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dc.contributor.authorEsfandbod, Maryam
dc.contributor.authorMerritt, Christopher R
dc.contributor.authorRashti, Mehran Rezaei
dc.contributor.authorSingh, Balwant
dc.contributor.authorBoyd, Sue E
dc.contributor.authorSrivastava, Prashant
dc.contributor.authorBrown, Christopher L
dc.contributor.authorButler, Orpheus M
dc.contributor.authorKookana, Rai S
dc.contributor.authorChen, Chengrong
dc.description.abstractChar as a carbon-rich material, can be produced under pyrolytic conditions, wildfires or prescribed burn offs for fire management. The objective of this study was to elucidate mechanistic interactions of copper (Cu2+) and nickel (Ni2+) with different chars produced by pyrolysis (green waste, GW; blue-Mallee, BM) and forest fires (fresh-burnt by prescribed fire, FC; aged char produced by wild fire, AC). The pyrolytic chars were more effective sorbents of Cu2+ (∼11 times) and Ni2+ (∼5 times) compared with the forest fire chars. Both cross-polarization (CPMAS-NMR) and Bloch decay (BDMAS-NMR) 13C NMR spectroscopies showed that forest fire chars have higher woody components (aromatic functional groups) and lower polar groups (e.g. O-alkyl C) compared with the pyrolytic chars. The polarity index was greater in the pyrolytic chars (0.99–1.34) than in the fire-generated chars (0.98–1.15), while aromaticity was lower in the former than in the latter. Fourier transform infrared (FTIR) and Raman spectroscopies indicated the binding of carbonate and phosphate with both Cu2+ and Ni2+ in all chars, but with a greater extent in pyrolytic than forest fire-generated chars. These findings have demonstrated the key role of char's oxygen-containing functional groups in determining their sorption capacity for the Cu2+ and Ni2+ in contaminated lands.
dc.relation.ispartofjournalEnvironmental Pollution
dc.subject.fieldofresearchSoil chemistry and soil carbon sequestration (excl. carbon sequestration science)
dc.titleRole of oxygen-containing functional groups in forest fire-generated and pyrolytic chars for immobilization of copper and nickel
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.facultyGriffith Sciences, Griffith School of Environment
gro.hasfulltextNo Full Text
gro.griffith.authorChen, Chengrong
gro.griffith.authorRezaei Rashti, Mehran

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