A Review of Non-Soil Biochar Applications

Bartoli, Mattia; Giorcelli, Mauro; Jagdale, Pravin; Rovere, Massimo; Tagliaferro, Alberto

doi:10.3390/ma13020261

Cited by 92 publications

(47 citation statements)

References 331 publications

(316 reference statements)

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“…A game-change event could be represented by the use of biochar produced from biomass waste streams through pyrolysis [ 20 ]. As demonstrated by Woolf and co-workers [ 21 ], the implementation of biochar as soil additive contribute to the reduction in green-house gases emissions together, but biochar is far more than a mere soil amendment [ 22 ]. It is a multifunctional platform for material science [ 23 ], as Mohanty and co-workers [ 24 ] clearly demonstrated for the production of performing composites.…”

Section: Introductionmentioning

confidence: 99%

New Concept in Bioderived Composites: Biochar as Toughening Agent for Improving Performances and Durability of Agave-Based Epoxy Biocomposites

et al. 2021

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Biocomposites are increasingly used in the industry for the replacement of synthetic materials, thanks to their good mechanical properties, being lightweight, and having low cost. Unfortunately, in several potential fields of structural application their static strength and fatigue life are not high enough. For this reason, several chemical treatments on the fibers have been proposed in literature, although still without fully satisfactory results. To overcome this drawback, in this study we present a procedure based on the addition of a carbonaceous filler to a green epoxy matrix reinforced by Agave sisalana fibers. Among all carbon-based materials, biochar was selected for its environmental friendliness, along with its ability to improve the mechanical properties of polymers. Different percentages of biochar, 1, 2, and 4 wt %, were finely dispersed into the resin using a mixer and a sonicator, then a compression molding process coupled with an optimized thermomechanical cure process was used to produce a short fiber biocomposite with Vf = 35%. Systematic experimental tests have shown that the presence of biochar, in the amount 2 wt %, has significant effects on the matrix and fiber interphase, and leads to an increase of up to three orders of magnitude in the fatigue life, together with an appreciable improvement in static tensile strength.

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Section: Introductionmentioning

confidence: 99%

New Concept in Bioderived Composites: Biochar as Toughening Agent for Improving Performances and Durability of Agave-Based Epoxy Biocomposites

et al. 2021

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“…Pyrolysis can be carried out in different temperature ranges, heating rates, and residence times of biomass. These conditions promote wide variation in yield [ 9 ] and the properties of the produced biochar [ 10 ]. Even produced from the same material, the pyrolysis conditions can produce biochar with different chemical-physical characteristics and textures [ 11 , 12 ] and can thus change its efficiency or purpose of use.…”

Section: Introductionmentioning

confidence: 99%

Impact of Pyrolysis Temperature on the Properties of Eucalyptus Wood-Derived Biochar

et al. 2020

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Pyrolysis conditions directly influence biochar properties and, consequently, influence the potential use of biochar. In this study, we evaluated the effects of different pyrolysis temperatures (450, 550, 650, 750, 850, and 950 °C) on the hydrogen potential, electrical conductivity, ash content, yield, volatile matter content, elemental analysis, Fourier-transform infrared spectroscopy results, X-ray diffraction results, scanning electron microscopy results, specific surface area, and micropore volume of eucalyptus wood-derived biochar. The degree of linear association between pyrolysis temperatures and biochar properties was examined using the Pearson correlation coefficient. The results showed a positive correlation of the pyrolysis temperature with the hydrogen potential value, electrical conductivity, and elemental carbon. There was a negative correlation of the pyrolysis temperature with the yield, volatile matter content, elemental oxygen, elemental hydrogen, surface area, aromaticity, hydrophilicity, and polarity indexes. The Fourier-transform infrared spectroscopy data indicated an increase in aromaticity and a decrease in the polarity of high-temperature biochar. The increased pyrolysis temperature caused the loss of cellulose and crystalline mineral components, as indicated by X-ray diffraction analysis and scanning electron microscopy images. These results indicated that changing the pyrolysis temperature enables the production of biochar from the same raw material with a wide range of physicochemical properties, which allows its use in various types of agricultural and environmental activities.

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“…Bio-oils are poor biofuel mixtures due to the massive presence of water [16] and a very complex chemicals platform. Conversely, biochar represents a very attractive carbon source for material science [17]. Biochar has been used in many applications but one of the most attractive has been the production of composites [18].…”

Section: Introductionmentioning

confidence: 99%

Development of Pressure-Responsive PolyPropylene and Biochar-Based Materials

Noori¹,

Bartoli

Frache³

et al. 2020

Micromachines

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In this research paper, we reported the synthesis of biochar-based composites using biochar derived from exhausted tea leaves and polypropylene. The resulting materials were deeply characterized investigating mechanical (dynamic mechanical thermal analysis), thermal (thermogravimetrical analysis and differential scanning calorimetry), morphological (field emission scanning microscopy) and electrical properties vs. temperature. Furthermore, electrical conductivity was studied for a wide range of pressures showing an irreversible plastic deformation. An increment of one order of magnitude in the conductivity was observed in the case of 40 wt% biochar loading, reaching a value of 0.2 S/m. The material produced exhibited the properties of an irreversible pressure sensor.

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A Review of Non-Soil Biochar Applications

Cited by 92 publications

References 331 publications

New Concept in Bioderived Composites: Biochar as Toughening Agent for Improving Performances and Durability of Agave-Based Epoxy Biocomposites

New Concept in Bioderived Composites: Biochar as Toughening Agent for Improving Performances and Durability of Agave-Based Epoxy Biocomposites

Impact of Pyrolysis Temperature on the Properties of Eucalyptus Wood-Derived Biochar

Development of Pressure-Responsive PolyPropylene and Biochar-Based Materials

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