WEI Yong,WU Hong,LUO Zheng-bo,et al.Influence Factors of Forward Osmosis on Tannic Acid Removal[J].China Water & Wastewater,2022,38(2022 1 1):70-76.
Influence Factors of Forward Osmosis on Tannic Acid Removal
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
2022 1 1
Page:
70-76
Column:
Date of publication:
2022-01-01
- Keywords:
- forward osmosis; draw solution; tannic acid; membrane flux; rejection rate
- Abstract:
- The removal of tannic acid by forward osmosis membrane under different membrane orientation, concentration of draw solution and feed solution, membrane surface velocity, temperature of feed solution and pH was investigated by using tannic acid solution and NaCl solution as the feed solution and draw solution. The higher concentration of draw solution, lower concentration of feed solution, higher temperature of feed solution, higher cross flow velocity, and operation mode of the membrane active layer towards the draw solution were all beneficial to improve the membrane flux, and the salt flux was positively correlated with the membrane flux. The rejection rates of tannic acid by the forward osmosis membrane were all above 97% under different influencing factors, while the rejection rate was higher when the membrane active layer was running towards the feed solution.
Last Update:
2022-01-01