Biofilm bioreactors for waste-water treatment

Loosdrecht, M.C.M. van; Heijnen, Sef J.

doi:10.1016/0167-7799(93)90085-n

Cited by 87 publications

(32 citation statements)

References 7 publications

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“…One of the key advantages of biofilm-based processes is the potentially high volumetric reaction rate that can be attained due the high specific biomass concentration. Unfortunately, this advantage is rarely exploited in full-scale processes as a result of oxygen transfer limitations into thick biofilms 4 . Biofilms in wastewater treatment systems are frequently thicker than the penetration depth of oxygen, typically 50μm to 150μm 4 and, under high carbon-loading rates, the process becomes oxygen transfer rate limited.…”

Section: Introductionmentioning

confidence: 99%

“…Unfortunately, this advantage is rarely exploited in full-scale processes as a result of oxygen transfer limitations into thick biofilms 4 . Biofilms in wastewater treatment systems are frequently thicker than the penetration depth of oxygen, typically 50μm to 150μm 4 and, under high carbon-loading rates, the process becomes oxygen transfer rate limited. This problem, combined with the difficulty in controlling biofilm thickness has resulted in the application of biofilm technology predominantly for low-rate processes.…”

Section: Introductionmentioning

confidence: 99%

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Membrane-Aerated Biofilms for High Rate Biotreatment: Performance Appraisal, Engineering Principles, Scale-up, and Development Requirements

Syron

Casey

2008

Environ. Sci. Technol.

224

126

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RECEIVED DATE (to be automatically inserted after your manuscript is accepted if required according to the journal that you are submitting your paper to)Running title: membrane-aerated biofilms for high-rate biotreatment. Phone +35317161877ABSTRACT: Diffusion of the electron acceptor is the rate controlling step in virtually all biofilm reactors employed for aerobic wastewater treatment. The membrane-aerated biofilm reactor (MABR) is a technology that can deliver oxygen at high rates and transfer efficiencies, thereby enhancing the biofilm activity. This paper provides a comparative performance rate analysis of the MABR in terms of its application for carbonaceous pollutant removal, nitrification/denitrification and xenobiotic biotreatment. We also describe the mechanisms influencing process performance in the MABR and the inter-relationships between these factors. The challenges involved in scaling-up the process are discussed with recommendations for prioritization of research needs.`

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Membrane-Aerated Biofilms for High Rate Biotreatment: Performance Appraisal, Engineering Principles, Scale-up, and Development Requirements

Syron

Casey

2008

Environ. Sci. Technol.

224

126

View full text Add to dashboard Cite

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“…17,164,209 Prieto et al 173 reported that immobilized cells of Rhodococcus erythropolis degraded phenol faster and with shorter lag phase compared with suspended cells of the same strain. Immobilized cells could completely degrade 11 kg m −3 d −1 , which was about 8.5 times more than the maximum rate calculated for suspended cultures.…”

Section: Bioreactor Considerations For the Treatment Of Highly Variabmentioning

confidence: 99%

Biotreatment of Industrial Wastewaters under Transient-State Conditions: Process Stability with Fluctuations of Organic Load, Substrates, Toxicants, and Environmental Parameters

Sipma

Osuna

Emanuelsson

et al. 2010

Critical Reviews in Environmental Science and Technology

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Biotreatment of industrial wastewater is often challenged by operation under transient states with respect to organic loads, pollutants, and physical characteristics. Furthermore, the potential presence of inhibitory compounds requires careful monitoring and adequate process design. This review describes difficulties encountered in biological treatment of wastewater with highly variable influent characteristics. Typical design aspects of biological processes are presented and discussed with respect to their success in treating highly fluctuating wastewaters. In general, biomass retention is a key factor for dealing with highly fluctuating and/or inhibitory wastewater, but the how it operates also affects the stability of performance, as it was shown that dynamic operation instead of operation at a constant flow enhances biodegradation onset and more evenly distributed activity. Although ultimately stable effluent quality must be achieved, the microbial population stability is not necessarily high, as it was shown that microbial diversity and flexibility may play a critical role in functional stability.

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“…In environmental bioprocesses unlike other industrial bioprocesses, large volumes of dilute aqueous solutions have to be treated and the processes need to be operated at high biomass without the need to separate the biomass and treated effluent [1]. In order to obtain compact plants and ensure greater treatment reliability, fixed film reactors can be developed.…”

Section: Immobilisation Of Microorganisms In Biofilms Ismentioning

confidence: 99%

Polycyclic Aromatic Hydrocarbon Biodegradation by a Subtropical White Rot Fungus in Packed Bed and Suspended Carrier Bioreactor Systems

Tekere

Read

Mattìasson³

2007

Environmental Technology

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Application of a biotreatment system utilising immobilised white rot fungi can become an alternative for treating water or effluent contaminated by organic pollutants such as polycyclic aromatic hydrocarbons (PAHs). The application of the packed bed and suspended carrier bioreactor systems for the degradation of PAHs in synthetic polluted media using a subtropical white rot fungal isolate DSPM95 was evaluated. The white rot fungal isolate, DSPM95 could reduce a mixture of selected PAHs namely; fluorene, phenanthrene, anthracene, pyrene and benzo(a)anthracene by 50 to 96% over the reactor operation time of 31 days and when the concentration of each PAH in the feed medium was 1 mg l(-1). High manganese peroxidase and laccase activities were detectable during PAH biodegradation in both the bioreactor systems, however the maximum enzyme activities could not be sustained in the bioreactors for extended periods of time. Varying concentrations of glucose to nutrient nitrogen in the feed medium could not help sustain high enzyme production in the bioreactor. It can be concluded that the white rot fungi used here could efficiently degrade the PAH compounds in both the packed bed and suspended carrier bioreactor system, which compares well with other studies as highlighted in this report.

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Biofilm bioreactors for waste-water treatment

Cited by 87 publications

References 7 publications

Membrane-Aerated Biofilms for High Rate Biotreatment: Performance Appraisal, Engineering Principles, Scale-up, and Development Requirements

Membrane-Aerated Biofilms for High Rate Biotreatment: Performance Appraisal, Engineering Principles, Scale-up, and Development Requirements

Biotreatment of Industrial Wastewaters under Transient-State Conditions: Process Stability with Fluctuations of Organic Load, Substrates, Toxicants, and Environmental Parameters

Polycyclic Aromatic Hydrocarbon Biodegradation by a Subtropical White Rot Fungus in Packed Bed and Suspended Carrier Bioreactor Systems

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