Anaerobic membrane bioreactor (AnMBR) scale-up from laboratory to pilot-scale for microalgae and primary sludge co-digestion: Biological and filtration assessment

Serna-García, R.; Mora-Sánchez, J.F.; Sanchis-Perucho, Pau; Bouzas, A.; Seco, A.

doi:10.1016/j.biortech.2020.123930

Cited by 15 publications

(12 citation statements)

References 30 publications

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“…Microbial community examination showed that UF membrane was able to retain the variety of microbial species within the bioreactor. Even if the C/N ratio of the mixture in the study was lower than the optimal range reported in the literature, high organic matter degradation can be explained by the enriched microbial community due to membrane retention (Serna-García et al 2020c). Among the microbial community, Chloroflexi and Proteobacteria were the most abundant phyla.…”

Section: Sludge Streammentioning

confidence: 71%

Enhanced energy recovery in municipal wastewater treatment plants through co-digestion by anaerobic membrane bioreactors: current status and future perspectives

Cengiz,

Guven,

Ozgun

et al. 2024

Rev Environ Sci Biotechnol

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Today, the transition to renewable energy from conventional energy practices is more important than ever to establish energy security and mitigate climate change. The wastewater treatment plants (WWTP) consume a remarkable amount of energy and cause significant greenhouse gas emissions. The energy balance of WWTP can be improved by implementing energy-efficient applications such as anaerobic digestion. However, most of the existing WWTPs utilize only sewage sludge in conventional anaerobic digesters (CAD) which results in low biogas generation. Generally, co-digestion is indicated as an effective solution for the low biogas generation faced in mono-digestion. Moreover, recently, anaerobic membrane bioreactors (AnMBR) have been promoted as a prominent alternative to CADs. This paper overviews the current situation of co-digestion applications by AnMBRs for municipal WWTPs. Furthermore, the environmental and economic aspects of these applications were reviewed. Lastly, challenges and future perspectives related to the co-digestion applications by AnMBR were thoroughly discussed. Graphical Abstract

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Section: Sludge Streammentioning

confidence: 71%

Enhanced energy recovery in municipal wastewater treatment plants through co-digestion by anaerobic membrane bioreactors: current status and future perspectives

Cengiz,

Guven,

Ozgun

et al. 2024

Rev Environ Sci Biotechnol

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“…Conventional aerobic and chemical WW nutrient removal methods require high energy consumption, have long process times, and result in carbon emissions as well as excess sludge discharge (Li et al, 2019). In contrast, anaerobic membrane bioreactors (AnMBRs) require less energy while efficiently removing organic matter and suspended solids (Serna-García et al, 2020a). AnMBR technology yields energy rich biogas (methane, CH 4 ) as a co-product of wastewater treatment, however, with a high percentage of carbon dioxide (CO 2 ) (Viruela et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Biomass generation and heterologous isoprenoid milking from engineered microalgae grown in anaerobic membrane bioreactor effluent

Freitas¹,

Overmans²,

Medina³

et al. 2023

Water Research

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“…Conventional WW nutrient removal methods, both aerobic and chemical treatments, require high energy consumption and long process times while resulting in carbon emissions and excess sludge discharge (Li et al, 2019). In contrast, anaerobic membrane bioreactors (AnMBRs) have lower energy requirements while efficiently removing organic matter and suspended solids (Serna-García et al, 2020a). AnMBR process efficiencies are achieved by the combination of anaerobic microbial metabolism and high-surface area filtration technologies (Viruela et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Biomass generation and heterologous isoprenoid milking from engineered microalgae grown in anaerobic membrane bioreactor effluent

Freitas

Overmans

Medina

et al. 2022

Preprint

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Wastewater (WW) treatment in anaerobic membrane bioreactors (AnMBR) is considered more sustainable than in their aerobic counterparts. However, outputs from AnMBR are mixed methane and carbon dioxide gas streams as well as ammonium- (N) and phosphate- (P) containing waters. Using AnMBR outputs as inputs for photoautotrophic algal cultivation can strip the CO2 and remove N and P from effluent which feed algal biomass generation. Recent advances in algal engineering have generated strains for concomitant high-value side product generation in addition to biomass, although only shown in heavily domesticated, lab-adapted strains. Here, investigated whether such a strain of Chlamydomonas reinhardtii could be grown directly in AnMBR effluent with CO2 at concentrations found in its off-gas. The domesticated strain was found to proliferate over bacteria in the non-sterile effluent, consume N and P to levels that meet general discharge or reuse limits, and tolerate cultivation in modelled (extreme) outdoor environmental conditions prevalent along the central Red Sea coast. High-value co-product milking was then demonstrated, up to 837 micro g / L culture in 96 h, in addition to algal biomass production, ~2.4 g CDW / L in 96 h, directly in effluents. This is the first demonstration of a combined bio-process that employs a heavily engineered algal strain to enhance the product generation potentials from AnMBR effluent treatment. This study shows it is possible to convert waste into value through use of engineered algae while also improve wastewater treatment economics through co-product generation.

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Anaerobic membrane bioreactor (AnMBR) scale-up from laboratory to pilot-scale for microalgae and primary sludge co-digestion: Biological and filtration assessment

Cited by 15 publications

References 30 publications

Enhanced energy recovery in municipal wastewater treatment plants through co-digestion by anaerobic membrane bioreactors: current status and future perspectives

Enhanced energy recovery in municipal wastewater treatment plants through co-digestion by anaerobic membrane bioreactors: current status and future perspectives

Biomass generation and heterologous isoprenoid milking from engineered microalgae grown in anaerobic membrane bioreactor effluent

Biomass generation and heterologous isoprenoid milking from engineered microalgae grown in anaerobic membrane bioreactor effluent

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