Beijing Key Lab of Bioprocess, National Energy R&D Center for Biorefinery, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, PR China.
Beijing Key Lab of Bioprocess, National Energy R&D Center for Biorefinery, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, PR China.
Bioresour Technol. 2016 Oct;218:737-42. doi: 10.1016/j.biortech.2016.07.016. Epub 2016 Jul 14.
In this study, the flocculation process of Chlorella vulgaris and Rhodotorula glutinis induced by inorganic salts modified montmorillonoid was conducted. The maximum flocculation efficiency (FE) of 98.50% for C. vulgaris and 11.83% for R. glutinis were obtained with 4g/L and 5g/L flocculant within the dosage scope of 1-5g/L. The difference of FE was then thermodynamically explained by the extended DLVO theory and the FE of R. glutinis was mechanically enhanced to 90.66% with 0.06g/L cationic polyacrylamide (CPAM) at an optimum pH of 9. After that, aimed to utilize the remainder flocculant capacity, C. vulgaris culture was added to the aggregation of R. glutinis. Fortunately, the coagulation of R. glutinis and C. Vulgaris was achieved with 0.05g/L CPAM and 5g/L flocculant at pH 9 and the FE reached 90.15% and 91.24%, respectively.
在这项研究中，研究了无机盐改性蒙脱石诱导小球藻和粘性红酵母的絮凝过程。在 1-5g/L 的剂量范围内，絮凝剂用量为 4g/L 和 5g/L 时，小球藻和粘性红酵母的最大絮凝效率（FE）分别达到 98.50%和 11.83%。然后，通过扩展的 DLVO 理论从热力学上解释了 FE 的差异，并且在最佳 pH 值为 9 时，用 0.06g/L 的阳离子聚丙烯酰胺（CPAM）将粘性红酵母的 FE 机械增强至 90.66%。之后，为了利用剩余的絮凝剂容量，将小球藻培养液添加到粘性红酵母的聚集物中。幸运的是，在 pH 值为 9 时，用 0.05g/L 的 CPAM 和 5g/L 的絮凝剂实现了粘性红酵母和小球藻的凝结，FE 分别达到 90.15%和 91.24%。
