关键词: 硅藻土, 啤酒酵母菌, 吸附, 微生物, 水处理

Abstract: The biosorption of beer saccharomycete biomass by white diatomite from Changbai Mountain Area in Jilin Province was investigated experimentally. The results show that such a biosorbent has favorable adsorbing effect on beer saccharomycete biomass, and both the adsorbent and adsorbate come in equilibrium within 20 minutes. When the pH value is 7.5 the diatomite shows the best biosorbing effect, and when the amount of diatomite used is 20 g/L with the concentration of beer saccharomycete biomass up to 40 g/L the biosorbing rate is 64% at which the loading amount of the diatomite is 160 mg/g. The biosorption is affected not much by temperature, and it is available to perform biosorption at room temperature. According to the test results, the particles of Jilin-Changbai diatomite is fine with large specific surface area and a bit of impurities. The dominant kinds of algae of the diatomite are small ring and straight chain algae, which provide clear and intercommunicating surface porosity with even pore arrangement. So, the diatomite is naturally a good adsorbent.