The conversion technology of fly ash into zeolites

Wdowin, Magdalena; Franus, Małgorzata; Panek, Rafał; Badura, Lidia; Franus, Wojciech

doi:10.1007/s10098-014-0719-6

Cited by 198 publications

(89 citation statements)

References 31 publications

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“…The synthetic zeolites are usually obtained from the chemical reaction between sodium silicate, Na 2 SiO 3 , and sodium aluminate, NaAlO 2 , under varying conditions of temperature, pressure and reaction time. In addition to pure chemical reagents, raw materials such as fly ash, perlite, clay minerals and obsidian can be used for the synthesis of zeolites [42][43][44][45][46].…”

Section: Adsorbents In the Petroleum Spills Cleanupmentioning

confidence: 99%

Application of Mineral Sorbents for Removal of Petroleum Substances: A Review

et al. 2017

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Environmental pollution with petroleum products has become a major problem worldwide, and is a consequence of industrial growth. The development of sustainable methods for the removal of petroleum substances and their derivatives from aquatic and terrestrial environments and from air has therefore become extremely important today. Advanced technologies and materials dedicated to this purpose are relatively expensive; sorption methods involving mineral sorbents are therefore popular and are widely described in the scientific literature. Mineral materials are easily available, low-cost, universal adsorbents and have a number of properties that make them suitable for the removal of petroleum substances. This review describes recent works on the use of natural, synthetic and modified mineral adsorbents for the removal of petroleum substances and their derivatives from roads, water and air.

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Section: Adsorbents In the Petroleum Spills Cleanupmentioning

confidence: 99%

Application of Mineral Sorbents for Removal of Petroleum Substances: A Review

et al. 2017

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“…Their crystal structure contains numerous pores and cavities of different sizes giving them a unique ion-exchange, sorption and catalytic properties (Wdowin et al 2014). Because of these properties, zeolites have found applications in many areas such as environmental engineering (Mulgundmath et al 2012), construction industry (de Gennaro et al 2004), agriculture (Polat et al 2004) and refinery industries (Zhu et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Zeolitization of Sewage Sludge Ash With a Fusion Method

Latosińska¹

2016

J. Ecol. Eng.

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The study shows the results of zeolitization of municipal sewage sludge ash with the indirect fusion method followed by a hydrothermal method. The zeolitization of sewage sludge ash was conducted at the melting temperature of 550 o C and the melting time of 60 minutes, crystallization temperatures of 60 o C and 90 o C, crystallization time of 6 hours and the SSA:NaOH ratio of 1:1.8; 1:1.4. The research of modified sewage sludge ashes included the observation of changes of ash particles surface and the identification of crystalized phases. The zeolitization of sewage sludge ash at the ratio of SSA:NaOH 1.0:1.4 did not cause the formation of zeolite phases. On the other hand, the zeolitization at the ratio of SSA:NaOH 1.0:1.8 resulted in the formation of desired zeolite phases such as zeolite Y (faujasite) and hydroxysodalite. The presented method of sewage sludge ash zeolitization allows to obtain highly usable material. Synthesized zeolites may be used as adsorbents and ion exchangers. They can be potentially used to remove heavy metals as well as ammonia from water and wastewater.

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“…When a product has reached the end of its life, products can be efficiently reused again and again and create further value (COM 2014, 398). One of the factors determining the possibility of moving towards a CE is the implementation of innovation technologies (Wdowin et al 2014), with a particular emphasis on eco-innovation. Despite the fact that these two issues are linked, a uniform methodology designed to compare the degree to which economies have moved towards a CE which also includes eco-innovation has not currently been established.…”

Section: Introductionmentioning

confidence: 99%

Circular economy indicators in relation to eco-innovation in European regions

Smol

Kulczycka

Avdiushchenko

2017

Clean Techn Environ Policy

220

105

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The concept of a circular economy (CE) has become popular and important issue in environmental management in recent years; however, there are not particular indicators dedicated to it in regional policy. CE approach is an industrial system that is restorative by design, and it emphasises that it is important that, rather than extracting natural resources, the materials that have already been taken can and should be recovered and reused in different ways, thereby securing natural resources from over-exploitation. In order to meet CE assumptions, modern and innovative technologies that allow for the recovery of valuable materials should be developed. This also applies to eco-innovation that connects technology development with environmental aspects. It is therefore obvious that issues of CE and eco-innovation are linked, and a uniform methodology aimed at compare the levels of moving to CE including eco-innovation solutions should be established. Because the focus in European Union (EU) has been paid on regions, measuring of CE-eco-innovations levels is especially important at the regional level. In this paper, the proposals of CE indicators, based on eco-innovation factors, which can be possible to create based on existing data set (Eurostat, Cohesion policy) are presented. It is recommend to use of five group indicators for measuring regional CE-eco-innovation. Based on EcoInnovation Scoreboard which describes innovation measurement, three of proposed indicator groups are associated directly with innovations, taking into account the principles of CE: CE-eco-innovation inputs, CE-eco-innovation activities and CE-eco-innovation outputs, and other two groups of indicators are effects of the CE-eco-innovation introduction: resource efficiency outcomes and socio-economic outcomes. This way of measuring CE-eco-innovation allows for create holistic, systematic and integrated approach for the CE concept at the regional level. Proposed indicators can be used in current transition stage for assessment of implementation regional policy and as a base for creation final CE indicators.

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The conversion technology of fly ash into zeolites

Cited by 198 publications

References 31 publications

Application of Mineral Sorbents for Removal of Petroleum Substances: A Review

Application of Mineral Sorbents for Removal of Petroleum Substances: A Review

Zeolitization of Sewage Sludge Ash With a Fusion Method

Circular economy indicators in relation to eco-innovation in European regions

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