Effects of packing rates of cubic-shaped polyurethane foam carriers on the microbial community and the removal of organics and nitrogen in moving bed biofilm reactors

Feng, Qing; Wang, Yuxiao; Wang, Tianmin; Zheng, Hao; Chu, Libing; Zhang, Chong; Chen, Hongzhang; Kong, Xiuqin; Xing, Xin‐Hui

doi:10.1016/j.biortech.2012.04.076

Cited by 109 publications

(25 citation statements)

References 26 publications

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“…Such behaviour might be due to the acclimation of biomass to the hydrocarbon content of the slops. The observed biofilm concentration was higher compared to previous experiences [57] carried out with polyurethane foam carriers. A possible explanation could be found in the higher organic loading rates as well as in the higher MLSS concentrations of the present study.…”

Section: Biomass Growthcontrasting

confidence: 71%

Performance of membrane bioreactor (MBR) systems for the treatment of shipboard slops: Assessment of hydrocarbon biodegradation and biomass activity under salinity variation

Bella

Prima

Trapani

et al. 2015

Journal of Hazardous Materials

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Section: Biomass Growthcontrasting

confidence: 71%

Performance of membrane bioreactor (MBR) systems for the treatment of shipboard slops: Assessment of hydrocarbon biodegradation and biomass activity under salinity variation

Bella

Prima

Trapani

et al. 2015

Journal of Hazardous Materials

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“…For comparison, the average masses of the cells in 5 mL of cell solution(OD 600 =0.5) and those in EBs were also investigated and found to be (1.92±0.55) and (0.59±0.12) mg, respectively, according to the biomass estimation method [27,28] . The pH of the medium was adjusted by adding 5% HCl or NaOH solution.…”

Section: Quinoline Degradationmentioning

confidence: 99%

Novel porous polyethersulfone beads as matrix to immobilize Comamonas testosteroni sp. bdq06 in quinoline biodegradation

Geng

Zhu

et al. 2015

Chem. Res. Chin. Univ.

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Novel matrix beads for the immobilization of strain Comamonas testosteroni sp. bdq06 to degrade quinoline were fabricated from polyethersulfone(PES). The beads have an average size of 3 mm and a surface dense layer of 20 microns. To help adhesion and proliferation of bacterial cells, the surfaces of the PES beads were etched, and numerous holes about 1.5 micrometers in diameter were generated as tunnels for cell colonizing in the larger internal cavities of about 5 micrometers in diameter. The quinoline degradation was remarkably enhanced by the cells immobilized in PES beads compared with that by the free cells at pH 5.0 or 10.0 and a temperature of 40 °C. The enhanced degradation of quinoline was contributed to the biofilm on the surface of PES beads, resulting in the significant reduction of retention time from 9 h to 2 h. Furthermore, the beads remain intact after the ultrasonic treatment of them for 30 min or recycling 50 times, indicating that they have excellent mechanical strength, flexibility and swelling capacity. Thus, PES beads have great potential to be matrix for the cell immobilization in bioaugmentation.

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“…The solid phase filling ratio (FR) (m 3 solid bulk per m 3 reactor empty volume) is 5−15% for basalt and 10−40% for polyethylene granules. It is noteworthy that larger plastic biofilm carriers which are used in moving bed biofilm reactors (e.g., AnoxKaldnes R K1 polyethylene carriers (Rusten et al, 2006) and polyurethane foam cubes 1−2 cm in size (Chu & Wang, 2011, Quan et al, 2012) are not used in pilot/industrial-scale circulating bed reactors. They are, however, used in few lab-scale circulating bed reactors (1-cm polyurethane cubes, 20% FR (Yang et al, 2006); Hacketten carrier and cylindrical carrier similar to K1, 50% FR ; oblique cylinder 60% inclination angle 2 cm φ x 2.5 cm similar to K1, 50% FR ).…”

Section: Circulating Bed Biofilm Reactorsmentioning

confidence: 99%

Model-based design of a pilot circulating bed membrane bioreactor for sewage treatment

Ismail

2017

EREM

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Population growth in developing countries leads to overloading existing sewage treatment plants. Additionally, suburban residential complexes are sometimes constructed and inhabited before their sewage treatment facilities are ready for various reasons. Therefore, there is a need for locally developed package units, which should be robust, modular, and require minimum maintenance. The following article describes the conceptual design of a hybrid bioreactor of such a unit intended to treat 120 m 3 of sewage per day. The design makes use of published literature in this regard over the last three decades. The proposed bioreactor consists of an upstream circulating bed compartment (CBC) with plastic biofilm carriers and a downstream microfiltration membrane compartment (MMC). Each of these two compartments has a nominal effective volume of 29 m 3 . The CBC is mainly anoxic whilst the MMC is aerobic (oxic) making the reactor an A/O arrangement. Following implementation, an initial experimental phase is envisaged to tune the reactor with respect to functionality and maximisation of nitrogen removal. Details of this tuning phase are also given in the article.

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Effects of packing rates of cubic-shaped polyurethane foam carriers on the microbial community and the removal of organics and nitrogen in moving bed biofilm reactors

Cited by 109 publications

References 26 publications

Performance of membrane bioreactor (MBR) systems for the treatment of shipboard slops: Assessment of hydrocarbon biodegradation and biomass activity under salinity variation

Performance of membrane bioreactor (MBR) systems for the treatment of shipboard slops: Assessment of hydrocarbon biodegradation and biomass activity under salinity variation

Novel porous polyethersulfone beads as matrix to immobilize Comamonas testosteroni sp. bdq06 in quinoline biodegradation

Model-based design of a pilot circulating bed membrane bioreactor for sewage treatment

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