Sorption-desorption tests on the performance of non-hazardous industrial wastes in decreasing leachability of trace metals on contaminated lands

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dc.contributor.authorMwegoha, W. J. S.
dc.contributor.authorMuhondwa, J.
dc.date.accessioned2020-03-20T06:08:31Z
dc.date.available2020-03-20T06:08:31Z
dc.date.issued2015
dc.descriptionFull Text Article. Also available at: http://dx.doi.org/10.4314/stech.v4i2.8en_US
dc.description.abstractSoil stabilization by addition of industrial solid wastes in order to increase trace metals retention and (a minor secondary effect) to dilute their concentrations is an environmentally friendly and attractive soil remediation process that attenuates trace metals impact. In this study, non-hazardous industrial by-products (sugar foam, gypsum, zeolitic materials and fly ashes) were tested using laboratory scale experiments to assess their performance on the remediation of acidic soil that has been affected by a pyritic source of contamination at Aljaraque, Spain. In this soil, the concentration of metals in the Aqua Regia and soil-water extracts confirmed the extent of the soil contamination since all seven trace metals (Cu, Cd, As, Pb, Zn, Co and Sb) analyzed from the Aqua Regia extracts and nine trace metals (Cu, As, Cd, Zn, Pb, Co, Sb, Ni and Cr) analyzed in soil-water extract were found above the intervention limits specified in the Junta de Andalucía (Spain) and Germany National Standard (DIN) respectively for both Agriculture and Industrial activities. Metal sorption and desorption capacity of the industrial wastes were estimated in a soil water extract medium. Fly ashes and zeolitic material were found to be the best candidate materials for soil remediation due to their ability to increase soil pH, exhibiting greater solid-liquid distribution coefficient (Kd), lower sorption reversibility (Kd, des) and lower desorption yields to almost all trace metals analyzed.en_US
dc.identifier.citationMwegoha, W. J. S., & Muhondwa, J. (2015). Sorption-desorption tests on the performance of non-hazardous industrial wastes in decreasing leachability of trace metals on contaminated lands. International Journal of Science and Technology, 4 (2), 86-106. doi: http://dx.doi.org/10.4314/stech.v4i2.8en_US
dc.identifier.otherhttp://dx.doi.org/10.4314/stech.v4i2.8
dc.identifier.urihttp://hdl.handle.net/20.500.12661/2234
dc.language.isoenen_US
dc.publisherOpen Science Onlineen_US
dc.subjectSoil stabilizationen_US
dc.subjectMetals retentionen_US
dc.subjectAcidic soilen_US
dc.subjectMetal sorptionen_US
dc.subjectIndustrial wastesen_US
dc.subjectZeolitic materialen_US
dc.subjectSoil remediationen_US
dc.subjectAmendment materialsen_US
dc.subjectContaminated soilen_US
dc.subjectTrace metalsen_US
dc.subjectLeachabilityen_US
dc.titleSorption-desorption tests on the performance of non-hazardous industrial wastes in decreasing leachability of trace metals on contaminated landsen_US
dc.typeArticleen_US
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