[Adsorptive properties of various carriers on dibutyl phthalate degradation bacteria]

Seeking cheap and effective carriers for adsorbing dibutyl phthalate (DBP) degradation dominant bacteria.

Diatomite, clinoptilolite, silk zeolite and coal fly ash were selected as reserve materials and modified. The adsorptive capacity and intensity of each carrier to DBP degradation bacteria were measured.

The adsorptive capacity of coal fly ash, clinoptilolite, silk zeolite and diatomite to DBP degradation dominant bacteria was 1.66, 1.37, 1.49 and 1.16 times in turn to that of natural carriers. The comparative tests for each modified carrier indicated that the adsorptive capacity of diatomite, clinoptilolite, silk zeolite and coal fly ash was 94.4%, 84.0%, 71.6% and 44.2% in turn. The adsorptive intensity of above carriers was 91.1%, 90.1%, 90.5% and 72.1%. The degradation rate to 100 mg/L DBP in 24h was 90.2%, 89.9%, 76.3% and 62.4% successively.

The adsorptive capacity of diatomite, clinoptilolite, silk zeolite, and coal fly ash to DBP degradation dominant bacteria was enhanced after being modified. The adsorptive capacity and intensity from strong to weak was diatomite, clinoptilolite, silk zeolite, and coal fly ash.