Abstract:In this experiment, organic layered double hydroxides is synthesized using coprecipitation method． Then an ultrasonic treatment is conducted on the synthesized LDH-SDBS to enable it to have a large specific surface area and a better adsorption capacity． Then the synthesized LDH-SDBS is used to remove the humic acid from aqueous solutions with a certain gradient． After adsorption, the concentration of humic acid is measured with a spectrophotometer to determine the adsorption capacity． The adsorption capacity of LDH-SDBS towards HA is found to be relatively high． And the adsorption of humic acid by LDH-SDBS could be affected by many factors, such as adsorbent dosage, competing anions, temperature time, and pH of the solution．