what is the analysis of recycling of materials
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Answer:
Recyclable materials include many kinds of glass, paper, cardboard, metal, plastic, tires, textiles, batteries, and electronics. The composting or other reuse of biodegradable waste—such as food or garden waste—is also a form of recycling.
Abstract: This paper outlines past and future work on
the topic of recycling systems. This project focuses on
the performance of recycling systems from a range of
perspectives. The recyclability of products, separation
efficiencies for recycling processes and systems built
from these processes, and economic factors
contributing to the success of recycling enterprises are
all considered. The goal of this project is to develop a
basic understanding of the factors effecting the
performance of recycling systems, with the eventual
ambition of developing techniques for predictive
analysis of these systems. These analysis techniques
will allow us to evaluate the economic, ecological, and
energy impact of recycling systems. This increased
understanding will help guide the design of recycling
systems.
1. Introduction: In the United States and other
industrialized nations, the rate of material consumption
is unsustainable. Recycling is an important factor in any
strategy for reducing the rate of material consumption.
In-depth analysis of the performance of recycling
systems can provide guidance for the development of
new recycling systems and the improvement of old
systems.
This project attempts to analyze the performance of
recycling systems on several different levels. Research
into material mixing and its effect on product
recyclability is presented. Research into the separation
efficiency of compound separation processes with
recycled streams is also presented. A model for
comparing processes with different separation
efficiencies is presented, as well as a model for
estimating the market value of recycled materials.
2. A Measure of Material Mixing: Recyclable
product choice is an important factor in the success of a
recycling system. Two measures are necessary to assess
the material recycling potential of a product, the value
of the materials present in the product, and the material
mixing in the product. In 1994, Allen and Behamensh
proposed that an approach similar to Sherwood’s
characterization of the relationship between the price of
a material and its concentration in its feed stream [1, 2].
The Sherwood plot shown in Figure 1 encompasses a
variety of materials in dilute solution including metals,
biological and biomedical materials, and pollutants.
Figure 1: Sherwood plot of market value of a target
material and its feed concentration. From Grübler [3].
Applying this relationship to the recyclability of
products presents a problem because a typical product
consists of several desirable materials in relatively high
concentrations as opposed to a single desirable material
in a dilute solution. Another relevant characteristic of
these recycled product systems is the typical form of
the separation processes. Most recycling systems can be
modeled as a series of binary separation steps, with
multiple collected material outputs
An alternate cost scaling heuristic that takes these two
factors into account is proposed here. The core features
of this proposal are that: 1) the processing costs scale
with the measure of complexity of the separation
system, 2) all material outputs of the separation system.
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