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Surfing is a sport that is synonymous with nature. The crashing waves Santiago Casilla Youth Jersey , the fresh sea air and the reliance on mother nature for good surf, all suggest that this is the most wholesome of extreme sports. Environmentalists have recently started rallying however, about the real harms of surfboard production. In actual fact, the production of surfboards has many negative effects on both the environment and peoples health.

Many of the surfboards these days are formed from a core of polyurethane foam. 1 or 2 layers of fibreglass are then added to all sides and the whole board gets a polyester resin coating. A substance widely considered as carcinogenic can be found in the foam, named toluene diisocyanate. Styrene fumes can also be emitted during its production and exposure to styrene can cause headaches Matt Joyce Youth Jersey , nausea and malfunctioning of the nervous system according to health officials. Further to this, production also releases volatile organic components (VOCs) and carbon into the atmosphere. Most surfboard materials these days score very low on biodegradability also.

There has been so much attention on the harmful nature of surfboard production that a Californian company, run by Gordon Clark, who make blank boards recently shut down. 85 percent of all blanks came out of Clark's factory at one point but when State of California leaned on him heavily it was the last straw and he made the decision to shut down the equipment for good. This had led to the predicted shortage of pre-shaped surfboards in the States and so many big companies are in desperate need of alternatives.

Incredibly, one of these alternatives has been found in England Marcus Semien Youth Jersey , in the county of Cornwall. Biofoam is a new material that was co-founded by the same man responsible for setting up the charity Surfers Against Sewage. The material is around 65 percent more renewable and emits 35 percent less harmful toxins due to the fact it is 45 percent plant based. Further to this, the old polyester resins have been replaced on their new 'Ecoboard' with an 90% natural alternative.

Inquires have come from all across the globe, asking for samples from the company who manufacture the new Biofoam and Ecoboards. It is still early days but they soon hope to start applying their eco-technology to the creation of snowboards also.
Landfill engineering and containment is a task that demands precise planning and the use of materials to prevent chemicals from leaching into the environment. It's a known fact that poor waste containment can contaminate water and soil quality to lead to poor health. Using geomembranes in landfill engineering can significantly reduce this.

Geomembranes are polymeric sheets made of PVC, polyethylene, synthetic rubber and similar materials. They're known for their impermeability to control fluid and gas from leaking into environments. They're mostly used as liners for waste liquids Jed Lowrie Youth Jersey , golf course water holes, water and waste conveyance canals and to waterproof rockfill dams, concrete dams, pipelines and tunnels. This ability to contain fluid and gas makes them fundamental tools in waste management.

Like all man-made materials, in order for geomembranes to successful waterproof and contain materials Khris Davis Youth Jersey , they must be made of high quality products. Repeated testing and field tests produce accurate readings while installation by trained and certified personnel ensures that membranes work to full capability.

Geomembranes vary in chemical resistance, flexibility and cost depending on what material is used to construct them. Here's a look at the properties of different grades of plastic and rubber and what they offer.

HDPE: High density polyethylene is known for being relatively inexpensive but with good chemical resistance and weld strength. However, it has low puncture resistance, may crack under stress and has a high degree of thermal expansion.

PVC: Polyvinyl chloride or PVC can have fabricated seams, has good layflat behavior and is easy to seam. Conversely Rickey Henderson Youth Jersey , it doesn't fare well under high and low temperatures and doesn't resist UV light well.

fPP-R: fPP-R, a polypropylene and rubber-based material, can be factory fabricated and has sound multiaxial properties. It handles strain well and maintains performance under low and high temperatures. However, chlorinated water and hydrocarbons weaken strength and durability.

LLDPE: Linear low density polyethylene is flexible, has better layflat and better multiaxial strain properties compared to HDPE. These benefits are balanced by poorer chemical and UV resistance Andrew Triggs Womens Jersey , benefits offered by HDPE.

EPDM: EPDM or ethylene propylene diene monomer is a synthetic rubber known for its sealing characteristics. In geomembranes, it shows good performance in low temperatures, very goof layflat behavior and sound resistance to UV light. What it lacks is a resistance to oils and hydrocarbons in addition to having less than satisfactory seam quality.

Butyl rubber: Also a synthetic rubber, butyl rubber shows good resistance to UV light and weathering. Its drawbacks include difficulty seaming, low tear strength and poor resistance to hydrocarbons.

Irrespective of what type of geomembrane is used Kendall Graveman Womens Jersey , landfill preparation is crucial to deciding how effective liners are. For instance, sharp objects must be removed from the area as even if the membrane resists punctures well, weather conditions and chemicals will cause it to wear down over time.

When combined with geotextiles - plastic fabrics that separate water, waste and soil - geomembranes see increased resistance to tears and containment. In fact, most landfills lined with membranes are used in conjunction with geotextiles.

Geomembranes are also used in leachate ponds to prevent leachate from seeping into soil. A drainage system Santiago Casilla Womens Jersey , filters, sumps and pu. Cheap Jerseys Cheap Jerseys Wholesale Cheap Jerseys Free Shipping Cheap Authentic Jerseys Cheap MLB Jerseys Wholesale Jerseys Cheap NBA Jerseys Online Wholesale Jerseys China Wholesale Jerseys China Wholesale NFL Jerseys China

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