Influence of commercial and residual sorbents and silicates as additives on the stabilisation/solidification of organic and inorganic industrial waste

Coz, Alberto; Andrés, A.; Soriano, Sonia; Viguri, Javier R.; Ruiz, M. Carmen Solano; Irabien, Ángel

doi:10.1016/j.jhazmat.2008.08.079

Cited by 31 publications

(15 citation statements)

References 28 publications

(61 reference statements)

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“…The speciation of the heavy metals studied is usually the hydroxides and they exhibit a minimum solubility in this pH range. 47 Table 3 shows the regulated limits for the three landfills, i.e. inert, non-hazardous and hazardous waste calculated at L/S=10 L kg…”

Section: Resultsmentioning

confidence: 99%

Management scenarios for olive oil mill waste based on characterization and leaching tests

Coz

Villegas

Andrés

et al. 2011

J of Chemical Tech & Biotech

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Section: Resultsmentioning

confidence: 99%

Management scenarios for olive oil mill waste based on characterization and leaching tests

Coz

Villegas

Andrés

et al. 2011

J of Chemical Tech & Biotech

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“…The reason for this was, primarily, the presence of gypsum and other sulfates with a buffering capacity around pH 5-6, 32 and a significant content of iron and zinc in the WWT sludge having a buffering capacity also around pH 5-6. 33 The amount of acid that a stabilized material could neutralize (at pH 7) increased with the amount of FA in the samples, from 5 to 25 %. The samples with added lime had greater buffering capacities.…”

Section: Methodsmentioning

confidence: 95%

A solidification/stabilization process for wastewater treatment sludge from a primary copper smelter

Ivšić-Bajčeta¹,

Kamberović²,

Korać³

et al. 2013

J Serb Chem Soc

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Wastewater treatment sludge from primary copper smelter is characterized as hazardous waste that requires treatment prior disposal due to significant amount of heavy metals and arsenic. The aim of the presented study was to investigate the feasibility and the effectiveness of solidification/stabilization process of the sludge using fly ash and lime as binders. The effectiveness of the process was evaluated by Unconfined Compressive Strength (UCS) testing, leaching tests (EN 12457-4 and Toxicity Characteristic Leaching Procedure (TCLP)) and Acid Neutralization Capacity (ANC) test. All samples reached target UCS of 0.35 MPa. Calcium to silicon concentration ratio (cCa/cSi), determined by X-Ray Fluorescence (XRF) analysis, was identified as main factor governing strength development. Inductively coupled plasma-optical emission spectrometry (ICP-OES) analyses of solutions after leaching tests showed excellent stabilization of Cu, Ni, Pb and Zn (above 99 %) and arsenic (above 90 %) in samples with high Ca(OH)2 content. Results of ANC test indicated that buffering capacity of solidified material linearly depended on Ca concentration in FA and lime. Sample with 20 % of binder heaving 50 % of FA and 50 % of lime met all requirements to be safely disposed. [Projekat Ministarstva nauke Republike Srbije, br. 34033

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“…Toxic elements that are present in hazardous waste materials can be captured in such 3-dimensional network structures. Although there are many researches on immobilisation technology, very few have considered in depth the leaching performance of lead smelting slags treated by different binders from different studies (Coz et al, 2009;Ogundiran et al 2013;Kogbara, 2014;). This study presents a detailed leaching behavior of slag with and without natural and waste materials as immobilisation agents.…”

Section: Introductionmentioning

confidence: 99%

Immobilisation and Leaching Performance of Lead-Acid Batteries Smelting Slag Using Natural and Waste Materials

2017

Global NEST Journal

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The slag generated in the rotary furnaces is classified hazardous waste. In this regard, landfill disposal of lead smelting slag is not feasible since a few hundred tons are produced per year; leaching of heavy metals into ground water is of concern. The release of heavy metals into the environment has resulted in a number of environmental problems. The disposal of slag is becoming more expensive each year due to large land areas needed for its disposal. The best way to solve the disposal problem of waste materials is to decrease the quantity for disposal with utilization of waste materials in the industry. The toxicity of the waste is determined by leaching tests and depending on the characteristics of the waste the spent abrasive must be disposed of as solid or hazardous waste. The aim of this study is to investigate leaching characteristics of lead smelting slag according to leaching tests such as TCLP, and TS EN 12457-4 tests methods. In this study, mixed-level factorial design was applied to optimize process parameters for lead removal from lead smelting slag using natural (sepiolite, montmorillonite, illite and seashell) and waste material (red mud). The established model was then used as a predictor to achieve better understanding of the adsorption process and to obtain optimal settings of the experimental factors. The present study includes the safe disposal of lead smelting slag using natural and waste materials. Experimental results indicated that red mud and seashell can be used as environmentally friendly adsorbents that are capable of lead release from lead smelting slag.

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Influence of commercial and residual sorbents and silicates as additives on the stabilisation/solidification of organic and inorganic industrial waste

Cited by 31 publications

References 28 publications

Management scenarios for olive oil mill waste based on characterization and leaching tests

Management scenarios for olive oil mill waste based on characterization and leaching tests

A solidification/stabilization process for wastewater treatment sludge from a primary copper smelter

Immobilisation and Leaching Performance of Lead-Acid Batteries Smelting Slag Using Natural and Waste Materials

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