Energy Saving And Emission Reduction: Cotton Clothing Deserves

Wearing cotton clothes is not only breathable and skin friendly, but also can reduce CO2 emissions. Yesterday, "Climate change and Low carbon textiles The "High level Forum" was held in Shanghai, and more than ten academicians and experts from all over the country followed the“ Carbon footprint ”: Compared with various chemical fiber fabrics, cotton clothing is conserve energy ,reduce emissions Experts, especially organic cotton fabrics, can reduce CO2 emissions by about 70%.

　 Cotton and linen fabrics are more environmentally friendly

As you know, a white long sleeved cotton women's shirt, weighing more than 200g, emits about 10.75kg of carbon in the whole life cycle from cotton farming to textile manufacturing to transportation, distribution, consumption and use, and waste gas treatment, which is 50 times the weight of the shirt itself. Zhou Xiang, an academician of the Chinese Academy of Engineering and a professor of Donghua University, pointed out in the report "International and Domestic Dynamics of Reducing Greenhouse Gas Emissions in the Textile Industry" that it is estimated that the world produces about 60 billion kilograms of fabric every year, and consumes an estimated 1 trillion kilowatt hours of electricity and up to 9 trillion liters of water. The entire textile industry is one of the industries that emit the largest amount of greenhouse gases on the earth.

However, the amount of CO2 emitted from the production of different fiber fabrics is different. For example, produce 1 ton of synthesis fibre The CO2 emissions are much more than those of natural fiber cotton or hemp production, and the CO2 emissions in the whole production process of acrylic fiber and nylon clothing are more. In the production process of natural fiber, especially organic cotton, CO2 emissions are less. Data shows that in the United States, the carbon emission of each ton of organic cotton is 60% less than that of traditional cotton, and the organic cotton produced by renewable energy can reduce CO2 emissions by 90%.

The potential of reducing carbon emissions during laundry is also great. For example, if the water temperature is 30 ℃ when washing clothes in a washing machine, 100 grams of CO2 will be emitted less than 40 ℃.

　　 Straw fibre Ready to wear

In order to reduce the overall carbon emissions of the textile industry, in addition to producing and wearing more cotton and linen fabrics, the proportion of chemical fiber fabrics must be significantly reduced. At present, scientists all over the world are actively studying biomass polyester fiber. Biomass fiber mainly comes from plants, crops, various agricultural wastes and by-products. For example, corn or other cereal starches are converted into sugar after fermentation, and then lactic acid is made by lactic anhydride bacteria. After polymerization, they are melted and filamentated, and finally made into corn fiber bedding, which can also be made into polylactic acid Fiber car interior, etc.

A large number of agricultural straws burned every year in the suburbs of Shanghai are also expected to become biomass sources for various clothing fabrics. Jiang Shicheng, an academician of the Chinese Academy of Engineering, told the reporter that the key technology of straw fiber production in China will make a breakthrough within five years. In another 10 years or so, straw fiber products are expected to enter the industrialization and eventually dress up people's lives.