The contribution of biogas residues to soil organic matter formation and CO2 emissions in an arable soil

Coban, Halil; Miltner, Anja; Elling, Felix J.; Hinrichs, Kai‐Uwe; Kästner, Matthias

doi:10.1016/j.soilbio.2015.03.023

Cited by 32 publications

(22 citation statements)

References 54 publications

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“…Indeed, these materials are typically applied to recycle nutrients to the soil/crop system and reduce the need for manufactured fertilizer, rather than to improve SOC levels and overall soil quality. In fact, Coban et al (2015) observed that the application of digestate (derived from livestock manures) caused a priming effect resulting in the mineralization of native soil organic matter and concluded that intensive and repeated application of such materials "should be avoided" due to the potential to decrease SOC. However, SOC levels were not (P > 0.05) affected by the short-term (<3 years) application of digestate and livestock slurry in this study.…”

Section: Discussionmentioning

confidence: 99%

Improvements in the Quality of Agricultural Soils Following Organic Material Additions Depend on Both the Quantity and Quality of the Materials Applied

Nicholson

Rollett

Taylor³

et al. 2018

Front. Sustain. Food Syst.

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It is widely recognized that the application of organic materials is one of the most effective ways of increasing soil organic carbon (SOC) levels and improving soil quality, but do all forms of organic matter input have the same impact on soil properties A network of seven experimental sites investigated the effects on soil quality of annual applications over a minimum of 3 years of compost and food-based digestate in comparison with farmyard manure (FYM) and livestock slurry. Two of the sites were existing experimental platforms which had previously benefitted from applications of FYM, livestock slurry and green compost allowing the effects of longer-term applications (6-17 years) on soil properties to be quantified. The application of all organic materials increased soil nutrient supply (total nitrogen, extractable phosphorus, potassium, and magnesium) within a short timescale (<3 years), whereas SOC contents were only increased following the long-term (9 years or more) application of bulky organic materials (compost and FYM). SOC increases were associated with improvements in soil biological (microbial biomass) and physical properties (reduced bulk density), although the level of improvement was dependent on the quality of the organic material applied (as determined by its lignin content, an indicator of resistance to decomposition). Applications of low dry matter content materials (digestates and livestock slurries) had a limited capacity to improve soil biological and physical functioning, due to their low organic matter loading.

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Section: Discussionmentioning

confidence: 99%

Improvements in the Quality of Agricultural Soils Following Organic Material Additions Depend on Both the Quantity and Quality of the Materials Applied

Nicholson

Rollett

Taylor³

et al. 2018

Front. Sustain. Food Syst.

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“…Coban et al . () showed that mineralization of SOM was enhanced by the application of BGRs, indicating an increase in overall heterotrophic respiration.…”

Section: Introductionmentioning

confidence: 97%

“…biogas residues (BGRs)) are used as a soil conditioner. A recent study investigated the mass balance of carbon (C) derived from biogas residues applied to arable soil, and indicated a contribution to living biomass or non-living SOM or both (Coban et al, 2015a). However, degradation of SOM was also stimulated by BGR amendments, which indicated its potential lack of sustainability (Coban et al, 2015a).…”

Section: Introductionmentioning

confidence: 99%

Effects of compost, biochar and manure on carbon mineralization of biogas residues applied to soil

Coban

Miltner

Centler

et al. 2016

European J Soil Science

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Summary Biogas residues contain microbial biomass, which contributes to the formation of soil organic matter. Whether the potential of biogas residues to increase soil organic matter can be enhanced by co‐application with compost, biochar or manure is unknown, however. The aim of this paper is to evaluate the effects of co‐amendment on the mineralization of biogas residues, carbon dioxide emissions and the carbon flow within the microbial food web. We determined the fate of 13C‐labelled microbial biomass present in biogas residues applied together with compost, biochar and manure to soil, by analysing CO2 and biomarker phospholipid fatty acids. Although the rate of mineralization constant of the slowly degrading carbon pool was not affected by co‐amendments, co‐amendment with manure resulted in a larger rate of mineralization constant of the readily degrading carbon pool of biogas residues. The incorporation of carbon was mainly to Gram‐negative biomass and was the smallest with manure co‐amendment, which indicated differences in bioavailability of the carbon source.

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“…Some researchers utilized biogas slurry as a superior organic fertilizer in arable crop production [7]. Biogas slurry offers many advantages including (1) promoting the granular structure formation of soil and improving the physical and chemical properties of soil [8,9]; (2) providing nitrogen, phosphorus, potassium, amino acid, auxin, and ionmicroelement for crop's sprouting and growing [10]. Moreover, biogas slurry has higher inorganic nitrogen content and the mineralization rate than biogas residue (solid remains of digestate after solid-liquid separation) [11].…”

Section: Introductionmentioning

confidence: 99%

Effects of Three Biochars as Adsorbents on Soils Adsorbing Ammonium Nitrogen in Biogas Slurry

Wang

et al. 2017

Journal of Chemistry

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The increasing concern of biogas slurry disposal and nitrogen loss in soils has brought back the interest in using biochar as an adsorbent of biogas slurry in soils. Three types of biochars, commercial activated carbon, pyrolysis productions derived from rice husk, and nut shell, were added as adsorbents in two types of soils (sandy and loamy) at solid weight ratio of 5%, 10%, 15%, and 20% to investigate the effects of biochars on soils adsorbing ammonium nitrogen (NH 4 + -N) in biogas slurry using oscillation method. There was no difference of NH 4 + -N adsorbability for sand soil and loamy soil. The NH 4 + -N adsorption capacity of soils increased as the additive biochars increased from 0 to 20%. The smaller particle size of biochars led to the shorter stable adsorption time and the better NH 4 + -N adsorption capacity. Commercial activated carbon showed the best NH 4 + -N adsorption capacity in biogas slurry, followed by the nut shell carbon. The rice husk carbon was the worst. The results in this study provide a feasible and cost-effective assessment method of biochars for increasing the NH 4 + -N adsorption capacity of soils in biogas slurry, as well as good insight into effects of different biochars on improving NH 4 + -N adsorption capacity of soils.

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The contribution of biogas residues to soil organic matter formation and CO2 emissions in an arable soil

Cited by 32 publications

References 54 publications

Improvements in the Quality of Agricultural Soils Following Organic Material Additions Depend on Both the Quantity and Quality of the Materials Applied

Improvements in the Quality of Agricultural Soils Following Organic Material Additions Depend on Both the Quantity and Quality of the Materials Applied

Effects of compost, biochar and manure on carbon mineralization of biogas residues applied to soil

Effects of Three Biochars as Adsorbents on Soils Adsorbing Ammonium Nitrogen in Biogas Slurry

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