Evaluation of eggshell wastes in office paper production

Tutuş, Ahmet; KILLI, Ufuk; Çiçekler, Mustafa

doi:10.1007/s13399-020-00768-0

Cited by 10 publications

(13 citation statements)

References 25 publications

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“…The need for alternative sources of fiber and more sustainable production methods is becoming increasingly pressing in light of the global fiber shortage . This has been noted by various studies. − …”

Section: Introductionmentioning

confidence: 99%

“…Additionally, calcium carbonates are highly soluble in water, making them easy to work with during the papermaking process. These characteristics of calcium carbonate make it an attractive option for papermakers looking to improve the properties of their paper . Ground calcium carbonate (GCC) is a filler material widely used in the paper industry produced through a process of grinding natural limestone and mixing it with water.…”

Section: Introductionmentioning

confidence: 99%

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Improving the Optical Properties and Filler Content of White Top Testliners by Using a Size Press

2023

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This study aims to investigate the impact of coating with ground calcium carbonate (GCC) on the optical properties and filler content of white top testliner (WTT) papers. The paper properties investigated include brightness, whiteness, opacity, color coordinates, and yellowness. The results showed that the amount of filler mineral used in the coating process significantly affected the optical properties of the paper. The use of 15% total solids of GCC in the coating suspension resulted in the highest level of whiteness and improved the brightness value by 6.8%. The use of 7% total solids of starch and 15% total solids of GCC reduced the yellowness index by 85%. However, the use of only 7 and 10% total solids of starch had an adverse effect on the yellowness values. The surface treatment led to a significant increase in the filler content of the papers, with a maximum of 23.8% achieved using a coating suspension with 10% total solids of starch solution, 15% total solids of GCC suspension, and 1% dispersant. The starch and GCC in the coating suspension were found to have a direct impact on the filler content of the WTT papers. The addition of a dispersant improved the uniform distribution of the filler minerals and increased the filler content of the WTT. The water resistance of WTT papers increases due to the use of GCC, while their surface strength remains at an acceptable level. The study demonstrates the potential benefits of the surface treatment in terms of cost savings and provides valuable information on the impact of the treatment on the properties of WTT papers.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Improving the Optical Properties and Filler Content of White Top Testliners by Using a Size Press

2023

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“…The fillers used to improve the paper properties are therefore of great importance. (Lourenço et al, 2019;Nikkhah Dafchahi et al, 2021;Tutus et al, 2020;Zhang et al, 2013). Since these non-fiber inorganic materials are much cheaper compared to fiber materials, they are highly preferred because they reduce production costs and provide faster drying compared to fiber raw materials, thus increasing production (Karademir et al, 2013;Lee et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…It has an important position in the filling and white pigment markets. Calcite can be prepared with lower cost, preserves the mechanical characteristics of the paper, provides to use more filler in paper structure and improves whiteness, opacity and air permeability of papers without losing the brightness (Shen et al, 2010;Tutus et al, 2020). Calcite filled papers can keep their whiteness longer than filler-free papers.…”

Section: Introductionmentioning

confidence: 99%

A study on effect of modified calcite on filler retention and mechanical properties of fluting papers

Sözbir

Çiçekler

2022

Bilimsel Madencilik Dergisi

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In this study, the use of modified calcite as a filler in fluting paper production was investigated and its effects on retention and some mechanical properties of the papers were determined. Ground calcium carbonate (GCC/calcite) and cationic starch were used for modification. Filler modification with alum effect of CPAM resulted in starch-calcite encapsulation. Produced modified calcite (MC) was used in fluting paper production at certain dosages as filler. Simultaneously, paper was made with unmodified calcite (UC), and the effects of modified calcite on the paper properties and filler retention were studied. The results of this study indicated that the use of 10% MC improved filler retention and provided approximately 23% more retention than the use of 10% UC. In addition, mechanical properties and air permeability values of MC-filled papers were higher than those of UC-filled papers. With the use of MC in fluting papers production, better filler retention was achieved, while the reduction in mechanical properties caused by the addition of filler can be minimized. Besides, impurities in white water can be minimized by reducing the filler dosage given during paper production.

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“…Considering that the mussel shell represents approximately 75% by weight, the annual production of mussel shell waste can be evaluated at 1.5 × 10 6 ton. Although some studies have focused on the use of these food wastes in different applications, such as catalysts for biodiesel production [ 10 , 11 , 12 ], papermaking [ 13 , 14 ], the removal of heavy metals and soluble microbial products from wastewater [ 15 , 16 ] or the synthesis of construction materials [ 17 ], hydroxyapatite [ 18 , 19 ] or active carbon [ 20 ], the current situation is that most eggshell and mussel shell waste originating worldwide is destined for landfills. Therefore, based on the concept of a circular economy, research on new ways of valorization for this type of waste is of great importance, and the manufacture of glass lightweight aggregates could be a suitable alternative.…”

Section: Introductionmentioning

confidence: 99%

Glass Lightweight Aggregates from Glass Cullet and Mining and Food Industry Carbonate Waste

2022

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Lightweight aggregates are extensively used in construction and other industrial applications due to their technological characteristics. The extraction of natural aggregates results in serious environmental effects. Thus, within the circular economy concept, the valorization of waste through the optimization of materials and product design is encouraged. In this work, glass lightweight aggregates were prepared from mixtures of white glass cullet and carbonate wastes from mining (wastes originating from the extraction, manufacture and marketing of magnesite and its derivatives) and the food industry (eggshell and mussel shell). The effects of different processing parameters, such as the particle size of the base glass, percentage of the blowing additive, shaping method, heating rate, temperature and processing time, were evaluated. The results indicate that the mineralogical composition of the blowing agent and the particle size of the base glass are the two processing parameters with the greatest impact on expansion efficiency. Thus, glass artificial aggregates were obtained with characteristics similar to those of commercial products (density values ranged between 0.3 and 0.8 g/cm3 and mechanical strength between 0.7 and 1.5 MPa) from thermal shock expansion treatments in the temperature range 800–900 °C and with dwell times no longer than 15 min.

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Evaluation of eggshell wastes in office paper production

Cited by 10 publications

References 25 publications

Improving the Optical Properties and Filler Content of White Top Testliners by Using a Size Press

Improving the Optical Properties and Filler Content of White Top Testliners by Using a Size Press

A study on effect of modified calcite on filler retention and mechanical properties of fluting papers

Glass Lightweight Aggregates from Glass Cullet and Mining and Food Industry Carbonate Waste

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