Loading of VO2+ and Cu2+ to partially oxidized charcoal fines rejected from Brazilian metallurgical industry

Angelo, Liliam Cristina; Mangrich, Antônio S.; Mantovani, Karen Mary; Santos, Sailer Santos dos

doi:10.1007/s11368-013-0764-5

Cited by 13 publications

(10 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In parallel to this scenario, Brazil is the world's greatest charcoal producer with an annual production of 10 million tons of charcoal, supplying mainly the steel industry. However, approximately 15% of this production is lost as charcoal fines, since they are not suitable for industrial use [6,15]. Despite biochar and charcoal own similar composition, minor importance has been directed to the charcoal fine residues in Brazil as a potential soil conditioner and, especially, as a means to sequester C and mitigate global warming.…”

Section: Introductionmentioning

confidence: 99%

Charcoal Fine Residues Effects on Soil Organic Matter Humic Substances, Composition, and Biodegradability

et al. 2019

View full text Add to dashboard Cite

Biochar has been shown as a potential mean to enhance carbon sequestration in the soil. In Brazil, approximately 15% of the produced charcoal is discarded as charcoal fines, which are chemically similar to biochar. Therefore, we aimed to test charcoal fines as a strategy to increase soil carbon sequestration. Charcoal fines of hardwood Mimosa scabrella were incorporated into a Cambisol down to 10 cm (T1 = 0 and T4 = 40 Mg ha−1) in Southern Brazil. Soil samples were collected (0–30 cm) 20 months after charcoal amendment. Soil organic matter (SOM) acid extract, humic acid, fulvic acid, and humin fractions were separated. Solid-state 13C nuclear magnetic resonance (NMR) spectra from charcoal and SOM in T1 and T4 were obtained before and after 165 days of incubation under controlled conditions. Charcoal increased soil carbon as fulvic (10–20 cm) and humic acids (10–30 cm) and, especially, as humin (0–5 cm), which probably occurred due to the hydrophobic character of the charcoal. The 13C NMR spectra and mean residence times (MRT) measured from incubation essays indicated that the charred material decomposed relatively fast and MRT of T1 and T4 samples were similar. It follows that the charcoal fines underwent similar decomposition as SOM, despite the high charcoal dose applied to the soil and the high aryl C contribution (78%) to the total 13C intensity of the charcoal NMR spectra.

show abstract

Section: Introductionmentioning

confidence: 99%

Charcoal Fine Residues Effects on Soil Organic Matter Humic Substances, Composition, and Biodegradability

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Biochar was shown to be a promising amendment agent for the immobilization of heavy metal, and both inorganic matter (such as P and Si) and organic functional groups in biochars affected the immobilization and bioavailability of heavy metal (Angelo et al 2014;Cao et al 2009a;Luo et al 2014;Uchimiya et al 2012a;Zhang et al 2013a;Xu and Chen 2015). The precipitation of phosphorus-containing minerals was dominated in Pb adsorption by dairy-manure-derived biochar (Cao et al 2009a).…”

Section: Introductionmentioning

confidence: 99%

Competitive adsorption of cadmium and aluminum onto fresh and oxidized biochars during aging processes

2015

View full text Add to dashboard Cite

Purpose Fresh biochar was shown to effectively reduce concentrations of heavy metal in soil, but the influences of the aging processes of biochar and competitions from other elements are warranted to precisely evaluate the long-term effect of biochar. This work investigated the effects of water washing, oxidation, and coexistence of aluminum (Al) on cadmium (Cd) adsorption by biochars and oxidized biochars. Materials and methods The Cd adsorption and the competitive adsorption of Cd and Al to rice straw-derived biochars, before and after oxidation by HNO 3 /H 2 SO 4 , were investigated. Meanwhile, the structural characteristics and surface charges of primary and oxidized biochars, with and without Cd loading, were analyzed by scanning electron microscopy, fourier-transform infrared spectroscopy, and zeta potential. Results and discussion The adsorption of Cd onto fresh biochars was dominated by surface complexation of oxygencontaining functional groups via esterification reactions, which was regulated by solution pH. Oxidization (aging) introduced carboxylic functional groups to biochar surfaces, which served as additional binding sites for Cd. The Cd binding to biochars was significantly affected by the coexistence of Al via acidification and competition for adsorption sites. Conclusions The biochars exhibited high sorption capacities of Cd in soil, but soil acidification led to a counteractive of biochar's liming effect and a reduction of Cd-binding sites; thus, the long-term effect of biochar for heavy metal immobilization should be paid more attention in acidic soil.

show abstract

“…The annual Brazilian production adds up to around 10 million tons of charcoal. However, 15 % of this production is lost as charcoal fines (Pennise et al 2001;Maia et al 2011) which are not suitable for the steel industry due to clogging of the gas flow, which reduces the efficiency of the blast furnaces (Angelo et al 2014).…”

Section: Introductionmentioning

confidence: 99%

“…However, these studies usually focus on soil fertility, crop yield, impact on soil microorgani s m s , g r e e n h o u s e g a s e m i s s i o n s , a n d c h ar c o a l functionalization (Zanetti et al 2003;Steiner et al 2007;Angelo et al 2014). Therefore, there is still scarce information about how SOM stability and quality are affected by charcoal application.…”

Section: Introductionmentioning

confidence: 99%

Soil chemical properties and organic matter composition of a subtropical Cambisol after charcoal fine residues incorporation

et al. 2014

View full text Add to dashboard Cite

Loading of VO2+ and Cu2+ to partially oxidized charcoal fines rejected from Brazilian metallurgical industry

Cited by 13 publications

References 21 publications

Charcoal Fine Residues Effects on Soil Organic Matter Humic Substances, Composition, and Biodegradability

Charcoal Fine Residues Effects on Soil Organic Matter Humic Substances, Composition, and Biodegradability

Competitive adsorption of cadmium and aluminum onto fresh and oxidized biochars during aging processes

Soil chemical properties and organic matter composition of a subtropical Cambisol after charcoal fine residues incorporation

Contact Info

Product

Resources

About