1. Jinan Formaldehyde Removal Company: Negative Ion Purification
The size of indoor formaldehyde molecular structure is above and below 0.27 nanometer technology, the effect of surface population and its absorbent substance, the fusion of air negative ions and pathogenic bacteria cells in the gas, causes the energy transfer and structural change inside the body cells, resulting in its death, and causes the floating smoke, dust, bee pollen in the gas to absorb fine particulate matter and the natural foundation to settle, exceeding the purpose of purifying indoor air.
Advantages: It is relatively simple to use; high voltage discharge and other technologies make air produce negative ions, which combine with particulate pollutants in the air, make tiny particles gather and settle, and have a certain role in purifying air.
2. Removal of formaldehyde with water, vinegar and black tea
Many people on the Internet have explained in detail that because formaldehyde dissolves in water, it can put many more sinks at home to remove formaldehyde, or use vinegar or green tea to make tea. Indoor formaldehyde dissolves in water, water, alcohol and ether. It is an objective fact that indoor formaldehyde in mineral acid in the gas is integrated into the whole process of indoor formaldehyde fitness exercise after meeting water, which is similar to the basic principle of activated carbon absorption. The contact area with air is only the size of the water basin, and the specific surface area of the pore inside 1 gram of activated carbon can reach the size of a football field. Even if a hundred pots of water are placed in the room, the adsorption effect will not be much stronger than that of a small bag of activated carbon. Therefore, it is obviously unrealistic to use water, black tea and vinegar to adsorb formaldehyde. The release of formaldehyde is closely related to indoor temperature and humidity. With the increase of air temperature, the formaldehyde emission will increase greatly. The experimental results show that the relative air temperature increases by 10%, and the indoor formaldehyde emission will increase by about 5%.
Formaldehyde absorption by plants
Plants can inhale some harmful substances through photosynthesis, but the effects of these methods are extremely limited. The reasons are as follows:
1) Green plants carry out photosynthesis, which usually absorbs a part of harmful substances in the daytime, but not at night. The regularity of people's food, clothing, living and transportation is usually outdoors in the daytime. At night, in the room, when people most need air filtration, green plants have no method to have relative efficacy.
2) The harmful substances digested and absorbed by green plants are extremely inadequate. The release value of indoor formaldehyde is less than 0.08 mg/cubic according to national industry standards. Most newly decorated houses have indoor formaldehyde higher than 0.2 mg/cubic. The green bamboo with high formaldehyde removal efficiency only absorbs 20 mg of indoor formaldehyde per hour. With a 100 square meter, the room height is 3 meters, and the formaldehyde value is 0.2 mg/cubic. For a square-meter room, it also needs 1800 pots of green radish to fill up the whole room space, so that formaldehyde can be reduced to 0.08 mg. This is still done in the daytime when the light is sufficient and no formaldehyde is released during the absorption process. In fact, formaldehyde is still continuously released in the furniture after decoration. Therefore, plants can only be harmful to formaldehyde, benzene and other harmful substances. Quality plays an auxiliary role in governance.
6. Plant Sources
植物源空气净化喷洒雾化为萜类化合物具有广泛生物活性,但依赖植物体的传统生产方式是推广应用的瓶颈之一.采用合成生物学策略,创制微生物"细胞工厂",有望为植物源萜类化合物低成本、可持续供给提供先进技术.丹参酮为我国传统中药丹参的主要脂溶性活性成分,属于松香烷类去甲二萜化合物.该研究组与中医科学院中药资源中心黄璐琦研究员课题组合作,前期构建了高产丹参酮合成前体次丹参酮二烯的酵母工程菌株(J. Am. Chem. Soc.,2012, 134(6): 3234).
Atomization of terpenoids from plant-derived air purification spraying has a wide range of biological activities, but the traditional production mode depending on plants is one of the bottlenecks to promote its application. Using synthetic biology strategy to create a microbial "cell factory" is expected to provide advanced technology for low-cost and sustainable supply of terpenoids from plant sources. Tanshinone is the main lipid-soluble active ingredient of Tanshinone, a traditional Chinese medicine. A yeast engineering strain (J. Am. Chem. Soc., 2012, 134 (6): 3234) producing tanshinone diene precursor was constructed by our team in collaboration with Huang Luqi, a researcher at the Center of Traditional Chinese Medicine Resources, Chinese Academy of Sciences. http://www.jntkzl.com./