Potential of hazardous waste encapsulation in concrete with coal fly ash and bivalve shells

Lieberman, Roy Nir; Knop, Yaniv; Izquierdo, María; Palmerola, Natalia Moreno; Rosa, J. de la; Cohen, Haim; Muñoz-Quirós, Carmen; Córdoba, Patricia; Querol, Xavier

doi:10.1016/j.jclepro.2018.03.079

Cited by 15 publications

(7 citation statements)

References 27 publications

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“…[ 50 ]. Formerly, CFA was considered a hazardous waste [ 51 ], but today, it is considered to be a useable material. CFA has high amounts of micro- and macro-nutrients that can be used as a source of nutrients for plants [ 52 , 53 ].…”

Section: Industrial Wastementioning

confidence: 99%

Extraction of Value-Added Minerals from Various Agricultural, Industrial and Domestic Wastes

Yadav¹,

Yadav²,

Tirth

et al. 2021

Materials

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Environmental pollution is one of the major concerns throughout the world. The rise of industrialization has increased the generation of waste materials, causing environmental degradation and threat to the health of living beings. To overcome this problem and effectively handle waste materials, proper management skills are required. Waste as a whole is not only waste, but it also holds various valuable materials that can be used again. Such useful materials or elements need to be segregated and recovered using sustainable recovery methods. Agricultural waste, industrial waste, and household waste have the potential to generate different value-added products. More specifically, the industrial waste like fly ash, gypsum waste, and red mud can be used for the recovery of alumina, silica, and zeolites. While agricultural waste like rice husks, sugarcane bagasse, and coconut shells can be used for recovery of silica, calcium, and carbon materials. In addition, domestic waste like incense stick ash and eggshell waste that is rich in calcium can be used for the recovery of calcium-related products. In agricultural, industrial, and domestic sectors, several raw materials are used; therefore, it is of high economic interest to recover valuable minerals and to process them and convert them into merchandisable products. This will not only decrease environmental pollution, it will also provide an environmentally friendly and cost-effective approach for materials synthesis. These value-added materials can be used for medicine, cosmetics, electronics, catalysis, and environmental cleanup.

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Section: Industrial Wastementioning

confidence: 99%

Extraction of Value-Added Minerals from Various Agricultural, Industrial and Domestic Wastes

Yadav¹,

Yadav²,

Tirth

et al. 2021

Materials

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“…CA is a sustainable supply for numerous innovative applications [1,12,[14][15][16][17][18][19][20][21][22]59]. The reuse of CA as cement replacement material has been practiced in the US construction industries for decades [23,24] due to its pozzolanic property [3,10,11,26].…”

Section: Model Equation For Ecological Risk Indicatorsmentioning

confidence: 99%

“…There are many recycled products made from CA such as radionuclide stabilizers in roadway pavements [12], adsorbents [13] and coagulants for wastewater treatment [14]. Moreover, it is useful as cement replacement material [15], good for brick production [16] and convenient as aggregate for concrete made from the combination of granite waste and FA [17]. 'CA' is also rich in heavy metals making it a premium source for aluminium extraction [14,18,19] as well as a source of rare earth metallic elements (e.g., yttrium, scandium, and 14 elements of the lanthanide series) [1,[20][21][22].…”

Section: Introductionmentioning

confidence: 99%

“…'CA' is also rich in heavy metals making it a premium source for aluminium extraction [14,18,19] as well as a source of rare earth metallic elements (e.g., yttrium, scandium, and 14 elements of the lanthanide series) [1,[20][21][22]. It can also function as an excellent scrubber and fixation reagent for hazardous acidic sludge wastes containing toxic trace elements from the phosphate industry [17]. The reuse of CA as cement replacement material has been long established in the US construction industry [23,24].…”

Section: Introductionmentioning

confidence: 99%

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Ecological Risk Indicators for Leached Heavy Metals from Coal Ash Generated at a Malaysian Power Plant

et al. 2021

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The application of coal ash (CA) in construction industries has grown rapidly, posing risk to the environment due to heavy metals leaching from the material. This research presents a simulation of ecological risk assessment and model risk indicators (ERI) of leached heavy metals (lead (Pb), copper (Cu), zinc (Zn) and arsenic (As)) from CA (FA: fly ash and BA: bottom ash) via response surface methodology (RSM). The ERI values were based on quantified leached heavy metals from the toxicity characteristic leaching procedure (TCLP-1311) and synthetic precipitation leaching procedure (SPLP-1312). The ecological risk index (RI ) values for TCLP were 10.27 × 100 (FA), 9.91 × 100 (BA) and 12.58 × 100 (FA + BA); whereas RI for SPLP were 10.34 × 100 (FA), 9.90 × 100 (BA) and 12.61 × 100 (FA + BA). Twenty-nine combinations of operations were evaluated based on Box-Behnken design with ERI as the response variable. The established model risk indicator (i.e., coded and actual factors) of Pb, Cu, Zn and ‘As’ showed significant model terms that describe their relationship very well, perfectly fit to the corresponding ERI (sum of squares = 0.4160, F value = 682,375.55) with probability of 0.01% for an F-value could occur due to noise. The optimized models were validated with error percentage of less than 5%. The established ERI models showed significant model terms and will be useful for ecological monitoring of CA application in construction industries.

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“…Since the oil shale ashes (OSA) contain a high percentage of calcium content (mainly lime and calcite CaCO 3 ), it can be used to scrub acidic solutions. Moreover, the surface of the ash particles serves as a very good adsorbent; thus, it can be used as an efficient fixation reagent for wastes with trace elements. − …”

Section: Introductionmentioning

confidence: 99%

Neutralization of Acidic Industrial Wastes and Fixation of Trace Element by Oil Shale Ash: Formation of a Green Product

Nov,

Hassid,

Barak

et al. 2023

ACS Omega

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Oil shale is a rock that contains organic matter in a concentration that allows it to be used as an energy source. As a result of the shale combustion process, large amounts of two types of ash are formed: fly ash (∼10%) and bottom ash (∼90%). At present, in Israel, only fly oil shale ash is used, which constitutes a minority of the oil shale burn products, whereas bottom oil shale ash is accumulated as waste. Bottom ash contains a high percentage of calcium in the form of anhydrite (CaSO4) and calcite (CaCO3). Thus, it can be used to neutralize acidic waste and to fix trace elements. This study examined the process of scrubbing the acid waste by the ash, its characterization pre- and post-upgrade treatment, to test its suitability as a partial substitute for aggregates, natural sand, and cement in concrete mixtures. In the current study, we compared the chemical and physical characterization of oil shale bottom ash before and after upgrading the ash via chemical treatment. In addition, its utilization as a scrubbing reagent for acidic wastes from the phosphate industry was studied.

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Potential of hazardous waste encapsulation in concrete with coal fly ash and bivalve shells

Cited by 15 publications

References 27 publications

Extraction of Value-Added Minerals from Various Agricultural, Industrial and Domestic Wastes

Extraction of Value-Added Minerals from Various Agricultural, Industrial and Domestic Wastes

Ecological Risk Indicators for Leached Heavy Metals from Coal Ash Generated at a Malaysian Power Plant

Neutralization of Acidic Industrial Wastes and Fixation of Trace Element by Oil Shale Ash: Formation of a Green Product

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