Animal Manure Residue Upgrading and Nutrient Recovery in Biofertilisers

Jensen, Lars Stoumann

doi:10.1002/9781118676677.ch14

Cited by 8 publications

(4 citation statements)

References 70 publications

(67 reference statements)

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“…Its C sequestration (Lehmann and Joseph, 2015) and greenhouse gas (GHG) emission reduction (Cayuela et al, 2014;Ameloot et al, 2013aAmeloot et al, , 2016Smith, 2016) help mitigate climate change and potential adverse impacts to ecosystems from agriculture (Barrow, 2012;Liu et al, 2014). Additionally, it (Jensen 2013a(Jensen , 2013b represents an alternative means by which to contain water and atmospheric pollution ascribed to large volumes of crop and animal wastes (Jeffery et al, 2015b). As a soil amendment (Lehmann et al, 2011Windeatt et al, 2014), BC has received increased interest due to its role in enhancing nutrient-and water-use efficiencies (Van Zwieten et al, 2010;Singh et al, 2010;Barrow, 2012).…”

Section: Introductionmentioning

confidence: 99%

Crop response to soils amended with biochar: expected benefits and unintended risks

et al. 2017

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Biochar (BC) from biomass waste pyrolysis has been widely studied due to its ability to increase carbon sequestration, reduce greenhouse gas emissions, and enhance both crop growth and soil quality. This review summarises the current knowledge of BC production, characterisation, and types, with a focus on its positive effects on crop yield and soil properties vs the unintended risks associated with these effects. Biochar-amended soils enhance crop growth and yield via several mechanisms: expanded plant nutrient and water availability through increased use efficiencies, improved soil quality, and suppression of soil and plant diseases. Yield response to BC has been shown to be more evident in acidic and sandy soils than in alkaline and fine-textured soils. Biochar composition and properties vary considerably with feedstock and pyrolysis conditions so much that its concentrations of toxic compounds and heavy metals can negatively impact crop and soil health. Consequently, more small-scale and greenhouse-sited studies are in process to investigate the role of BC/soil/crop types on crop growth, and the mechanisms by which they influence crop yield. Similarly, a need exists for long-term, field-scale studies on the effects (beneficial and harmful) of BC amendment on soil health and crop yields, so that production guidelines and quality standards may be developed for BCs derived from a range of feedstocks.

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Section: Introductionmentioning

confidence: 99%

Crop response to soils amended with biochar: expected benefits and unintended risks

et al. 2017

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“…During drying, as much as 20% of the manure-N was reported to volatilize, typically as NH 3 [29]. Also, C loss during drying was reported to be around 4%.…”

Section: Dryingmentioning

confidence: 99%

Consequential Life Cycle Assessment of Swine Manure Management within a Thermal Gasification Scenario

2019

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Sustainable swine manure management is critical to reducing adverse environmental impacts on surrounding ecosystems, particularly in regions of intensive production. Conventional swine manure management practices contribute to agricultural greenhouse gas (GHG) emissions and aquatic eutrophication. There is a lack of full-scale research of the thermochemical conversion of solid-separated swine manure. This study utilizes a consequential life cycle assessment (CLCA) to investigate the environmental impacts of the thermal gasification of swine manure solids as a manure management strategy. CLCA is a modeling tool for a comprehensive estimation of the environmental impacts attributable to a production system. The present study evaluates merely the gasification scenario as it includes manure drying, syngas production, and biochar field application. The assessment revealed that liquid storage of manure had the highest contribution of 57.5% to GHG emissions for the entire proposed manure management scenario. Solid-liquid separation decreased GHG emissions from the manure liquid fraction. Swine manure solids separation, drying, and gasification resulted in a net energy expenditure of 12.3 MJ for each functional unit (treatment of 1 metric ton of manure slurry). Land application of manure slurry mixed with biochar residue could potentially be credited with 5.9 kg CO 2 -eq in avoided GHG emissions, and 135 MJ of avoided fossil fuel energy. Manure drying had the highest share of fossil fuel energy use. Increasing thermochemical conversion efficiency was shown to decrease overall energy use significantly. Improvements in drying technology efficiency, or the use of solar or waste-heat streams as energy sources, can significantly improve the potential environmental impacts of manure solids gasification.

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“…On the other hand, separated solids can be further stabilised through composting to be used as a soil amendment (Teglia et al, 2011b) or can be thermally dried (Pantelopoulos et al, 2016). Combustion/thermal gasification, ash extraction and pyrolysis can also be applied for further treatment of solid digestates (Jensen, 2013b;Christel et al, 2014). Increasing nutrient concentrations can be achieved by NH3 stripping, or through membrane technologies such as ultrafiltration or reverse osmosis.…”

Section: Treatment Of Digestatementioning

confidence: 99%

“…Mechanical separation is usually the first treatment step for manure, digestate from anaerobic digestion of manure and other biowastes (Jensen, 2013b).…”

Section: Treatment Of Digestatementioning

confidence: 99%

Recovery of nutrients from biogas digestate with biochar and clinoptilolite

Kocaturk

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Animal Manure Residue Upgrading and Nutrient Recovery in Biofertilisers

Cited by 8 publications

References 70 publications

Crop response to soils amended with biochar: expected benefits and unintended risks

Crop response to soils amended with biochar: expected benefits and unintended risks

Consequential Life Cycle Assessment of Swine Manure Management within a Thermal Gasification Scenario

Recovery of nutrients from biogas digestate with biochar and clinoptilolite

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