Feasibility of recovered toner powder as an integral pigment in concrete

Newlands, Moray D.; Csetényi, László; Li, Zheng

doi:10.1680/jcoma.18.00023

Cited by 6 publications

(3 citation statements)

References 10 publications

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“…The feasibility of recycling waste toner powder in the concrete industry has not been thoroughly investigated. A strength decrease was observed when toner recovered from printer cartridges was used as a pigment for cement to toner replacement of 5, 10, and 20 wt.%, although no impact on the hydration rate of the pastes was observed [26].…”

Section: Introductionmentioning

confidence: 97%

Circular Economy Approach: Recycling Toner Waste in Cement-Based Construction Materials

Peralta Ring,

Cordoba,

Delbianco

et al. 2024

Sustainability

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Based on a waste generated survey by companies in the area of the city of Bahia Blanca (Argentina), the possibility of incorporating part of them in a Portland cement matrix was examined. Among the waste is toner (TW), which is obtained from cartridges used in photocopiers, laser printers, and faxes. This paper aims to analyze the physical and mechanical properties of cement pastes and mortars using toner as a Portland cement replacement compared to a reference sample without toner. The mixes were made with 2.5, 5, 10, and 15 wt.% replacement of cement by toner, and it was measured the flow, normal consistency, setting time, calorimetry, and Frattini test in pastes and mechanical strengths in mortars employing standardized tests. Also, an analysis of the leachate in the curing water was carried out after 56 days to look for contaminating materials. The replacement of up to 5% cement with toner did not produce substantial alterations in the final setting time or mechanical properties. No heavy metals were found in the leachate, so TW can be immobilized in a cementitious matrix as it does not cause leaching above the established limits. Therefore, TW from a local industry can be used in construction materials and could contribute to a reduction of up to 14% of CO2 emissions with a cement replacement of 15% in cement-based materials.

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Section: Introductionmentioning

confidence: 97%

Circular Economy Approach: Recycling Toner Waste in Cement-Based Construction Materials

Peralta Ring,

Cordoba,

Delbianco

et al. 2024

Sustainability

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show abstract

“…Showkat et al [11] utilised WTP for asphalt pavement construction by incorporating it into the asphalt binder. Newlands et al [12] investigated the feasibility of using cyan, yellow, magenta and black WTP to create a range of colour options for mortar and concrete. They evaluated the colour stability in outdoor, indoor, ultraviolet and wet/dry conditions, revealing that WTP, as a pigment, could be mixed to make a range of primary and secondary colours and had good colour stability in all environments without a noticeable impact on the selected properties of hardened concrete.…”

Section: Introductionmentioning

confidence: 99%

Recycling of Waste Toner Powder as Adsorbent to Remove Aqueous Heavy Metals

et al. 2022

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The removal of Cd2+, Zn2+ and Ni2+ from metal solutions onto waste toner power (WTP) was investigated. The influence of parameters such as pH, contact time, initial metal concentration and adsorbent dosage was studied in batch adsorption experiments. Batch equilibrium experiments showed that the highest removal efficiency for Zn2+ and Cd2+ occurs at pH 7, while pH 5 is the most suitable for Ni2+ removal. The amount of metal removed (mg/g) improved when increasing the initial concentration, and sorption of heavy metals reached equilibrium in 24 h. Metals’ uptake increased with increasing adsorbent dosage. The adsorption isotherms of Zn2+, Cd2+ and Ni2+ onto WTP fit the Langmuir better than the Freundlich model with correlation coefficient R2 values ranging from 0.998 to 0.968 and 0.989 to 0.881, respectively. The data showed that the maximum adsorption capacity of heavy metals, amax, ranged from 2.42 to 1.61 mg/g, from 6.22 to 2.01 mg/g and from 3.49 to 2.56 mg/g for Ni2+, Zn2+ and Cd2+, respectively, with the three WTPs used in this study. This adsorbent can potentially be used to remove metal ions from wastewater.

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“…Newland and co-workers [ 18 ] investigated the possibility of using waste toner powder as a pigment in concrete. The results of study showed that replacement of cement with toner at the level 5–10% does not impact significantly on selected properties of concrete.…”

Section: Introductionmentioning

confidence: 99%

Sustainable Management of Calcite Contaminated with Waste Toner Powder in the Construction Industry

et al. 2022

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Due to the highly explosive nature of toners, absorbers are used in toner processing plants to prevent the explosion of toner dust suspension in the air. Usually, finely divided calcite (in the form of a dust) is used. The mixture of toner-calcite is treated as waste and landfilled. The main aim of this study was to investigate the possibility of using toner-contaminated calcite as an additive to concrete. Materials originating from the toner processing plant were analyzed by using TGA, AAS, XRD, FTIR and SEM techniques. Calcite-waste toner powder mixture in amounts 0%, 1%, 5%, 10%, 15% and 20% were used to produce concrete. The results of the study showed that an increase in the amount of calcite contaminated with toner to 20% causes a decrease in compressive strength of concrete by 24–51% depending on material sample. The addition of calcite in amounts up to 5% can be a suitable method of its management.

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Feasibility of recovered toner powder as an integral pigment in concrete

Cited by 6 publications

References 10 publications

Circular Economy Approach: Recycling Toner Waste in Cement-Based Construction Materials

Circular Economy Approach: Recycling Toner Waste in Cement-Based Construction Materials

Recycling of Waste Toner Powder as Adsorbent to Remove Aqueous Heavy Metals

Sustainable Management of Calcite Contaminated with Waste Toner Powder in the Construction Industry

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