Sulfonated Expanded Polystyrene Waste Promotes the (+)-Citronellal Cyclization Reaction: A Sustainable Alternative Process for Biomass Valorization

2021 ◽  
Author(s):  
Maria Stella Palhares Ribeiro ◽  
Rayane Rocha Silva Pinto ◽  
Kelly A. da Silva Rocha ◽  
Camila Grossi Vieira
Keyword(s):  
Expanded Polystyrene ◽  
Cyclization Reaction ◽  
Biomass Valorization ◽  
Alternative Process ◽  
Polystyrene Waste

Use of Foam Polystyrene Waste in the Conditions of a Reinforced Concrete Products Factory

2020 ◽  
pp. 49-52
Author(s):  
S.E. YANUTINA ◽  
Keyword(s):  
Reinforced Concrete ◽  
Precast Concrete ◽  
Expanded Polystyrene ◽  
Insulation Material ◽  
Design Strength ◽  
Foam Polystyrene ◽  
Secondary Use ◽  
Concrete Blocks ◽  
Polystyrene Waste ◽  
Factory Laboratory

The relevance of research in the factory laboratory of JSC «198 KZHI», which is part of the HC GVSU «Center», is dictated by the need to dispose of foam polystyrene waste that occurs in large quantities when producing the precast concrete. In the production of three-layer external wall panels, polystyrene heatinsulating plates of the PPS 17-R-A brand are used as an effective insulation material. The secondary use of PPS 17-R-A for its intended purpose, as a heater, is not possible. The volume of foam polystyrene produced varies from 25 to 45 m3 per month. Utilization (disposal) of foam polystyrene waste is an expensive undertaking. Its use as a filler in the production of expanded polystyrene blocks was tested in the factory’s laboratory to produce foam polystyrene concrete with specified physical and mechanical characteristics. The results of testing of expanded polystyrene concrete of classes B2.5 and B 7.5 are presented. It is shown that under the conditions of the reinforced concrete factory technology, the production of polystyrene concrete blocks is possible with the achievement of the design strength. The information presented in the article is aimed at motivating specialists who produce recast concrete to the possibility of using foam polystyrene waste for low-rise construction. Keywords: foam polystyrene, ecology, energy efficiency, foam polystyrene concrete, foam polystyrene heat insulation plates, precast concrete.

Free vibration characteristics of flax fiber/ expanded polystyrene waste composite

2021 ◽  
Author(s):  
Abdu Mohammed ◽  
Temesegen Batu ◽  
Mengistu Manaye ◽  
Haiter Lenin Allasi
Keyword(s):  
Free Vibration ◽  
Expanded Polystyrene ◽  
Vibration Characteristics ◽  
Flax Fiber ◽  
Polystyrene Waste

scholarly journals Estimating impact of financial incentives on construction waste production

2018 ◽  
Vol 7 (2.13) ◽  
pp. 322
Author(s):  
Milad Pavopar
Keyword(s):  
Financial Incentives ◽  
Expanded Polystyrene ◽  
Waste Production ◽  
Materials Used ◽  
Polystyrene Waste ◽  
The Cost ◽  
Development Objectives ◽  
Project Lead ◽  
Total Price ◽  
Ready Mix Concrete

Due to destructive environmental effects of construction wastes and increasing amount of these wastes that are in conflict with sustainable development objectives, it is essential to adopt solutions in order to reduce such wastes regarding environment preservation. This study was conducted to examine impact of financial incentives on reducing construction wastes using pairwise comparisons. According to professional opinions and experience of experts in building industry based on the 7-point Likert scale, mean responses obtained to 4.93, 4.83, and 4.73 for waste materials (stone, tile, ceramic), ready mix concrete waste, and EPS (Expanded Polystyrene) waste, respectively. On the other hand, reliability of research instrument obtained at 0.77 using Cronbach’s alpha test. Moreover, it is seen that the studied materials in this research assigned 41% contribution of constructing costs to themselves; of them, fittings and tiles, ceramics and stone assigned the highest constructing cost to themselves with 12%contribution. In fact, waste of materials in projects under the “total price” contract 30-50% higher than projects under the “cost plus” contract. Increasing number of floors and area of construction project lead to average reduction in waste of materials from 4.4% to 1.4%. Change in regional price of housing will changes materials used in construction based on different prices.  

scholarly journals Effect of expanded polystyrene waste in the creation of waterproofing paint

2019 ◽  
Vol 1386 ◽  
pp. 012075
Author(s):  
D Bellon ◽  
W H Zamudio ◽  
L C Tiria ◽  
S M Durán ◽  
I E Useche ◽  
...  
Keyword(s):  
Expanded Polystyrene ◽  
The Creation ◽  
Polystyrene Waste

scholarly journals The impact of expanded polystyrene waste of different fineness on the properties of lightweight composite

2019 ◽  
Vol 660 ◽  
pp. 012066
Author(s):  
D Leonavičius ◽  
I Pundienė ◽  
J Pranckevičienė ◽  
M Kligys
Keyword(s):  
Expanded Polystyrene ◽  
Polystyrene Waste ◽  
The Impact

scholarly journals THE EFFECT OF EXPANDED GLASS AND POLYSTYRENE WASTE ON THE PROPERTIES OF LIGHTWEIGHT AGGREGATE CONCRETE

2016 ◽  
Vol 8 (1) ◽  
pp. 31-40 ◽  
Author(s):  
Jurga Šeputytė-Jucikė ◽  
Marijonas Sinica
Keyword(s):  
Thermal Conductivity ◽  
Compressive Strength ◽  
Thermal Conductivity Coefficient ◽  
Lightweight Aggregate ◽  
Expanded Polystyrene ◽  
Partial Replacement ◽  
Lightweight Aggregate Concrete ◽  
Aggregate Concrete ◽  
Low Thermal Conductivity ◽  
Polystyrene Waste

The main objective of this study is to create a lightweight aggregate concrete (LWAC) with a low thermal conductivity coefficient using expanded glass (EG) aggregate, produced from waste glass or crushed expanded polystyrene waste, obtained by crushing waste packing tare of household appliances. Research related to the effects of the amount of Portland cement (PC) as well as EG aggregates and crushed expanded polystyrene waste on physical (density, thermal conductivity coefficient, water absorption and capillary coefficient) and mechanical (compressive strength) properties of LWAC samples are provided. Insulating LWAC based on a small amount of PC and lightweight EG aggregates and crushed expanded polystyrene waste, with especially low thermal conductivity coefficient values (from 0.070 to 0.098 W/ (m·K)) has been developed. A strong relationship between thermal conductivity coefficient and density of LWAC samples was obtained. The density of LWAC samples depending on the amount of PC ranged between 225 and 335 kg/m3. A partial replacement of EG aggregate by crushed expanded polystyrene waste, results in relative density decrease of LWAC samples. In LWAC samples the increased amount of PC results in increased compressive strength.

Performance Assessment of a Composite Material Based on Kraft Paper and a Resin Formulated with Expanded Polystyrene Waste: A Case Study from Mexico

2017 ◽  
Vol 26 (4) ◽  
pp. 1573-1580 ◽  
Author(s):  
M. Jimenez-Francisco ◽  
J. A. Caamal-Canche ◽  
J. G. Carrillo ◽  
Ricardo H. Cruz-Estrada
Keyword(s):  
Composite Material ◽  
Performance Assessment ◽  
Expanded Polystyrene ◽  
Kraft Paper ◽  
Polystyrene Waste

scholarly journals A Recycling Alternative for Expanded Polystyrene Residues Using Natural Esters

2022 ◽  
Author(s):  
Luisa V. García-Barrera ◽  
Dafne L. Ortega-Solís ◽  
Gabriela Soriano-Giles ◽  
Nazario López ◽  
Fernando Romero-Romero ◽  
...  
Keyword(s):  
Environmental Problem ◽  
Good Alternative ◽  
Expanded Polystyrene ◽  
Raw Material ◽  
Omega 3 ◽  
Scanning Calorimetry ◽  
Fishing Activity ◽  
Polystyrene Waste ◽  
Recovered Material

Abstract The objective of this research is to provide a new recycling method for one of the most consumed plastics today, since it is used for the manufacture of a wide variety of industrial products, which leads to an environmental problem caused by incorrect handling and final disposal.The dissolution of expanded polystyrene waste (WEP) was evaluated by using natural esters for its post treatment and recovery. The use of omega-3 as a natural solvent creates an opportunity to take advantage of natural biomass, since it can be obtained from the residues from the fishing activity, this being an economic advantage for obtaining raw material and also friendly with the environment.For the development of this research, expanded polystyrene containers were used, as well as omega-3 and glyceryl tributyrate as natural solvents and ethyl butyrate as synthetic solvent, methanol and isopropanol for recovery and cleaning of the polystyrene. The characterization of the recovered material was carried out with thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and infrared spectroscopy (FTIR) techniques. The experimental data obtained indicated that the use of these esters is a good alternative for the recycling of expanded polystyrene.

Conversion of expanded polystyrene waste to nanoparticles via nanoprecipitation

2015 ◽  
Vol 133 (4) ◽  
pp. n/a-n/a ◽  
Author(s):  
Ashna Rajeev ◽  
Venkataramana Erapalapati ◽  
Nandita Madhavan ◽  
Madivala G. Basavaraj
Keyword(s):  
Expanded Polystyrene ◽  
Polystyrene Waste
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