Progress in osmotic membrane bioreactors research: Contaminant removal, microbial community and bioenergy production in wastewater

Hosseinzadeh, Ahmad; Zhou, John L.; Navidpour, Amir Hossein; Altaee, Ali

doi:10.1016/j.biortech.2021.124998

Cited by 27 publications

(7 citation statements)

References 146 publications

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“…The abundance of Candidatus saccharibacteria, Bacteroidetes, and Firmicutes increased in the samples from both of the two reactors on day 10, while the Proteobacteria abundance decreased. It has been reported that Candidatus saccharibacteria prefers to enrich with complex carbon sources [39]. As domestication proceeded, Candidatus saccharibacteria showed obvious differences in the control and fermentation broth-added treatments and was much higher in the fermentation broth-added treatment on day 20.…”

Section: Community Dynamics Of Activated Sludgementioning

confidence: 93%

Microbiological Mechanisms for Nitrogen Removal Using Anaerobic Fermentation Liquid from Spent Mushroom Substrates as a Carbon Source

Chen,

Zhang,

et al. 2023

Water

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In wastewater treatment, a low C/N ratio highly inhibits the bioremoval of nitrogen, and commercial external carbon sources are widely used. In order to obtain an economical substitute, fermentation broth of spent mushroom substrates (SMS) was employed here as a carbon source for denitrification in a sequencing batch reactor (SBR). During the domestication process, the SMS fermentation broth-feeding treatment presented comparable nitrogen removal ability (74.44%) with a commercial carbon source group (77.99%). Rhodobacter, Lactobacillus and Pseudomonas were the dominant bacteria in the fermentation broth, and Saccharomycetales Gymnopilus dilepis was the dominant fungi. At the early domestication stage, the relatively high concentration of fermentation broth led to a much lower abundance of typical nitrate reductase genes than the control group. Furthermore, extracellular polymeric substance (EPS) formation was observed in the broth-feeding sample. The microbial structure dynamic was investigated, which showed a high influent effect when 20% fermentation broth was added. As domestication proceeded, similar dominant species in the control and broth-feeding treatments were observed. Overall, SMS fermentation broth can be used as a promising substitute to replace a costly commercial carbon source.

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Section: Community Dynamics Of Activated Sludgementioning

confidence: 93%

Microbiological Mechanisms for Nitrogen Removal Using Anaerobic Fermentation Liquid from Spent Mushroom Substrates as a Carbon Source

Chen,

Zhang,

et al. 2023

Water

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“…The RGO prepared by chemical reduction was highly efficient with satisfying quality in comparison of RGO obtained by nonchemical reduction methods [61,62]. However, difficulties of scalability and the time-consuming process are hindrances.…”

Section: Chemical Reductionmentioning

confidence: 98%

Graphene Oxide and its Derivatives for Gas Separation Membranes

2021

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Graphene oxide (GO), a derivative of graphene with a hydrophilic 2D crystalline nanostructure and being an exfoliated form of graphite, is designed with several oxygen-functional groups. Due to its characteristics it has attracted much interest for applications for gas separation membranes. This review focuses on GO-containing membranes for gas separation. A basic look at gas separation membranes is presented, and the properties of graphene, GO, reduced GO (RGO) as well as their preparation approaches are covered. Different methods for fabrication of GO membranes in the style of mixedmatrix membranes, thin-film composites, layered GO membranes etc. are investigated. The gas separation performance of fabricated GO membranes is evaluated, highlighting recent developments and prospectives. Finally, future trends of GO membranes are described.

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“…Various hybrid and integrated MBR configurations have been explored [80][81][82]. Keerthi et al [83] have a reported hybrid MBR consisting of integrated electrocoagulation, biological, and microfiltration processes for the treatment of ternary effluents.…”

Section: Hybrid Systems Mbrsmentioning

confidence: 99%

Removal of Emerging Contaminants from Wastewater Streams Using Membrane Bioreactors: A Review

Sengupta

Jebur

Kamaz³

et al. 2021

Membranes

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Water is a very valuable natural resource. As the demand for water increases the presence of emerging contaminants in wastewater has become a growing concern. This is particularly true when one considers direct reuse of wastewater. Obtaining sufficient removal of emerging contaminants will require determining the level of removal for the various unit operations in the wastewater treatment process. Membrane bioreactors are attractive as they combine an activated sludge process with a membrane separation step. They are frequently used in a wastewater treatment process and can operate at higher solid loadings than conventional activated sludge processes. Determining the level of removal of emerging contaminants in the membrane bioreactor step is, therefore, of great interest. Removal of emerging contaminants could be by adsorption onto the biomass or membrane surface, biotransformation, size exclusion by the membrane, or volatilization. Given the fact that most emerging contaminants are low molecule weight non-volatile compounds, the latter two methods of removal are usually unimportant. However, biotransformation and adsorption onto the biomass are important mechanisms of removal. It will be important to determine if the microorganisms present at given treatment facility are able to remove ECs present in the wastewater.

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Progress in osmotic membrane bioreactors research: Contaminant removal, microbial community and bioenergy production in wastewater

Cited by 27 publications

References 146 publications

Microbiological Mechanisms for Nitrogen Removal Using Anaerobic Fermentation Liquid from Spent Mushroom Substrates as a Carbon Source

Microbiological Mechanisms for Nitrogen Removal Using Anaerobic Fermentation Liquid from Spent Mushroom Substrates as a Carbon Source

Graphene Oxide and its Derivatives for Gas Separation Membranes

Removal of Emerging Contaminants from Wastewater Streams Using Membrane Bioreactors: A Review

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