Build Your Own Greenhouse
Methane is a major greenhouse gas that is 20 to 30 times more potent in its global warming effects than carbon dioxide, and municipal solid waste (MSW) landfills are the largest source of human-related methane emissions in the United States, accounting for about 34 of these emissions. For every 6 tons of recycled container glass used, 1 ton of carbon dioxide, a greenhouse gas, is reduced. Recycling one ton of aluminum is equivalent to not releasing 13 tons of carbon dioxide into the air.
It is not a straightforward task for the regulatory authorities to discourage illegal dumping and or burning. Waste oils are generated diffusely and it can be relatively easy to dump them clandestinely. Moreover, in many countries there is a vibrant market for burning in a variety of unregulated uses, such as space heaters and greenhouses. The administrative costs associated with monitoring and enforcement to prevent such uses of waste oils can be costly.
Greenhouse films Another example of additive modification leading to contamination of the recycle stream involves UV stabilizer based on metal complexes. Low-density PE greenhouse films often contain UV stabilizers based on nickel complexes which quench excited states (the so-called nickel quenchers). Whilst, nickel complexes are stable at polyolefin processing temperatures (i.e., 200-250oC), they degrade at higher temperatures such as those encountered in the processing of PET (i.e., 280oC). Therefore, during reprocessing of mixed plastic scrap, nickel ions can be produced and these, by virtue of their polyvalent nature, can act as prodegradants and catalyze oxidative decomposition of the polymer. These oxygenated species are in fact impurities which can cause sensitization of the polymer towards further thermal and photooxidation. The most destructive self generated impurity in many polymers is the hydroperoxide group. Since hydroperoxides are thermally unstable and photolabile they...
San Francisco, in passing its ban, cited concern not just over litter and danger to sea mammals but also greenhouse-gas emissions associated with plastic bags, which are petroleum-based products. Leaf Rapids was worried about litter as well as the fact that household waste in thin plastic bags appeared to be attracting bears to its dump.
According to EPA, in 2004 alone, Energy Star products helped save approximately 10 billion in energy costs and reduced greenhouse gas emissions by an amount equivalent to that produced by 20 million automobiles. Also, in 2005, public awareness of Energy Star reached over 60 percent. Because of Energy Star's high profile, EPA officials told us that although manufacturers do not have to design their products to meet Energy Star criteria, many manufacturers view Energy Star as a de facto requirement for design of their products suggesting that if their products do not have the Energy Star label then they are at a competitive disadvantage in the marketplace.
There are numerous reasons why . . . citizens and businesses should be encouraged to recycle. They include a broad range of environmental stewardship concerns, as well as practical interest in local economic opportunities and development, including cost savings, extended landfill lifespans, resource conservation, energy conservation, economic development, pollution prevention, greenhouse gas emissions reductions, and fostering a sense of community involvement and responsibility.
Building Your Own Greenhouse
You Might Just End Up Spending More Time In Planning Your Greenhouse Than Your Home Don’t Blame Us If Your Wife Gets Mad. Don't Be A Conventional Greenhouse Dreamer! Come Out Of The Mould, Build Your Own And Let Your Greenhouse Give A Better Yield Than Any Other In Town! Discover How You Can Start Your Own Greenhouse With Healthier Plants… Anytime Of The Year!