Economic analysis of microaerobic removal of H2S from biogas in full-scale sludge digesters

Díaz, Israel; Ramos, Isaac Corro; Fdz-Polanco, M.

doi:10.1016/j.biortech.2015.05.048

Cited by 44 publications

(18 citation statements)

References 20 publications

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“…Similarly, Fernandez et al (2013) tested a biotrickling filter packed with polypropylene Pall rings to remove H 2 S from biogas under anoxic conditions and achieved 99% sulfur removal for H 2 S inlet loads lower than 120 gSm −3 h −1 . Ramos et al (2014a,b) and Diaz et al (2015) studied microaerobic conditions in order to control H 2 S content and showed that the application of such conditions was an efficient method for H 2 S control and removal from biogas. Moreover, Jeníček et al (2017) confirmed the effectiveness of microaeration as a biochemical method of sulfide oxidation to elemental sulfur, obtaining H 2 S removal efficiency more than 90% in most cases.…”

Section: H 2 S Removalmentioning

confidence: 99%

Biogas Management: Advanced Utilization for Production of Renewable Energy and Added-value Chemicals

Yentekakis

Goula

2017

Front. Environ. Sci.

102

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Biogas is widely available as a product of anaerobic digestion of urban, industrial, animal and agricultural wastes. Its indigenous local-base production offers the promise of a dispersed renewable energy source that can significantly contribute to regional economic growth. Biogas composition typically consists of 35-75% methane, 25-65% carbon dioxide, 1-5% hydrogen along with minor quantities of water vapor, ammonia, hydrogen sulfide and halides. Current utilization for heating and lighting is inefficient and polluting, and, in the case of poor quality biogas (CH 4 /CO 2 < 1), exacerbated by detrimental venting to the atmosphere. Accordingly, innovative and efficient strategies for improving the management and utilization of biogas for the production of sustainable electrical power or high added-value chemicals are highly desirable. Utilization is the focus of the present review in which the scientific and technological basis underlying alternative routes to the efficient and eco-friendly exploitation of biogas are described and discussed. After concisely reviewing state-of-the-art purification and upgrading methods, in-depth consideration is given to the exploitation of biogas in the renewable energy, liquid fuels, transport and chemicals sectors along with an account of potential impediments to further progress.Keywords: biogas, upgrading, purification, utilization, SOFC, ethylene, reforming, siloxanes BIOGAS Efficient management of ever-increasing amounts of municipal, industrial and agricultural wastes in order to minimize their environmental impact is an urgent necessity. Biological treatment of wastes, which can be carried out either aerobically or anaerobically, is widely applied in this area. Due to their several advantages the anaerobic processes are to be preferred because they require considerably smaller installations, produce less sludge, operate at lower temperatures and are suited to periodic operation. Much more importantly, they generate biogas, which is an attractive potential source of renewable energy and/or added-value chemicals due to its high content of methane and CO 2 . Anaerobic digestion (AD) can proceed over a wide temperature range, from phychrophilic (ca. 10-20 • C) and mesophilic (ca. 20-45 • C) up to thermophilic (ca. 45-65 • C) and hyperthermophilic (ca. ∼70 • C) levels, by means of cooperation between anaerobes and facultative anaerobe microorganisms, which successively promote a sequence of hydrolysis-acidogenesis,

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Section: H 2 S Removalmentioning

confidence: 99%

Biogas Management: Advanced Utilization for Production of Renewable Energy and Added-value Chemicals

Yentekakis

Goula

2017

Front. Environ. Sci.

102

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“…where n is the plant lifespan assumed to be 10 years and j is the discount rate assumed to be 10%. The calculation of the annualised capital cost estimate for a different capacity, v in m 3 , from the annualised capital cost for the reference gas capacity, vref in m 3 , was achieved as follows [32];…”

Section: Annual Operating and Annualised Capital Cost Per Unit Volumementioning

confidence: 99%

“…where C i is the annualised capital cost for a desulphurisation plant with a capacity of v, in m 3 , C i,vref is the annualised capital cost for a plant with a reference capacity vref, in m 3 , and k is the scaling factor specified as 0.7 [32]. All estimates in Equation (16) are for the year i.…”

Section: Annual Operating and Annualised Capital Cost Per Unit Volumementioning

confidence: 99%

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Desulphurisation of Biogas: A Systematic Qualitative and Economic-Based Quantitative Review of Alternative Strategies

Okoro

Sun

2019

ChemEngineering

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The desulphurisation of biogas for hydrogen sulphide (H2S) removal constitutes a significant challenge in the area of biogas research. This is because the retention of H2S in biogas presents negative consequences on human health and equipment durability. The negative impacts are reflective of the potentially fatal and corrosive consequences reported when biogas containing H2S is inhaled and employed as a boiler biofuel, respectively. Recognising the importance of producing H2S-free biogas, this paper explores the current state of research in the area of desulphurisation of biogas. In the present paper, physical–chemical, biological, in-situ, and post-biogas desulphurisation strategies were extensively reviewed as the basis for providing a qualitative comparison of the strategies. Additionally, a review of the costing data combined with an analysis of the inherent data uncertainties due underlying estimation assumptions have also been undertaken to provide a basis for quantitative comparison of the desulphurisation strategies. It is anticipated that the combination of the qualitative and quantitative comparison approaches employed in assessing the desulphurisation strategies reviewed in the present paper will aid in future decisions involving the selection of the preferred biogas desulphurisation strategy to satisfy specific economic and performance-related targets.

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“…Recently, the application of biological micro aeration to the conversion of H 2 S to elemental sulfur is predominant and this system completely harmless to the environment (Krayzelova et al, 2014;Ramos et al, 2014;Díaz et al, 2015;Jeniček et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Biological removal of gaseous sulfur dioxide through the reduction to hydrogen sulfide by means of Desulfovibrio desulfuricans

Papi

Montalvo

Papic

et al. 2018

International Biodeterioration & Biodegradation

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The aim of this paper was to study the biological removal of gaseous sulfur dioxide by using the sulfate reducing bacteria Desulfovibrio desulfuricans. In order to achieve contact between the sulfur dioxide and the bacteria, laboratory-scale bioreactors were designed to generate the sulfur dioxide inside of them through a chemical reaction. The bio-reduction occurred by solubilization in the liquid phase of the sulfur dioxide of the gaseous phase, which produced sulfite ions which were used as the final acceptor of electrons by the bacteria suspended in the liquid phase and reduced to sulfide. To evaluate the biological reduction, three kinetics (in triplicate) were taken in batch mode with loads of 15, 20 and 25 m-moles of SO 2 generated in the gas phase per liter of culture medium in the liquid phase. Lactate was used as substrate (electron donor) and carbon source. The experimental results showed a 100% SO 2 reduction for all the evaluated loads. The tests lasted 24, 72 and 192 hours with lower, intermediate and higher loads, respectively. The total sulfide (S 2-) produced varied between 75 and 126 mg for the tests with lower and higher load, respectively. These amounts were composed of a fraction in the aqueous phase (46 and 85 mg) and another in the gas phase (29 and 41 mg). These values corresponded to 287 and 533 mg of S 2-/L in the liquid phase and 1.9x10 8 and 2.7x10 8 µg H 2 S/m 3 in the gas phase. The mass ratio between product formation (sulfide) and electron donor consumption (expressed in COD) ranged from 81% (higher load) to 90% (lower load) of the theoretical value (0.67 mg of sulfide produced per mg of COD consumed).

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Economic analysis of microaerobic removal of H2S from biogas in full-scale sludge digesters

Cited by 44 publications

References 20 publications

Biogas Management: Advanced Utilization for Production of Renewable Energy and Added-value Chemicals

Biogas Management: Advanced Utilization for Production of Renewable Energy and Added-value Chemicals

Desulphurisation of Biogas: A Systematic Qualitative and Economic-Based Quantitative Review of Alternative Strategies

Biological removal of gaseous sulfur dioxide through the reduction to hydrogen sulfide by means of Desulfovibrio desulfuricans

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