Bamboo, elegant and straight, evergreen all four seasons, can be used for greening and as materials. In their prime, the underground stems grow new shoots every year which then become bamboo. Bamboo shoots are provided as health food for humans; if shoots are left to grow into bamboo, they ensure the prosperity of the bamboo family, absorbing carbon dioxide and releasing oxygen, thus maintaining a beautiful ecological environment. When cut down for use as material, bamboo wood can "replace timber" and be used to make furniture, farm tools, various natural boards, woven crafts, and daily necessities. It can also "surpass timber" by being used to manufacture high-strength, high-elasticity modulus container bottom plates, railway flatcar floors, and excellent, colorful bamboo flooring products that normal timber cannot produce. Less known is that it can also be made into bamboo charcoal, becoming a guardian of human health and kitchen utensils.
China is the birthplace of charcoal in society. As early as a thousand years ago during the Tang Dynasty, Bai Juyi left behind the tragic poem "The Old Charcoal Seller." Besides using charcoal as fuel for cooking and heating, the ancients cleverly used it as an anti-corrosion, sterilizing, and preservative agent, which can be found in abundance in ancient Chinese tombs.
Bamboo is a naturally growing organism. Its main chemical contents are lignin, cellulose, hemicellulose, and components such as sugars, starches, proteins, and many other nutrients. Its structure and chemical composition are both similar to and different from wood. After bamboo forms bamboo charcoal under special conditions, although it loses its former qualities as a material—such as straight grain, simple color, high strength, and good toughness—it becomes black charcoal with certain strength and hardness. Although bamboo charcoal is completely black inside and out and may not look impressive, it possesses a noble spirit of "selflessness and dedication." In today's highly developed scientific era, where the human living environment has been severely damaged, it will become a health guardian for humanity. Wherever it goes, it does not ask for conditions or rewards, bravely sacrificing itself. When encountering air, it absorbs harmful gases from the air, purifying the indoor air and making it fresh. In water, it can absorb harmful substances from the water, turning ordinary water into quality drinking water. It can also help people prevent and cure diseases, enhancing physical fitness. The noble spirit of bamboo charcoal, which is "completely selfless and dedicated to others," mainly comes from the following functions:
Bamboo charcoal can absorb multiple harmful gases from the air.
Studies show that bamboo charcoal's adsorption capacity for harmful gases in the air (formaldehyde, ammonia, benzene, toluene, trichloromethane) is: formaldehyde adsorption rate 16%-19.3%, continuous adsorption time up to 24 days. Adsorption rates for benzene and toluene are 8.69%-10.08% and 5.65%-8.42%, respectively, reaching near equilibrium within about one day. Ammonia adsorption rate is 22.73%-30.65%, with continuous adsorption lasting up to 24 days. Trichloromethane adsorption rate is as high as 40.68%, with continuous adsorption lasting up to 24 days.
Humidity regulation function of bamboo charcoal.
When environmental humidity is very high, bamboo charcoal uses its moisture-absorbing effect to adsorb moisture from the indoor air; conversely, when environmental humidity is very low (dry), bamboo charcoal releases moisture through desorption, thereby regulating air humidity. Research results show that at 95% relative humidity, the moisture absorption rate can reach 14%, meaning that placing 100 kilograms of bamboo charcoal indoors can absorb 14 kilograms of water vapor from the air. When air humidity decreases, bamboo charcoal can release moisture on its own, achieving the function of humidity regulation.
Bamboo charcoal can adsorb multiple harmful substances from water.
Large amounts of wastewater produced by human real-life production and activities are discharged into rivers, destroying the ecological system of river water bodies and polluting the water. Bamboo charcoal can purify and significantly improve important water quality indicators in water bodies. Preliminary studies show that bamboo charcoal effectively removes coloration, turbidity, and chemical oxygen demand (COD) from sewage; it removes nearly 100% of total nitrogen from sewage; it has a certain role in removing organic phosphorus pesticides from sewage, with removal rates of 70% for dimethoate and 60% for methyl parathion.
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