A membrane biofilm reactor for hydrogenotrophic methanation

Pratofiorito, Giorgio; Hackbarth, Max; Mandel, Carmen; Madlanga, Siyavuya; West, Stephanie; Horn, Harald; Hille-Reichel, Andrea

doi:10.1016/j.biortech.2020.124444

Cited by 18 publications

(3 citation statements)

References 46 publications

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“…The membrane biofilm reactor (MBfR) represents a novel approach to water treatment, integrating membrane separation technology with bioprocessing techniques. This method involves the arrangement of multiple hollow fiber membranes in a specific manner within a container to form a complete set of filtration and separation membrane components [11]. Hydrogen (H 2) or methane (CH 4 ) serves as the electron donor to facilitate the reduction of oxidative pollutants in water.…”

Section: The Basic Principles Of Mbfrmentioning

confidence: 99%

Impact of Nitrate on the Removal of Pollutants from Water in Reducing Gas-Based Membrane Biofilm Reactors: A Review

Zhang,

Huang,

et al. 2024

Membranes

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The membrane biofilm reactor (MBfR) is a novel wastewater treatment technology, garnering attention due to its high gas utilization rate and effective pollutant removal capability. This paper outlines the working mechanism, advantages, and disadvantages of MBfR, and the denitrification pathways, assessing the efficacy of MBfR in removing oxidized pollutants (sulfate (SO4−), perchlorate (ClO4−)), heavy metal ions (chromates (Cr(VI)), selenates (Se(VI))), and organic pollutants (tetracycline (TC), p-chloronitrobenzene (p-CNB)), and delves into the role of related microorganisms. Specifically, through the addition of nitrates (NO3−), this paper analyzes its impact on the removal efficiency of other pollutants and explores the changes in microbial communities. The results of the study show that NO3− inhibits the removal of other pollutants (oxidizing pollutants, heavy metal ions and organic pollutants), etc., in the simultaneous removal of multiple pollutants by MBfR.

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Section: The Basic Principles Of Mbfrmentioning

confidence: 99%

Impact of Nitrate on the Removal of Pollutants from Water in Reducing Gas-Based Membrane Biofilm Reactors: A Review

Zhang,

Huang,

et al. 2024

Membranes

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“…By feeding a H 2 : CO 2 of 4:1, 2.21 v v −1 d −1 space-time yield, which is methane volume produced per reactor volume and day, was able to be achieved. Protofiorito and coworkers [ 78 ] produced a maximum methane production per reactor volume of 1.17 Nm 3 /m 3 with a 97 percent methane content utilizing a custom-made membrane biofilm reactor with a membrane surface to reactor volume ratio of 57.9 m 2 /m 3 . The authors predicted that productivity might be increased to 12 Nm 3 m −3 d −1 by employing a system with a 600 m 2 /m 3 specific membrane surface by using capillary or hollow fiber membranes with a considerably smaller diameter.…”

Section: Bioreactor Systems: Hydrogenotrophic Methanationmentioning

confidence: 99%

Reactor Designs and Configurations for Biological and Bioelectrochemical C1 Gas Conversion: A Review

Ayol

Peixoto

Keskin

et al. 2021

IJERPH

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Microbial C1 gas conversion technologies have developed into a potentially promising technology for converting waste gases (CO2, CO) into chemicals, fuels, and other materials. However, the mass transfer constraint of these poorly soluble substrates to microorganisms is an important challenge to maximize the efficiencies of the processes. These technologies have attracted significant scientific interest in recent years, and many reactor designs have been explored. Syngas fermentation and hydrogenotrophic methanation use molecular hydrogen as an electron donor. Furthermore, the sequestration of CO2 and the generation of valuable chemicals through the application of a biocathode in bioelectrochemical cells have been evaluated for their great potential to contribute to sustainability. Through a process termed microbial chain elongation, the product portfolio from C1 gas conversion may be expanded further by carefully driving microorganisms to perform acetogenesis, solventogenesis, and reverse β-oxidation. The purpose of this review is to provide an overview of the various kinds of bioreactors that are employed in these microbial C1 conversion processes.

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“…During the hydrogenotrophic methanogenesis, H 2 is oxidized via hydrogenases (Ni-Fe enzymes), and ferredoxin (coenzyme F 420 ) is reduced [36]. Additionally, for the Wood-Ljungdahl reaction for homoacetogenic acetate production and the acetate split to CO 2 and CH 4, the trace elements Fe, Co, Ni, and S are needed [37].…”

Section: Introductionmentioning

confidence: 99%

Biological Methanation in an Anaerobic Biofilm Reactor—Trace Element and Mineral Requirements for Stable Operation

et al. 2023

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Biological methanation of carbon dioxide using hydrogen makes it possible to improve the methane and energy content of biogas produced from sewage sludge and organic residuals and to reach the requirements for injection into the natural gas network. Biofilm reactors, so-called trickling bed reactors, offer a relatively simple, energy-efficient, and reliable technique for upgrading biogas via ex-situ methanation. A mesophilic lab-scale biofilm reactor was operated continuously for nine months to upgrade biogas from anaerobic sewage sludge digestion to a methane content >98%. To supply essential trace elements to the biomass, a stock solution was fed to the trickling liquid. Besides standard parameters and gas quality, concentrations of Na, K, Ca, Mg, Ni, and Fe were measured in the liquid and the biofilm using ICP-OES (inductively coupled plasma optical emission spectrometry) to examine the biofilms load-dependent uptake rate and to calculate quantities required for a stable operation. Additionally, microbial community dynamics were monitored by amplicon sequencing (16S rRNA gene). It was found that all investigated (trace) elements are taken up by the biomass. Some are absorbed depending on the load, others independently of it. For example, a biomass-specific uptake of 0.13 mg·g−1·d−1 for Ni and up to 50 mg·g−1·d−1 for Mg were measured.

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A membrane biofilm reactor for hydrogenotrophic methanation

Cited by 18 publications

References 46 publications

Impact of Nitrate on the Removal of Pollutants from Water in Reducing Gas-Based Membrane Biofilm Reactors: A Review

Impact of Nitrate on the Removal of Pollutants from Water in Reducing Gas-Based Membrane Biofilm Reactors: A Review

Reactor Designs and Configurations for Biological and Bioelectrochemical C1 Gas Conversion: A Review

Biological Methanation in an Anaerobic Biofilm Reactor—Trace Element and Mineral Requirements for Stable Operation

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