…Dice index (Cs) of similarity was used to evaluate the similarity of bacterial communities of both bioreactors [25]. The equation used was Cs ¼ 2j/(aþb), where j was the number of common bands between samples A and B; a and b were the total number of bands in samples A and B, respectively.…”

Section: Microbial Community Diversity Analysesmentioning

confidence: 99%

Effect of electricity on microbial community of microbial fuel cell simultaneously treating sulfide and nitrate

Cai

Zheng

Xing

et al. 2015

Journal of Power Sources

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“…ND, Not described. (Hugenholtz et al, 1998;LaPara et al, 2000;Yamamoto et al, 1998). Yet relatively few thermophilic micro-organisms within the b-Proteobacteria have been isolated and described, and almost none of these has been an obligate chemolithoautotroph (Table 1).…”

Section: Comparison With Related Generamentioning

confidence: 99%

Thiobacter subterraneus gen. nov., sp. nov., an obligately chemolithoautotrophic, thermophilic, sulfur-oxidizing bacterium from a subsurface hot aquifer

Hirayama

Takai

Inagaki

et al. 2005

International Journal of Systematic and Evolutionary Microbiology

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A novel, thermophilic, obligately chemolithoautotrophic, sulfur/thiosulfate-oxidizing bacterium was isolated from subsurface geothermal aquifer water (temperature approximately 70 °C) in the Hishikari gold mine, Japan. Cells of the isolate, designated strain C55T, were motile, straight rods with a single polar flagellum. Growth was observed at temperatures between 35 and 62 °C (optimum 50–55 °C; 60 min doubling time) and pH between 5·2 and 7·7 (optimum pH 6·5–7·0). High growth rate of strain C55T was observed on either thiosulfate or elemental sulfur as a sole energy source, with molecular oxygen as the only electron acceptor. None of the organic compounds tested supported or stimulated growth of strain C55T. The G+C content of the genomic DNA was 66·9 mol%. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain C55T was affiliated to the β-Proteobacteria, but was distantly related to recognized genera. On the basis of its physiological and molecular properties, strain C55T (=JCM12421T=DSM 16629T=ATCC BAA-941T) is proposed as the type strain of Thiobacter subterraneus gen. nov., sp. nov.

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Aerobic Biological Treatment of a Pharmaceutical Wastewater:

Cited by 125 publications

References 19 publications

Microbial dynamics in upflow anaerobic sludge blanket (UASB) bioreactor granules in response to short-term changes in substrate feed

Microbial dynamics in upflow anaerobic sludge blanket (UASB) bioreactor granules in response to short-term changes in substrate feed

Effect of electricity on microbial community of microbial fuel cell simultaneously treating sulfide and nitrate

Thiobacter subterraneus gen. nov., sp. nov., an obligately chemolithoautotrophic, thermophilic, sulfur-oxidizing bacterium from a subsurface hot aquifer

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