Monday, May 24, 2010

The low down on eco friendly cottons...people!


Adapted from Your Naturally Healthy Home: Stylish, Safe, Simple, by Alan Berman.

Organic Cotton Vs. Traditional Cotton? Ordinary cotton is treated with a variety of chemicals as it goes through the processes from plant to fabric, and residues remain even after washing. This interesting and informative chart, found in Your Naturally Healthy Home, follows the myriad of traditional cotton chemical treatments involved in cotton cultivation, harvesting, scouring, dyeing, printing, and finishing, and compares them to the methods of processing organic cotton.

Cultivation
*Traditional Cotton
Chemicals Used: Synthetic chemical pesticides and fertilizers that may be highly toxic and cause environmental problems.
Global Consequences: Chemicals cause decline in soil fertility and erosion; aerial spraying affects other crops; high water use and water supplies polluted.
Health Consequences: Traces of chemicals remain and are potentially carcinogenic.

*Organic Cotton
Organic matter fertilizes soil and renews soil productivity; less water used.

Harvesting
* Traditional Cotton
Chemicals Used: Herbicides used to defoliate and make picking easier.
Global Consequences: Chemicals pollute ground and rivers; harvesting machinery compacts the ground and reduces soil productivity.
Health Consequences: Traces of chemicals remain and are potentially carcinogenic.

* Organic Cotton
Hand picked (no defoliation, machinery, or chemicals); hand picking means less waste.

Scouring, Washing, and Bleaching
* Traditional Cotton
Chemicals Used: Chlorine (see xxx on care2), hydrogen peroxide, APEO (alkylphenoloxylate, a hormone disrupter), EDTA (ethylenediamine tetra-acetate; binds with heavy metals in rivers and streams and activates them), and volatile organic compounds (VOCs) that react with sunlight to form ground-level ozone.
Global Consequences: Synthetic disinfectants are slow to biodegrade; chlorine emissions pollute atmosphere.
Health Consequences: Traces of chemicals are carcinogenic and can affect the nervous system.

* Organic Cotton
Natural spinning oils biodegrade easily; natural processing such as potato starch used; no chlorine used.

Yarn Dyeing
* Traditional Cotton
Chemicals Used: Compounds of iron, tin, potassium, and VOCs.
Global Consequences: Large quantities of water used for washing out dyes.
Health Consequences: Water polluted by heavy metals.

* Organic Cotton
Natural vegetable dyes or low-impact synthetic dyes; or cotton is color grown.

Printing
* Traditional Cotton
Chemicals Used: Solvent-based inks containing heavy metals, benzene, and organochlorides.
Global Consequences: Waste water is polluted with heavy metals; emissions form harmful ozone.
Health Consequences: Toxic residues cause problems of the central nervous system, respiratory system, and skin, as well as head-aches, dizziness, and eye irritations.

* Organic Cotton
Natural vegetable and mineral inks and binders are used.

Finishing (easycare, stain resistance, fireproofing, mothproofing, softening, deodorizing, anti-static, and mercerizing treatments)
* Traditional Cotton
Chemicals Used: Formaldehyde, caustic soda, sulfuric acid, bromines, urea resins, sulfonamides, halogens, and bromines.
Global Consequences: Waste water has a high acid content; emissions to atmosphere.
Health Consequences: Chemical traces on the fabric can cause burning eyes, nose, and throat, as well as difficulties with sleep, concentration, and memory. Can increase susceptibility to cancer; emissions of chemicals from fabric increase with temperature.

* Organic Cotton
No enhancement fishes used.

Transportation
* Traditional Cotton
In addition to the above, there are environmental consequences of transporting huge quantities of chemicals from the manufacturing plant to the place of cultivation, as well as the additional journeys involved for all stages of cotton production, from the raw material to place of manufacture, finishing, and then to distributor and user.

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