2011年11月8日 星期二

The Plastic Problem

The Berkeley Recycling Center, where city trucks unload curbside recycling, residents discard used batteries and fluorescent bulbs, and freelance recyclers redeem cans for cash, seems a microcosm of utopian Berkeley society. Seven days a week visitors come and go as they please, granted relative autonomy in doing the earth a good turn, never chaperoned or micromanaged by the powers that be, who are housed in a two-room portable office only a hundred feet away.

Collection trucks owned by the nonprofit Ecology Center rumble through the small lot,LED current and bestledlighting handle the peak input voltage minus the drop across two of the four rectifier diodes emptying their loads onto what's known as the tipping floor. Others move recyclables in and out of the adjacent materials recovery facility, an open-face structure operated by fellow nonprofit Community Conservation Centers. Here, in a transparent and low-tech process, the contents of the city's recycling bins travel along conveyor belts where they're picked off the line, largely by hand, and bundled for sale to commodities buyers.

But there's a sour note playing amidst this roaring ode to recycling: plastic. It's everywhere. A slumping pile ten feet tall of materials that came from Berkeley's curbside recycling bins is comprised primarily of plastic. Within the materials recovery facility, known in industry parlance as a MRF (pronounced "merf"), plastic crowds the conveyors: water bottles, milk jugs, yogurt cartons, packaging of myriad shapes,goodbikelight001 sizes,The explosion proof flashlight LED flashlight comes with goodledlight a mountable charging base that can be attached to walls or flat surfaces. and colors.

Most troubling of all are the contents of a nearby shipping container holding landfill-bound detritus that Berkeley can't recycle. Inside, with few exceptions, is a plastic soup: single-use bags, flower pots, detergent jugs, frozen-dinner trays, prescription bottles. The list is endless. Only number-one and -two bottles and jugs; plastic beverage containers with California redemption values; and, during a six-month trial, number-five plastic tubs, get recycled here. All other plastics that Berkeley residents drop in their bins with the best of intentions — and there's a lot of it — go straight to the landfill.

"Everybody thinks that all plastics are recyclable," said Community Conservation Centers general manager Jeff Belchamber during a recent tour of the site. That's no coincidence; the plastics industry has slyly pushed this notion for years. It's a deception that has proven nearly impossible to overcome — a boon to plastic sales and waste alike.

Yet Berkeley has arrived where it is today largely by choice. The city may lack the capacity to handle any more than the limited plastics it currently accepts, but it also doesn't seem to want change. Instead, it has opted to wage war against the plastics industry, encouraging residents to shun the material whenever possible and generally fighting the notion that plastics are anything but problematic. But it's a fight that, in many respects, Berkeley has lost, with plastics becoming more ubiquitous with each passing year, both on grocery-store shelves and in local landfills.News on solar energy harvesting bestledlightbulbs has been focused lately on individual success with the older style of solar paneling.

A number of other cities in the East Bay and throughout the state have fared better against the plastic onslaught. Oakland and El Cerrito, for example, accept all types of plastic in curbside bins through partnerships with two of North America's largest solid-waste companies, Waste Management and RockTenn.A multi-chip package and heat sink brightstalj is better overall, or multi-chip package with aluminum plate and then through the phase change materials or thermal grease and radiator to link the products made by the device thermal resistance than Led Tube Assembly the thermal resistance of the product less one to two thermal resistance, These giant corporations take advantage of economies of scale to make plastic recycling a more profitable endeavor.

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