8results about How to "Achieve biodegradation" patented technology

This invention relates to a production process for biodegradable meltblown nonwoven fabric, comprising the following steps: S1, plasticizing and extruding PLA mixed raw materials at a temperature of 80-90℃, and plasticizing and extruding PBAT mixed raw materials at a temperature of 80-90℃; S2, selecting 75-80 parts by weight of PLA mixed raw materials, 25-30 parts by weight of PBAT mixed raw materials, 15-18 parts by weight of grafted material, and 3-5 parts by weight of electrostatic electret masterbatch; S3, uniformly dividing the grafted material into N parts, and feeding 1 / N of the grafted material, 75-80 parts by weight of PLA mixed raw materials, 25-30 parts by weight of PBAT mixed raw materials, and 3-5 parts by weight of electrostatic electret masterbatch into a third screw extruder to form intermediate raw materials; S4, extruding the melt mixture obtained in step S3 through a spinneret; S5, the meltblown fibers in step S4 are cooled by negative pressure suction molding and then enter the high-voltage electrostatic electret to carry charge. The present invention has the following advantages: it can achieve biodegradability, avoid white pollution, and at the same time ensure that the meltblown fabric produced has high filtration efficiency.

This invention discloses a method for preparing a modified chitosan whisker-reinforced and toughened PBAT microfoamed composite material. Biodegradable and high-modulus chitosan whiskers are selected as the reinforcing agent, enabling the composite material to achieve full biodegradability. Through surface modification technology, PBAT segments with the same composition as the PBAT matrix are introduced onto the surface of the chitosan whiskers. This design ensures good compatibility between the chitosan whiskers and the matrix, resulting in thorough dispersion within the matrix and achieving a more efficient reinforcement and toughening effect than traditional reinforcing agents. Simultaneously, the grafted and modified chitosan whiskers can increase the melt viscosity and melt strength of the PBAT matrix, thereby improving its foaming properties.

The residue treatment platform comprises a shell, a conveying mechanism, a crushing and grinding cavity, a dehydration reduction mechanism and a biodegradation cavity, a feeding port is formed in the front end of the shell, the feeding port is connected with the conveying mechanism, the conveying mechanism is connected with the crushing and grinding cavity, the crushing and grinding cavity is connected with the dehydration reduction mechanism, and the biodegradation cavity is connected with the shell. According to the kitchen waste treatment device, the conveying mechanism, the crushing and grinding cavity, the dewatering and grinding mechanism and the biodegradation cavity are arranged, crushing and biodegradation of kitchen waste are achieved, the treatment difficulty is lowered, the problem of kitchen waste treatment is solved, and the kitchen waste treatment device is high in practicability and easy to popularize. Meanwhile, the kitchen waste treatment efficiency is improved.

The invention relates to the field of environmental pollution remediation, in particular to a dehalogenation bacillus strain with dichloromethane anaerobic degradation capacity and application of the dehalogenation bacillus strain. The strain is a dehalogenator strain DCM (Dehalobacter sp.) which is preserved in the China General Microbiological Culture Collection Center (CGMCC) on November 30, 2021, the preservation address is Institute of Microbiology, Chinese Academy of Sciences, No.3, No.1 Yard, Beichen West Road, Chaoyang District, Beijing, and the preservation number is CGMCC No.24007. The invention further discloses a preparation method of the dehalogenator strain. The novel dehalogenation bacillus strain DCM provided by the invention is separated and purified from polluted river sediment, the strain is gram-positive, rod-shaped and smooth in surface, the length of the strain is 1-2 mu m, and the diameter is 0.3-0.5 mu m. The strain can completely convert 160 micromoles of dichloromethane into formate and acetate within 7 days in an anaerobic inorganic salt culture medium, the degradation rate is as high as 32 micromoles D <-1 >, and it is indicated that the strain can efficiently degrade dichloromethane pollutants and has wide application prospects in environmental sewage treatment and environmental remediation.

This invention discloses an antibacterial, dust-free, and environmentally friendly straw cat litter and its preparation method, relating to the field of cat litter preparation technology. The finished cat litter (96-144g) contains the following internal components: 60-90g straw powder, 10-15g yew leaves, 22.94-34.41g guar gum, 2.29-3.44g starch, 0.8-1.2g calcium propionate, with the remainder being water. Cat litter made using straw cores is rich in cellulose and has strong water absorption. The raw materials are natural products, possessing a natural plant fragrance, good deodorizing properties, and low price. Compared to other cat litters, straw core cat litter has strong water solubility and can be directly flushed. The addition of yew leaves can prevent common cat diseases, primarily targeting major zoonotic fungi in cats, such as Microsporum and Trichophyton mentagrophytes. Furthermore, this cat litter is directly flushable, has high water solubility, supports biodegradation, and reduces the probability of cats developing diseases.

This invention discloses a field of environmental pollution remediation, and more specifically, relates to a dehalobacterium strain capable of anaerobic degradation of dichloromethane and its applications. The strain is a dehalobacterium strain DCM, which was deposited on November 30, 2021, at the China General Microbiological Culture Collection Center (CGMCC), Institute of Microbiology, Chinese Academy of Sciences, No. 3, No. 1 Beichen West Road, Chaoyang District, Beijing, with accession number CGMCC No. 24007. The novel dehalobacterium strain DCM provided by this invention was isolated and purified from contaminated river sediments. The strain is Gram-positive, rod-shaped, with a smooth surface, a cell length of 1-2 μm, and a diameter of 0.3-0.5 μm. It can completely convert 160 μmol of dichloromethane into formate and acetate within 7 days in an anaerobic inorganic salt medium, with a degradation rate as high as 32 μmol / L. ‑1 This indicates that the strain can efficiently degrade dichloromethane pollutants and has broad application prospects in environmental wastewater treatment and environmental remediation.

The application belongs to the technical field of fertilizers, and particularly relates to an environment-friendly urea slow-release fertilizer and a preparation method thereof. The preparation method of the urea slow-release fertilizer comprises the following steps: S1. Modified sodium-based montmorillonite is added to water, and a modified sodium-based montmorillonite suspension is obtained after ultrasonic dispersion; urea and puhuizi polysaccharide are uniformly mixed and preheated to obtain mixed particles; S2. The modified sodium-based montmorillonite suspension is sprayed on the surface of the mixed particles, and the environment-friendly urea slow-release fertilizer is obtained after drying. The method is simple and easy to operate, and the obtained fertilizer has excellent slow-release performance.

The present invention discloses a blocking device, which includes a first disc, a second disc, a waist and a connecting part; wherein the first disc and the second disc are connected through the waist; the first disc is used to be placed on the first side of the part to be blocked; the second disc is used to be placed on the second side of the part to be blocked; the waist runs through the part to be blocked; the first disc and / or the second disc are provided with the connecting part on one side close to the part to be blocked, and the connecting part is used to be fixedly connected with the surrounding tissue of the part to be blocked. The present invention can accurately block the part to be blocked, and can make the first disc, the second disc and the waist fit well on the surrounding tissue wall of the part to be blocked, and can prevent the blocking device from falling off, and can prevent excessive blocking by using the blocking device, so as to prevent the blood flow of the collateral vessels of the part to be blocked from being blocked and avoid paralysis.