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Waste and recycling

Xem 1-20 trên 49 kết quả Waste and recycling
  • Depletion of mineral resources is one of the major problems in the world. We have consumed available resources as if they were unlimited, and at the same time we generate a huge quantity of waste, thereby contaminating the Earth. The amount of waste in our society reflects how much resources we consume. We, as modern society, create more products and packaging which is visually appealing but cannot be easily decomposed. Energy demands, resource limitations, and environmental pollution are closely linked.

    pdf306p wqwqwqwqwq 09-07-2012 33 6   Download

  • Sustainability in natural systems is built on the closed-end process of recycling materials. Our present society produces so much that is not recyclable, like resin-molded chairs and air polluting automobile tires, that it is necessary to apply intention to source reduction and product responsibility. Chapter 18 provides knowledge of municipal solid waste and how to disposal and recovery.

    ppt11p tangtuy07 02-04-2016 26 5   Download

  • If the 20th century could be characterized by the rapid increase in the production and consumption of materials that helped improving the standards of living, then the 21st certainly has many elements to qualify as the century of recycling. Since the duration of life of a number of wastes is very small (roughly 40% have duration of life smaller than one month), there is a vast waste stream that reaches each year to the final recipients creating a serious environmental problem.

    pdf420p orchid_1 25-09-2012 52 18   Download

  • Each section includes chapters with interesting topics. Authors spread around the world have been resolved so we are delighted that this book represents research in promising high. Material properties are described in more creative ways for the standard components or biological materials and sources of natural materials. Commonly used materials such as glass, carbon, epoxy resin, concrete, ... described the characteristics improve or construction work. Waste materials use and recycling is the next step and it is a important way how to save resources and our environment....

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  • The environmental goods and services  (EGS) sector has  traditionally  included solutions  for problems  such  as  air, noise  and marine pollution,  land  and water  contamination,  as well  as  activities  such  as  environmental  analysis  and  consultancy  and  waste  management  and  recycling.  However  more  recently,  the  definition  of  this  sector  has  widened.

    pdf0p dangsuynghi 15-03-2013 42 9   Download

  • Wastes are very process-specific but the key pollutants can be derived from knowledge of: the process, construction materials, corrosion / erosion mechanisms and maintenance materials. Waste audits are used to gather information on the source, composition, quantity and variability of all wastes. Waste prevention typically involves preventing the arising of waste at source, minimising the arisings and recycling any waste that is generated.

    pdf48p cao_can 29-12-2012 47 8   Download

  • Pulp and paper is a mature industry. Industrialised paper manufacturing in Europe started in the early 19th century (Berkhout, 2005). It is a capital and resource-intensive industry that contributes to many environmental problems, including global warming, human tox- icity, eco-toxicity, photochemical oxidation, acidification, nutrification, and solid wastes (Blazejczak and Edler, 2000). Paper is made of natural fibres, either from wood or from recycled materials. Figure 1 below presents a schematic representation of the production system.

    pdf52p loixinloi 08-05-2013 73 6   Download

  • Eleven million tonnes of waste are produced yearly by the European pulp and paper industry, of which 70% originates from the production of deinked recycled paper. Wastes are very diverse in composition and consist of rejects, different types of sludges and ashes in mills having on-site incineration treatment. The production of pulp and paper from virgin pulp generates less waste but the waste has similar properties to waste from the production of deinked pulp, although with less inorganics [...].

    pdf50p loixinloi 08-05-2013 50 6   Download

  • Though a quarter of a century has elapsed since the first edition of Business Cycles, the opportunities it opened up for further research remain largely unexploited. The chief exception is Schumpeter's own Capitalism, Socialism, and Democracy. Much has been published on innovation and entrepreneurship, usually with a nod in Schumpeter's direction but no more. Even a work like Yusif A.

    pdf72p bi_ve_sau 05-02-2013 19 5   Download

  • Depletion of mineral resources is one of the major problems in the world. We have consumed available resources as if they were unlimited, and at the same time we generate a huge quantity of waste, thereby contaminating the Earth. The amount of waste in our society reflects how much resources we consume. We, as modern society, create more products and packaging which is visually appealing but cannot be easily decomposed. Energy demands, resource limitations, and environmental pollution are closely linked.

    pdf304p baobinh1311 25-09-2012 33 4   Download

  • This section illustrates that MBT systems can be described as two simple concepts: either to separate the waste and then treat; or to treat the waste and then separate. In some systems only biological treatment is required to treat all the residual MSW before disposal to landfill. Whilst a variety of treatment and mechanical separation options are offered, these need to be optimised in terms of the outputs in order to find outlets for the various materials / fuels derived from the process (see Markets for the Outputs section). ...

    pdf0p loixinloi 08-05-2013 31 4   Download

  • This study, the first to investigate workplace contamination in areas in Ghana where e-waste recycling and disposal is carried out, focussed on the main centre for this type of work, at the Agbogbloshie scrap market in Ghana’s capital, Accra. One of the numerous similar, though far smaller, operations that take place throughout Ghana was also investigated, at the location of a scrap dealer in Korforidua, a smaller city to the north of Accra. At these workshops, e-waste is recycled in a crude way, primarily involving manual disassembly and open burning to isolate copper from plastics.

    pdf10p cao_can 02-01-2013 27 2   Download

  • Chapter 6 - Waste management. After studying this chapter you will be able to understand: How event waste can be directed into reuse, recycling, and composting streams; how to divert waste away from the landfill; how to organize attractive and effective trash receptacles;...

    ppt13p trueorfalse8 07-09-2017 25 2   Download

  • The objective of this research is to create a low cost material with high heavy metal removal capacity. Our study focuses on preparing a composit which can remove lead from wastewater of battery recycle villages of Vietnam, based on treated fly ash (TFA) and polyurethane (PU) foam. Fly ash after treating by thermal and NaOH has the surface area of 250.12 m2/g which leads to its high adsorption capacity, monolayer adsorption capactity = 3gPb/g. The preparation of PU foam and treated fly ash (TFA) process was conducted by mixing TFA and PU foam then treated withthermal.

    pdf8p thihuynh3006 16-03-2018 20 0   Download

  • In this study, the Material Flow Analysis and Policy assessment tool are applied to assess the impact of the EPR system, in case of large home appliances and to find the obstacles on the implementation of the system. Among the experimental appliances, air conditioner has the highest rate of valuable materials and also the highest rate of recyclable materials, then follows the refrigerator, washing machine and desktop computer.

    pdf7p cumeo3000 01-08-2018 6 0   Download

  • The result shows the efficiency of recovery of recyclables from household wastes in Dau Tieng town is quite high with 77.99 %. The major component of the recyclables consists of plastic, glass, paper, aluminum, iron and steel. The amount of recyclable materials lost in the recovery process in studying area is 258.52 kg/day, equivalent to 1,310,696 VND each day.

    pdf7p cumeo3000 01-08-2018 10 0   Download

  • Plastic recycling can help improving the environment quality by reducing waste discharge as well as keeping the surrounding clean. This study examines the perception of individual solid-waste generators about plastic recycling and their willingness to pay (WTP) an extra fee in addition to monthly waste collection charges at their current resident places.

    pdf10p danhnguyentuongvi27 19-12-2018 6 0   Download

  • Rapid urbanization, intensified industrialization, rise of income, and a more sophisticated form of consumerism are leading to an increase in the amount and toxicity of waste all over the world. Whether reused, recycled, incinerated or put into landfill sites, the management of household and industrial waste yield financial and environmental costs.

    pdf11p vinguyentuongdanh 19-12-2018 3 0   Download

  • The aim of this study is to evaluate the effect of fly ash on the properties of fresh and harden recycled aggregate concrete based on alkali-activated slag. The aggregate of concrete mixtures was prepared with partial replacement of recycled aggregate, which was collected from construction demolish waste.

    pdf4p caplock2711 22-02-2019 8 0   Download

  • Lecture Human ecology - Chapter 23: Solid and hazardous waste. The contents of this chapter include all of the following: Solid waste; waste prevention: reducing the amount of waste, reusing products, recycling materials; hazardous waste.

    pdf35p shiwo_ding5 22-05-2019 1 0   Download

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