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Suitability of Different Agricultural and Urban Organic Wastes as Feedstocks for the Production of Biochar—Part 1: Physicochemical Characterisation

AutorLópez-Cano, Inés; Cayuela, María L.; Mondini, Claudio; Takaya, Chibi A.; Ross, Andrew B.; Sánchez-Monedero, Miguel A.
Fecha de publicación2-jul-2018
EditorMultidisciplinary Digital Publishing Institute
CitaciónSustainability 10 (7): 2265 (2018)
ResumenBiochar is traditionally made from clean lignocellulosic or waste materials that create no competition for land use. In this paper, the suitability of alternative feedstocks of agricultural and urban origins are explored. A range of biochars was produced from holm oak and a selection of organic wastes, such as greenhouse wastes, greenwastes, a cellulosic urban waste, municipal press cake and pig manure. They were characterized and assessed for their potential agricultural use. The physicochemical properties of biochars were mainly driven by the characteristics of feedstocks and the pyrolysis temperature. The use of pre-treated lignocellulosic residues led to biochars with a high concentration of ash, macro and micronutrients, whereas raw lignocellulosic residues produced biochars with characteristics similar to traditional wood biochars. All biochars were found to be suitable for agricultural use according to the international standards for the use of biochars as soil amendments, with the exception of a biochar from urban origin, which presented high levels of Cr and Pb. The use of these biochars as soil amendments requires a thorough agronomical evaluation to assess their impact on soil biogeochemical cycles and plant growth.
URIhttp://hdl.handle.net/10261/167924
Identificadoresdoi: 10.3390/su10072265
Aparece en las colecciones: Colección MDPI
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