95 results about "Phenol degradation" patented technology

The invention discloses a microbial strain which can effectively degrade phenol and relates to alcaligenes faecalis JH1013 CCTCC NO: M 208006 and a method for degrading phenol wastewater by using a fixed alcaligenes faecalis that is produced by alcaligenes faecalis. The method has the following advantages that: 1. the alcaligenes faecalis is easy to culture, the fixing technique is simple, the catalytic degradation effect is good, the high-concentration phenol can be resistance, the phenol degradation capacity is strong, which can high efficiently degrade the phenol wastewater with the concentration of as high as 2000mg. L<-1> and be used repeatedly; 2. hydrotalcite, hydrotalcite-like compounds, nano calcium carbonate, Gamma-Al2O3 or the loading solid base are used as carriers for preparing the fixed alcaligenes faecalis, the elasticity is good, the temperature and pH value resistances are strong, the mechanical strength is high, the degradation performance is stable and the half-time is long; 3. the carriers of the hydrotalcite, the hydrotalcite-like compounds, the nano calcium carbonate and the Gamma-Al2O3 of the fixed cell can be used repeatedly by calcinations; 4. the fixed alcaligenes faecalis is used for degrading the phenol, the degradation process is simple, the conditions are moderate, the environment is friendly, the bacterial cells are difficult to loss, the concentration of the microorganisms in the carriers is high, the degradation speed is fast, the degradation efficiency is high and the secondary pollution is not easy to be caused.

The invention provides a preparation method and a use method of a nano catalyst. The preparation method comprises the following steps of: chemically precipitating tervalent cerium ion (Ce<3+>) in the alkaline environment; and calcining at the air atmosphere to obtain a nano ceria sample. Obtained nano ceria shows good catalytic property in phenol degradation with ozonated water, on such a basis, a water treatment method based on nano ceria catalysis ozonization is built. The preparation method of the nano catalyst is simple; the obtained nano catalyst is uniform in structure, large in specific surface area and obvious in effect; a new application field of a rare earth material in ozonization is developed; and the obtained nano catalyst has a wide application prospect in the aspects of water treatment and environment catalysis.

The invention discloses high temperature-resistant Candidasp. FD-1 for phenolated water degradation. The high temperature-resistant Candidasp. FD-1 is named as Candidasp. FD-1, is preserved in China center for type culture collection which is an international depository authority appointed by the national patent office and is located in Chinese Wuhan university in the Wuhan city, is preserved on May 4, 2014, and has an accession number of CCTCC NO: M2014180. The high temperature-resistant Candidasp. FD-1 for phenolated water degradation has the advantages that 1, the domesticated strain FD-1 has greatly improved phenol degradation efficiency and has the highest adaptable phenol complete-degradation concentration of 1000mg / L, and 2, the Candidasp. FD-1 has the optimal phenol-degradation culture temperature of 25-37 DEG C and the optimal pH of 6.0-7.0, has a wide suitable temperature range and a wide suitable pH range, can resist high-content salt, has the highest salt resistance of 5% considerably higher than the seawater average salinity (3.5%) and is microorganism having a good application prospect.

The invention discloses a method for preparing a stanniferous double-perovskite type phenol photocatalytic degradation catalyst. The catalyst is applied to carrying out a degradation reaction on low-concentration phenol sewage under the condition of simulated sunlight. According to the catalyst, a sol-gel method is used for preparation, and saccharose serves as a complexing agent. The method includes the steps that Sn powder is dissolved into a dilute nitric acid solution in a cold bath first, the obtained light yellow settled solution is then subjected to reacting and complexing with La(NO3)3-6H2O(1 / 8), Fe(NO3)3-9H2O(1 / 8) and polyethylene glycol 2000, and after roasting is conducted for 3 hours in the air atmosphere of 700 DEG C, a pure-phase double-perovskite type La2FeSnO6 photocatalyst sample is obtained. The molar ratio of selected La atoms to Fe atoms to Sn atoms is 2:1:1. The molar ratio of the saccharose to metal cations is 2:1. The method has the advantages that the sol-gel method with the saccharose used as the complexing agent is used for preparation, and the pure-phase double-perovskite type catalyst La2FeSnO6 is synthesized at a low temperature. The preparation method is simple, low in cost and free of pollution. The method has high catalytic activity and good structural stability when being used for low-concentration phenol degradation.

The invention discloses a method for preparing a loaded type Y-type molecular sieve membrane anode material for photoelectric catalytic oxidation, belonging to the technical field of photoelectric catalytic oxidation sewage treatment. The method comprises the following steps: by adopting a Y-type molecular sieve structure guide agent as a crystal seed, performing electrochemical pre-adsorption on the crystal seed to secondarily grow on a conductive support body, so as to prepare a Y-type molecular sieve membrane, and loading nitrogen-doped titanium dioxide on the Y-type molecular sieve membrane by using a sol-gel method. The method is low in cost, simple in equipment, convenient and rapid to operate, high in repeatability in preparing the molecular sieve membrane, high in phenol degradation speed and remarkable in degradation effect.

The invention discloses a halogenated phenol-degrading strain and a microbial agent prepared from the halogenated phenol-degrading strain. The strain is a Gram staining reaction negative strain DCP-2and is Bosea sp. through identification. The strain is preserved in the China Center for Type Culture Collection on December 23, 2019 and has a strain preservation number of CCTCC M20191083. The halogenated phenol-degrading strain DCP-2 can be applied to degradation of 2,4-dichlorophenol (2,4-DCP), o-chlorophenol, p-chlorophenol or m-chlorophenol, and is preferentially applied to degradation of 2,4-DCP in soil. A degradation microbial agent can be used for reducing the residual amount of 2,4-DCP in soil to be 95 percent or more by direct application, and the pollution problem of 2,4-DCP in soil can be solved.

The invention relates to a phenol-degrading fungi and application thereof. The fungi bacterial strain is an Aspergillus flavus fungi strain PHDE-4 and is collected in China General Microbiological Culture Collection Center on August 31st, 2011, wherein the collection number is CGMCC No.5189. The phenol-degrading fungi bacterial strain PHDE-4 provided by the invention has the advantages of stronger environmental tolerance, capability of taking the phenol as the only carbon source and energy source to grow and propagate under wider temperature and pH value and more demanding environmental conditions, and capability of better removing the phenol pollution in the environment.

The invention relates to a phenol degradation fungus. The phenol degradation fungus is preserved in China General Microbiological Culture Collection Center on Aug. 31, 2011, with the preservation number of CGMCCNo.5190. The phenol degradation fungus has the advantage that: phenol degradation fungus strains PHDE-1 provided by the invention have higher environment tolerance, and can grow and reproduce by taking phenol as the only carbon source and energy source under the conditions of wide temperature and pH as well as relatively severe environments so as to remove pollution caused by the phenol.

The invention discloses a screening method and application of a phenol degradation strain, and relates to the technical field of microorganisms. Phenol is used as the only carbon source of the strain,the strain is an acinetobacter radioresistens APH1 (Acinetobacter radioresistens APH1), and is preserved in China Center for Type Culture Collection, Wuhan university, China, the preservation numberis CCTCC M 2019462, and the preservation time is 18 June, 2019. The strain provided by the invention has efficient degradation rate and degradation speed on the phenol, can realize biologic repair ofpolluted soil, can bear various antibiotics, and provides a support basis for repairing pollution in actual environment. The strain is extremely high in rate of removing the phenol in water bodies andsoil, has the advantages of being low in cost, free from secondary pollution, capable of saving energy resources and the like, and has great application prospects.

The invention discloses a preparation method and application of efficient Fe3O4 / FeAlO4 composite coating Fenton-like catalyst relate to preparation methods and application of Fenton-like catalysts, and aims to solve the problems that the conventional Fenton-like catalyst is difficult to separate and recycle, and poor in mechanical property. The preparation method comprises the following steps: I, carbon steel is polished; II, bright carbon steel is connected with the anode of a power supply, and serves as an anode; a stainless steel electrolysis bath is connected with the cathode of the power supply, and serves as a cathode; III, plasma electrolysis reaction is carried out to obtain the efficient Fe3O4 / FeAlO4 composite coating Fenton-like catalyst. The Fe3O4 / FeAlO4 composite coating Fenton-like catalyst prepared according to the preparation method can achieve a 100 percent phenol degradation efficiency within 60 min. The preparation method provided by the invention can be used for preparing the efficient Fe3O4 / FeAlO4 composite coating Fenton-like catalyst.