Hydrogen sulphide removal from biogas by zeolite adsorptionPart I. GCMC molecular simulations

Cosoli, Paolo; Ferrone, Marco; Pricl, Sabrina; Fermeglia, Maurizio

doi:10.1016/j.cej.2008.07.034

Cited by 136 publications

(75 citation statements)

References 32 publications

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“…Zeolite-based materials also possess high H 2 S breakthrough capacities and therefore present an alternative strategy for H 2 S removal (e.g., ion-exchanged zeolites, CuO or ZnO-modified zeolites, etc. ; Cosoli et al, 2008;Micoli et al, 2014), mesoporous silica (Belmabkhout et al, 2009) and iron oxide/hydroxide systems (so-called iron sponges) (Abatzoglou and Boivin, 2009). The basicity of these materials induces acid-base or redox reactions that result in efficient removal of H 2 S, for example: (depending on O 2 availability) generating readily separated byproducts that could be used for other industrial processes.…”

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.

106

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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.

106

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“…H 2 S also occurs in volcanic and natural gases. Several processes are available for the treatment of hydrogen sulfide, including absorption [1][2][3][4][5], adsorption [6][7][8][9][10][11], and membrane separation [12][13][14][15][16]. These methods generally entail high energy, chemical and disposal costs.…”

Section: Introductionmentioning

confidence: 99%

Removal of hydrogen sulfide in air using cellular concrete waste: Biotic and abiotic filtrations

Jaber

Couvert

Amrane

et al. 2017

Chemical Engineering Journal

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Please cite this article as: M. Ben Jaber, A. Couvert, A. Amrane, P.L. Cloirec, E. Dumont, Removal of hydrogen sulfide in air using cellular concrete waste: biotic and abiotic filtrations, Chemical Engineering Journal (2017), doi: http://dx.doi.org/10. 1016/j.cej.2017.03.014 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. AbstractThe objective of this study was to investigate the removal of hydrogen sulfide (H 2 S) present in air using cellular concrete waste as the packing material. Air filtration was performed under biotic and abiotic conditions. Experiments were carried out in a laboratory-scale PVC column (internal diameter of 300 mm) filled with a volume of 70 L of cellular concrete (1 m height).The polluted air flow was generated at 4 m 3 h -1 corresponding to an Empty Bed Residence Time (EBRT) of 63 s. In dry conditions without biomass (abiotic conditions), cellular concrete can be an effective medium for the treatment of H 2 S in air. For an H 2 S concentration of 100 ppmv, the removal efficiency was around 70 % (Elimination Capacity (EC) of 5.6 g m -3 h -1 ). This finding can be explained by the physicochemical reactions that can take place between H 2 S and the cellular concrete components (mainly CaO, CaCO 3 and Fe 2 O 3 ).However, interactions between cellular concrete and H 2 S are not yet fully understood. Used as a packing material for H 2 S biofiltration (biotic conditions), cellular concrete waste efficiently 2 treated (Removal Efficiency = 100 %) high concentrations of H 2 S (up to 133 ppmv corresponding to an EC of up to 10.5 g m -3 h -1 ). Physicochemical and biological mechanisms explaining H 2 S removal seem to occur simultaneously in the biofilter. At an EBRT of 63 s, the maximal elimination capacity (EC max ) was 17.8 g m -3 h -1 . A packed bed of cellular concrete also presents a satisfactory mechanical behavior with low pressure drops.

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“…The idea of using natural product such as zeolite as desulfurizer was introduced by Cosoli et al [5]. Zeolite is a mining product with reasonable price but not available every where.…”

Section: Introductionmentioning

confidence: 99%

Biogas Desulfurizer Made from Waste of Aluminium Chips

Nindhia¹,

WayanSurata²,

Adi³

et al. 2014

IJMMM

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Abstract-Hydrogen sulfide (H 2 S) is found in the biogas as an impurities. The existence of hydrogen sulfide in the biogas resulting problematic for using biogas as a fuel since it will increase the acidity of the lubricant of the engine. Hydrogen sulfide is a corrosive gas that can corrodes the steel tank of biogas container. Other serious problem concerning H 2 S is, this type of gas is a harmful gas that should be avoided. This work introduces a technique to utilize aluminium chips waste that is obtained from manufacturing process. To make aluminium chips reactive to H 2 S, the ion Al 3+ should be released from the aluminium by galvanic coupling with iron in salt water. The iron uses for this purpose also come from the iron chips waste. It is found the more addition of iron chips in to the mixture of aluminium + iron the more reactive the aluminium as desulfurizer Index Terms-Aluminium, desulfurizer, galvanic coupling, hydrogen sulfide. I. INTRODUCTIONHydrogen sulfide (H 2 S) has to be removed before combusted to prevent environmental problem caused by emission of sulfur (S) compound, for reason of toxicity, and corrosion on equipment [1]. Foam formation was introduce in the early beginning for the removal of H 2 S from the gas stream [1], but this technique was not attract the customer because the reason of simplicity, especially for the consumer from developing country.A few years later Lee et al.[2] introduce method of sulfate-resistant Acidithiobacillysthiooxidans AZ11 for removal of H 2 S. This technique also not much attract attention from the consumer because it was not easy to handle the bacteria for this process.An interesting idea by utilizing waste was introduced by Yuan and Bandosz [3]. The waste that was used come from sewage sludge and metal sludge of various compositions. But this technique becomes not appropriate from economic point of view because the sludge should be pyrolysed at quite high temperature. Similar with work of Yuan and Bandosz [3], which is using waste for desulfurizer, Seredych [4] also using wastes i.e. fly ash for desulfurizer. But this technique become not popular since pyrolyses process is needed at higher temperature (950 o C).The idea of using natural product such as zeolite as Manuscript received November 5, 2013; revise February 17, 2014. The authors are with the Department of Mechanical Engineering, Engineering Faculty, Udayana University Jimbaran, Bali, Indonesia, 80361 (e-mail: nindhia@yahoo.com).desulfurizer was introduced by Cosoli et al. [5]. Zeolite is a mining product with reasonable price but not available every where. Only in certain region we can find zeolite sources from mining. Cost to delivery zeolite from mining location to the place of biogas installation could be another problem.Recently the research on promoting metal chips waste as desulfurizer was conducted by Nindhia et al. [6]. By utilizing steel chips waste, the regenerative type of desulfurizer can be developed. This type of desulfurizer can be use repetitively and already successful as a compon...

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Hydrogen sulphide removal from biogas by zeolite adsorptionPart I. GCMC molecular simulations

Cited by 136 publications

References 32 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

Removal of hydrogen sulfide in air using cellular concrete waste: Biotic and abiotic filtrations

Biogas Desulfurizer Made from Waste of Aluminium Chips

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