Biogas Upgrading and Ammonia Recovery from Livestock Manure Digestates in a Combined Electromethanogenic Biocathode—Hydrophobic Membrane System

Cerrillo, Míriam; Burgos, Laura; Blasi, August Bonmatí

doi:10.3390/en14020503

Cited by 21 publications

(8 citation statements)

References 52 publications

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“…The hydrogenotrophic methanogens were the major leading species in the microbial population (Bo et al 2014). Hence, the in situ hydrogen production by using the bioelectrochemical system could boost hydrogenotrophic methanogens' activity, thus altering the microbial dominance (Cerrillo et al 2021;Gao et al 2021).…”

Section: Improving Hydrogen Mass Transfer and Utilisation Efficiencymentioning

confidence: 99%

Integration of biogas systems into a carbon zero and hydrogen economy: a review

et al. 2022

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The Ukraine conflict has put critical pressure on gas supplies and increased the price of fertilisers. As a consequence, biogas has gained remarkable attention as a local source of both gas for energy and biofertiliser for agriculture. Moreover, climate change-related damage incentivises all sectors to decarbonise and integrate sustainable practices. For instance, anaerobic digestion allows decarbonisation and optimal waste management. Incorporating a biogas system in each country would limit global warming to 2 °C. If suitable policies mechanisms are implemented, the biogas industry could reduce global greenhouse gas emissions by 3.29–4.36 gigatonnes carbon dioxide equivalent, which represent about 10–13% of global emissions. Here, we review the role of the biogas sector in capturing methane and mitigating carbon emissions associated with biogas outputs. Since biogas impurities can cause severe practical difficulties in biogas storing and gas grid delivering systems, we present upgrading technologies that remove or consume the carbon dioxide in raw biogas, to achieve a minimum of 95% methane content. We discuss the role of hydrogen-assisted biological biogas upgrading in carbon sequestration by converting carbon dioxide to biomethane via utilising hydrogen generated primarily through other renewable energy sources such as water electrolysis and photovoltaic solar facilities or wind turbines. This conceptual shift of 'power to gas' allows storing and utilising the excess of energy generated in grids. By converting carbon dioxide produced during anaerobic digestion into additional biomethane, biogas has the potential to meet 53% of the demand for fossil natural gas. We also evaluate the role of digestate from biogas systems in producing biochar, which can be used directly as a biofertiliser or indirectly as a biomethanation enhancement, upgrading, and cleaning material.

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Section: Improving Hydrogen Mass Transfer and Utilisation Efficiencymentioning

confidence: 99%

Integration of biogas systems into a carbon zero and hydrogen economy: a review

et al. 2022

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“…The ammonium ions in LFD can also be transformed to the gaseous phases such as hydrogen, ammonia, and N 2 O through hydrolysis, stripping, and Nitrification-denitrification process respectively, for further utilization as an energy source [ 211 ]. For recovery of ammonia and biogas (up-gradation) from the wastewater digestates of high strength, a hydrophobic membrane-based ammonia recovery system link coupled with an electromethanogenic microbial electrolysis cell has been reported [ 212 ].…”

Section: Solutionsmentioning

confidence: 99%

Overview on agricultural potentials of biogas slurry (BGS): applications, challenges, and solutions

Kumar

Verma

Sharma

et al. 2022

Biomass Conv. Bioref.

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Graphical abstract The residual slurry obtained from the anaerobic digestion (AD) of biogas feed substrates such as livestock dung is known as BGS. BGS is a rich source of nutrients and bioactive compounds having an important role in establishing diverse microbial communities, accelerating nutrient use efficiency, and promoting overall soil and plant health management. However, challenges such as lower C/N transformation rates, ammonia volatilization, high pH, and bulkiness limit their extensive applications. Here we review the strategies of BGS valorization through microbial and organomineral amendments. Such cohesive approaches can serve dual purposes viz. green organic inputs for sustainable agriculture practices and value addition of biomass waste. The literature survey has been conducted to identify the knowledge gaps and critically analyze the latest technological interventions to upgrade the BGS for potential applications in agriculture fields. The major points are as follows: (1) Bio/nanotechnology-inspired approaches could serve as a constructive platform for integrating BGS with other organic materials to exploit microbial diversity dynamics through multi-substrate interactions. (2) Advancements in next-generation sequencing (NGS) pave an ideal pathway to study the complex microflora and translate the potential information into bioprospecting of BGS to ameliorate existing bio-fertilizer formulations. (3) Nanoparticles (NPs) have the potential to establish a link between syntrophic bacteria and methanogens through direct interspecies electron transfer and thereby contribute towards improved efficiency of AD. (4) Developments in techniques of nutrient recovery from the BGS facilities’ negative GHGs emissions and energy-efficient models for nitrogen removal. (5) Possibilities of formulating low-cost substrates for mass-multiplication of beneficial microbes, bioprospecting of such microbes to produce bioactive compounds of anti-phytopathogenic activities, and developing BGS-inspired biofertilizer formulations integrating NPs, microbial inoculants, and deoiled seed cakes have been examined.

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“…The LCA analysis shows a simple payback (SPB) of 3.78 years and in internal rate of return (IRR) of 22%. Cerrillo et al [114] studied the methane production by means of an electromethanogenic Microbial Electrolysis Cell (MEC), which allows the conversion of CO 2 into CH 4 . Furthermore, this system allows the recovery of ammonia since the MEC is coupled with a Cation Exchange Membrane (CEM) and an Ammonia Recovery System based on Hydrophobic Membrane (ARS-HM).…”

Section: Hydrogen To Biomethanementioning

confidence: 99%

A Review of the State of the Art of Biomethane Production: Recent Advancements and Integration of Renewable Energies

et al. 2021

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Anaerobic Digestion (AD) is a well-established process that is becoming increasingly popular, especially as a technology for organic waste treatment; the process produces biogas, which can be upgraded to biomethane, which can be used in the transport sector or injected into the natural gas grid. Considering the sensitivity of Anaerobic Digestion to several process parameters, mathematical modeling and numerical simulations can be useful to improve both design and control of the process. Therefore, several different modeling approaches were presented in the literature, aiming at providing suitable tools for the design and simulation of these systems. The purpose of this study is to analyze the recent advancements in the biomethane production from different points of view. Special attention is paid to the integration of this technology with additional renewable energy sources, such as solar, geothermal and wind, aimed at achieving a fully renewable biomethane production. In this case, auxiliary heat may be provided by solar thermal or geothermal energy, while wind or photovoltaic plants can provide auxiliary electricity. Recent advancements in plants design, biomethane production and mathematical modeling are shown in the paper, and the main challenges that these fields must face with are discussed. Considering the increasing interest of industries, public policy makers and researchers in this field, the efficiency and profitability such hybrid renewable solutions for biomethane production are expected to significantly improve in the next future, provided that suitable subsidies and funding policies are implemented to support their development.

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Biogas Upgrading and Ammonia Recovery from Livestock Manure Digestates in a Combined Electromethanogenic Biocathode—Hydrophobic Membrane System

Cited by 21 publications

References 52 publications

Integration of biogas systems into a carbon zero and hydrogen economy: a review

Integration of biogas systems into a carbon zero and hydrogen economy: a review

Overview on agricultural potentials of biogas slurry (BGS): applications, challenges, and solutions

A Review of the State of the Art of Biomethane Production: Recent Advancements and Integration of Renewable Energies

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