Views:0 Author:Site Editor Publish Time: 2021-04-03 Origin:Site
Environmental protection is an enduring topic in human society. In recent years, the technology of HPBCD has been continuously developed, and the cavity structure of technical grade HPBCD has been fully utilized. According to the interaction between high purity hydroxypropyl betadex cyclodextrin and environmental pollutant molecules, it has many new applications in the field of environmental protection.
Here is the content list:
Why use hydroxypropyl betadex cyclodextrin as a chelating agent for lead ions?
How to use cyclodextrin to treat nitrobenzene in wastewater?
How does hydroxypropyl betadex cyclodextrin capture harmful substances in the air?
As a heavy metal chemical element, lead is stored in a large amount in the soil environment. Lead is chemically stable and difficult to be decomposed, which poses a potential threat to human health.
Lead can cause damage to the stomach, kidneys, and nerves, leading to lead-induced anemia, high blood pressure and other diseases, and at the same time affect the intellectual development of children. Before hydroxypropyl betadex cyclodextrin was used to solve lead pollution, the chelating agent used by people was expensive and easily caused secondary pollution.
Hydroxypropyl betadex cyclodextrin has a special structure, and its hydrophobic inner cavity can form a reversible supramolecular inclusion complex with the substrate through non-covalent interaction. Hydroxypropyl betadex cyclodextrin can not only include organic guest molecules, but also coordinate with metal ions.
The clathrate formed by hydroxypropyl betadex cyclodextrin and lead is non-toxic and biodegradable. It has very low adsorption capacity to soil particles within a wide range of pH values, which has advantages.
Hydroxypropyl betadex cyclodextrin has a significant solubilizing effect on soil lead ions;
The solubilization effect of hydroxypropyl betadex cyclodextrin is affected by the physical and chemical properties of the soil, especially the pH value;
When the soil pH conditions are not optimal, hydroxypropyl betadex cyclodextrin still has a significant solubilization effect on lead ions in the soil, and increasing its concentration has a better solubilization effect.
Industrial wastewater is an important indicator in environmental governance. Among them, nitrobenzene is a highly toxic organic compound, which can cause great pollution when discharged into the environment. There are very strict restrictions on its discharge in industrial wastewater.
The treatment methods of p-nitrobenzene wastewater mainly include chemical reduction method, activated carbon adsorption method and biochemical method. Microbial degradation is an economical and effective purification method for industrial and domestic wastewater, but the high toxicity of nitrobenzene wastewater limits its use.
Studies have confirmed that adding nutrients can stimulate the biodegradation of toxic and refractory organics. Hydroxypropyl betadex cyclodextrin is a cyclic oligosaccharide that can form clathrates with many organic compounds to reduce the biological toxicity of organics.
Hydroxypropyl betadex cyclodextrin can form an inclusion compound with nitrobenzene, thereby increasing the tolerance of degrading bacteria to nitrobenzene. Hydroxypropyl betadex cyclodextrin has little effect on degradation when the concentration of nitrobenzene is lower than the tolerable concentration of degrading bacteria.
However, when the concentration of nitrobenzene is higher than the tolerable concentration of the degrading bacteria, the addition of hydroxypropyl betadex cyclodextrin can not only shorten the stagnation time of the degrading bacteria, but also promote the growth of the degrading bacteria and accelerate the nitrobenzene degradation.
The application of hydroxypropyl betadex cyclodextrin in air pollution control is mainly due to its electricity-rich hydrophobic cavity that can contain and absorb harmful components in the air.
PAHs organic pollutants are widely distributed in the environment and have strong carcinogenicity, teratogenicity and mutagenicity. The concentration of these substances in the atmosphere is usually very low and difficult to remove.
The crystalline hydroxypropyl betadex cyclodextrin has a cage or tube structure, and the voids between the crystal lattices can also bind gaseous organic molecules. Therefore, the solid state hydroxypropyl betadex cyclodextrin has the ability to trap PAHs from the gas phase.
Whether for air, water or soil, hydroxypropyl betadex cyclodextrin powder can be used as a good pollution control solution. Shandong Binzhou Zhiyuan Biotechnology Co., Ltd. is a professional manufacturer of crystalline hydroxypropyl betadex cyclodextrin, and our products are favored by many customers. Consult our customer service, and you can get a customized hydroxypropyl betadex cyclodextrin pollution control solution.