Physical and chemical characterization of biochars derived from different agricultural residues
Keiji Jindo,Keiji Jindo,H. Mizumoto,Yoshito Sawada,Miguel A. Sánchez-Monedero,Tomonori Sonoki +5 more
TLDR
In this article, a selection of organic wastes with different characteristics (e.g., rice husk (RH), rice straw (RS), wood chips of apple tree (Malus pumila) (AB), and oak tree (Quercus serrata) (OB)) were pyrolyzed at different temperatures (400, 500, 600, 700, and 800 °C) in order to optimize the physicochemical properties of biochar as a soil amendment.Abstract:
. Biochar is widely recognized as an efficient tool for carbon sequestration and soil fertility. The understanding of its chemical and physical properties, which are strongly related to the type of the initial material used and pyrolysis conditions, is crucial to identify the most suitable application of biochar in soil. A selection of organic wastes with different characteristics (e.g., rice husk (RH), rice straw (RS), wood chips of apple tree (Malus pumila) (AB), and oak tree (Quercus serrata) (OB)) were pyrolyzed at different temperatures (400, 500, 600, 700, and 800 °C) in order to optimize the physicochemical properties of biochar as a soil amendment. Low-temperature pyrolysis produced high biochar yields; in contrast, high-temperature pyrolysis led to biochars with a high C content, large surface area, and high adsorption characteristics. Biochar obtained at 600 °C leads to a high recalcitrant character, whereas that obtained at 400 °C retains volatile and easily labile compounds. The biochar obtained from rice materials (RH and RS) showed a high yield and unique chemical properties because of the incorporation of silica elements into its chemical structure. The biochar obtained from wood materials (AB and OB) showed high carbon content and a high absorption character.read more
Citations
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Biochar physicochemical properties: pyrolysis temperature and feedstock kind effects
TL;DR: In this article, the impact of pyrolysis temperature and the type of biomass on the physicochemical characteristics of biochar and its impact on soil fertility is discussed, and a review succinctly presents the impact.
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Insight into Multiple and Multilevel Structures of Biochars and Their Potential Environmental Applications: A Critical Review
TL;DR: In this review, multiple and multilevel structures of biochars are interpreted based on their elemental compositions, phase components, surface properties, and molecular structures to design a "smart" biochar for environmentally sustainable applications.
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The adsorption, regeneration and engineering applications of biochar for removal organic pollutants: a review.
TL;DR: The source and production of biochar is summarized, its research status in the removal of organic pollutants is pointed out, the relevant adsorption parameters are introduced, its regeneration methods are summarizes, its application of engineering is studied, and the development prospects are described.
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Biochar properties and eco-friendly applications for climate change mitigation, waste management, and wastewater treatment: A review
TL;DR: In this paper, a review of the principles and concepts involved in biochar production, the factors that affect biochar quality, as well as the applications of biochar can be found.
Journal ArticleDOI
Properties of biochar derived from wood and high-nutrient biomasses with the aim of agronomic and environmental benefits
Rimena R. Domingues,Paulo Fernando Trugilho,Carlos Alberto Silva,Isabel Cristina Nogueira Alves de Melo,Leônidas Carrijo Azevedo Melo,Zuy M. Magriotis,Miguel A. Sánchez-Monedero +6 more
TL;DR: The agronomic value of the biochARS in this study is predominantly regulated by the nutrient richness of the biomass, but an increase in pyrolysis temperature to 750°C can strongly decrease the adsorptive capacities of chicken manure and coffee husk biochars.
References
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Characteristics of hemicellulose, cellulose and lignin pyrolysis
TL;DR: In this article, the pyrolysis characteristics of three main components (hemicellulose, cellulose and lignin) of biomass were investigated using, respectively, a thermogravimetric analyzer (TGA) with differential scanning calorimetry (DSC) detector and a pack bed.
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Biochar effects on soil biota – A review
Johannes Lehmann,Matthias C. Rillig,Janice E. Thies,Caroline A. Masiello,William C. Hockaday,David E. Crowley +5 more
TL;DR: A review of the literature reveals a significant number of early studies on biochar-type materials as soil amendments either for managing pathogens, as inoculant carriers or for manipulative experiments to sorb signaling compounds or toxins as mentioned in this paper.
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Bio-energy in the black
TL;DR: The precise half-life of biochar is still disputed, and this will have important implications for the value of the technology, particularly in carbon trading as mentioned in this paper, and it is not clear under what conditions, and over what period of time, biochar develops its adsorbing properties.
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The forms of alkalis in the biochar produced from crop residues at different temperatures
TL;DR: The forms of alkalis of the biochars produced from the straws of canola, corn, soybean and peanut at different temperatures (300, 500 and 700°C) were studied by means of oxygen-limited pyrolysis and it was suggested that carbonates were the major alkaline components in theBiochars generated at the high temperature.
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A review of biochars’ potential role in the remediation, revegetation and restoration of contaminated soils
Luke Beesley,Eduardo Moreno-Jiménez,Jose L. Gomez-Eyles,Eva Harris,Brett Robinson,Tom Sizmur +5 more
TL;DR: Specific mechanisms of contaminant-biochar retention and release over time and the environmental impact of biochar amendments on soil organisms remain somewhat unclear but must be investigated to ensure that the management of environmental pollution coincides with ecological sustainability.