Waste and recycling

Due to rapid industrialization and modernization, a large number of both fly ash (FA) and ground granulated blast furnace slag (GGBFS), both by-products from thermal power plants and steel factories, are increasing day by day. Thus, recycling these industrial wastes to produce lightweight foamed concrete (LFC) was investigated in this study.

8p viargus 20-02-2023 0 0   Download

Disposal of spent nuclear fuel is a major political and public-perception problem for nuclear energy. From a radiological standpoint, the long-lived component of spent nuclear fuel primarily consists of transuranic (TRU) isotopes.

13p vironald 15-12-2022 5 3   Download

Full recycling of transuranic (TRU) isotopes can in theory lead to a reduction in repository radiotoxicity to reference levels in as little as ~500 years provided reprocessing and fuel fabrication losses are limited. However, over a limited timeframe, the radiotoxicity of the ‘final’ core can dominate over reprocessing losses, leading to a much lower reduction in radiotoxicity compared to that achievable at equilibrium.

12p vironald 15-12-2022 3 2   Download

For resource efficiency as well as recycling industrial solid wastes, this study investigates the use of ground granulated blast furnace slag (GGBFS) in the production of high-strength mortars.

6p vifred 23-12-2022 9 2   Download

In the new era, paper is still the main source of raw materials for daily life and production activities. Therefore, the research team explored recycling paper from bagasse to reduce waste and limit the depletion of available resources. The main material is bagasse with binders of aloe vera, corn starch, and CaCO3 in certain proportions to create paper products.

7p vispyker 14-11-2022 46 3   Download

The eco-efficiency indicator is recognized as an effective tool to measure sustainability in construction. This study proposes s indicators to measure eco-efficiency at project and component levels during the roadway life cycle. Conventional cost over energy consumption and conventional cost over GHG emissions are two most prominent indicators in the material production stage, whereas conventional cost over solid waste is the most prominent in the disposal/recycling stage.

5p vilexus 30-09-2022 12 3   Download

Urbanization and rapid population growth lead to considerable growth in generating municipal solid waste (MSW), with more than 20 % construction solid waste (CSW). Recycling CSW can save natural resources, land, social resources and reduce environmental pollution. This study presents methods for treatment and recycling of CSW for a case study in Ho Chi Minh city.

7p viarrinera 26-08-2022 6 1   Download

The paper presents experimental results and structural analysis of reinforced concrete (RC) columns made of recycled aggregate concrete (RAC) and natural aggregate concrete (NAC) under concentric compressive load. The ratio of recycled aggregates in mixture (i.e, replacement ratio, r in %) was 0, 50, and 100% by mass, where r = 0% corresponding to NAC.

11p haoasakura 30-05-2022 6 1   Download

In Vietnam, EPR has stipulated in the Law on Environmental Protection (LEP) 2020. Learning from the experience of implementing EPR in some countries around the world, models for producers to carry out their responsibilities in waste collection, recycling and treatment have been proposed.

14p visherylsandberg 18-05-2022 3 1   Download

Lecture Solid waste management - Chapter 6a: Recycle, reuse, resource recovery (CE 431) provide students with knowledge about involves recovery of resources from the waste stream in the form of both materials and energy.

15p huangminghao_1902 27-02-2022 15 1   Download

Lecture Solid waste management - Chapter 7: Composting (CE 431) provide students with knowledge about accomplishes all three rs – reduce, reuse and recycle advantages of composting.

6p huangminghao_1902 27-02-2022 10 1   Download

The excellent C.R. adsorption capacity of the a-Fe2O3 nanoplates was further confirmed by conducting experiments with a solution containing a mixture of dyes. Our findings indicate that the synthesized a-Fe2O3 nanoplates have a great potential in removing industrial waste, such as C.R. from polluted water.

9p meyerowitz 25-12-2021 2 0   Download

Polymer blending as an efficient method for blending at least two polymers is usually used to create new materials with desirable physical properties. This article focuses on the biodegradability evaluation of polypropylene (PP) fibers modified with disposable recycled poly(lactic acid) (r-PLA) plastic flakes. Biodegradable modified PP fibers containing 30% r-PLA were prepared by melt spinning process and evaluated with different methods of biodegradation assays.

11p tudichquannguyet 29-11-2021 2 0   Download

The management of end-of-life tires (ELT) waste gains importance in aspect of possible environmental and economic issues so the waste recycling becomes unavoidable. This study describes the fabrication and characterization of a new phase changing material (PCM)/ELT microcomposites that could be used in thermal energy storage. Paraffin together with the 4 fatty acids and ELT rubber powder are used as PCMs and as the supporting material, respectively. Paraffin/ELT composites are fabricated, as well, by the vacuum impregnation method in order to investigate the effect of the preparation method.

14p tudichquannguyet 29-11-2021 5 0   Download

In India, the quantity of “E-Waste” or Electronic Waste has now become a major problem. Electronic wastes (E-Wastes) typically include discarded computer monitors, motherboards, mobile phones and charges, compact discs, headphones, television sets, A.C. and refrigerators. Only 20 percent of global E-Waste is recycled. In India most of the waste electronic items are stored at households as people do not know how to discard them. This ever-increasing waste is very complex in nature and is also a rich source of metals.

7p chauchaungayxua12 29-07-2021 10 1   Download

This study presents an experimental investigation on the recycling of waste incineration bottom ash (IBA) as a fine aggregate in the production of interlocking concrete bricks (ICB). Before being used, the concentration of heavy metal in IBA was determined to confirm it is a non-toxic material. In this study, the IBA was used to replace crushed sand (CSA) in the brick mixtures at different replacement levels of 0%, 25%, 50%, 75%, and 100% (by volume).

12p chauchaungayxua12 09-07-2021 13 0   Download

Along with socio-economic development, the volume of domestic solid waste in Vietnam is increasing by 12% annually. The current management model of domestic solid waste presents many limitations: low collection rate, lack of proper treatment, and low levels of recycling and reusing rates but high rates of buried waste and pollution.

10p chauchaungayxua12 09-07-2021 12 1   Download

With a global urban population of three billion, cities are currently generating around 1.3 billion tons of waste every year (The World Bank 2012). By 2050 cities, most of them in the South, will account for two thirds of global demographic growth, producing even greater volumes of waste.

7p vimississippi2711 08-12-2020 6 0   Download

Waste can be an opportunity for cities to meet social and environmental goals. This paper is based on research carried out by Dias (2002 and 2009) and explores the main features of the system designed by Belo Horizonte city which integrated cooperatives of informal waste pickers into its municipal recycling system. The paper reviews its genesis of organizing, the main dimensions of the recycling system, the work specialization within cooperatives and main impacts of this integrated system.

3p vimississippi2711 08-12-2020 7 1   Download

This paper studies the use of recycled polystyrene, an industrial and domestic waste, to produce the waterproofing material. The components of this material consist of recycled polystyrene, cement, sand, rice hush ash, and sodium silicate, which are popular materials in Vietnam.

7p cothumenhmong8 05-11-2020 10 1   Download