Soil and tree responses to the application of wood ash containing charcoal in two soils with contrasting properties

Charcoal in Organic Horizon and Surface Mineral Soil in a Boreal Forest Fire Chronosequence of Western Quebec: Stocks, Depth Distribution, Chemical Properties and a Synthesis of Related Studies

“…Many studies of wood and/or bark ash are available (e.g., Ingerslev et al, 2011;Omil et al, 2013;Brais et al, 2015;Hansen et al, 2016) but these show highly variable properties, and are lower in total C than our samples. They also tend to be higher in elements such as Ca, Fe, Al and heavy metals, due to factors such as soil contamination of logging waste, mixing of sand or soil in fluidized bed combustion and presumably contact with heated metal surfaces.…”

The Physicochemical Properties and Composition of Biomass Ash and Evaluating Directions of its Applications

“…Despite the general belief in the beneficial impact of biomass ash on the environment, numerous research has indicated the presence of heavy metals in biomass ash, and their content depends primarily on the type of biomass burned [14]. Concentrations of metals in wood ash varies in wide ranges: Cd 1-41 mg/kg [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30], Co 3-27 mg/kg [17, 19-21, 23, 27, 29], Cr 11-9914 mg/kg [15][16][17][20][21][22][23][24][25][26][27][28][29][30][31][32], Cu 13-8793 mg/kg [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29]…”

BIOCARVÃO DE LODO DE ESGOTO E SEU EFEITO NO CRESCIMENTO E NAS CARACTERÍSTICAS MORFOLÓGICAS DE MUDAS DE EUCALIPTO (<i>Eucalyptus grandis</i> W.Hill ex Maiden)

“…Solla-Gullon, Santalla and Rodriguez-Soalleiro (2006) observed an 18% increase in plant height of a five-year old tree stand after application of 20 t ha -1 biochar. Omil, Piñeiro and Merino (2013), found good results in a forest field when applied 4.5 t ha -1 biochar mixed with ash. Therefore, the use of biosolid biochar in forest plants can be a wise strategy to cope with the problem of sewage sludge disposal while improving plant productivity.…”