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Solid Waste Management - Article Example

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The article "Solid Waste Management" focuses on the criticla analysis of the article entitled Recycling and recovery routes of plastic solid waste (PSW): a review written by S. M. Al-Salem, P. Lettieri, and J. Baeyens first published in the journal Waste Management back on July 03, 2009…
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Solid Waste Management
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Extract of sample "Solid Waste Management"

They form the greatest percentage of the daily single-life (or single-use) cycles of plastic thrown as waste. In their article, the authors discussed the four major steps or routes in PSW treatment which are the primary (re-extrusion), secondary (mechanical), tertiary (chemical), and quaternary (energy recovery); each option is discussed in detail.

The research problem was to discuss the benefits and drawbacks of each treatment route and assess the viability of each route for the municipal solid waste (MSW) problem. The authors noted how PSW is found in considerable amounts in the final stream of MSW due to a significant number of daily applications such as in coatings, wiring, packaging, films, covers, bags, and containers (Al-Salem, Lettieri, & Baeyens, 2009, p. 2626); the amount of PSW almost doubled from the period between 1990 to 2000, with each individual producing around 250 kgs. of MSW with a 3% annual growth rate. The increasing cost of finding suitable landfills together with increasingly strict regulatory guidelines and higher environmental awareness has compelled many researchers to focus on the issue of recycling as a viable alternative due to increased production, consumption, and waste generation rates of PSW in the last few decades.

The researchers gathered data on both PSW and MSW to highlight the problem of these plastic wastes which are not biodegradable and so viable ways must be found to deal with it. The authors used a good number of credible primary and secondary data sources to support their arguments concerning the routes now available for PSW treatment. In this regard, continued development in recycling and recovery technologies is necessary which requires the cooperation of the whole industry, the government, and the consumers because the solution requires investments in infrastructure and the establishment of viable markets for PSW. In this regard, the authors noted how tertiary and quaternary treatment schemes have not been sufficiently investigated when these two options appear to be robust and offer great potential. An approach to energy recovery by combustion is quite attractive (La Mantia, 2002, p. 349).

There are no apparent flaws in the procedural design of their research because the stated purpose is merely to gather existing data on PSW and the technologies presently available when dealing with this problem. The use of data graphs and diagrams greatly helped in the presentation because a reader gets to grasp much information by just looking at these graphs and diagrams. A good analysis of the data will give the reader a sense of urgency regarding the problem of PSW as the world runs out of landfills and the production of plastic continues on an upward trend still. A good use of diagrams is the illustration showing an integrated waste management (IWM) approach in life cycle assessment (LCA) studies to emphasize the value of sustainable consumption patterns and the potential of using prevention-by-design in helping reduce PSW at the source. The study authors reiterated how tertiary (chemical) recycling is a viable option because it provides fuel by converting waste plastic materials into smaller molecules suitable for use as new feedstock. The quaternary option (energy recovery) is also good as it reduces waste volume by 95% to 99%.

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