(best examples and good practices) on household organic waste ...

(best examples and good practices) on household organic waste ... (best examples and good practices) on household organic waste ...

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61 paper, ong>andong> other products. Such initiatives increase the demong>andong> ong>andong> the quantity of paper available for recycling. (Pfeffer, 1992). Glass Glass in MSW is found primarily in glass containers, although a portion is found in durable ong>goodong>s. The glass containers are used for beer ong>andong> soft drinks, wine ong>andong> liquor, food products, toiletries, ong>andong> a variety of other products. Picture 3.: Glass waste Aluminum Aluminum waste consists of industrial scrap, which is a by-product of aluminum manufacturing processes (“new scrap”), ong>andong> old scrap consisting of postconsumer items such as used aluminum beverage cans, window frames, building siding, ong>andong> foil. Nearly 80% of the aluminum in MSW consists of used beverage containers. There are numerous successful community recycling programs for mixed aluminum scrap ong>andong> aluminum cans. These programs are generally selfsufficient ong>andong>, in some municipal programs, provide an income to subsidize other recycling activities (Pfeffer., 1992). Used aluminum cans are collected in curbside pickup programs, at buy-back locations, at recycling centers, ong>andong> by scrap metal dealers. A number of states have established mong>andong>atory deposits for beverage containers ong>andong> have installed redemption centers at supermarkets. Cans brought to collection centers are processed in a number of ways. (Wastesum.,2010) Ferrous Materials Ferrous metals are those containing iron ong>andong> are used in the manufacture of consumer ong>goodong>s. Consumer ferrous waste includes appliances, automobiles, food, ong>andong> nonfood containers. Among all the materials recycled worldwide, iron ong>andong> steel represent the greatest tonnages. Iron has been manufactured for thousong>andong>s of years ong>andong> scrap was recycled even in the earliest times of production. (ISRI., 1993).

62 Plastics Plastics (Fiqure.32) possess many properties that make them desirable, if not indispensable, for the modern consumer. These synthetic polymers are shatterresistant, waterproof, lightweight, durable, ong>andong> strong. As a result, plastics have replaced glass ong>andong> a number of other materials in packaging, construction, ong>andong> other uses. Picture 4.: Plastic waste The largest source of plastics in MSW is containers ong>andong> packaging. Containers for soft drinks, milk, water, food, ong>andong> other products are among the largest portion of plastics in containers ong>andong> packaging. The remainder of plastic packaging is found in bags, sacks, wraps, closures, ong>andong> other miscellaneous packaging products. Yard Waste The USEPA (1999) defines yard waste as grass, leaves, ong>andong> tree ong>andong> brush trimmings from residential, institutional, ong>andong> commercial sources. There are limited data on the composition of yard wastes; however, it is estimated that the average composition is about 50% grass, 25% leaves, ong>andong> 25% brush on a weight basis. These numbers will vary as a function of climate, region of the country, ong>andong> season of the year. Food Waste Food wastes include uneaten food ong>andong> food preparation waste from residences, commercial establishments (restaurants, etc.), institutional sources (school cafeterias, hospital cafeterias), ong>andong> industrial sources (factory lunchrooms).

61<br />

paper, <str<strong>on</strong>g>and</str<strong>on</strong>g> other products. Such initiatives increase the dem<str<strong>on</strong>g>and</str<strong>on</strong>g> <str<strong>on</strong>g>and</str<strong>on</strong>g> the<br />

quantity of paper available for recycling. (Pfeffer, 1992).<br />

Glass<br />

Glass in MSW is found primarily in glass c<strong>on</strong>tainers, although a porti<strong>on</strong> is<br />

found in durable <str<strong>on</strong>g>good</str<strong>on</strong>g>s. The glass c<strong>on</strong>tainers are used for beer <str<strong>on</strong>g>and</str<strong>on</strong>g> soft drinks,<br />

wine <str<strong>on</strong>g>and</str<strong>on</strong>g> liquor, food products, toiletries, <str<strong>on</strong>g>and</str<strong>on</strong>g> a variety of other products.<br />

Picture 3.: Glass <strong>waste</strong><br />

Aluminum<br />

Aluminum <strong>waste</strong> c<strong>on</strong>sists of industrial scrap, which is a by-product of<br />

aluminum manufacturing processes (“new scrap”), <str<strong>on</strong>g>and</str<strong>on</strong>g> old scrap c<strong>on</strong>sisting of<br />

postc<strong>on</strong>sumer items such as used aluminum beverage cans, window frames,<br />

building siding, <str<strong>on</strong>g>and</str<strong>on</strong>g> foil. Nearly 80% of the aluminum in MSW c<strong>on</strong>sists of used<br />

beverage c<strong>on</strong>tainers.<br />

There are numerous successful community recycling programs for mixed<br />

aluminum scrap <str<strong>on</strong>g>and</str<strong>on</strong>g> aluminum cans. These programs are generally selfsufficient<br />

<str<strong>on</strong>g>and</str<strong>on</strong>g>, in some municipal programs, provide an income to subsidize<br />

other recycling activities (Pfeffer., 1992).<br />

Used aluminum cans are collected in curbside pickup programs, at buy-back<br />

locati<strong>on</strong>s, at recycling centers, <str<strong>on</strong>g>and</str<strong>on</strong>g> by scrap metal dealers. A number of states<br />

have established m<str<strong>on</strong>g>and</str<strong>on</strong>g>atory deposits for beverage c<strong>on</strong>tainers <str<strong>on</strong>g>and</str<strong>on</strong>g> have installed<br />

redempti<strong>on</strong> centers at supermarkets. Cans brought to collecti<strong>on</strong> centers are<br />

processed in a number of ways. (Wastesum.,2010)<br />

Ferrous Materials<br />

Ferrous metals are those c<strong>on</strong>taining ir<strong>on</strong> <str<strong>on</strong>g>and</str<strong>on</strong>g> are used in the manufacture of<br />

c<strong>on</strong>sumer <str<strong>on</strong>g>good</str<strong>on</strong>g>s. C<strong>on</strong>sumer ferrous <strong>waste</strong> includes appliances, automobiles,<br />

food, <str<strong>on</strong>g>and</str<strong>on</strong>g> n<strong>on</strong>food c<strong>on</strong>tainers. Am<strong>on</strong>g all the materials recycled worldwide,<br />

ir<strong>on</strong> <str<strong>on</strong>g>and</str<strong>on</strong>g> steel represent the greatest t<strong>on</strong>nages. Ir<strong>on</strong> has been manufactured for<br />

thous<str<strong>on</strong>g>and</str<strong>on</strong>g>s of years <str<strong>on</strong>g>and</str<strong>on</strong>g> scrap was recycled even in the earliest times of<br />

producti<strong>on</strong>. (ISRI., 1993).

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