Sulphur fate and anaerobic biodegradation potential during co-digestion of seaweed biomass (Ulva sp.) with pig slurry

Peu, Pascal; Sassi, Jean-François; Girault, Romain; Picard, S.; Saint-Cast, Patricia; Béline, Fabrice; Dabert, Patrick

doi:10.1016/j.biortech.2011.08.096

Cited by 83 publications

(44 citation statements)

References 24 publications

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“…as substrate may have its limitations: The relatively low biodegradability of the algae carbohydrates causes the actual methane yield to be below the potential maximum, and also the seasonality in the seaweed production posing a barrier to sustain a continuous digestion, are mentioned as obstacles to be considered if U. lactuca are to be utilized for energy production by AD (Habig et al 1984;Briand and Morand 1997;Bruhn et al 2011). Another obstacle is the high sulfur content in Ulva sp., which leads to a high proportion of H 2 S in the biogas, making it unsuitable for energy recovery without treatment (Peu et al 2011;Briand and Morand, 1997).…”

Section: Discussionmentioning

confidence: 99%

Cultivation of Ulva lactuca with manure for simultaneous bioremediation and biomass production

et al. 2011

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Section: Discussionmentioning

confidence: 99%

Cultivation of Ulva lactuca with manure for simultaneous bioremediation and biomass production

et al. 2011

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“…These include dimethyl sulphide, carbon disulphide, mercaptans, etc. Secondly, total sulphur determination may have been biased by the high total dissolved sulphide content, which could have volatilized during the drying procedure before elemental analysis [50].…”

Section: Sulfur Balancementioning

confidence: 99%

The Influence of Micro-Oxygen Addition on Desulfurization Performance and Microbial Communities during Waste-Activated Sludge Digestion in a Rusty Scrap Iron-Loaded Anaerobic Digester

Ruan

Cao

et al. 2017

Energies

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Abstract:In this study, micro-oxygen was integrated into a rusty scrap iron (RSI)-loaded anaerobic digester. Under an optimal RSI dosage of 20 g/L, increasing O 2 levels were added stepwise in seven stages in a semi-continuous experiment. Results showed the average methane yield was 306 mL/g COD (chemical oxygen demand), and the hydrogen sulphide (H 2 S) concentration was 1933 ppmv with RSI addition. O 2 addition induced the microbial oxidation of sulphide by stimulating sulfur-oxidizing bacteria and chemical corrosion of iron, which promoted the generation of FeS and Fe 2 S 3 . In the 6th phase of the semi-continuous test, deep desulfurization was achieved without negatively impacting system performance. Average methane yield was 301.1 mL/g COD, and H 2 S concentration was 75 ppmv. Sulfur mass balance was described, with 84.0%, 11.90% and 0.21% of sulfur present in solid, liquid and gaseous phases, respectively. The Polymerase Chain Reaction-Denaturing Gradient Gel Electrophoresis (PCR-DGGE) analysis revealed that RSI addition could enrich the diversity of hydrogenotrophic methanogens and iron-reducing bacteria to benefit methanogenesis and organic mineralization, and impoverish the methanotroph (Methylocella silvestris) to reduce the consumption of methane. Micro-oxygen supplementation could enhance the diversity of iron-oxidizing bacteria arising from the improvement of Fe(II) release rate and enrich the sulphur-oxidising bacteria to achieved desulfurization. These results demonstrated that RSI addition in combination with micro-oxygenation represents a promising method for simultaneously controlling biogas H 2 S concentration and improving digestion performance.

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“…Continuous co-digestion of Ulva sp. with pig or dairy slurry, respectively, was tested by Peu et al (2011) andSarker (2013). However, these studies did not focus on optimisation of mixtures of Ulva with co-substrates or the effect of varying the organic loading rates, which are essential parameters for continuous co-digestion.…”

Section: Biomethane Production From Green Seaweedmentioning

confidence: 99%

“…H 2 S is toxic and results in increased corrosion of equipment in biogas plants. High levels of dissolved H 2 S can also act as an inhibitor to microorganisms of the AD process (Peu et al, 2011). Potential H 2 S concentrations in biogas produced from a particular substrate can be forecasted by examining the carbon to sulphur ratio (C:S).…”

Section: Biomethane Production From Green Seaweedmentioning

confidence: 99%

Investigation of the optimal percentage of green seaweed that may be co-digested with dairy slurry to produce gaseous biofuel

Allen

Wall

Herrmann

et al. 2014

Bioresource Technology

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Sulphur fate and anaerobic biodegradation potential during co-digestion of seaweed biomass (Ulva sp.) with pig slurry

Cited by 83 publications

References 24 publications

Cultivation of Ulva lactuca with manure for simultaneous bioremediation and biomass production

Cultivation of Ulva lactuca with manure for simultaneous bioremediation and biomass production

The Influence of Micro-Oxygen Addition on Desulfurization Performance and Microbial Communities during Waste-Activated Sludge Digestion in a Rusty Scrap Iron-Loaded Anaerobic Digester

Investigation of the optimal percentage of green seaweed that may be co-digested with dairy slurry to produce gaseous biofuel

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