Consistency of biochar properties over time and production scales: A characterisation of standard materials

Mašek, Ondřej; Buss, Wolfram; Roy-Poirier, Audrey; Lowe, W.; Peters, C.; Brownsort, Peter; Mignard, Dimitri; Pritchard, Colin; Sohi, Saran

doi:10.1016/j.jaap.2018.02.020

Cited by 108 publications

(67 citation statements)

References 41 publications

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“…Commercial standardized biochars were purchased from UK Biochar Research Centre. Chosen samples were produced from five different biomasses feedstock (Miscanthus, wheat straw, oil seed rape, rice husk, and mixed softwoods) using a pilot-scale rotary kiln pyrolysis unit [14] setting the highest treatment temperature (HTT) to 550 • C. Pyrolysis parameters and yields are summarized in Table 1 according to the producer data (further info on the feedstock can be found following the link in reference [15]). Two components BFA diglycidyl resin were purchased from CORES (Cores epoxy resin, LPL).…”

Section: Methodsmentioning

confidence: 99%

Influence of Commercial Biochar Fillers on Brittleness/Ductility of Epoxy Resin Composites

et al. 2019

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Production of versatile composites is a very attractive field. Carbon containing epoxy resins are one of the most relevant reinforced plastics used for a wide number of applications. In this research, we studied the influence of five different commercial biochar samples for the selective enhancement of brittleness and ductility of an epoxy based composite. We proved the relationship between biochar morphology and composites mechanical properties with the aid of FT-IR and FE-SEM analysis. We were able to improve the neat resin mechanical properties by doubling its Young’s modulus and ultimate tensile strength using a wheat straw derived material, and to increase its elongation by 40%, we used a Miscanthus derived biochar.

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Section: Methodsmentioning

confidence: 99%

Influence of Commercial Biochar Fillers on Brittleness/Ductility of Epoxy Resin Composites

et al. 2019

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“…Standard biochar material manufactured from rice husk was used (UK Biochar Research Centre, University of Edinburgh; Mašek et al, 2018). The rice husk was sourced from Sri Lanka and produced using the UK Biochar Research Centre Stage III Slow Pyrolysis Unit (rotary kiln pyrolyzer), described in Buss and Mašek (2014), at a highest treatment temperature of 700°C and a residence time in the heated zone of 20 min.…”

Section: Biocharmentioning

confidence: 99%

Biochar Phosphorus Release Is Limited by High pH and Excess Calcium

et al. 2018

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Aside from its use for improving soil properties, biochar is increasingly promoted as a direct nutrient provider for sustainable recycling of waste materials. However, incomplete understanding of the interacting factors that determine P release from biochar may limit the efficiency of P recycling from biochar to soil. In particular, the contrasting pH of biochar and soil need to be considered. In this study, soil‐free biochar (rice [Oryza sativa L.] husk, 700°C) extractions were performed under different pH (4.6–9.9) and extractant conditions to test how solution composition affects biochar P release. When solution pH was in the range of 7.6 to 8.6 and excess Ca was present in the solution or in biochar, P release was low—only 1 to 7% of the total P was released compared with ∼20% under most other conditions. Importantly, we demonstrate that biochar total Ca concentration is closely related to P availability (R2 = 0.76) and could be used to predict biochar P release. The results suggest that for maximum P release, low Ca concentrations in biochar and (soil) solution are needed and/or a pH <7.5 at the soil‐biochar interface. This novel understanding will help engineer sustainable biochar fertilizers optimized for P provision. Core Ideas Phosphorus release from rice husk biochar was investigated. Soil‐free extractions were performed at different pH and solution compositions. The lowest P release occurred at pH 7.6 to 8.6 and in the presence of excess Ca. A conceptual model was developed of biochar P release in different soil conditions. Biochars with Ca <1% and/or pH <7.5 are optimal for maximum P release to soil.

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“…Cosentino et al [281] evaluated the performance of a standardized biochar set that was produced by UK Biochar Research Center [282], considering flexural strength and fracture energy. The authors reported inferior performances compared to those achieved by previous studies [283].…”

Section: Biochar-inorganic-based Compositesmentioning

confidence: 99%

A Review of Non-Soil Biochar Applications

et al. 2020

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Biochar is the solid residue that is recovered after the thermal cracking of biomasses in an oxygen-free atmosphere. Biochar has been used for many years as a soil amendment and in general soil applications. Nonetheless, biochar is far more than a mere soil amendment. In this review, we report all the non-soil applications of biochar including environmental remediation, energy storage, composites, and catalyst production. We provide a general overview of the recent uses of biochar in material science, thus presenting this cheap and waste-derived material as a high value-added and carbonaceous source.

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Consistency of biochar properties over time and production scales: A characterisation of standard materials

Cited by 108 publications

References 41 publications

Influence of Commercial Biochar Fillers on Brittleness/Ductility of Epoxy Resin Composites

Influence of Commercial Biochar Fillers on Brittleness/Ductility of Epoxy Resin Composites

Biochar Phosphorus Release Is Limited by High pH and Excess Calcium

A Review of Non-Soil Biochar Applications

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