Nigerian lateritic clay soils as hydraulic barriers to adsorb metals. Geotechnical characterization and chemical compatibility

• Autorzy: Ojuri O. O. , Akinwumi I. I. , Oluwatuyi O. E.

Identyfikatory

DOI

10.5277/epel70416

• Języki publikacji: EN

Abstrakty

EN

The suitability of using lateritic clays from Aviele and Igarra has been investigated both in the Northern part of Edo state, Nigeria as liners of an engineered landfill and to adsorb metals in leachates. Geotechnical characteristics, pH, and elemental composition for the lateritic clay samples were determined. The chemical composition, pH, total dissolved solids and electrical conductivity were determined for leachates collected from two dumpsites. The capacities of the lateritic clay soils to adsorb heavy metals in the leachates were determined using the batch equilibrium adsorption technique. The unconfined compressive strength (UCS) of soils were found to be sufficient to resist damage. By both the standard and modified Proctor compaction tests, it was found that the coefficients of permeability for the soil samples were lower than 1×10–9 m/s that is widely recommended for soils that are to be used as landfill liners. Pb²⁺, Zn²⁺ and Cr²⁺ were the heavy metals in the leachates. The sorption selectivity order for tested soils depended on the soil type and properties.

Słowa kluczowe

EN

clay; heavy metals; soil; electrical conductivity; Nigeria

PL

glina; metale ciężkie; gleba; przewodnictwo elektryczne; Nigeria

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Environment Protection Engineering
• Rocznik: 2017
• Tom: Vol. 43, nr 4
• Strony: 209--222
• Opis fizyczny: Bibliogr. 19 poz., tab., rys.

Twórcy

autor

Ojuri O. O.

• Department of Civil and Environmental Engineering, Federal University of Technology, Akure, Ondo State, Nigeria

autor

Akinwumi I. I.

• Department of Civil Engineering, Covenant University, Ota, Ogun State, Nigeria

autor

Oluwatuyi O. E.

• Department of Civil Engineering, Landmark University, Omu Aran, Kwara State, Nigeria

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).