Microbial characterization and removal of anionic surfactant in an expanded granular sludge bed reactor

Delforno, Tiago Palladino; Okada, Dagoberto Yukio; Polizel, Juliana; Sakamoto, Isabel Kimiko; Varesche, Maria Bernadete Amâncio

doi:10.1016/j.biortech.2011.12.042

Cited by 57 publications

(42 citation statements)

References 20 publications

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“…The co-substrates (sucrose, starch and yeast extract) were removed at an efficiency of 53%. Using the sludge obtained from a full-scale UASB reactor treating the effluent from a poultry slaughterhouse as inoculum, Delforno et al (2012) operated an anaerobic expanded granular sludge bed for the removal of LAS; 3.9 g of LAS mass was applied, 0.32 g was adsorbed in the solid, 1.69 g accumulated in the effluent, and 48% LAS degradation was achieved. In a UASB reactor using the same sludge, Okada et al (2013) obtained a 76% LAS degradation efficiency with a reduction in co-substrates; however, the LAS mass applied was 0.5 g. Compared to other biodegradation studies, the ASBR used herein under denitrifying conditions exhibited high efficiency.…”

Section: Resultsmentioning

confidence: 99%

“…Wastewater with low concentrations of surfactants can inhibit the anaerobic digestion (Lee et al 2013). Although LAS degradation under anaerobic conditions has been questioned, some studies have reported considerable efficiency of LAS degradation in anaerobic conditions ( Sanz et al 2003;Lobner et al 2005;Delforno et al 2012, Okada et al 2013, with LAS influent concentrations ranging between 5 and 14 mg/L. The anaerobic sequencing batch reactor (ASBR) with suspended sludge was used for the degradation of 22 mg/L LAS with 53% efficiency in the absence of co-substrates (Duarte et al 2010).…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of the microbial diversity in sequencing batch reactor treating linear alkylbenzene sulfonate under denitrifying and mesophilic conditions using swine sludge as inoculum

Duarte

Oliveira

Okada

et al. 2015

Braz. arch. biol. technol.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evaluation of the microbial diversity in sequencing batch reactor treating linear alkylbenzene sulfonate under denitrifying and mesophilic conditions using swine sludge as inoculum

Duarte

Oliveira

Okada

et al. 2015

Braz. arch. biol. technol.

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“…The absence of effluent recirculation in stage I contributed to the greater difference in the LAS removal rate, around 20%, while in stage II this difference was around 10%. Namely, effluent recirculation increases mass transfer, which enhanced LAS removal in an expanded granular sludge bed (EGSB) and fluidized bed reactors (Delforno et al 2012;Oliveira et al, 2010). Moreover, the rate of biomass loss was 2 mg TS.d -1 in stage IV (with yeast extract), while this rate was 14 mg TS.d -1 in stages I and II.…”

Section: Uasb Reactormentioning

confidence: 99%

Influence of co-substrates in the anaerobic degradation of an anionic surfactant

Okada

Esteves

Delforno

et al. 2013

Braz. J. Chem. Eng.

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-The removal of linear alkylbenzene sulfonate (LAS) was evaluated in a UASB reactor using shortchain alcohols (ethanol and methanol) and complex co-substrate (yeast extract). Using only methanol and ethanol as co-substrates resulted in removal of LAS between 30 and 41%. At the end, addition of a complex substrate (yeast extract) increased the removal of LAS to 50%. During the assay, water supply aeration increased the volatile fatty acid of the effluent (70 mg HAc.L -1 ) and decreased the removal of LAS (from 40 to 30%). According to the fluorescence in situ hybridization (FISH) results, the amount of Archaea decreased due to water supply aeration (from 64 to 48%). Furthermore, addition of complex co-substrate increased the total anaerobic bacteria and methanogenic archaea content (three and four log units, respectively), which were estimated using the most probable number technique.

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“…Another example, linear alkylbenzene sulfonate (LAS) has historically been considered inaccessible to biodegradation under anaerobic condition [14]. However, there is growing evidence of the success of degradation of LAS in the presence of various electron donors recently [15]. Once degraded under anaerobic digestion, sulfur in these organic sulfur compounds will be readily released as sulfate and sulfide into water [16].…”

Section: Introductionmentioning

confidence: 99%

UASB treatment of chemical synthesis-based pharmaceutical wastewater containing rich organic sulfur compounds and sulfate and associated microbial characteristics

Niu

Zhang

et al. 2015

Chemical Engineering Journal

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h i g h l i g h t sSuccessful application of UASB in treatment of rich organic S-bearing wastewater. Sulfate in effluent was higher than influent at COD/SO 4 2À ratio of 8 and 5.Conversely, sulfate in influent was higher than effluent at COD/SO 4 2À ratio of 1.5.Archaea and bacterial community varied greatly with altered OLR. Some species can be responsible for S release from organic sulfur compounds.a r t i c l e i n f o a b s t r a c tThe feasibility of treating of chemical synthesis-based pharmaceutical wastewater containing rich organic sulfur compounds and sulfate using an upflow anaerobic sludge blanket (UASB) was investigated. The initial COD/SO 4 2À ratio of 8 in the wastewater varied from 5 to 1.5 after adding sulfate. Of interest that under the condition of COD/SO 4 2À at 8 and 5, despite the simultaneous generation of sulfide and hydrogen sulfide, the sulfate concentration in the effluent was higher than in the influent. This is due to the sulfur release in the form of sulfate during the degradation of these organic sulfur compounds in this reactor. Conversely, at COD/SO 4 2À of 1.5, influent sulfate was higher than effluent sulfate due to reduction of more sulfates in the reactor. At COD/SO 4 2À of 8, for practical application, the optimum OLR was found to be 8 kg COD/m 3 /d, where a nearly 70% COD reduction occurred with biogas containing 63% methane. In this stage, the distribution of the archaea and bacterial community varied greatly with altered OLR (accompanied with prolonged operation time). Some species, such as Lysinibacillus sphaericus, Clostridium cellulovorans were expected to be partly responsible for S release from some organic sulfur compounds in the reactor. By increasing the sulfate loading at a COD/SO 4 2À ratio up to 1.5 resulted in a light inhibition of methanogenesis due to the high sulfide concentration (1212 SO 4 2À -S mg/L) with no obvious suppression of sulfidogenesis.

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Microbial characterization and removal of anionic surfactant in an expanded granular sludge bed reactor

Cited by 57 publications

References 20 publications

Evaluation of the microbial diversity in sequencing batch reactor treating linear alkylbenzene sulfonate under denitrifying and mesophilic conditions using swine sludge as inoculum

Evaluation of the microbial diversity in sequencing batch reactor treating linear alkylbenzene sulfonate under denitrifying and mesophilic conditions using swine sludge as inoculum

Influence of co-substrates in the anaerobic degradation of an anionic surfactant

UASB treatment of chemical synthesis-based pharmaceutical wastewater containing rich organic sulfur compounds and sulfate and associated microbial characteristics

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