Balancing of greenhouse gas emissions and economic efficiency for biogas-production through anaerobic co-fermentation of slurry with organic waste

Wulf, Sebastian; Jäger, Peter; Döhler, Helmut

doi:10.1016/j.agee.2005.08.017

Cited by 48 publications

(35 citation statements)

References 14 publications

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“…For the N, P and K in the digestate, different mineral fertilizer equivalents (MFE 2 ) were considered. Usually for P and K the MFE is equal to 100% while it is lower for N depending on its NH 4 component [87]. Only few studies accounted the credit for digestate considering the real needing of the soil; for example Hamelin et al [53] account a MFE equal 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 12 to 0% for P and K in Danish soils where, due to slurries application for several years, the level of phosphorous and potassium is adequate for cereal cultivation even without digestate application.…”

Section: Figure 1 Around Herementioning

confidence: 99%

Agricultural anaerobic digestion plants: What LCA studies pointed out and what can be done to make them more environmentally sustainable

et al. 2016

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Anaerobic Digestion (AD) has been recognized as a viable solution to produce renewable energy and to reduce global warming especially when secondary feedstock and/or wastes are used. Several LCA studies analysed the environmental performances of biogas production systems. The results of this review highlight that the goal, scope, life cycle impact assessment (LCIA) methodology, feedstocks and geographical regions covered by the studies vary widely. Most studies are based in Europe, several in China and few in South and North America and in Africa. To better highlight how the choices on the feeding mix, the digestate storage, the surplus heat valorisation as well as the plant size can affect the environmental performances of agricultural AD plants four plants have been analyzed in this study. The results suggest that the energy crops production and the operation of anaerobic digesters, including digestate emission from open tanks, are the main contributors to the impacts from biogas electricity. This entails that it is environmentally better to have smaller plants using slurry and waste rather than bigger plants fed with energy crops. Recovering heat waste as well as covering of digestate tank would improve significantly the environmental sustainability of biogas electricity, and particularly the global warming category. We are pleased to enclose the revised version of our original manuscript of our paper entitled "Agricultural anaerobic digestion plants: What LCA studies pointed out and what can be done to make them more environmentally sustainable" which can hopefully be published in Applied Energy.Many thanks to the reviewers for their comments; they helped us to improve the manuscript.We hope that the manuscript in the revised form is appropriate for publication in Applied Energy.On behalf of all the Authors, as corresponding Author, yours sincerely, Cover Letter Title: Agricultural anaerobic digestion plants: What LCA studies pointed out and what can be done to make them more sustainable Dear Editor, we would like to thank you for the reviewers' comments. We are grateful to all the reviewers for devoting their time to review our manuscript. As you can see, we have taken most of them into consideration to modify the paper. We hope that the paper in this current revised version can be accepted for publication. Below, we enclose an explanation of how we have addressed the questions raised. Reviewer #1The manuscript is working on the review of the environmental impacts of biogas production. It includes good results, an interesting methodology, and related to the scope of this Journal. I suggest to accept it after some minor revisions. Thank you for your positive comments and for useful suggestions.The authors should write about the difference between their study and the following research: * Hijazi, O., Munro, S., Zerhusen, B. and Effenberger, M., 2016. Review of life cycle assessment for biogas production in Europe. Renewable and Sustainable Energy Reviews, 54, 1291-300. Done, we specified in the int...

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confidence: 99%

Agricultural anaerobic digestion plants: What LCA studies pointed out and what can be done to make them more environmentally sustainable

et al. 2016

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“…This time for non-legume scpecies is the late winter and spring . Similarly, Wulf et al (2006) used 70% of the digestate in spring and 30% in autumn, while and Nyord et al (2008) split into two and three the applied rate through the vegetation period.…”

Section: Effects Of Digestate On Crop Yieldmentioning

confidence: 99%

Digestate: A New Nutrient Source - Review

Makádi¹,

Tomócsik²,

Orosz³

2012

Biogas

114

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“…Nowadays, biogas production using animal waste or energy crops is attracting much attention as one of the types of sustainable crop production or renewable energy resources (Amon et al, 2006;Wulf et al, 2006;Amon et al, 2007). Anaerobically digested slurry contains not only many nutrients such as ammonium but also some organic acids such as acetic acid, butyric acid and propionic acid (Chantigny et al, 2004).…”

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Suppressive effect of anaerobically digested slurry on the root lesion nematode Pratylenchus penetrans and its potential mechanisms

Min

Sato

Shirakashi³

et al. 2007

Jpn. J. Nematol.

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Balancing of greenhouse gas emissions and economic efficiency for biogas-production through anaerobic co-fermentation of slurry with organic waste

Cited by 48 publications

References 14 publications

Agricultural anaerobic digestion plants: What LCA studies pointed out and what can be done to make them more environmentally sustainable

Agricultural anaerobic digestion plants: What LCA studies pointed out and what can be done to make them more environmentally sustainable

Digestate: A New Nutrient Source - Review

Suppressive effect of anaerobically digested slurry on the root lesion nematode Pratylenchus penetrans and its potential mechanisms

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