期刊
JOURNAL OF MEMBRANE SCIENCE
卷 529, 期 -, 页码 215-223出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.memsci.2017.01.039
关键词
Vibration membrane; Algae; Frequency; Membrane fouling; EOM
资金
- National Natural Science Foundation of China [51478324, 51625804]
- Program of Shanghai Subject Chief Scientist [14XD1403700]
During algae harvesting using membrane technology, membrane fouling caused by the deposition of algae cells and extracellular organic matter (EOM) poses a major challenge. In this study, axial vibration membrane (AVM) filtration was conducted at 0, 5 and 10 Hz. As the frequency increased, AVM could effectively reduce the reversible fouling caused by the deposition of algae cells on the membranes. With the increase of frequency from 0 to 10 Hz in the 2-h filtration experiments, the amount of algae deposited on the membranes sharply decreased from 8.64 to 0.03 g/m(2). For the reversible EOM on the membranes, with increasing frequency, the protein and polysaccharide contents exhibited declining trends, and no humic-like material was observed. It was also found that both low-MW (< 1 kDa) and high-MW (> 200 kDa) EOM easily caused reversible membrane fouling. The irreversible EOM adhesion to the membrane consisted of protein, polysaccharide and humic-like material. With the increase of frequency the MW peak of irreversible EOM had a right shift tendency. At 0, 5 and 10 Hz, EOM with MW of 3.5, 4 and 5 kDa, respectively, was more easily adsorbed on the membranes and caused irreversible membrane fouling.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据