Biodegradable polymers as solid substrate and biofilm carrier for denitrification in recirculated aquaculture systems

Boley, A.; Müller, W.; Haider, Gerhard

doi:10.1016/s0144-8609(00)00033-9

Cited by 218 publications

(93 citation statements)

References 2 publications

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“…As a result, the acclimation time of SPCL10 and SPCL12 was shorter than PCL. The acclimation time of PCL in this study was similar to that obtained by Boley et al (2000), but is shorter than that of PLA (40 days) (Fan et al 2012). Surface hydrophobicity of carriers was also an influencing factor for cell attachment.…”

Section: Characterization By Ftir and Semsupporting

confidence: 79%

“…To avoid these problems, a new type of denitrification method has been designed in recent years, using insoluble biodegradable polymers as carbon source and biofilm carrier simultaneously, which is accessible only by enzymatic attack (Boley et al 2000). There are two kinds of solid carbon sources, namely natural materials, including wheat straw (Aslan and Türkman 2005;Fan et al 2012;Soares and Abeliovich 1998), cotton (Volokita et al 1996a), waste newspaper (Volokita et al 1996b), pine bark (Trois et al 2010a, b), crab-shell chitin (Robinson-Lora and Brennan 2009) and synthetic polymers, such as polyhydroxyalkanoates (PHAs) (Hiraishi and Khan 2003), polycaprolactone (PCL) (Boley et al 2000;Boley and Müller 2005;Wang and Wang 2009;Zhou et al 2009;Chu and Wang 2011a, b;Shen and Wang 2011;Chu and Wang 2013;Shen et al 2013a;Wu et al 2013a), PBS (Wu et al 2013b) and polylactic acid (PLA) Shen et al 2013b). However, synthetic polymers are expensive, while natural materials were much cheaper but may bring ammonia (Robinson-Lora and Brennan 2009), high dissolved organic carbon (DOC) release and color problems (Aslan and Türkman 2003).…”

Section: Introductionmentioning

confidence: 99%

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Comparison of polycaprolactone and starch/polycaprolactone blends as carbon source for biological denitrification

Shen

Wang

et al. 2014

Int. J. Environ. Sci. Technol.

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The cross-linked starch/polycaprolactone (SPCL10) and starch/polycaprolactone (SPCL12) blends were prepared, characterized and used as carbon source and biofilm support for biological nitrate removal. The results showed that SPCL10 and SPCL12 had similar performance on water absorption (about 21 %) and leaching capacity. FTIR spectra confirmed the cross-linking reaction between starch and PCL. SEM displayed a thermoplastic nature of SPCL10 and SPCL12. These blends could serve as solid carbon source and biofilm support for biological denitrification, and the acclimation time of microbial biofilm on the surfaces of SPCL10, SPCL12 and PCL were about 2 days, 2 days and 16 days, respectively. The average denitrification rates were 0.0216, 0.0154 and 0.0071 mg NO 3 -N/(g h) for SPCL10, SPCL12 and PCL, respectively, and the effluent NO 2 -N concentration was below 1 mg/L at all cases. The phenomenon of ammonia formation was observed, but ammonia concentration was below 0.5 mg/L.

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Section: Characterization By Ftir and Semsupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Comparison of polycaprolactone and starch/polycaprolactone blends as carbon source for biological denitrification

Shen

Wang

et al. 2014

Int. J. Environ. Sci. Technol.

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“…Usually, dissolved carbon source such as ethanol, methanol or acetate is used as electron donors for nitrate reduction (Bandpi et al 1999). The disadvantage of this treatment process is the need of a close, rather sophisticated process control, and has the risk of overdosing with the resultant deterioration of effluent water quality (Boley et al 2000). To avoid above-mentioned problems, insoluble substrates (solid carbon sources) including wheat straw, cotton, polycaprolactone (PCL) and polyhydroxyalkanoates (PHAs) as an alternative to the liquid carbon sources have been successfully employed in denitrification process by some researchers in recent years (Soares and Abeliovich 1998;Boley et al 2003;Hiraishi and Khan 2003;Wang and Wang 2009).…”

Section: Introductionmentioning

confidence: 99%

Denitrification of nitrate-contaminated groundwater using biodegradable snack ware as carbon source under low-temperature condition

Wang

2011

Int. J. Environ. Sci. Technol.

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A considerable increase in nitrate concentration in groundwater has been observed in many countries. This research focuses on nitrate removal using biodegradable snack ware (BSW) as both carbon source and biofilm support for denitrifiers. The denitrification efficiency of a laboratory-scale denitrification reactor packed with BSW was examined in a low-temperature condition. The nitrate removal efficiency supported by BSW decreased to approximately 40% at 12°C from nearly 100% at 25°C with 50 mg/L of nitrate-nitrogen in the influent and 2 h of hydraulic retention time (HRT). The complete nitrate removal was obtained when nitrate-nitrogen concentration was no more than 15 mg/L at 2 h of HRT and at 12°C. If the initial concentration of nitrate-nitrogen was 50 mg/L, 5 h of HRT was needed for the complete nitrate removal. Nitrite concentration in the treated water decreased evidently as HRT was increased from 2 to 5 h, or as nitratenitrogen concentration in the influent decreased to 15 mg/L from 50 mg/L. It was observed that varying HRT and nitrate concentration in the influent had no noticeable effect on dissolved organic carbon content in the effluent under the experimental conditions. This study indicated that the complete nitrate removal could be achieved readily even at 12°C using BSW as carbon source by changing HRT or the initial concentration of nitrate in the influent, which has some useful implications in environmental engineering practice.

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“…Promising solid substrates for denitrification are polyhydroxyalkanoates (PHAs) and some other biodegradable aliphatic polyesters. To date, SPD processes using poly(3-hydroxybutyrate) (PHB) 31) and its copolymer, poly(3-hydroxybutyrate-co-hydroxyvalarate) (PHBV) 6,26,30) , have been most intensively studied. The application of poly(ε-caprolactone) (PCL) to SPD processes has also been reported [4][5][6]22) .…”

mentioning

confidence: 99%

Activity and Community Composition of Denitrifying Bacteria in Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)-Using Solid-phase Denitrification Processes

et al. 2007

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Two laboratory-scale solid-phase denitrification (SPD) reactors, designated reactors A and B, for nitrogen removal were constructed by acclimating activated sludge with pellets and flakes of poly(3-hydoxybutyrate-co-3-hydroxyvalerate) (PHBV) as the sole added substrate under denitrifying conditions, respectively. The average denitrification rate in both reactors was 60 mg NO3 − -N g −1 (dry wt) h −1 under steady-state conditions, whereas washed sludge taken from the reactors showed an average denitrification rate of 20 mg NO3-N g −1 (dry wt) hwith fresh PHBV as the sole substrate. The difference in the denitrification rate between the two might be due to the bioavailability of intermediate metabolites as the substrate for denitrification, because acetate and 3-hydroxybutyrate were detected in the reactors. Most of the predominant denitrifiers isolated quantitatively by the platecounting method using non-selective agar medium were unable to degrade PHBV and were identified as members of genera of the class Betaproteobacteria by studying 16S rRNA gene sequence information. nirS and nosZ gene clone library-based analyses of the microbial community from SPD reactor A showed that most of the nirS and nosZ clones proved to be derived from members of the family Comamonadaceae and other phylogenetic groups of the Betaproteobacteria. These results suggest that the efficiency of denitrification in the PHBV-SPD process is affected by the availability of intermediate metabolites as possible reducing-power sources as well as of the solid substrate, and that particular species of the Betaproteobacteria play the primary role in denitrification in this process.

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Biodegradable polymers as solid substrate and biofilm carrier for denitrification in recirculated aquaculture systems

Cited by 218 publications

References 2 publications

Comparison of polycaprolactone and starch/polycaprolactone blends as carbon source for biological denitrification

Comparison of polycaprolactone and starch/polycaprolactone blends as carbon source for biological denitrification

Denitrification of nitrate-contaminated groundwater using biodegradable snack ware as carbon source under low-temperature condition

Activity and Community Composition of Denitrifying Bacteria in Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)-Using Solid-phase Denitrification Processes

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