Sorption of Copper and Zinc from Aqueous Solution by Metabasalt Residue and its Mineralogical Behavior

Residues from mining, as metabasalt powder from amethyst exploration, can be used to improve soil properties. Although there is a high-load content of clay minerals in metabasalt, the effects of this residue on cooper (Cu 2+ ) and zinc (Zn 2+ ) sorption and desorption have not been studied. The aim...

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Bibliographic Details
Published in:Water, air, and soil pollution air, and soil pollution, 2019-04, Vol.230 (4), p.1-18, Article 90
Main Authors: Dalacorte, Luana, Escosteguy, Pedro Alexandre Varella, Bortoluzzi, Edson Campanhola
Format: Article
Language:English
Subjects:
Agricultural land
Agricultural management
Aqueous solutions
Atmospheric Protection/Air Quality Control/Air Pollution
Cation exchange
Cation exchanging
Cations
Clay
Clay minerals
Climate Change/Climate Change Impacts
Copper
Desorption
Earth and Environmental Science
Environment
Environmental monitoring
Exploration
Hydrogeology
Illite
Illites
Information management
Interlayers
Kaolinite
Mineral exploration
Mineral nutrients
Mineralogy
Minerals
Mining
Montmorillonite
Montmorillonites
Nutrient cycles
Powder
Powders (Particulate matter)
Soil
Soil contamination
Soil improvement
Soil properties
Soil Science & Conservation
Soils
Sorption
Surveying
Water pollution
Water Quality/Water Pollution
Work capacity
Zinc
Zinc compounds
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Summary:Residues from mining, as metabasalt powder from amethyst exploration, can be used to improve soil properties. Although there is a high-load content of clay minerals in metabasalt, the effects of this residue on cooper (Cu 2+ ) and zinc (Zn 2+ ) sorption and desorption have not been studied. The aim of this work was to evaluate Cu 2+ and Zn 2+ sorption capacity of metabasalt powder and to discuss the mineralogical behavior facing this phenomenon. This residue sorption capacity was compared to reference clay minerals under two Cu 2+ and Zn 2+ concentrations (8 and 16 cmol c /kg) in a competitive system (Cu 2+ + Zn 2+ ). The sorption capacity was estimated by sequential desorption using cation exchange resin. A survey of mineralogical and Cu 2+ and Zn 2+ concentrations was performed on metabasalt before and after sorption, and after desorption tests. All materials sorbed higher amounts of Cu 2+ than Zn 2+ . The sorption magnitude decreased in the following order: metabasalt > montmorillonite > illite > kaolinite. Cu 2+ and Zn 2+ desorption from metabasalt is lower than the standard clay minerals, since the metabasalt sorption sites are expandable interlayers of clay minerals. The relevance and application of our findings are critical in providing information for the management of metabasalt residue, suggesting potential use as a remediation agent in contaminated water, especially those with high Cu 2+ and Zn 2+ loading. It also suggests that the Cu 2+ and Zn 2+ enrichment of this residue could potentially be used for converting the metabasalt into a useful source of slow nutrient supply for agricultural soils.
ISSN:0049-6979
1573-2932
DOI:10.1007/s11270-019-4141-x