Techno-economic assessment of processing the cellulose casings waste

Maroušek, Josef; Hašková, Simona; Zeman, Róbert; Žák, Jaroslav; Vaníčková, Radka; Maroušková, Anna; Váchal, Jan; Myšková, Kateřina

doi:10.1007/s10098-015-0941-x

Cited by 45 publications

(6 citation statements)

References 24 publications

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“…This characteristic is not very suitable for coating mortars, as permeability is related to material susceptibility to degradation. (41) demonstrated that mortars with capillary coefficients above 35 g/dm²•min 1/ ² have their performance impaired at the medium and long term, which is not therefore, the case obtained in this study.…”

Section: Technological Tests At Hardened Statecontrasting

confidence: 50%

Replacement of hydrated lime by lime mud-residue from the cellulose industry in multiple-use mortars production

2022

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The pulp and paper industry increases every year in Brazil, providing an important country position in international market due to its production volume. However, because of this increasing, a large volume of wastes is generated. One of them is a lime mud, resulting from the Kraft chemical pulping production process. Thus, the aim of this study was to evaluate the replacement of hydrated lime by lime mud on laying and coating mortars production, in order to verify its feasibility for possible application in civil construction industry. The 100% hydrated lime replacement mortar reached a 28-day compressive strength of 5.84 MPa. Finally, the results obtained in the experimental program showed that the 100% hydrated lime replacement mortar by lime mud meets the normative requirements for multiple-use mortars.

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Section: Technological Tests At Hardened Statecontrasting

confidence: 50%

Replacement of hydrated lime by lime mud-residue from the cellulose industry in multiple-use mortars production

2022

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“…In tertiary recycling, polymer waste is converted into new products with properties completely different from the original substance, namely converting it into liquid and gaseous fractions through thermal or catalytic degradation (Astrup et al, 2009; Nisar et al, 2019; Rotliwala and Parikh, 2011). Pyrolysis is an attractive method owing to its simplicity and ability to convert mixed feedstock into valuable products (Koo and Kim, 1993; Maroušek et al, 2015; Ni and Chen, 2014).…”

Section: Introductionmentioning

confidence: 99%

Pyrolysis of polystyrene waste for recovery of combustible hydrocarbons using copper oxide as catalyst

et al. 2020

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The present work is focused on pyrolysis of polystyrene waste for production of combustible hydrocarbons. The experiments were performed in an indigenously made furnace in the presence of a laboratory synthesised copper oxide. The pyrolysis products were collected and characterised. The Fourier transform infrared spectra showed that the liquid fraction contains C–H, C–O, C–C, C=C and O–H bonds, which correspond to various aliphatic and aromatic compounds. Gas chromatography–mass spectrometry traced compounds ranging from C1 to C4 in the gaseous fraction, whereas in the liquid fraction 15 components ranging from C3 to C24 were detected. From the results it has been concluded that CuO as a catalyst not only increased the liquid yield but also reduced the degradation temperature to great extent. Fuel properties of the pyrolysis oil were determined and compared with standard values of commercial fuel oil. The comparison suggested potential application of pyrolysis oil for domestic and commercial use.

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“…This property is directly related to durability, making the use of mortars unfeasible when great values are obtained [ 11 ]. It has been reported that greater capillary water absorption values than 3.5 Kg/(m 2 /min 0.5 ) impair the performance of mortars at medium and long term [ 29 ]; all values presented were lower than that threshold. EN 998-1 Specification sets a maximum of 0.2 or 0.4 Kg/(m 2 ·min 0.5 ) for class W c 1 and W c 2, respectively, according to the capillarity water absorption classification, for its use as coating mortar, repair mortar, or thermal isolation mortar, and no restriction for regular, light, or coloured rendering and plastering mortar.…”

Section: Resultsmentioning

confidence: 99%

Performance of Sustainable Mortars Made with Filler from Different Construction By-Products

et al. 2022

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One way to contribute to sustainability in the construction sector is through the incorporation of construction by-products from their own activities. This work intends to extend the possibilities for enhancement of these by-products through the incorporation of four different ones, as fillers, in mortar production. The influence of these incorporations in mortar production was compared with a reference mortar with siliceous filler in its fresh state; workability, entrained air content and fresh density, and in its hardened state; capillary water absorption, water vapour permeability and shrinkage (up to 91 days); and adhesive, compressive, and flexural strength; the last two were studied over time (up to 180 days). Despite the reduction in compressive strength, both in the short and long term, there was a gain in adhesive strength when the construction by-products were incorporated. Regarding the physical properties and durability studied, no relevant differences were found with respect to the reference mortar. According to the European Specifications, these mortars could be used as regular or coloured rendering and plastering mortars, and masonry mortars, and these findings promote the circular economy in the construction sector.

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Techno-economic assessment of processing the cellulose casings waste

Cited by 45 publications

References 24 publications

Replacement of hydrated lime by lime mud-residue from the cellulose industry in multiple-use mortars production

Replacement of hydrated lime by lime mud-residue from the cellulose industry in multiple-use mortars production

Pyrolysis of polystyrene waste for recovery of combustible hydrocarbons using copper oxide as catalyst

Performance of Sustainable Mortars Made with Filler from Different Construction By-Products

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