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© 2019. This work is licensed under https://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

Abstract

[...]due to increasing numbers of industrialized livestock breeding and feeding operations and the consequent increased number of large-scale biogas plants, excess volumes of anaerobic digestate are produced beyond their agricultural assimilation potential [5,6,7]. The proposed use of biochar to concentrate and recycle nutrients from liquid anaerobic digestates can create new markets for the material and could also reduce the land requirement for liquid digestate disposal. [...]coupling anaerobic digestion with biochar based nutrient recovery fits into the concept of a circular economy where maximum value can be achieved from the solid and liquid waste streams [23,24,25]. [...]the macro nutrient (Ca, Mg, Mn, and Na) and heavy metal (Cr, As, Fe, Zn, and Cu) uptake was calculated by multiplying the total dry biomass weight by the individual ion content [46]. The positive increase in SOC and macronutrients upon soil amendment with digestate-enriched biochar materials indicates that coupling anaerobic digestion and pyrolysis could be an important step in improving and maintaining long term fertility [59]. [...]in the present study the increase in SOC also resulted in synergistic benefits such as reduced bulk density and increased plant-availability of Ca, K, P, and Na (see Supplementary Table S2).

Details

Title
Role of Nutrient-Enriched Biochar as a Soil Amendment during Maize Growth: Exploring Practical Alternatives to Recycle Agricultural Residuals and to Reduce Chemical Fertilizer Demand
Author
Kizito, Simon; Luo, Hongzhen; Lu, Jiaxin; Bah, Hamidou; Dong, Renjie; Wu, Shubiao
Publication year
2019
Publication date
2019
Publisher
MDPI AG
e-ISSN
20711050
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2322182833
Copyright
© 2019. This work is licensed under https://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.