Thermophilic membrane bioreactors: A review

Duncan, Josh; Bokhary, Alnour; Fatehi, Pedram; Kong, Fangong; Lin, Hongjun; Liao, Baoqiang

doi:10.1016/j.biortech.2017.07.059

Cited by 44 publications

(15 citation statements)

References 77 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, higher rates of membrane fouling is observable in ThMBRs compared to the mesophilic ones [107,108,109]. This could be attributed to formation of more EPS in ThMBRs due to the deflocculation nature of thermophilic sludge [110]. The MLSS concentration is another key parameter controlled by SRT.…”

Section: Membrane Fouling and Fouling Mechanismsmentioning

confidence: 99%

“…The other classification of membrane fouling is based on the attachment strength of particles to the membranes or the method used to recover the initial permeability of the membranes. Four types of fouling are defined accordingly, namely reversible, irreversible, residual, and irrecoverable fouling, as in Table 4 and discussed below [110]:…”

Section: Membrane Fouling and Fouling Mechanismsmentioning

confidence: 99%

See 1 more Smart Citation

Recent Progresses in Application of Membrane Bioreactors in Production of Biohydrogen

et al. 2019

View full text Add to dashboard Cite

Biohydrogen is a clean and viable energy carrier generated through various green and renewable energy sources such as biomass. This review focused on the application of membrane bioreactors (MBRs), emphasizing the combination of these devices with biological processes, for bio-derived hydrogen production. Direct biophotolysis, indirect biophotolysis, photo-fermentation, dark fermentation, and conventional techniques are discussed as the common methods of biohydrogen production. The anaerobic process membrane bioreactors (AnMBRs) technology is presented and discussed as a preferable choice for producing biohydrogen due to its low cost and the ability of overcoming problems posed by carbon emissions. General features of AnMBRs and operational parameters are comprehensively overviewed. Although MBRs are being used as a well-established and mature technology with many full-scale plants around the world, membrane fouling still remains a serious obstacle and a future challenge. Therefore, this review highlights the main benefits and drawbacks of MBRs application, also discussing the comparison between organic and inorganic membranes utilization to determine which may constitute the best solution for providing pure hydrogen. Nevertheless, research is still needed to overcome remaining barriers to practical applications such as low yields and production rates, and to identify biohydrogen as one of the most appealing renewable energies in the future.

show abstract

Section: Membrane Fouling and Fouling Mechanismsmentioning

confidence: 99%

Section: Membrane Fouling and Fouling Mechanismsmentioning

confidence: 99%

Recent Progresses in Application of Membrane Bioreactors in Production of Biohydrogen

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Membrane filtration technologies mainly include microfiltration (MF), ultrafiltration (UF), nanofiltration (NF) and reverse osmosis (RO) (Guo et al, 2012). The pore size of MF and UF membranes are 0.1-1 μm and 0.01-0.1 μm respectively (Yuan and He, 2015;Duncan et al, 2017;Zuthi et al, 2017). Since the organic matters less than 1 kDa constitute the major part of AOC, MF and UF present little effect on AOC removal (LeChevallier, 1999).…”

Section: Membrane Filtrationmentioning

confidence: 99%

Assimilable organic carbon (AOC) variation in reclaimed water: Insight on biological stability evaluation and control for sustainable water reuse

Chen

Ngo

et al. 2018

Bioresource Technology

View full text Add to dashboard Cite

This review highlights the importance of conducting biological stability evaluation due to water reuse progression. Specifically, assimilable organic carbon (AOC) has been identified as a practical indicator for microbial occurrence and regrowth which ultimately influence biological stability. Newly modified AOC bioassays aimed for reclaimed water are introduced. Since elevated AOC levels are often detected after tertiary treatment, the review emphasizes that actions can be taken to either limit AOC levels prior to disinfection or conduct post-treatment (e.g. biological filtration) as a supplement to chemical oxidation based approaches (e.g. ozonation and chlorine disinfection). During subsequent distribution and storage, microbial community and possible microbial regrowth caused by complex interactions are discussed. It is suggested that microbial surveillance, AOC threshold values, real-time field applications and surrogate parameters could provide additional information. This review can be used to formulate regulatory plans and strategies, and to aid in deriving relevant control, management and operational guidance.

show abstract

“…Particularly when process water reclamation is envisaged, maintaining the temperature reduces the overall energy requirement. Despite its potentials (van Lier, 2008), thus far, full-scale anaerobic membrane bioreactors (AnMBRs) are not applied for high-temperature chemical wastewater treatment (Duncan et al, 2017). Only a few previous studies have shown the potential of thermophilic conditions for treating phenolic compounds in continuous reactors (Wang et al, 2011;Ramakrishnan and Surampalli, 2013).…”

Section: Introductionmentioning

confidence: 99%

Anaerobic Conversion of Saline Phenol-Containing Wastewater Under Thermophilic Conditions in a Membrane Bioreactor

Sierra

Rea

Cerqueda-García

et al. 2020

Front. Bioeng. Biotechnol.

View full text Add to dashboard Cite

Closing water loops in chemical industries result in hot and highly saline residual streams, often characterized by high strength and the presence of refractory or toxic compounds. These streams are attractive for anaerobic technologies, provided the chemical compounds are biodegradable. However, under such harsh conditions, effective biomass immobilization is difficult, limiting the use of the commonly applied sludge bed reactors. In this study, we assessed the long-term phenol conversion capacity of a lab-scale anaerobic membrane bioreactor (AnMBR) operated at 55 • C, and high salinity (18 gNa +. L −1). Over 388 days, bioreactor performance and microbial community dynamics were monitored using specific methanogenic activity (SMA) assays, phenol conversion rate assays, volatile fatty acids permeate characterization and Illumina MiSeq analysis of 16S rRNA gene sequences. Phenol accumulation to concentrations exceeding 600 mgPh. L −1 in the reactor significantly reduced methanogenesis at different phases of operation, while applying a phenol volumetric loading rate of 0.12 gPh. L −1. d −1. Stable AnMBR reactor performance could be attained by applying a sludge phenol loading rate of about 20 mgPh. gVSS −1. d −1. In situ maximum phenol conversion rates of 21.3 mgPh. gVSS −1. d −1 were achieved, whereas conversion rates of 32.8 mgPh. gVSS −1. d −1 were assessed in ex situ batch tests at the end of the operation. The absence of caproate as intermediate inferred that the phenol conversion pathway likely occurred via carboxylation to benzoate. Strikingly, the hydrogenotrophic SMA of 0.34 gCOD-CH 4. gVSS −1. d −1 of the AnMBR biomass significantly exceeded the acetotrophic SMA, which only reached 0.15 gCOD-CH 4. gVSS −1. d −1. Our results indicated that during the course of the experiment, acetate conversion gradually changed from acetoclastic methanogenesis to acetate oxidation coupled to hydrogenotrophic methanogenesis. Correspondingly, hydrogenotrophic methanogens of the class Methanomicrobia, together with Synergistia, Thermotogae, and Clostridia classes, dominated the microbial community and were enriched during the three phases of operation, while the aceticlastic Methanosaeta species remarkably decreased. Our findings clearly showed that highly saline phenolic wastewaters could be satisfactorily

show abstract

Thermophilic membrane bioreactors: A review

Cited by 44 publications

References 77 publications

Recent Progresses in Application of Membrane Bioreactors in Production of Biohydrogen

Recent Progresses in Application of Membrane Bioreactors in Production of Biohydrogen

Assimilable organic carbon (AOC) variation in reclaimed water: Insight on biological stability evaluation and control for sustainable water reuse

Anaerobic Conversion of Saline Phenol-Containing Wastewater Under Thermophilic Conditions in a Membrane Bioreactor

Contact Info

Product

Resources

About