NDLI: Effect of pruning-derived biochar on heavy metals removal and water dynamics

Content Provider	Springer Nature Link
Author	Caporale, Antonio G. Pigna, Massimo Sommella, Alessia Conte, Pellegri
Copyright Year	2014
Abstract	Biomass-derived biochar is considered as a promising heavy metal adsorbent, due to abundance of polar functional groups, such as carboxylic, hydroxyl, and amino groups, which are available for heavy metal removal. The aims of this study were to evaluate the effectiveness of an orchard pruning-derived biochar in removing some heavy metals (through the evaluation of isotherms) and to study water dynamics at the solid-liquid interface as affected by heavy metal adsorption (through an innovative nuclear magnetic resonance (NMR) relaxometry approach). Both isotherms and NMR spectra revealed that Pb and Cr showed a good affinity for the biochar surface (Pb > Cr), while Cu was less affine. Accordingly, higher amounts of Pb and Cr were adsorbed by biochar as compared to those of Cu in the single systems. In binary systems (i.e., when two metals were applied simultaneously), Pb showed the highest inhibition of the adsorption of the other two metals, whereas the opposite was evidenced when Cu was used; the competitive adsorption was also strongly influenced by the metal residence time on biochar surface. In ternary systems (i.e., when all metals were applied simultaneously), even in the presence of high amounts of Pb and Cr, considerable adsorption of Cu occurred, indicating that some biochar adsorption sites were highly specific for a single metal.
Starting Page	1211
Ending Page	1222
Page Count	12
File Format	PDF
ISSN	01782762
Journal	Biology and Fertility of Soils
Volume Number	50
Issue Number	8
e-ISSN	14320789
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-09-26
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Biochar Heavy metals Lead Chromium Copper Water dynamics NMR relaxometry Agriculture Soil Science & Conservation
Content Type	Text
Resource Type	Article
Subject	Agronomy and Crop Science Soil Science Microbiology

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