Kalsiyum Kaynağı Olarak Yumurta Kabuğu Atığı ve Genleştirilmiş Polistiren Granülleri Kullanılarak Gözenekli Anortit Seramik Üretimi

Kayalar, Merve Torman; Erdoğan, Gökhan; Yavaş, Ahmet; Güler, Saadet; Sütçü, Mücahit

doi:10.2339/politeknik.911758

Cited by 2 publications

(3 citation statements)

References 34 publications

(47 reference statements)

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“…All areas of society generate waste, from large industries to small households. Studies in various industry fields emerged in recent years, where waste was used to form materials with specific characteristics [12][13][14][15][16][17][18]. For example, Faridmehr et al used fly ash, palm oil fly ash, waste ceramic powder, and granulated blast-furnace slag for alkali-activated mortars with promising environmentally friendly features, and appropriate strength and durability [19].…”

Section: Introductionmentioning

confidence: 99%

“…Studies show that there is huge potential for absorbing waste and saving raw materials when using waste material to produce ceramics: some of the most prominent waste materials are inorganic-fly ash, various sludges and slags, and mud, while others are organic-rice husk, rice-husk ash, eggshells and coffee grounds [11,21,22]. Torman et al produced lightweight anorthite ceramics utilizing admixtures of eggshell waste, fireclay, and expanded polystyrene, and showed these ceramics could be suitable for use in various applications requiring elevated temperatures [17]. Cao et al, used waste fly ash and natural bauxite, with AlF 3 and V 2 O 5 as additives, to obtain a mullite ceramic membrane support with increased open porosity and without strength degradation [23].…”

Section: Introductionmentioning

confidence: 99%

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Reusing Waste Coffee Grounds in the Preparation of Porous Alumina Ceramics

Mustafa¹,

Gabelica

Mandić

et al. 2022

Sustainability

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Porous ceramics can be used in various industrial applications, such as thermal insulation, orthopedic implants, high-temperature filtration, lightweight structural components, and catalyst supports, etc., and can be obtained using various methods. In this study, the sacrificial fugitive method was used to prepare a porous alumina ceramic. The appropriate amount of sacrificial fugitive was combined with raw ceramic powder as a pore-forming agent, and was then evaporated or burned out either before or during the sintering process to create the desired pores. Various materials can be used as pore-forming agents; in this work, eco-friendly waste coffee grounds (WCG) were utilized. First, alumina ceramic green bodies were prepared via slip casting of 60 wt. % alumina suspensions with five different amounts of WCG (0 wt. %, 1 wt. %, 5 wt. %, 10 wt. % and 15 wt. %) and the dispersant Dolapix (0.2 wt. %), and using PVA (0.5 wt. %) as a binder for all solutions. The effect of the various amounts of WCG on the alumina ceramic green bodies, and subsequently on the obtained sintered ceramics, was tracked and validated through different analyses. Suspension viscosity was determined through a rotational viscometer. Simultaneous differential thermal and thermogravimetric (DTA/TGA) analyses were used to observe the thermal decomposition of WCG and to determine the sintering regime. After sintering, the density, porosity, and shrinkage of the samples were examined and calculated. In addition, the phase composition and crystallite size of all sintered samples were determined by powder X-ray diffraction (PXRD) analysis, as well as their morphology and composition using Scanning Electron Microscopy (SEM) equipped with energy dispersive X-ray spectroscopy (EDS). The results show that density decreased from 3.743 to 2.172 g/cm3 and porosity increased from 6.12% to 45.52%, both with the increasing amount of WCG (from 0 wt. % to 15 wt. %).

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Reusing Waste Coffee Grounds in the Preparation of Porous Alumina Ceramics

Mustafa¹,

Gabelica

Mandić

et al. 2022

Sustainability

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“…Additionally, research revealed that calcium oxide in eggshell is a more uniform morphology; further, its pozzolanic activity improves mechanical bonding [53]. Also, an increase in the density with the amount of eggshells created a more compact structure and improved strength up to an optimum value.…”

Section: -Days 28-days 56-daysmentioning

confidence: 99%

Çeşitli Endüstriyel ve Yumurta Kabuk Atıklarının Sürdürülebilir İnşaat Sektörü için Kullanılması

Aydın

2023

Journal of Polytechnic

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The alternative composites’ production alleviates the serious problem generated by global warming. Methods to reduce the amount of cement used in concrete production, for example, are being investigated to determine how to reduce carbon dioxide emissions in many applications. Egg shells and various industrial wastes, which are recommended to use in the construction sector at an appropriately high rate, also cause serious environmental damage. Bottom ash (BA) and marble powder (MP) wastes are used today in civil engineering applications. In addition, it is important to increase the use of eggshells due to their rich calcium carbonate content. In this work, BA and MP wastes were blended with eggshells to produce cement paste composites. Two different sets of composites were prepared during this study. The composites were prepared with cement (80%), BA (20%), and MP (20%) wastes by weight with 0.3%, 0.75%, 1.5%, and 2.5% eggshell waste. The fresh (flow table), physical (dry unit mass, apparent specific gravity, and porosity), mechanical (unconfined compressive strength and flexural strength), and durability (water absorption, seawater resistance) tests were conducted. According to the experimental results, the composites can be classified as lightweight construction materials. The test results showed that 0.75% eggshell by weight of cement in bottom ash and marble powder can be used as an optimum value for better performance. The bottom ash mixtures groups are higher water absorption and porosity values when referring to the marble powder mixture groups. The highest compressive strength value was found at 56.03 MPa in the MP mixture group and 52.79 MPa in the BA mixture groups with these optimum eggshell combinations at 56 days. The MP mixture group showed better resistance to seawater when referring to the bottom ash blended mixtures. Laboratory-produced composites are possible candidates for cost-effective and environmentally friendly building materials. The eggshells have a promising alternative binder for concrete in the near future and they are utilized together with industrial wastes such as BA and MP in sustainable concrete construction.

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Kalsiyum Kaynağı Olarak Yumurta Kabuğu Atığı ve Genleştirilmiş Polistiren Granülleri Kullanılarak Gözenekli Anortit Seramik Üretimi

Abstract:  Utilization of eggshell waste and EPS granules in porous anorthite ceramic production  Determination of optimum additive rates and production temperatures  Investigation of the physical and mechanical properties of the ceramics produced

Cited by 2 publications

References 34 publications

Reusing Waste Coffee Grounds in the Preparation of Porous Alumina Ceramics

Reusing Waste Coffee Grounds in the Preparation of Porous Alumina Ceramics

Çeşitli Endüstriyel ve Yumurta Kabuk Atıklarının Sürdürülebilir İnşaat Sektörü için Kullanılması

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