Horse manure as feedstock for anaerobic digestion

Hadin, Åsa; Eriksson, Ola

doi:10.1016/j.wasman.2016.06.023

Cited by 47 publications

(41 citation statements)

References 37 publications

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“…In horse keeping, different beddings are used and the impact on anaerobic digestion from different beddings was investigated in a previous study [2]. Two of the most commonly used beddings are wood shavings or woodchips, of which the latter has been chosen for this study, see Table 1 for the main characteristics.…”

Section: System Boundariesmentioning

confidence: 99%

“…Previous studies [2] suggest solid state anaerobic digestion as suitable for treatment of horse manure due to its high share of total solids (TS). This method is however not included due to a lack of, or poor process data on full-scale plants using horse manure.…”

Section: Selected Technologiesmentioning

confidence: 99%

“…Previous reviews [1,2] of horse keeping and horse manure as a feedstock for anaerobic digestion illustrate both the benefits and disadvantages of current management practices and the use of anaerobic digestion. However, horse manure management can be turned from a waste management problem to a renewable energy resource.…”

Section: Introductionmentioning

confidence: 99%

“…Fibrous material such as spent straw or wood shavings creates scum layers that are detrimental to gas generation [9,10]. According to previous research, dry fermentation (solid state anaerobic digestion) may be more convenient than wet digestion for lignocellulosic material [11], but so far fairly little is known about how horse manure performs in full-scale dry fermentation [2].…”

Section: Introductionmentioning

confidence: 99%

“…Mixing horse manure with other fuels and pre-drying are both methods for improving horse manure fuel properties [12]. Based on previous literature findings [1,2], research describing the environmental impact from management and utilization of horse manure from a system perspective is lacking. The purpose of this study is to calculate and compare the environmental impact from different treatment options for horse manure using life cycle assessment (LCA).…”

Section: Introductionmentioning

confidence: 99%

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Life Cycle Assessment of Horse Manure Treatment

et al. 2016

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Horse manure consists of feces, urine, and varying amounts of various bedding materials. The management of horse manure causes environmental problems when emissions occur during the decomposition of organic material, in addition to nutrients not being recycled. The interest in horse manure undergoing anaerobic digestion and thereby producing biogas has increased with an increasing interest in biogas as a renewable fuel. This study aims to highlight the environmental impact of different treatment options for horse manure from a system perspective. The treatment methods investigated are: (1) unmanaged composting; (2) managed composting; (3) large-scale incineration in a waste-fired combined heat and power (CHP) plant; (4) drying and small-scale combustion; and (5) liquid anaerobic digestion with thermal pre-treatment. Following significant data uncertainty in the survey, the results are only indicative. No clear conclusions can be drawn regarding any preference in treatment methods, with the exception of their climate impact, for which anaerobic digestion is preferred. The overall conclusion is that more research is needed to ensure the quality of future surveys, thus an overall research effort from horse management to waste management.

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Section: System Boundariesmentioning

confidence: 99%

Section: Selected Technologiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Life Cycle Assessment of Horse Manure Treatment

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Deployment of Biogas Production Technologies in Emerging Countries

Zhen

Lü

Wang

et al. 2020

Green Energy to Sustainability

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Reduction of the environmental footprint of thermo‐alkali pretreatment by reusing black liquor during anaerobic digestion of lignocellulosic biomasses

Peyrelasse

Kaparaju

Lallement³

et al. 2021

Biofuels Bioprod Bioref

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In this study, the effect of thermo‐alkaline pretreatment and recycling of the liquid fraction (black liquor) for successive pretreatment steps on chemical composition and methane yields from horse manure was investigated. At first, horse manure was subjected to alkaline pretreatment at 70 °C for 1 h (8.6 g NaOH/100 g total solids). Pretreated biomass was then separated into solid and liquid fractions (black liquor). In the subsequent stages, black liquor was mixed with 20% (v/v) of fresh NaOH and was reused to pretreat subsequent batches of horse manure (cycles 1–4). Chemical analyses showed that thermo‐alkaline pretreatment was effective in the delignification and solubilization of organic matter and thereby increased the holocellulose (cellulose and hemicelluloses) content in the solid fraction of horse manure. On comparison with untreated horse manure methane yields (225 ± 1 L CH4 kg−1 VSadded), thermo‐alkaline pretreatment improved the methane yields of horse manure by 39% (313 ± 16 L CH4 kg−1 VSadded). However, the effectiveness of black liquor recycling on methane production decreased (from 39 to 12%) with an increase in the number of recycling steps (from 1 to 4). Nevertheless, recycling of black liquor reduced the consumption of NaOH (40%) and water use (60%). Thus, thermo‐alkaline pretreatment with liquor recycling was found to be an effective pretreatment with an economic gain of 2.4 to 10.4 compared to pretreatment without recycling. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd

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Horse manure as feedstock for anaerobic digestion

Cited by 47 publications

References 37 publications

Life Cycle Assessment of Horse Manure Treatment

Life Cycle Assessment of Horse Manure Treatment

Deployment of Biogas Production Technologies in Emerging Countries

Reduction of the environmental footprint of thermo‐alkali pretreatment by reusing black liquor during anaerobic digestion of lignocellulosic biomasses

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