Stabilization/solidification of hot dip galvanizing ash using different binders

Vinter, Štěpán; Montañés, M.T.; Bednařík, Vratislav; Hřivnová, Pavla

doi:10.1016/j.jhazmat.2016.08.023

Cited by 34 publications

(10 citation statements)

References 17 publications

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“…The main purpose of waste disposal stabilization is to immobilize pollutants into a matrix, allowing for a safer way for landfill disposal of that waste. FBCFA as a one stabilizer binder has been found for many different materials: municipal solid waste (MSW) fly ash [183,184], metal-bearing sludges [185], hot dip-galvanizing ash with a high content of zinc [186], galvanic sewage sludge [187], and coal slimes [188]. On the other hand, FBCFA originating from waste combustion tends to have a high amount of leachable heavy metals, which are needed to stabilize to cement or geopolymer matrices.…”

Section: Waste Stabilizationmentioning

confidence: 99%

Utilization of Fly Ashes from Fluidized Bed Combustion: A Review

et al. 2020

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Traditionally fly ash is thought to be glassy, spherical particle originating from pulverized coal combustion (PCC) at temperature up to 1700 °C. However, nowadays fluidized bed combustion (FBC) technology is spreading quickly around the world as it is an efficient and environmentally friendly method. FBC is also able to utilize mixtures of low-grade solid fuels (e.g., coal, lignite, biomass, and waste) that have fluctuating quality, composition, and moisture contents. However, this leads to a high variation in the produced fly ash quality, unlike PCC fly ash, and hence challenges when attempting to utilize this fly ash. In this study, the utilization of fluidized bed combustion fly ash (FBCFA) was reviewed using the Scopus database. The most promising utilization target for FBCFA from biomass combustion is as a fertilizer and soil amendment. In construction, the FBCFA from various fuels is utilized as cement replacement material, in non-cement binders, as lightweight aggregates and cast-concrete products. Other types of construction applications include mine backfilling material, soil stabilizer, and road construction material. There are also other promising applications for FBCFA utilization, such as catalysts support material and utilization in waste stabilization.

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Section: Waste Stabilizationmentioning

confidence: 99%

Utilization of Fly Ashes from Fluidized Bed Combustion: A Review

et al. 2020

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“…O processo, após etapas preparatórias (decapagem, desengraxe, etc...) é efetivado em uma cuba onde o zinco se encontra fundido, numa temperatura de aproximadamente 450ºC. A peça metálica a ser galvanizada é imersa, por um tempo médio de 4 a 5 minutos, ocorrendo o recobrimento da superfície com uma fina camada de zinco, de aproximadamente 0,15 mm, que fornece uma camada protetiva contra corrosão [18][19][20]. Esse processo gera resíduos com conteúdo variável de zinco, os quais podem ser recuperados.…”

Section: Resíduos Da Indústria De Galvanização a Fogounclassified

Avaliação Do Potencial De Utilização De Resíduos Da Galvanização À Fogo Para a Recuperação Cruzada De Metais

Tubino¹,

Buzin²,

Kanno³

2019

ABM Proceedings

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Resumo A grande quantidade de metais existentes em alguns tipos de resíduos industriais e sucatas de equipamentos eletrônicos tem levado à busca de novos e mais eficientes métodos de reciclagem destes metais. O objetivo deste estudo é investigar o potencial de utilização de resíduos da indústria de galvanização a fogo para recuperação cruzada de metais, diminuindo a utilização de reagentes e possibilitando a geração de um número maior de produtos numa mesma operação. Ensaios foram realizados com quatro tipos de resíduos deste tipo de galvanização, através de soluções sintéticas de sulfato de cobre e acetato de chumbo, visando verificar o potencial do uso de resíduos da galvanização a fogo para recuperação de cobre e chumbo convenientemente solubilizados a partir de resíduos industriais ou eletrônicos. Os resultados mostraram que dois tipos de resíduos da galvanização à fogo tem potencial significativo para uso na recuperação cruzada de metais.

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“…Determination of total dissolved solids TDS values of the alkali solutions were evaluated using the standard test method ASTM D5907-13 [39].…”

Section: Estimation Of Dye Exhaustionmentioning

confidence: 99%

Ionic‐liquid‐assisted mixed alkali system for reactive dye fixation in a batch process – optimisation through response surface methodology

Kore

Shukla

2017

Coloration Technology

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An ionic liquid, choline hydroxide, was synthesised and used in a mixed alkali system for fixation of homobifunctional reactive dyes. Its molecular structure was confirmed using FTIR, 1 H NMR, and 13 C NMR spectroscopy. Response surface methodology was employed to optimise the dyeing conditions for reactive dyes using a sodium carbonate-choline hydroxide mixed alkali system. A Box-Behnken design with three variables, namely sodium carbonate concentration, choline hydroxide concentration, and fixation time, was used to design the experimental runs. Analysis of variance was used to estimate the statistical parameters and to evaluate the quality of the statistical model fit. The quality and model terms were evaluated using Fisher's F-test, the coefficient of determination, and probability values. The interactive effect of operating variables on the response (K/S) was studied using three-dimensional response surface plots. The results obtained from the solutions of highest desirability were found to be comparable with conventionally used alkali systems, namely sodium carbonate alone and sodium carbonate-sodium hydroxide mixed alkali. The ionic liquid choline hydroxide could be effectively used along with sodium carbonate for fixation of reactive dyes, with the advantage of reductions in pollution load, total dissolved solids, and chemical oxygen demand. Coloration Technology Society of Dyers and Colourists

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Stabilization/solidification of hot dip galvanizing ash using different binders

Cited by 34 publications

References 17 publications

Utilization of Fly Ashes from Fluidized Bed Combustion: A Review

Utilization of Fly Ashes from Fluidized Bed Combustion: A Review

Avaliação Do Potencial De Utilização De Resíduos Da Galvanização À Fogo Para a Recuperação Cruzada De Metais

Ionic‐liquid‐assisted mixed alkali system for reactive dye fixation in a batch process – optimisation through response surface methodology

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