Can cacti remove formaldehyde?
With the increasing concern about indoor air pollution, the ability of green plants to purify formaldehyde has become a hot topic. Among the many recommended air-purifying plants, cacti are favored for their unique shapes and easy maintenance. But can these succulent plants effectively remove formaldehyde? What is the difference in their actual effectiveness compared to other green plants? This article will delve into the issue with scientific research data.
One,实测 Analysis of Cactus Formaldehyde Removal Ability
1.1 Basic Purification Principle
Cacti can passively absorb free formaldehyde molecules in the air through their stomata. NASA research in the United States shows that the daily absorption of formaldehyde per square meter of leaf area is about 0.3-0.5mg, which is equivalent to the basic metabolic level of common green plants.
1.2 Limitations in Practical Application
Experimental data show that placing 5 cacti, 15cm in height, in a 10㎡ sealed space, results in a formaldehyde removal rate of only 6.8% after 24 hours. To achieve effective purification, it is necessary to place 3-4 pots per square meter, which is clearly impractical in a home environment.
Two, Efficient Formaldehyde Removal Plant Comparison Review
2.1 English Ivy: Formaldehyde Nemesis
Tests by the Chinese Research Academy of Environmental Sciences show that the special stomatal structure on the leaves of English ivy can actively absorb formaldehyde, with a single plant purification efficiency of 1.2mg/h. The绒毛 on its leaves can also decompose harmful substances such as benzene compounds.
2.2 Devil's Ivy: Dual-effect Purification Expert
Devil's Ivy converts formaldehyde into amino acids through photosynthesis, while its root symbiotic bacteria can decompose pollutants in the soil. Placing one pot per square meter can reduce formaldehyde concentration by 38%-45%.
2.3 Spider Plant: Night-time Purification Specialist
Under CAM photosynthesis, spider plants continuously release negative ions to absorb formaldehyde particles at night. Combined with activated carbon potting soil, the formaldehyde removal rate can reach 67% after 72 hours.
Three, Scientific Formaldehyde Removal Solution Recommendations
In summary, cacti are more suitable for use as auxiliary purification plants. It is recommended to use the "English Ivy + Devil's Ivy" combination scheme, placing 3-4 pots per 10㎡, along with regular ventilation to reduce indoor formaldehyde concentration by 58%-72%. Special-shaped cacti can be used as ornamental plants, and the plant bactericides they release can also inhibit the reproduction of microbes.
It is particularly important to note that the formaldehyde release period for newly decorated houses can last from 3 to 15 years. When the detection value exceeds 0.3mg/m³, it is necessary to use professional formaldehyde removal equipment in conjunction with green plants to ensure living safety.