Biogas production from anaerobic lagoons

Safley, L. M.; Westerman, P. W.

doi:10.1016/0269-7483(88)90033-x

Cited by 72 publications

(37 citation statements)

References 5 publications

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“…As a matter of fact, recovery of biogas in pond systems began appearing in peer-reviewed journals within animal waste operations no later than the 1970s (Safley and Westerman 1988). Recently, authors have studied biogas recovery in stabilization ponds from various types of wastewater.…”

Section: Greenhouse Gas Emissionsmentioning

confidence: 99%

Oxidation pond for municipal wastewater treatment

et al. 2015

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This literature review examines process, design, and cost issues related to using oxidation ponds for wastewater treatment. Many of the topics have applications at either full scale or in isolation for laboratory analysis. Oxidation ponds have many advantages. The oxidation pond treatment process is natural, because it uses microorganisms such as bacteria and algae. This makes the method of treatment cost-effective in terms of its construction, maintenance, and energy requirements. Oxidation ponds are also productive, because it generates effluent that can be used for other applications. Finally, oxidation ponds can be considered a sustainable method for treatment of wastewater.

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Section: Greenhouse Gas Emissionsmentioning

confidence: 99%

Oxidation pond for municipal wastewater treatment

et al. 2015

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“…However, CH 4 production per m 2 slurry surface can be highly variable, since it rather depends on the amount of biomass underneath the surface. Safely and Westermann (1988) for instance measured between 0.05 and 0.50 m 3 CH 4 per m 2 slurry surface per day on the same farm but at two different dates. Ellgaard (2001) reported that typical extents of OM degradation in slurry range between 500 and 600 g kg −1 , while Safely (1989) assumed that almost all of the nonlignin OM is fermented in anaerobic lagoons.…”

Section: Emissionmentioning

confidence: 99%

Effect of the Carbohydrate Composition of feed Concentratates on Methane Emission from dairy Cows and Their Slurry

Hindrichsen¹,

Wettstein²,

Machmüller³

et al. 2005

Environ Monit Assess

105

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Abstract. Dietary carbohydrate effects on methane emission from cows and their slurry were measured on an individual animal basis. Twelve dairy cows were fed three of six diets each (n = 6 per diet) of a forage-to-concentrate ratio of 1:1 (dry matter basis), and designed to cover the cows' requirements. The forages consisted of maize and grass silage, and hay. Variations were exclusively accomplished in the concentrates which were either rich in lignified or non-lignified fiber, pectin, fructan, sugar or starch. To measure methane emission, cows were placed into open-circuit respiration chambers and slurry was stored for 14 weeks in 60-L barrels with slurry being intermittently connected to this system. The enteric and slurry organic matter digestibility and degradation was highest when offering Jerusalem artichoke tubers rich in fructan, while acid-detergent fiber digestibility and degradation were highest in cows and slurries with the soybean hulls diet rich in non-lignified fiber. Multiple regression analysis, based on nutrients either offered or digested, suggested that, when carbohydrate variation is done in concentrate, sugar enhances enteric methanogenesis. The methane emission from the slurry accounted for 16.0 to 21.9% of total system methane emission. Despite a high individual variation, the methane emission from the slurry showed a trend toward lower values, when the diet was characterized by lignified fiber, a diet where enteric methane release also had been lowest. The study disproved the assumption that a lower enteric methanogenesis, associated with a higher excretion of fiber, will inevitably lead to compensatory increases in methane emission during slurry storage.

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“…The aerated products (AS, BS, S) when stored emitted less polluting gases than raw slurry. The CH 4 and CO 2 emitted by the supernatant lagoon were undetected in winter probably helped by the unfavorable temperatures for transforming the residual stable organic matter [6,10].…”

Section: Resultsmentioning

confidence: 99%