WU Yi-cheng,ZENG Jin-han,CHEN Qing-rui.Removal of Total Phosphorus by Nanometer Al2O3 and Sodium Alginate Jointly Immobilized Chlorella vulgaris[J].China Water & Wastewater,2020,36(21 21):71-74.
Removal of Total Phosphorus by Nanometer Al2O3 and Sodium Alginate Jointly Immobilized Chlorella vulgaris
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第36卷
Number:
21 21
Page:
71-74
Column:
Date of publication:
2020-11-01
- Abstract:
- The microalgae immobilized bead prepared by traditional immobilized materials has the problem of poor mass transfer performance and low removal efficiency of total phosphorus in water. Nanometer Al2O3 and sodium alginate jointly immobilized Chlorella vulgaris was prepared, and the effects of initial total phosphorus concentration, bead size and number on removal of total phosphorus in water were explored. The nanometer Al2O3 increased the specific surface area of the immobilized Chlorella vulgaris bead and promoted its removal efficiency of total phosphorus, and the removal efficiency of total phosphorus increased with the increase of the dosage of jointly immobilized Chlorella vulgaris and the decrease of particle size. The optimum conditions for beads preparation were as follows: 0.15 g nanometer Al2O3 was added to 30 mL sodium alginate solution with a concentration of 1.8%, then Chlorella vulgaris was added with algae cell density of 2×106 cell/mL, and cross-linking agent (CaCl2) concentration was 1%. The removal efficiency of total phosphorus could still reach 77.51% after the jointly immobilized Chlorella vulgaris beads being reused for three times．
Last Update:
2020-11-01