Selection of in-situ desulfurizers for chicken manure biogas and prediction of dosage

• Autorzy: Jang H. , Li T. , Stinner W. , Nie H. , Ding J. , Zhou H.
• Języki publikacji: EN

Abstrakty

EN

The hydrogen sulfide (H₂S) in biogas is poisonous and corrosive, so it is usually removed in the early stage of biogas upgrading. Dosing iron compounds directly into the anaerobic fermenter is an in-situ method for rough desulphurization. But it is difficult to estimate the appropriate amount of iron compound to add and overdosing is usually inevitable. Five kinds of iron compounds (FeCl₂, FeCl₃, Fe(OH)₃, Fe₂O₃, and FeSO₄) were applied as in-situ desulfurizers in chicken manure fermentation to reduce H₂S emissions. Biogas yield, CH₄ concentration, and H₂S concentration were examined to evaluate the performance of these desulfurizers. Among these five desulfurizers, FeCl₂, FeCl₃, and Fe(OH)₃ showed better performance; the desulfurization rates were all above 98.5% when the addition was 16 mmol L⁻¹. In order to establish the prediction model of the required amount for in-situ desulfurizer, it is assumed that the dosage of desulfurizer could be simply divided into two parts: one part for consumption of released H₂S, and the other part for guaranteeing a certain desulfurizing level. Under this assumption, the prediction formulas were fitted based on the bottle experiments and applied in a 5 L fermentation system. The required desulfurization levels (H₂S concentration) when adding FeCl₂, FeCl₃, and Fe(OH)₃ were set to 120, 200, and 100 ppmv, respectively. After adding the calculated dosage of the three in-situ desulfurizers, the actual H₂S concentrations were 163.0, 180.3, and 89.4 ppmv, respectively, which were relatively closed to the required desulfurization levels.

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2017
• Tom: 26
• Numer: 1
• Opis fizyczny: p.155-161,fig.,ref.

Twórcy

autor

Jang H.

• State Key Laboratory of Heavy Oil Processing, Beijing Key Laboratory of Biogas Upgrading Utilization Institute of New Energy, China University of Petroleum, Beijing 102249, China

autor

Li T.

• State Key Laboratory of Heavy Oil Processing, Institute of New Energy, Beijing Key Laboratory

autor

Stinner W.

• Biochemical Conversion Department, Deutsches Biomasseforschungszentrum gGmbH (DBFZ), Torgauer Straße 116, 04347 Leipzig, Germany

autor

Nie H.

• State Key Laboratory of Heavy Oil Processing, Beijing Key Laboratory of Biogas Upgrading Utilization Institute of New Energy, China University of Petroleum, Beijing 102249, China

autor

Ding J.

• State Key Laboratory of Heavy Oil Processing, Beijing Key Laboratory of Biogas Upgrading Utilization Institute of New Energy, China University of Petroleum, Beijing 102249, China

autor

Zhou H.

• State Key Laboratory of Heavy Oil Processing, Beijing Key Laboratory of Biogas Upgrading Utilization Institute of New Energy, China University of Petroleum, Beijing 102249, China

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Identyfikatory

DOI

10.15244/pjoes/64909