recycling ceramic waste

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31 (2012) 112. Sánchez de Rojas, M. Frias, Cem. Int. Then, the mixtures were evaluated based on density, rheology, linear shrinkage, water absorption, and flexural strength. For this test, a plaster cast with an internal surface area of 509 cm² was filled with the ceramic slips, and after 2 min of setting the cast was drained. *  24 (2010) 832. The results showed that WP incorporation decreased the initial viscosity in most formulations, with the exception of WP-100; similarly, the thixotropy factor decreased with WP increase. 151, 1 (2001) 25. Provides an environmentally friendly solution to landfills. These Facts and Figures are current through calendar year 2015. Para compreender a composição de tal resíduo, as amostras foram coletadas, processadas e caracterizadas. Our teams are present on site for the entire demolition process of your furnace, and to coordinate the speedy and efficient evacuation of all waste … [ Links ], 21 A.C. Morelli, J.B. Baldo, Cerâm. Figure 1 Particle size distribution curves of waste powder. X-ray diffraction pattern of the sanitary ware waste. Tabela I Formulação das massas cerâmicas. The model focuses … The goal is overviewing the effects of different kinds of waste on technological behavior, technical performance, and environmental impact of ceramic … (you've got the idea?) March 07, 2019, This is an open-access article distributed under the terms of the Creative Commons Attribution License, Av. In this study, to enhance the recyclability of ceramic materials and glasses, a linear model to minimize natural resource consumption of CerG materials production is proposed. With our ceramic recycling process, we are able to reduce the expense of sending ceramic scrap to landfills. Chemical composition of the sanitary ware waste and raw materials (in wt%). Among the tested WP formulations, the one with the lowest WP content (WP-5) presented the highest flexural strength, which was statistically the same as the one obtained by the control (4.5 MPa). The authors would like to express their gratitude to Minas Gerais State Research Foundation (FAPEMIG APQ3739-16), the National Council for Scientific and Technological Development (CNPq), to the Brazilian Federal Agency for Support and Evaluation of Graduate Education (Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil - CAPES) for their financial support in scientific initiation and master’s degree scholarships (Finance Code 001); and to Santa Clara Louças Sanitárias Ltda for providing the materials and some of the equipment used in this study. 22 (1992) 695. Composição química do resíduo de louça cerâmica e matérias-primas (% em massa). Finally, to analyze the physicomechanical properties of the fabricated materials, three types of test specimens were produced. Moreover, wastes might constitute a cheap renewable raw … The defects in rejected wares include imperfect shapes, cracks, and visual damage to the glaze, defects which do not alter the intrinsic properties of the ceramic material. Figure 4 Flexural strength of test specimens. The Rules for hazardous waste and commercial waste are different to household waste rules. Floor tile waste aggregates (FTWA) in concrete applications can substantially reduce the negative environmental effects and exhaustion of the natural resources. Build. The humidity values obtained were satisfactory, since none exceeded the 5% limit 10. Curvas de distribuição granulométrica do pó do resíduo. Yields an extremely affordable solution to virgin material. Mater. Este resíduo de cacos de louça cerâmica moídos foi usado para substituir o pó de granito utilizado nas massas cerâmicas em 5%, 10%, 25%, 50% e 100%. Fig. 46 (2008) 1501. Kara, E. Özel, IOP Conf. [ Links ], 16 N.S. [ Links ], 4 NBR 10004, “Resíduos sólidos - classificação”, Ass. Mater. 3. Técn., Rio Janeiro (2004). During this period, major environmental problems surfaced with rapid and serious consequenc es. 4). L’objectif de cet article est de montrer comment l’audit environnemental concilie des logiques institutionnelles hétérogènes afin de contribuer au courant des micro-fondations du néo-institutionnalisme. 34, 1 (2012) 48. In the following, a process chain consisting of various comminution steps, an agglomeration process and the necessary thermal stabilization is presented. Independent of the type of ceramic being manufactured, the initial slip (or another kind of mix) includes three types of materials, hence the name ‘triaxial ceramics’, a plastic material (clays) which facilitates casting, a fluxing agent (feldspar) that assists melting and helps to vitrify the structure, and a non-plastic material (quartz) to provide structural strength 2. Amazonas 5253, 30421-169, Belo Horizonte, MG, Brazil. These are typically achieved through characterization that determines the particle-size distribution, composition, crystalline phases and material morphology 3. By recycling or reusing these ceramics, large amounts of waste is diverted from landfill as well as helping reduce the demand for natural resource. To understand the composition of such SWW, samples were collected, processed, and characterized. Norm. PAPER PACKAGING AND CARDBOARD. However, the recycling of this type of waste as a raw material in the process responsible for generating it has not been thoroughly investigated, as there are no applicable standards yet on its reuse. After the comminution process, the powder generated from the ceramic shards had white color and a silky touch; also, it was very fine and presented a heterogeneous particle-size distribution. As misturas foram avaliadas quanto à densidade, reologia, retração linear, absorção de água e resistência à flexão. In contrast, cones made from granite and WP presented flux material behavior, with very consistent structure and smooth texture, vitreous shine on the former and matte finish on the latter. In producing sanitary ware, despite any improvements made to the process, there is always a percentage deemed inappropriate for sale. From the ecological point of view, the recycling of industrial wastes is becoming a priority, as a result of an ever-increasing environmental awareness 2. Journal of Sustainable Cement-Based Materials: Vol. Although the replacement of more than 5% of granite reduced the flexural strength, no tested specimen was below the minimum value required by the industry. Paper packaging is recycled into new boxes, paper towels, tissues, paper-based plant pots, the paper cover for drywall … Paper is also entry-level recycling: all packaging made of paper and cardboard, newspapers, magazines, waste paper, paper bags, etc, etc. Metal. In other words, such recycling can be defined as a procedure, which is used for reprocessing such waste into new products. See our Sustainable Materials Management web area for relevant information and our S… The compressive strength decreased if the ceramic waste … Ceramics production can be emissions intensive and involves a number of toxic substances used as glazes, but recycling or reusing ceramic products can decrease these outputs. The results from the LG analysis, presented in Fig. Ainda que a substituição de granito superior a 5% tenha reduzido a resistência à flexão, nenhum corpo de prova testado apresentou resistência abaixo do mínimo exigido pela indústria. Bras. Sánchez de Rojas, Constr. Cylinders with 200 mm in length and 15 mm in diameter were used for the three-point flexural strength test. [ Links ], 7 C. Medina, M. Frías, M.I. The result of oxide composition obtained by energy dispersive X-ray (EDX) spectroscopy is listed in Table II. Concr. Belostotskaya, V.V. Build. Ceramic products such as paving and roof tiles are common waste products of the construction and demolition industry. 46 (1989) 36. In this test, cones made from phyllite and clays resulted in a ‘sandy’ texture that was easily crumbled apart, which is characteristic of refractory materials. Therefore, one of the first steps in recycling wastes into sanitary ceramics is determining which of the three behaviors the waste exhibits. They include coal power station ash, bottom-ash and fly ash from waste incinerators, slag from steel production, and glass cullet and combustion dusts. Table III Characterization of ceramic slips and sanitary ware pieces. The SEM analyses were performed with low vacuum and magnification capacity up to 30000 times and a digital zoom factor of 4x, using an accelerating voltage of 15 kV and a backscattered electron (BSE) detector. Santos, E. Longo, Cerâmica 59, 349 (2013) 147. [ Links ], 23 G.S. Res. Toby, Can. [ Links ], 17 S.M. NEPCO can provide customers with two main options for dealing with their ceramic scrap… NEPCO can accept ceramic scrap / waste at little or no charge, and in some cases, NEPCO can even offer compensation for premium ceramic waste material. The pyroplastic deformation test consisted of placing the head of the specimen between two layers of refractory material, while the tail was in suspension; this allowed the tail to deform as liquid-phase was produced during sintering; an increase in deformation represented an increase in the presence of liquid-phase, and thus correlating to flux material content in the mixes 15. Therefore, as it is classified as fired clay, this ceramic waste is a material with high strength and resistance to wear 1), (3. Int. Measurements of the viscosity and rheological properties showed significant deviation from the standard values exhibited by the control samples, as can be seen in Table III. The residue percentage, which represented the fraction of solids from a suspension that was retained after size exclusion through a 44 µm sieve, evaluated the degree of slip pulverizing. Mat. The third specimen, for testing pyroplastic deformation and water absorption, had a length of 290 mm, with double the thickness at the initial 100 mm (head) and tabular shaped for the remaining length (tail). Many waste ceramic materials and glasses (CerG) such as glass, concrete, pottery, porcelain, brick, and tiles are landfilled because they have been recognized to be less conducive to recycling. At this point, the deposited mass still had a pearl shine, which slowly became matte as the plaster absorbed water; the time taken for the ceramic mass to present a completely matte finish was recorded as the dying time. Table II Chemical composition of the sanitary ware waste and raw materials (in wt%). Palavras-chave: cerâmica; colagem barbotina; louça sanitária; resíduo; sustentabilidade. Ceramics, including dishes, are recyclable for uses in art projects, driveway underlayment and gravel pathways. Note: in each slip, 13.50% of clay and 64.0% phyllite were used. List of ceramic filter Manufacturers for the Waste and Recycling industry This category only includes cookies that ensures basic functionalities and security features of the website. In order to evaluate how the WP substitution degree could influence the ceramic slips, tests of density, residue percentage (44 µm sieve), and rheology were performed, including tactile and detachment evaluations. Est. [ Links ], 24 A.W. Conc. Figure: 1. Mineral. [ Links ], 13 Brookfield viscometer, “Operat. Figure 3 Scanning electron microscopy images of the sanitary ware waste. Técn., Rio Janeiro (2003). The micrographs shown in Fig. Once sorted, the materials are prepared for the next stage of their recycling journey. [ Links ], 6 I. Guerra, I. Vivar, B. Llamas, A. Juan, J. Moran, Waste Manage. [ Links ], 14 Brookfield, “More solutions to sticky problems”, https://www.brookfieldengineering.com. Ceramic waste powder Source: Kohinoor tiles, Himmatnagar, Gujarat Figure: 2. The rationale behind this work is to look at recycling from the industrialist's point of view. Figure 2 X-ray diffraction pattern of the sanitary ware waste. Mineral. Recycling in South Africa is a largely different affair to how it’s done by some countries in the Northern Hemisphere. Given that the fraction of sanitary ware that is discarded is usually slightly less than 5% of total production, applying the WP-5 formulation as a recycling process could significantly reduce the volume of broken pieces in the crushing yard and landfill; in addition, higher degrees of substitution could be enough to consume all the discarded pieces, thus reducing environmental impacts and costs of disposal. Nevertheless, all specimens were far below the limit of 0.5% for water absorption established by standard organizations 11. [ Links ], Received: This study showed that some parameters that define the quality of ceramic slips for use as sanitary ware were dependent on the degree of substitution of granite by waste powder (WP). When it comes to sanitary ware production, focusing on materials that are used in the ceramic slip, numerous parameters must be verified. Antao, I. Hassan, J. Wang, P.L. [ Links ], 3 C. Medina, M.I. As expected, the composition of the WP reflected a mix of the raw materials used by the industry, with the addition of oxides from dyes used for glazing. Liu. Resistência à flexão dos corpos de prova. Recycling ceramic waste as a raw material in sanitary ware production, Reciclagem de resíduo cerâmico como matéria-prima na produção de louças sanitárias, A. C. S. Bezerra1  Tabela II Composição química do resíduo de louça cerâmica e matérias-primas (% em massa). Prof. Almeida Prado, 532 - IPT - Prédio 36 - 2º Andar - Sala 03. Several papers studied applications for sanitary ceramic waste, especially in the field of construction, as an aggregate to concrete 1), (3), (6)- (8. The 2020 report reveals that a record 53.6 million Mt of e-waste were generated worldwide last year, a 21% increase in five years. In the scope of this work, a recycling process was developed that enables treatment of masonry brick rubble and waste streams from the ceramics industry. Ind. Furthermore, the ceramic slips must meet standards regarding density and viscosity, and the final product must be in accordance with standards for linear shrinkage, flexural strength, and water absorption 9)- (11. M/85-150-P700”. [ Links ], 18 D. Balzar, H. Ledbetter, Am. Tabular specimens of 290 mm length were measured immediately after slip casting and the values were compared to their lengths after drying and sintering for linear retraction. All formulations applied in the tests, including the control, are described in Table I. Instruct., Manual no. Figura 2 Difratograma de raios X do resíduo de louça cerâmica. Figura 3 Imagens de microscopia eletrônica de varredura do resíduo de louça cerâmica. Han, L.W. The ceramic industry is going to be deeply involved in the transition to a circular economy. As well as reducing the volume of waste going to landfill sites, recycling and composting your domestic waste helps to minimise charges for waste collection. 38 (1981) 194. In contrast, when comparing setting rates, there was a direct relation to WP incorporation, with the rate increasing as a higher WP fraction was used in the mix. The XRD measurements were performed using a copper X-ray tube with 40 kV accelerating voltage and 30 mA current in the continuous scanning mode with a 2θ range from 10º to 80° at a rate of 2 °/min. This is a decisive factor when it comes to applying recycled products for the production of new materials, where the goal is to produce a similar or better product. Sci. All phases were identified using the software Match! So, plastic recycling was introduced, to produce new products from discarded plastic scrap and waste. By 2030, this amount is expected to reach 74 million Mt—almost a doubling in just 16 years. 8, 3 (2003) 42. 2 shows a well-defined presence of quartz phases (SiO2, Crystallography Open Database - COD 9013321) (17 in the sample diffractogram. EUD UUVLW\ (UAEU), D D WKL HQWLW “Recycling Ceramic Waste Powder and its Usage as an Alternative Ingredient in Concrete”, hereby, solemnly declare that this thesis is my own original research work that has been done and prepared by me under the supervision of Prof. Amr Salah El-Dieb, in the College of Engineering at UAEU. March 04, 2019; Accepted: Resultados de densidade, absorção de água e retração linear não mostraram diferenças significativas em relação às amostras de controle. They say that technology advances at an exponential pace, meaning that the time it takes for us to double our relative amount of technological advancement is shrinking with each major technological milestone. In short, nobody wants to be left behind as better ceramic products are created which in turn is creating a huge demand for ceramic waste for recycling purposes. Table III shows that density values for all the ceramic slips; they were in accordance with the range commonly used in manufacturing processes, which is around 1.80 g/cm³ 21. When it comes to sanitary ware production, focusing on materials that are used in the ceramic slip, numerous parameters must be verified. Redirecting waste … 20 (2017) 637. Souza, S.R. Miner. What is even more shocking, however, is that recycling is not all good. Teixeira, G.T.A. Hazardous Waste at the Tip or Recycling Centre. Bougher, Cerâm. Once determined which material to be substituted, different formulations of ceramic slips were prepared and labeled according to the degree of substitution of granite by the WP, therefore the labels were WP-5, WP-10, WP-25, WP-50 and WP-100. 40, 1 (2014) 307. Ganenko, Z.Y. J. The setting rate defines the speed at which a ceramic slip is accumulated on the porous surface of a plaster cast, while the drying time is the time required for excess water to be drained as the mass on the plaster cast loses its pearl shine. The recycling of waste in ceramic manufacturing is theoretically beneficial because it is possible to absorb great amount of waste, also hazardous, that would otherwise be disposed off in landfill. The flexural strength tests indicated that all formulations had values above the minimum strength required, with an excellent performance by the WP-5, which was statistically equivalent to the control. Feng, S.L. The ceramic waste aggregate should be pre-saturated by water to offset its high absorption. Here, the materials are sorted into their respective streams (glass, paper, cardboard, plastic, aluminum and steel) by both manual and automatic sorting processes. On the other hand, the rheology tests showed that adding WP boosted rheological performance as a result of a lower thixotropy index. A significant type of industrial waste that requires attention is the ceramic waste, with the majority of this waste coming from the disposal of defective and broken ceramic pieces (1. [ Links ], 20 H. Zhao, D. Darwin, Cem. (2019). Silicate residues are a significant group of materials when considering the recycling and reuse of industrial waste. Mullite phase (Al6Si2O13, COD 9001567) (18 was also detected; this is a stable phase accountable for mechanical strength in sintered clay minerals, and is formed starting at 950 ºC up to 1100 ºC 19, which are compatible with the firing curve in use by the industry that has a peak temperature of 1200 ºC. 29, 2 (2009) 643. In order to avoid breakages during handling, the industry usually adopts 2 MPa as the minimum flexural strength for raw pieces 9; consequently, regardless of the decreasing in strength, all WP formulations complied with the minimum requirement for flexural strength in an industrial scenario. 3 were in accordance with the LG analysis, as the material presented heterogeneous particle size distribution, with a significant fraction of lamellar crystals with sharp edges. 3, pp. The XRF was performed under a regular air atmosphere and a collimator of 10 mm. The materials contained in your yellow lid (recycling) bin are transported by the City's waste trucks to a Materials Recovery Facility. Bras. http://orcid.org/0000-0003-1670-2376, 1Centro Federal de Educação Tecnológica de Minas Gerais, Av. Musical greeting cards with batteries (contact the Recycling Council of BC for battery and e-waste recycling options) Rubber bands; Plastic bags used to cover newspapers/flyers (recycle at a Recycle BC depot) Paper Packaging and Cardboard. The fact that water absorption results did not show clear correlation to WP levels was due to standardized test of water absorption, which involves keeping samples in boiling water, not being able to ensure complete saturation of test specimens 24; therefore, the values obtained from this test did not necessarily reflect a difference in surface porosity among the formulations. These dimensions were in accordance with those for standard raw materials used in the ceramic industry 16. Innocentini, E. Mendes, T. Gomes, A. Demarch, O.R.K. While the drying shrinkage remained the same for all specimens, the total shrinkage increased for the WP formulations as a result of higher firing shrinkages. Necessary cookies are absolutely essential for the website to function properly. In addition, according to the NBR 10004:04 solid waste classification 4, this ceramic waste is classified as inert, which facilitates its handling for reuse. But although its definition is simple, which is re-using old or waste products or turning them into something completely new, getting it done is anything but. For water absorption tests, an 80 mm section of the specimen’s tail was cut, weighted while dried, placed in boiling water for 2 h, rested in that water for 24 h, and then weighted again 11. Norm. But opting out of some of these cookies may have an effect on your browsing experience. How is Plastic Recycling Beneficial The process of recycling is basically aimed at environmental conservation. Eng. Industrial Waste Water Reuse with Crystar® Ceramic Membrane Filters Crystar® Filtration Technology uses advanced recrystallized silicon carbide membranes to improve water recycling processes or to make them feasible in some of the most demanding industrial sectors worldwide. [ Links ], 2 V. Medri, E. Landi, Ceram. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are as essential for the working of basic functionalities of the website. Prêmio Mérito Amb., Fed. Dramatically reduces waste disposal costs. belong in the blue bins. It was concluded that ceramic waste could be used as partial replacement of natural coarse aggregate. Difratograma de raios X do resíduo de louça cerâmica. However, the main obstacle to a widespread recourse to waste recycling is the lack of knowledge about its effect in ceramic tile manufacturing. These results reflected the ones from firing cone tests, restating that the WP acted as a flux material, which formed liquid-phase during sintering and filled open pores, thus increasing the ceramic densification. Therefore, one of the first steps in recycling wastes into sanitary ceramics is determining which of the three behaviors the waste exhibits. The results for viscosity and pyroplastic deformation in specimens containing the ceramic waste were better than the reference slip used in a production line. Are Ceramic Dishes Recyclable?. Kargina, N.S. The recycling of this ceramic waste back into its production process could have some advantages: it does not require high transportation costs; it could also decrease expenses in raw material consumption and waste disposal in landfills. [ Links ], 15 D.Y. We'll assume you're ok with this, but you can opt-out if you wish. This is especially important for the production line, where the stabilization of ceramic slips is crucial and usually maintained through constant stirring.

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