7 results about "Phenol adsorption" patented technology

The invention discloses a desorption regeneration method of chlorinated phenol adsorption resin, which comprises the following steps: adsorbing 2, 4-dichlorophenol by using macroporous adsorption resin to obtain a byproduct 5-crude hydrochloric acid, then respectively carrying out desorption regeneration by using a first regenerant and a second regenerant, washing the obtained resin with water, and recycling to adsorb impurities in the crude hydrochloric acid. And the first regenerant and the second regenerant can be uniformly collected, separated and recycled. According to the method, methylbenzene and alcohol substances are respectively used as regenerant, efficient desorption and regeneration of the macroporous adsorption resin containing impurities such as chlorophenol are realized, and the method is simple, low in cost and capable of meeting environmental protection requirements.

The present invention relates to the field of microbial technology, in particular to phenol removal bacteria and phenol adsorption humus. The phenol removal bacteria include Bacillus sp. Clay bacillus and Bacillus Bacillus paranthracis At least one of; the Bacillus Clay bacillus It was deposited in Guangdong Provincial Microbiological Culture Collection Center on May 14, 2025, with the deposit number GDMCC NO: 66330; the Bacillus Bacillus Paranthracian It was deposited with the Guangdong Provincial Microbial Culture Collection on May 14, 2025, with the deposit number GDMCC NO: 66331. The phenol-removing bacteria of the present invention can grow and metabolize using phenol as a carbon source. Furthermore, the phenol-adsorbing humus prepared by adding the phenol-removing bacteria solution of the present invention can significantly improve the phenol removal rate.

The preparation method comprises the following steps: roasting coal gangue to obtain metakaolin, preparing a liquid guiding agent from sodium hydroxide, metakaolin and water glass according to a ratio of n (Na2O): n (A12O3): n (SiO2): n (H2O) of (15-16): 1: (14-16): (300-350), carrying out a hydrothermal reaction on the sodium hydroxide, metakaolin, water glass and the liquid guiding agent according to a ratio of n (Na2O): n (A12O3): n (SiO2): n (H2O) of (3-11): 1: (8-20): (100-500), roasting at a high temperature to obtain a Y-type molecular sieve, and drying the Y-type molecular sieve to obtain the modified coal gangue based adsorbent for adsorbing phenol. And fully dipping with a CTAB solution, and drying to obtain the modified Y-type molecular sieve. The composite material is used as an adsorbent for adsorption treatment of phenol in phenol-containing wastewater, has good adsorption performance and regeneration capacity, and can realize efficient adsorption purification treatment of phenol in phenol-containing wastewater.

The application discloses an intercalation coal gangue-based surface molecular imprinting adsorption material and a preparation method. First, intercalation coal gangue is used as a carrier, phenol is used as a template molecule, methacrylic acid is used as a functional monomer, ethylene glycol dimethacrylate is used as a crosslinking agent, azobisisobutyronitrile is used as an initiator, a surface molecular imprinting reaction is carried out on the surface of the intercalation coal gangue, and a polymer layer is formed. The layer fixes the template molecule and the functional monomer assembly together. The phenol template molecule is removed by elution, and finally, the intercalation coal gangue-based surface molecular imprinting adsorption material with a structure having a specific adsorption pore size is obtained. The intercalation coal gangue-based surface molecular imprinting adsorption material is prepared by mixing coal gangue as raw material after treatment with a solution of an intercalation agent with a certain concentration. The intercalation process includes direct intercalation of dimethyl sulfoxide, two intercalations of methanol, and macromolecular intercalation of cetyltrimethylammonium bromide, the intercalation process and imprinting effect are optimized, and the specific adsorption of phenol on the phenol adsorption performance is improved.

This invention relates to the field of wastewater treatment technology, specifically a method for recovering phenol and ammonia from phenol and ammonia wastewater generated during semi-coke production. The method involves adding a required amount of alkali to the phenol and ammonia wastewater and then feeding it into a deammoniation tower for deammoniation. The resulting phenol-containing ammonia water is adsorbed and purified to obtain pure ammonia water. Solid sodium sulfate is added to the deammoniation liquid to obtain a salt solution. Phenol is precipitated through salting out, followed by phase separation. The remaining solution is fed into a resin adsorption column for phenol adsorption, yielding adsorbed and dephenolized effluent. The resulting regenerated liquid is sent to a distillation tower to recover methanol or ethanol, with crude phenol obtained from the bottom of the distillation tower. The adsorbed and dephenolized effluent is then fed into a catalytic oxidation unit to obtain catalytically oxidized effluent that meets emission standards. This invention employs low-temperature salting out and adsorption dephenolization technology. The adsorption resin is regenerated using low-boiling-point solvents such as methanol and ethanol, significantly reducing investment costs and energy consumption. Furthermore, it can recover high-purity ammonia water and crude phenol, while achieving a COD of less than 50 mg / L in the discharged effluent.

A method for removing phenol from phenol-containing wastewater by adsorption coupled with biodegradation is disclosed. Porous gel beads (BC@PVA / PA) prepared from polyvinyl alcohol (PVA), phytic acid (PA), and biochar (BC) are added to an SBR bioreactor. BC@PVA / PA, which possesses phenol adsorption capabilities, can enhance the removal of phenol from wastewater through adsorption coupled with microbial degradation. A comparison of the purification effects of different treatments on phenol-containing wastewater—including inactivated sludge adsorption, BC@PVA / PA adsorption, activated sludge degradation, and BC@PVA / PA adsorption coupled with activated sludge degradation—reveals that BC@PVA / PA can rapidly adsorb phenol, alleviating the toxic inhibitory effect of high-concentration phenol on activated sludge. The adsorbed phenol can then be further desorbed and gradually removed by microbial degradation.

This invention discloses an iron-nitrogen co-doped carbon material for the adsorption and catalytic degradation of phenol, its preparation method, and its applications. The preparation method includes the following steps: using grapefruit peel as raw material, the material undergoes oxidation, pre-amidation, metal-organic framework loading, inert atmosphere calcination, and activation to obtain the iron-nitrogen co-doped carbon material. This method is economical and environmentally friendly. The prepared material has a hierarchical pore structure and a nitrogen-rich structure, with a specific surface area of ​​365.35 m² / g. The pore size matches the phenol molecule, resulting in rapid mass transfer. The iron-nitrogen co-doped carbon material can achieve a saturated adsorption capacity of 186.6 mg / g for phenol and can catalytically degrade phenol through its stable Fe-N active sites, realizing integrated "adsorption-degradation" and avoiding secondary treatment. The material has a stable structure, is resistant to acids and alkalis, and maintains a high adsorption capacity even after multiple cycles, making it suitable for the efficient treatment of phenol-containing wastewater.