Optimal technology selection for the biogas upgrading to biomethane

Martín-Hernández, Edgar; Guerras, Lidia S.; Martı́n, Mariano

doi:10.1016/j.jclepro.2020.122032

Cited by 48 publications

(16 citation statements)

References 41 publications

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“…After the cleaning stage, biogas can be directly combusted in the microturbine unit for electricity production. 30 Another possibility is to remove the CO2 contained in biogas through a pressure swing adsorption system for producing bio-based CH4, 31 which can be directly fed to the natural gas grid or liquefied to obtain liquified biomethane. 32 An additional configuration is the use of biomethane gas for electricity production in a turbine, which is similar to the direct combustion of biogas but achieving better efficiencies as a result of the removal of CO2.…”

Section: Overview Of Bio-based Waste Treatment Technologiesmentioning

confidence: 99%

Modeling and Analysis of Organic Waste Management Systems in Centralized and Decentralized Supply Chains Using Generalized Disjunctive Programming

Mohammadi

Martín-Hernández

Martı́n

et al. 2021

Ind. Eng. Chem. Res.

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Although the decentralized and centralized strategies are widely known in today's supply chain realm, few studies have investigated their impacts on the bio-based waste management context. This study aims to formulate a multi-echelon structure for evaluating the influence of these supply chain strategies on optimal utilization of the biomass feedstocks. The proposed supply chain models, connecting the economic, social, and environmental aspects, tend to lower the total system costs, reduce the inadvertent effects of transportation and production processes, and respond to dynamic demands. The optimization problem is formulated as a mixed-integer linear programming model using generalized disjunctive programming to select the most robust integrated supply chain strategy. The results indicate that, although the centralized model leads to higher investment and operating costs than the decentralized model, centralization is still a more profitable alternative, as well as being capable of the production of a broader portfolio of bio-based products.

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Section: Overview Of Bio-based Waste Treatment Technologiesmentioning

confidence: 99%

Modeling and Analysis of Organic Waste Management Systems in Centralized and Decentralized Supply Chains Using Generalized Disjunctive Programming

Mohammadi

Martín-Hernández

Martı́n

et al. 2021

Ind. Eng. Chem. Res.

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“…The improvement of biogas upgrading techniques is strictly connected to advantageous economic perspectives, widening the environmental and social benefits of AD [ 12 , 13 ]. Several approaches can be used for removing CO 2 from biogas, such as pressure swing adsorption, scrubbing, cryogenic and membrane separations [ 2 , 14 ]. Among them, membrane separation presents the lowest overall costs, with multistage configurations able to provide methane recovery and purity of 99% and 95–99%, respectively, compared to single-stage configurations [ 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Modelling of autogenerative high-pressure anaerobic digestion in a batch reactor for the production of pressurised biogas

Crescenzo

Marzocchella

Karatza

et al. 2022

Biotechnol Biofuels

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Background Pressurised anaerobic digestion allows the production of biogas with a high content of methane and, at the same time, avoid the energy costs for the biogas upgrading and injection into the distribution grid. The technology carries potential, but the research faces practical constraints by a.o. the capital investment needed in high-pressure reactors and sensors and associated sampling limitations. In this work, the kinetic model of an autogenerative high-pressure anaerobic digestion of acetate, as the representative compound of the aceticlastic methanogenesis route, in batch configuration, is proposed to predict the dynamic performance of pressurised digesters and support future experimental work. The modelling of autogenerative high-pressure anaerobic digestion in batch configuration, which is not extensively studied and simulated in the present literature, was developed, calibrated, and validated by using experimental results available from the literature. Results Under high-pressure conditions, the assessment of the Monod maximum specific uptake rate, the half-saturation constant and the first-order decay rate was carried out, and the values of 5.9 kg COD kg COD−1 d−1, 0.05 kg COD m−3 and 0.02 d−1 were determined, respectively. By using the predicted values, excellent fittings of the final pressure, the CH4 molar fraction and the specific methanogenic yield calculation were obtained. Likewise, the variation in the gas–liquid mass transfer coefficient by several orders of magnitude showed negligible effects on the model predictive values in terms of methane molar fraction of the produced biogas, while the final pressure seemed to be slightly influenced. Conclusions The proposed model allowed to estimate the Monod maximum specific uptake rate for acetate, the half-saturation rate for acetate and the first-order decay rate constant, which were comparable with literature values reported for well-studied methanogens under anaerobic digestion at atmospheric pressure. The methane molar fraction and the final pressure predicted by the model showed different responses towards the variation of the gas–liquid mass transfer coefficient since the former seemed not to be affected by the variation of the gas–liquid mass transfer coefficient; in contrast, the final pressure seemed to be slightly influenced. The proposed approach may also allow to potentially identify the methanogens species able to be predominant at high pressure.

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“…Tao et al [37] carried out an integrated design of multi-stage membrane separation systems with uncertain concentrations and flowrates, proposing three landfill gas purification strategies. Martín-Hernández et al [38] developed a superstructure model integrating amine absorption, pressure swing adsorption and membrane separation to determine the optimal process and operating conditions for biomethane production. However, as yet there was no such approach developed for the separation of hydrolysis solutions in bioethanol production.…”

Section: Introductionmentioning

confidence: 99%

Optimal Design of a Hydrolysis Sugar Membrane Purification System Using a Superstructure-Based Approach

et al. 2021

Processes

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As an alternative to gasoline, bioethanol can be produced from lignocellulosic biomass through hydrolysis using an ionic solution containing zinc chloride (ZnCl2). This method allows for a high yield of glucose from lignocellulose, but entails the removal of ZnCl2 from the hydrolysate using multiple nanofiltration membranes before the fermentation of glucose. This paper presents a mathematical technique for designing such a multistage membrane separation system. The optimization model for the synthesis of membrane networks is based on a superstructure with all feasible interconnections between the membrane units, and consists of mass balances, logical constraints and product specifications. A case study of the separation of a bagasse hydrolysis solution is used to demonstrate the application of the proposed model. Results show that using both types of nanofiltration membranes allows higher ZnCl2 removal ratios at each membrane unit, hence a decrease in the number of membrane units required and a reduction of about 35% in capital cost compared to the cases in which only one membrane type is used. Further analysis is performed to examine the effect of membrane performance on the economics of the separation system.

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Optimal technology selection for the biogas upgrading to biomethane

Cited by 48 publications

References 41 publications

Modeling and Analysis of Organic Waste Management Systems in Centralized and Decentralized Supply Chains Using Generalized Disjunctive Programming

Modeling and Analysis of Organic Waste Management Systems in Centralized and Decentralized Supply Chains Using Generalized Disjunctive Programming

Modelling of autogenerative high-pressure anaerobic digestion in a batch reactor for the production of pressurised biogas

Optimal Design of a Hydrolysis Sugar Membrane Purification System Using a Superstructure-Based Approach

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