2012
DOI: 10.1590/s0100-204x2012000500009
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Abstract: -The objective of this work was to obtain organic compounds similar to the ones found in the organic matter of anthropogenic dark earth of Amazonia (ADE) using a chemical functionalization procedure on activated charcoal, as well as to determine their ecotoxicity. Based on the study of the organic matter from ADE, an organic model was proposed and an attempt to reproduce it was described. Activated charcoal was oxidized with the use of sodium hypochlorite at different concentrations. Nuclear magnetic resonance… Show more

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Cited by 14 publications
(9 citation statements)
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“…This correction however assumes that the mass ratio of BPCA/pyrogenic C is constant, which was not properly evaluated for a broad spectrum of charred materials or weathered coal, which is already partially oxidized to aromatic carboxylic acids (Glaser et al, 2002;Kramer et al, 2004;Novotny et al, 2007Novotny et al, , 2009Maia et al, 2011;Linhares et al, 2012;Araujo et al, 2014).…”
Section: Quantification Of Pyrogenic Cmentioning
confidence: 99%
“…This correction however assumes that the mass ratio of BPCA/pyrogenic C is constant, which was not properly evaluated for a broad spectrum of charred materials or weathered coal, which is already partially oxidized to aromatic carboxylic acids (Glaser et al, 2002;Kramer et al, 2004;Novotny et al, 2007Novotny et al, , 2009Maia et al, 2011;Linhares et al, 2012;Araujo et al, 2014).…”
Section: Quantification Of Pyrogenic Cmentioning
confidence: 99%
“…The raw material used can be any organic material, such as bark, wood, crop residues or other waste of agricultural or livestock origin (MAIA; MADARI; NOVOTNY, 2011;NÓBREGA, 2011;LINHARES et al, 2012).…”
Section: Introductionmentioning
confidence: 99%
“…The addition of organic compounds to the soil, such as sewage sludge (Long et al, 2010), biochar (Tang et al, 2013;Schweiker et al, 2014), charcoal, and functionalized charcoal (Jośko et al, 2013), is being studied to reduce the mobility, bioavailability, and toxicity of metals such as Cu and Zn. Functionalized charcoal or biochar is also used as a sorbent in the removal of potentially toxic substances in industrial wastes (Deb et al, 2013) and as a sorbent for contaminant management in soil and water (Ahmad et al, 2014;Rajapaksha et al, 2016) due to characteristics that favor adsorption, such as high specific surface area, pore volume, and CEC (Liu et al, 2007;Linhares et al, 2012;Araujo et al, 2014).…”
Section: Introductionmentioning
confidence: 99%