Biofuel Production Byproducts as Soil Amendments

Alotaibi, Khaled D.; Schoenau, J.J.

doi:10.1007/978-94-007-4113-3_4

Cited by 7 publications

(1 citation statement)

References 77 publications

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“…This by-product, characterized by a high recalcitrance to microbial degradation, might be used as a soil amendment and so function to ameliorate anticipated soil organic matter losses (Blanco-Canqui, 2013). To date, a limited number of studies have evaluated the application of biofuel organic solid by-products as soil amendments (Alotaibi & Schoenau, 2012;Galvez et al, 2012) and even fewer compared amendment with crop residues and by-products (Johnson et al, 2007;Cayuela et al, 2010). To our knowledge, there are no published studies utilizing 13 C and 15 N to quantify the fate of the C and N incorporated with these by-products into soil.…”

Section: Introductionmentioning

confidence: 99%

Tracking C and N dynamics and stabilization in soil amended with wheat residue and its corresponding bioethanol by‐product: a ¹³C/¹⁵N study

et al. 2013

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Removing agricultural cellulosic residues from fields for the production of 'second generation biofuels'has the potential to profoundly alter C and N cycling in soil, increasing the risk of soil organic matter depletion and favoring soil-atmosphere gaseous exchanges. However, these negative impacts could potentially be offset by amending the soil with the solid by-product which is generated during bioethanol production. In a 100 days laboratory study, we investigated the fate of C and N after soil amendment with doubly labeled ( 13 C, 15 N) wheat residue (WR) and the corresponding bioethanol by-product (i.e. nonfermentable wheat residue NFWR) with and without extra N addition. Substituting WR with the corresponding amount of recovered bioethanol by-product partially compensated the C losses of full crop residue removal. When the equivalent amount of C was added as WR and NFWR, NFWR-derived C was found in significantly higher proportion in macroaggregates in soil (17.0 vs. 8.9%) after 100 days. Addition of both WR and NFWR reduced soil organic C (SOC) mineralization, i.e. it caused a negative priming effect in soil. However, this pattern was reversed when extra N was added. Both WR and NFWR increased the proportion of soil water-stable macroaggregates from 16% (in control) to 20-24% (in the different treatments). The results suggest that the more recalcitrant compounds derived from bioethanol production may stabilize more strongly and persist within the protected fractions of SOM pools. Our study demonstrates that NFWR, compared with WR application, neither increased N 2 O emissions nor had a negative impact on aggregate formation in the midterm. This demonstrates that NFWR has potential for replenishing SOC stocks.

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Section: Introductionmentioning

confidence: 99%

Tracking C and N dynamics and stabilization in soil amended with wheat residue and its corresponding bioethanol by‐product: a ¹³C/¹⁵N study

et al. 2013

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Biofuel Crops and Soil Quality and Erosion

Chatskikh¹,

Овчинникова²,

Seshadri³

et al. 2013

Biofuel Crop Sustainability

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Possible utilization of ash from meat and bone meal and dried distillers grains gasification as a phosphorus fertilizer: crop growth response and changes in soil chemical properties

2013

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Biofuel Production Byproducts as Soil Amendments

Cited by 7 publications

References 77 publications

Tracking C and N dynamics and stabilization in soil amended with wheat residue and its corresponding bioethanol by‐product: a ¹³C/¹⁵N study

Tracking C and N dynamics and stabilization in soil amended with wheat residue and its corresponding bioethanol by‐product: a ¹³C/¹⁵N study

Biofuel Crops and Soil Quality and Erosion

Possible utilization of ash from meat and bone meal and dried distillers grains gasification as a phosphorus fertilizer: crop growth response and changes in soil chemical properties

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Biofuel Production Byproducts as Soil Amendments

Cited by 7 publications

References 77 publications

Tracking C and N dynamics and stabilization in soil amended with wheat residue and its corresponding bioethanol by‐product: a 13C/15N study

Tracking C and N dynamics and stabilization in soil amended with wheat residue and its corresponding bioethanol by‐product: a 13C/15N study

Biofuel Crops and Soil Quality and Erosion

Possible utilization of ash from meat and bone meal and dried distillers grains gasification as a phosphorus fertilizer: crop growth response and changes in soil chemical properties

Contact Info

Product

Resources

About

Tracking C and N dynamics and stabilization in soil amended with wheat residue and its corresponding bioethanol by‐product: a ¹³C/¹⁵N study

Tracking C and N dynamics and stabilization in soil amended with wheat residue and its corresponding bioethanol by‐product: a ¹³C/¹⁵N study