The Primary Study On Aromatic Contaminants' Adsorptivity In The Baotou Section Of The Yellow River

The aromatic organism is one of the main reason to affect the water quality of Baotou section of the Yellow River. A primary study on the adsorption and influencing factors of aromatic organic contaminants in different systems was carried out with the sorbent being sediments of Yellow River, upward Baotou clean reach relatively, and the phenol, aniline and chlorobenzene , the three representative aromatic organic contaminant used as adsorbates. The influence of surrounding factors (concentration and type of sediments, temperature, ions intensity, PH, content of organic matter) to adsorption isotherms of three organisms was discussed. The partition coefficients of phenol, aniline and chlorobenzene between water phase and sediments were obtained preliminarily. The data will be accumulated for the study of hydroxybenzenes, anilines and chlorobenzenes transplant and transformation. Here are the primary conclusion:1. The adsorption isotherms of phenol, aniline and chlorobenzene are all nonlinear, on sediments in Baotou section of the Yellow River in single component and multicomponent systems . The adsorptive characters are different in different system and influenced by each surrounding factor.2. The influencing trend of PH and ions intensity to each compound's adsorption in different system are identical approximately. The adsorbance Cs(mmol/L) minish along with the increase of sorbent's concentration, whereas the net adsorbance Q(mmol) will increase. The suspended matter's adsorbance to the three aromatic organism is bigger than the sediments' in same condition.3. The adsorbance of each compound on sediments of multicomponent system are all less than single component's, so the adsorption competition exists among multicomponent system.4. In the same system, the partition coefficients of phenol and aniline are influenced largely by PH, and that chlorobenzene's is steady relatively. In different systems, the partition coefficients of phenol, aniline and chlorobenzene between water phase and sediments are widely.