Expanded polystyrene waste application for improving biodiesel environmental performance parameters from life cycle assessment point of view

Rajaeifar, Mohammad Ali; Abdi, Reza; Tabatabaei, Meisam

doi:10.1016/j.rser.2017.02.032

Cited by 38 publications

(20 citation statements)

References 212 publications

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“…The construction industry is one of the activities with the greatest consumption of raw materials together with large production of waste [8][9][10][11][12][13][14]. Specifically, the broad use of plastics in building/construction applications, especially expanded polystyrene (EPS), requires new and low environmental impact approaches for the optimization of the production processes and the reduction of by-products [15][16][17][18]. For this reason, recycling operations can be considered important tasks to increase the sustainability of a material which is converted into a new resource, the so-called secondary raw material.…”

Section: Introductionmentioning

confidence: 99%

“…For this reason, recycling operations can be considered important tasks to increase the sustainability of a material which is converted into a new resource, the so-called secondary raw material. For the purpose, expanded polystyrene is a completely recyclable material, widely used because of cost-effectiveness, versatility and performance characteristics [18][19][20][21]. It is manufactured from styrene monomer using a process during which pentane gas is added to the polymer in order to induce expansion with the following production of spherical beads.…”

Section: Introductionmentioning

confidence: 99%

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Recycled Expanded Polystyrene as Lightweight Aggregate for Environmentally Sustainable Cement Conglomerates

2020

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In the present work the rheological, thermo-mechanical, microstructural, and wetting characteristics of cement mortars with recycled expanded polystyrene (EPS) were analyzed. The samples were prepared after partial/total replacement of the conventional sand aggregate with EPS having different grain size and size distribution. Lightness and thermal insulation were relevant features for all the bare EPS composites, despite the mechanical strengths. Specifically, EPS based mortars were characterized by higher thermal insulation with respect to the sand reference due to the lower specific mass of the specimens mainly associated with the low density of the aggregates and also to the spaces at the EPS/cement paste interfaces. Interesting results in terms of low thermal conductivity and high mechanical resistances were obtained in the case of sand-EPS mixtures although characterized by only 50% in volume of the organic aggregate. Moreover, sand-based mortars showed hydrophilicity (low WCA) and high water penetration, whereas the presence of EPS in the cement composites led to a reduction of the absorption of water especially on the bulk of the composites. Specifically, mortars with EPS in the 2–4 mm and 4–6 mm bead size range showed the best results in term of hydrophobicity (high WCA) and no water penetration in the inner surface, due to low surface energy of the organic aggregate together with a good particle distribution. This was indicative of cohesion between the ligand and the polystyrene as observed in the microstructural detections. Such a property is likely to be correlated to the observed good workability of this type of mortar and to its low tendency to segregation compared to the other EPS containing specimens. These lightweight thermo-insulating composites can be considered environmentally sustainable materials because they are prepared with no pre-treated secondary raw materials and can be used for indoor applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Recycled Expanded Polystyrene as Lightweight Aggregate for Environmentally Sustainable Cement Conglomerates

2020

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“…The convenient solution of burning waste expanded polystyrene (WEPS) causes air pollution and emits carbon dioxide, which contributes to climate change. Hence, a simple, convenient method needs to be developed to increase the added value of these waste materials [9]. We fabricated carbon dots (CDs) from WEPS and observed fascinating tunable photoluminescence (PL) in the solid state [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

High production-yield solid-state carbon dots with tunable photoluminescence for white/multi-color light-emitting diodes

et al. 2019

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“…Only 30% of the EPS were recycled after use. The rest were either disposed in landfills or incinerated, which causes serious environmental pollution [13,15]. Waste EPS beads have significantly lower density (0.028 kg/m 3 ) and thermal conductivity (TC, 0.042 W/m•K) than other lightweight aggregates, such as crumb rubber (1.05-1.20 kg/m 3 ) and shale aggregates (0.6-0.7 kg/m 3 ) [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Structural Applications of Thermal Insulation Alkali Activated Materials with Reduced Graphene Oxide

Long¹,

Lin²,

Tan³

et al. 2020

Materials

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Development of low thermal conductivity and high strength building materials is an emerging strategy to solve the heavy energy consumption of buildings. This study develops sustainable alkali activated materials (AAMs) for structural members from waste expanded polystyrene (EPS) beads and reduced graphene oxide (rGO) to simultaneously meet the thermal insulation and mechanical requirements of building energy conservation. It was found that the thermal conductivity of AAMs with 80 vol.% EPS and 0.04 wt.% rGO (E8–G4) decreased by 74% compared to the AAMs without EPS and rGO (E0). The 28-day compressive and flexural strengths of E8–G4 increased by 29.8% and 26.5% with the addition of 80 vol.% EPS and 0.04 wt.% rGO, compared to the sample with 80 vol.% EPS without rGO (E8). In terms of compressive strength, thermal conductivity, and cost, the efficiency index of E8–G4 was higher than those of other materials. A building model made from AAMs was designed using building information modeling (BIM) tools to simulate energy consumption, and 31.78% of total energy consumption (including heating and cooling) was saved in the building operation period in Harbin City, China. Hence, AAMs made of waste EPS beads and rGO can realize the structural and functional integrated application in the future.

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Expanded polystyrene waste application for improving biodiesel environmental performance parameters from life cycle assessment point of view

Cited by 38 publications

References 212 publications

Recycled Expanded Polystyrene as Lightweight Aggregate for Environmentally Sustainable Cement Conglomerates

Recycled Expanded Polystyrene as Lightweight Aggregate for Environmentally Sustainable Cement Conglomerates

High production-yield solid-state carbon dots with tunable photoluminescence for white/multi-color light-emitting diodes

Structural Applications of Thermal Insulation Alkali Activated Materials with Reduced Graphene Oxide

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