Effect of pig manure to grass silage ratio on methane production in batch anaerobic co-digestion of concentrated pig manure and grass silage

Xie, Sihuang; Lawlor, Peadar G.; Frost, J. P.; Hu, Zhenhu; Zhan, Xinmin

doi:10.1016/j.biortech.2011.03.009

Cited by 244 publications

(115 citation statements)

References 30 publications

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“…As the results showed, the average SMY in PM1 (295 mL/g VS-fed) was the highest value compared to those of the other reactors at different OLRs, which suggested that long HRT with low OLR could make substrates degrade completely. PM has been demonstrated to be an excellent substrate for AD in various conditions (Xie et al 2011;Zhang et al 2014b). The SMY of mono-PM digestion in this experiment was lower than the reported 354.7 mL/g VS-fed of Zhang et al (2014a), but similar to that of 300 mL/g VSfed described by Hansen et al (1998).…”

Section: Methodscontrasting

confidence: 46%

Anaerobic Co-digestion of Pig Manure with Dried Maize Straw

et al. 2016

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The anaerobic co-digestion of pig manure (PM) with dried maize straw (DMS) was studied at 35 °C with a volatile solid (VS) ratio (VSPM/VSDMS) of 1:2 in a continuously stirred tank reactor, and the digestions of mono-PM and mono-DMS were evaluated under the same conditions. The organic loading rates (OLRs) of 2, 3, and 4 g VS/L/d were studied and found to correspond to hydraulic retention times (HRTs) of 60, 40, and 30 d, respectively. Under the condition of long HRT and low OLR, PM could be degraded completely. The co-digestion of PM with DMS showed the most stable performance in TAN, whereas TAN in mono-PM increased with the increase of OLR. The specific methane yield (SMY) did not have a linear correlation with OLR, since HRT changed with different OLR. The maximum average SMY in the co-digestion reactor was 272 mL/g VS-fed at an OLR of 3 g VS/L/d and an HRT of 40 d. The SMY in mono-DMS digestion was the lowest and it decreased with the increase of OLR.

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Section: Methodscontrasting

confidence: 46%

Anaerobic Co-digestion of Pig Manure with Dried Maize Straw

et al. 2016

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“…For optimal carbon-to-nitrogen ratio and pH diverse substrates are mixed for best biogas production (Khan and Martin 2016). One of the techniques for the economic sustainable of biogas systems is to improve their biogas production about 50 % by co-digesting the animal manure with more degradable wastes containing high levels of organic matter as long as such organic wastes are reachable in the digester region (Xie et al 2011;Khan and Martin 2015).…”

Section: Introductionmentioning

confidence: 99%

Effects of co-substrate on biogas production from cattle manure: a review

Tufaner

Avşar

2016

Int. J. Environ. Sci. Technol.

109

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This literature review surveys the previous and current researches on the co-digestion of anaerobic processes and examines the synergies effect of co-digestion with cattle manure. Furthermore, this review also pays attention to different operational conditions like operating temperature, organic loading rate (OLR), hydraulic retention time (HRT), chemical oxygen demand (COD) and volatile solid (VS) removal efficiency and biogas or methane production. This review shows that anaerobic mono-digestion of cattle manure usually causing poor performance and stability. Anaerobic studies were generally performed under mesophilic conditions maintained between 35 and 37°C. Organic waste loading rate generally ranges from 1 to 6 g VS-COD L -1 day -1 stable condition in anaerobic digester. Generally, studies show that HRT for co-digestion of fruit-vegetables waste and industrial organic waste appears to exceed 20 days. However, the anaerobic co-digestion process is generally operated at HRT of between 10 and 20 days. VS and COD removal efficiency usually reaches up to 90 % due to codigestion with different type organic waste. Methane-biogas production is generally obtained between 0.1 and 0.65 L CH 4 -biogas g -1 VS.

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“…Ammonium-N concentrations that inhibit methanogenesis vary due to differences in substrates, inocula, environmental conditions (e.g. temperature, pH), and acclimation periods [28]. Based on the corresponding increase in biogas production rates and the average methane yield of 123 ± 15 m 3 per tonnes of dry waste (equal to 95% of the long term biochemical methane potential yield), it is unlikely that ammonium-N caused any significant inhibition in this study.…”

Section: Change In Leachate Ph Cod Vfa and Nh 4 -N Contentmentioning

confidence: 84%