Cr(VI) sorption/desorption on untreated and mussel-shell-treated soil materials: fractionation and effects of pH and chromium concentration

Otero, M.; Cutillas-Barreiro, L.; Nóvoa-Muñoz, J. C.; Arias-Estévez, M.; Fernández-Sanjurjo, M. J.; Álvarez-Rodríguez, E.; Núñez-Delgado, A.

doi:https://doi.org/10.5194/se-6-373-2015

Articles | Volume 6, issue 2

https://doi.org/10.5194/se-6-373-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/se-6-373-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 6, issue 2

Research article

|

02 Apr 2015

Research article |

| 02 Apr 2015

Cr(VI) sorption/desorption on untreated and mussel-shell-treated soil materials: fractionation and effects of pH and chromium concentration

M. Otero, L. Cutillas-Barreiro, J. C. Nóvoa-Muñoz, M. Arias-Estévez, M. J. Fernández-Sanjurjo, E. Álvarez-Rodríguez, and A. Núñez-Delgado

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Final revised paper (published on 02 Apr 2015)
Preprint (discussion started on 18 Dec 2014)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC C1511: 'Comments on paper', Anonymous Referee #1, 21 Jan 2015
- AC C1630: 'Response to Reviewer 1', Avelino Núñez-Delgado, 13 Mar 2015
RC C1628: 'Revision of manuscript SE-1014-123', Anonymous Referee #2, 09 Mar 2015
- AC C1632: 'Response to Reviewer 2', Avelino Núñez-Delgado, 13 Mar 2015

Short summary

The pyritic material studied here had the highest Cr(VI) retention, whereas the lowest corresponded to granitic material. The highest Cr retention was achieved at very acid pH. The amendment with 12 t ha-1 mussel shell did not cause marked changes in Cr(VI) retention. Regarding Cr(VI) fractionation, the soluble fraction was dominant in mussel shell and in the unamended and amended granitic material, whereas more stable fractions dominated in the pyritic material and in the forest soil.